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Drake R8-B
I have a question about this radio.
If I plug the AC jack in the wall and I have the 12 volt connection hooked up to a battery as a power failure backup will it damage the radio? Is there an internal switch to protect it from both sources being connected at the same time? Thanks Pierre |
Peter wrote:
I have a question about this radio. If I plug the AC jack in the wall and I have the 12 volt connection hooked up to a battery as a power failure backup will it damage the radio? Is there an internal switch to protect it from both sources being connected at the same time? I don't know. But I run mine on 12v all the time. The R8B runs extremely cool if you do that; you can even stack things on it then. -- Ron Hardin On the internet, nobody knows you're a jerk. |
In article
e.rogers.com, "Peter" wrote: I have a question about this radio. If I plug the AC jack in the wall and I have the 12 volt connection hooked up to a battery as a power failure backup will it damage the radio? Is there an internal switch to protect it from both sources being connected at the same time? I looked at the manual and could not find a definitive answer to your question. I would not try this until you get an answer from Drake support. Phone: 937-746-6990 -- Telamon Ventura, California |
Thanks, I think I will call them to make sure
' "Telamon" wrote in message ... In article e.rogers.com, "Peter" wrote: I have a question about this radio. If I plug the AC jack in the wall and I have the 12 volt connection hooked up to a battery as a power failure backup will it damage the radio? Is there an internal switch to protect it from both sources being connected at the same time? I looked at the manual and could not find a definitive answer to your question. I would not try this until you get an answer from Drake support. Phone: 937-746-6990 -- Telamon Ventura, California |
The 13 Volt input connects (through a diode) to the DC rail in the
Power Supply, upstream from all the regulators, downstream from the full wave bridge. It is always connected. The regulators would draw power from both the AC/transformer/bridge and from the battery/diode if both were hooked up. On Wed, 26 Nov 2003 21:06:54 GMT, "Peter" wrote: I have a question about this radio. If I plug the AC jack in the wall and I have the 12 volt connection hooked up to a battery as a power failure backup will it damage the radio? Is there an internal switch to protect it from both sources being connected at the same time? Thanks Pierre |
Interesting question! When you find out, let us all know.
-- "You cannot invade the mainland United States. There would be a rifle behind each blade of grass." --Japanese Admiral Isoroku Yamamoto "Peter" wrote in message ble.rogers.com... Thanks, I think I will call them to make sure ' "Telamon" wrote in message ... In article e.rogers.com, "Peter" wrote: I have a question about this radio. If I plug the AC jack in the wall and I have the 12 volt connection hooked up to a battery as a power failure backup will it damage the radio? Is there an internal switch to protect it from both sources being connected at the same time? I looked at the manual and could not find a definitive answer to your question. I would not try this until you get an answer from Drake support. Phone: 937-746-6990 -- Telamon Ventura, California |
I got a response from Drake this morning. Here it is:
"There is a diode switch to protect each area so there should be no problem. Shane " I tried it and it seems to work fine. Pierre "David" wrote in message ... The 13 Volt input connects (through a diode) to the DC rail in the Power Supply, upstream from all the regulators, downstream from the full wave bridge. It is always connected. The regulators would draw power from both the AC/transformer/bridge and from the battery/diode if both were hooked up. On Wed, 26 Nov 2003 21:06:54 GMT, "Peter" wrote: I have a question about this radio. If I plug the AC jack in the wall and I have the 12 volt connection hooked up to a battery as a power failure backup will it damage the radio? Is there an internal switch to protect it from both sources being connected at the same time? Thanks Pierre |
Peter wrote in message . cable.rogers.com... I have a question about this radio. If I plug the AC jack in the wall and I have the 12 volt connection hooked up to a battery as a power failure backup will it damage the radio? Is there an internal switch to protect it from both sources being connected at the same time? Thanks Pierre Shouldn't be any problem... Drake told me years back to put a big battery on those terminals to act as back-up power supply for my R8B. Down here in the lightning capital of the US we routinely pull the plugs, antennas and grounds from our gear to keep it from getting damaged by lightning discharges. The @#!&*# Drake R8B does not have any internal power back-up so to keep from having to reset the clock every time the plug is pulled an external power supply is needed. The current draw on battery during standby is about 0.64 amp so size a battery accordingly. Why Drake couldn't have put an internal back-up battery for the clock escapes me---then again, the R8B is a half-baked receiver anyway! RG |
RadioGuy wrote: Peter wrote in message . cable.rogers.com... I have a question about this radio. If I plug the AC jack in the wall and I have the 12 volt connection hooked up to a battery as a power failure backup will it damage the radio? Is there an internal switch to protect it from both sources being connected at the same time? Thanks Pierre Shouldn't be any problem... Drake told me years back to put a big battery on those terminals to act as back-up power supply for my R8B. Down here in the lightning capital of the US we routinely pull the plugs, antennas and grounds from our gear to keep it from getting damaged by lightning discharges. The @#!&*# Drake R8B does not have any internal power back-up so to keep from having to reset the clock every time the plug is pulled an external power supply is needed. The current draw on battery during standby is about 0.64 amp so size a battery accordingly. Why Drake couldn't have put an internal back-up battery for the clock escapes me---then again, the R8B is a half-baked receiver anyway! RG Half-baked? Steve Holland, MI Drake R7, R8 and R8B Drake... When you care enough to listen with the best! |
N8KDV wrote:
RadioGuy wrote: Peter wrote in message . cable.rogers.com... I have a question about this radio. If I plug the AC jack in the wall and I have the 12 volt connection hooked up to a battery as a power failure backup will it damage the radio? Is there an internal switch to protect it from both sources being connected at the same time? Thanks Pierre Shouldn't be any problem... Drake told me years back to put a big battery on those terminals to act as back-up power supply for my R8B. Down here in the lightning capital of the US we routinely pull the plugs, antennas and grounds from our gear to keep it from getting damaged by lightning discharges. The @#!&*# Drake R8B does not have any internal power back-up so to keep from having to reset the clock every time the plug is pulled an external power supply is needed. The current draw on battery during standby is about 0.64 amp so size a battery accordingly. Why Drake couldn't have put an internal back-up battery for the clock escapes me---then again, the R8B is a half-baked receiver anyway! RG Half-baked? Steve goes for the bait. -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 100,000 Newsgroups - 19 Different Servers! =----- |
N8KDV wrote in message ... RadioGuy wrote: Peter wrote in message . cable.rogers.com... I have a question about this radio. If I plug the AC jack in the wall and I have the 12 volt connection hooked up to a battery as a power failure backup will it damage the radio? Is there an internal switch to protect it from both sources being connected at the same time? Thanks Pierre Shouldn't be any problem... Drake told me years back to put a big battery on those terminals to act as back-up power supply for my R8B. Down here in the lightning capital of the US we routinely pull the plugs, antennas and grounds from our gear to keep it from getting damaged by lightning discharges. The @#!&*# Drake R8B does not have any internal power back-up so to keep from having to reset the clock every time the plug is pulled an external power supply is needed. The current draw on battery during standby is about 0.64 amp so size a battery accordingly. Why Drake couldn't have put an internal back-up battery for the clock escapes me---then again, the R8B is a half-baked receiver anyway! RG Half-baked? Steve Holland, MI Drake R7, R8 and R8B Drake... When you care enough to listen with the best! Hi Steve, I've been away for awhile... happy to see you are still here; lots of folks have left it seems. Yea... halfbaked... you know me... remember that long thread years back where we picked at the R8B? I still haven't changed my mind about it! My R8B gets a serious workout; it's on everyday and sometimes all day too. Over the years since I had it little glitches keep coming up. I've reached the point where it might be a cheaper to trade it in on a new one instead of sending it back to Drake for repair---labor was $70.00/hour a couple of years ago, maybe more now. Besides, every time it comes back there is a new ding here and there. Problems I notice now is drifting of the notch, passband control has slowly moved off center, some crystal must have drifted off frequency as I get a beat when it should be zero beat in LSB and USB mode during exalted carrier reception and a quirk that comes and goes---It take a couple of three seconds to get audio after the receiver is turned on and sometimes I have to crank the audio gain way up to get it to go. I just don't feel exicited about trouble shooting it myself. BTW, I guess it's been a year since I did a clean job on the encoder/switch. Everything is running fine. I am really beginning to think its the grease that the encoder/switch is packed with that is the problem with the premature failing of the control that folks are experiencing---you might have read my analysis a year ago. I cleaned mine with DeoxIT and lightly lubed it with CaiLube---that's after I cleaned all the grease out of it. Best Regards, RG |
HFguy wrote: N8KDV wrote: RadioGuy wrote: Peter wrote in message . cable.rogers.com... I have a question about this radio. If I plug the AC jack in the wall and I have the 12 volt connection hooked up to a battery as a power failure backup will it damage the radio? Is there an internal switch to protect it from both sources being connected at the same time? Thanks Pierre Shouldn't be any problem... Drake told me years back to put a big battery on those terminals to act as back-up power supply for my R8B. Down here in the lightning capital of the US we routinely pull the plugs, antennas and grounds from our gear to keep it from getting damaged by lightning discharges. The @#!&*# Drake R8B does not have any internal power back-up so to keep from having to reset the clock every time the plug is pulled an external power supply is needed. The current draw on battery during standby is about 0.64 amp so size a battery accordingly. Why Drake couldn't have put an internal back-up battery for the clock escapes me---then again, the R8B is a half-baked receiver anyway! RG Half-baked? Steve goes for the bait. Hee Hee, perhaps it was YOU who went for my bait? Something to consider! Steve Holland, MI Drake R7, R8 and R8B http://www.iserv.net/~n8kdv/dxpage.htm |
RadioGuy wrote: N8KDV wrote in message ... RadioGuy wrote: Peter wrote in message . cable.rogers.com... I have a question about this radio. If I plug the AC jack in the wall and I have the 12 volt connection hooked up to a battery as a power failure backup will it damage the radio? Is there an internal switch to protect it from both sources being connected at the same time? Thanks Pierre Shouldn't be any problem... Drake told me years back to put a big battery on those terminals to act as back-up power supply for my R8B. Down here in the lightning capital of the US we routinely pull the plugs, antennas and grounds from our gear to keep it from getting damaged by lightning discharges. The @#!&*# Drake R8B does not have any internal power back-up so to keep from having to reset the clock every time the plug is pulled an external power supply is needed. The current draw on battery during standby is about 0.64 amp so size a battery accordingly. Why Drake couldn't have put an internal back-up battery for the clock escapes me---then again, the R8B is a half-baked receiver anyway! RG Half-baked? Steve Holland, MI Drake R7, R8 and R8B Drake... When you care enough to listen with the best! Hi Steve, I've been away for awhile... happy to see you are still here; lots of folks have left it seems. Yea... halfbaked... you know me... remember that long thread years back where we picked at the R8B? I still haven't changed my mind about it! My R8B gets a serious workout; it's on everyday and sometimes all day too. Over the years since I had it little glitches keep coming up. I've reached the point where it might be a cheaper to trade it in on a new one instead of sending it back to Drake for repair---labor was $70.00/hour a couple of years ago, maybe more now. Besides, every time it comes back there is a new ding here and there. Problems I notice now is drifting of the notch, passband control has slowly moved off center, some crystal must have drifted off frequency as I get a beat when it should be zero beat in LSB and USB mode during exalted carrier reception and a quirk that comes and goes---It take a couple of three seconds to get audio after the receiver is turned on and sometimes I have to crank the audio gain way up to get it to go. I just don't feel exicited about trouble shooting it myself. BTW, I guess it's been a year since I did a clean job on the encoder/switch. Everything is running fine. I am really beginning to think its the grease that the encoder/switch is packed with that is the problem with the premature failing of the control that folks are experiencing---you might have read my analysis a year ago. I cleaned mine with DeoxIT and lightly lubed it with CaiLube---that's after I cleaned all the grease out of it. Best Regards, RG I have yet to experience the problems you've had so far, except for the rotary encoder problem. I had cleaned mine out and it worked ok for quite some time, but the problem is back. It only ever manifested itself when tuning down in frequency. It doesn't bother me too much as I enter a lot of stuff via the keypad, and if I tune slowly down in frequency it will not jump. One thing I did not do the last time was use the CaiLube, I suppose I should order some up, and re-do the process. Steve Holland, MI Drake R7, R8 and R8B http://www.iserv.net/~n8kdv/dxpage.htm |
N8KDV wrote: RadioGuy wrote: N8KDV wrote in message ... RadioGuy wrote: Peter wrote in message . cable.rogers.com... I have a question about this radio. If I plug the AC jack in the wall and I have the 12 volt connection hooked up to a battery as a power failure backup will it damage the radio? Is there an internal switch to protect it from both sources being connected at the same time? Thanks Pierre Shouldn't be any problem... Drake told me years back to put a big battery on those terminals to act as back-up power supply for my R8B. Down here in the lightning capital of the US we routinely pull the plugs, antennas and grounds from our gear to keep it from getting damaged by lightning discharges. The @#!&*# Drake R8B does not have any internal power back-up so to keep from having to reset the clock every time the plug is pulled an external power supply is needed. The current draw on battery during standby is about 0.64 amp so size a battery accordingly. Why Drake couldn't have put an internal back-up battery for the clock escapes me---then again, the R8B is a half-baked receiver anyway! RG Half-baked? Steve Holland, MI Drake R7, R8 and R8B Drake... When you care enough to listen with the best! Hi Steve, I've been away for awhile... happy to see you are still here; lots of folks have left it seems. Yea... halfbaked... you know me... remember that long thread years back where we picked at the R8B? I still haven't changed my mind about it! My R8B gets a serious workout; it's on everyday and sometimes all day too. Over the years since I had it little glitches keep coming up. I've reached the point where it might be a cheaper to trade it in on a new one instead of sending it back to Drake for repair---labor was $70.00/hour a couple of years ago, maybe more now. Besides, every time it comes back there is a new ding here and there. Problems I notice now is drifting of the notch, passband control has slowly moved off center, some crystal must have drifted off frequency as I get a beat when it should be zero beat in LSB and USB mode during exalted carrier reception and a quirk that comes and goes---It take a couple of three seconds to get audio after the receiver is turned on and sometimes I have to crank the audio gain way up to get it to go. I just don't feel exicited about trouble shooting it myself. BTW, I guess it's been a year since I did a clean job on the encoder/switch. Everything is running fine. I am really beginning to think its the grease that the encoder/switch is packed with that is the problem with the premature failing of the control that folks are experiencing---you might have read my analysis a year ago. I cleaned mine with DeoxIT and lightly lubed it with CaiLube---that's after I cleaned all the grease out of it. Best Regards, RG I have yet to experience the problems you've had so far, except for the rotary encoder problem. I had cleaned mine out and it worked ok for quite some time, but the problem is back. It only ever manifested itself when tuning down in frequency. It doesn't bother me too much as I enter a lot of stuff via the keypad, and if I tune slowly down in frequency it will not jump. One thing I did not do the last time was use the CaiLube, I suppose I should order some up, and re-do the process. A question: Which particular type of CaiLube did you use? The 5% solution or the 100%? Steve Holland, MI Drake R7, R8 and R8B http://www.iserv.net/~n8kdv/dxpage.htm |
RG Half-baked? Steve Holland, MI Drake R7, R8 and R8B Drake... When you care enough to listen with the best! Hi Steve, I've been away for awhile... happy to see you are still here; lots of folks have left it seems. Yea... halfbaked... you know me... remember that long thread years back where we picked at the R8B? I still haven't changed my mind about it! My R8B gets a serious workout; it's on everyday and sometimes all day too. Over the years since I had it little glitches keep coming up. I've reached the point where it might be a cheaper to trade it in on a new one instead of sending it back to Drake for repair---labor was $70.00/hour a couple of years ago, maybe more now. Besides, every time it comes back there is a new ding here and there. Problems I notice now is drifting of the notch, passband control has slowly moved off center, some crystal must have drifted off frequency as I get a beat when it should be zero beat in LSB and USB mode during exalted carrier reception and a quirk that comes and goes---It take a couple of three seconds to get audio after the receiver is turned on and sometimes I have to crank the audio gain way up to get it to go. I just don't feel exicited about trouble shooting it myself. BTW, I guess it's been a year since I did a clean job on the encoder/switch. Everything is running fine. I am really beginning to think its the grease that the encoder/switch is packed with that is the problem with the premature failing of the control that folks are experiencing---you might have read my analysis a year ago. I cleaned mine with DeoxIT and lightly lubed it with CaiLube---that's after I cleaned all the grease out of it. Best Regards, RG I have yet to experience the problems you've had so far, except for the rotary encoder problem. I had cleaned mine out and it worked ok for quite some time, but the problem is back. It only ever manifested itself when tuning down in frequency. It doesn't bother me too much as I enter a lot of stuff via the keypad, and if I tune slowly down in frequency it will not jump. One thing I did not do the last time was use the CaiLube, I suppose I should order some up, and re-do the process. A question: Which particular type of CaiLube did you use? The 5% solution or the 100%? Steve Holland, MI Drake R7, R8 and R8B http://www.iserv.net/~n8kdv/dxpage.htm I've yet to experience any problem with either one of my Drakes. I own, the R8 or the R8B. Maybe I've just been lucky.. 73's Rick |
N8KDV wrote in message ... N8KDV wrote: RadioGuy wrote: N8KDV wrote in message ... RadioGuy wrote: Peter wrote in message . cable.rogers.com... I have a question about this radio. If I plug the AC jack in the wall and I have the 12 volt connection hooked up to a battery as a power failure backup will it damage the radio? Is there an internal switch to protect it from both sources being connected at the same time? Thanks Pierre Shouldn't be any problem... Drake told me years back to put a big battery on those terminals to act as back-up power supply for my R8B. Down here in the lightning capital of the US we routinely pull the plugs, antennas and grounds from our gear to keep it from getting damaged by lightning discharges. The @#!&*# Drake R8B does not have any internal power back-up so to keep from having to reset the clock every time the plug is pulled an external power supply is needed. The current draw on battery during standby is about 0.64 amp so size a battery accordingly. Why Drake couldn't have put an internal back-up battery for the clock escapes me---then again, the R8B is a half-baked receiver anyway! RG Half-baked? Steve Holland, MI Drake R7, R8 and R8B Drake... When you care enough to listen with the best! Hi Steve, I've been away for awhile... happy to see you are still here; lots of folks have left it seems. Yea... halfbaked... you know me... remember that long thread years back where we picked at the R8B? I still haven't changed my mind about it! My R8B gets a serious workout; it's on everyday and sometimes all day too. Over the years since I had it little glitches keep coming up. I've reached the point where it might be a cheaper to trade it in on a new one instead of sending it back to Drake for repair---labor was $70.00/hour a couple of years ago, maybe more now. Besides, every time it comes back there is a new ding here and there. Problems I notice now is drifting of the notch, passband control has slowly moved off center, some crystal must have drifted off frequency as I get a beat when it should be zero beat in LSB and USB mode during exalted carrier reception and a quirk that comes and goes---It take a couple of three seconds to get audio after the receiver is turned on and sometimes I have to crank the audio gain way up to get it to go. I just don't feel exicited about trouble shooting it myself. BTW, I guess it's been a year since I did a clean job on the encoder/switch. Everything is running fine. I am really beginning to think its the grease that the encoder/switch is packed with that is the problem with the premature failing of the control that folks are experiencing---you might have read my analysis a year ago. I cleaned mine with DeoxIT and lightly lubed it with CaiLube---that's after I cleaned all the grease out of it. Best Regards, RG I have yet to experience the problems you've had so far, except for the rotary encoder problem. I had cleaned mine out and it worked ok for quite some time, but the problem is back. It only ever manifested itself when tuning down in frequency. It doesn't bother me too much as I enter a lot of stuff via the keypad, and if I tune slowly down in frequency it will not jump. One thing I did not do the last time was use the CaiLube, I suppose I should order some up, and re-do the process. A question: Which particular type of CaiLube did you use? The 5% solution or the 100%? That's what I found so interesting about the two encoders that failed me; for the most part I only use the keypad, the knob was just for fine tuning. The CaiLube that I used is 100%. The part number is 100L-L25C, it's the 25 ml bottle with the needle applicator---I used the smallest drop. BTW, after cleaning out all that grease stuff in the encoder I really like the way it tunes now---it's a nice crisp feel instead of that thick greasy feel. I added a couple of felt washers between the knob and panel so I can also regulate tuning knob tension ( I also put on the older R8 tuning knob too). RG |
RadioGuy wrote: N8KDV wrote in message ... N8KDV wrote: RadioGuy wrote: N8KDV wrote in message ... RadioGuy wrote: Peter wrote in message . cable.rogers.com... I have a question about this radio. If I plug the AC jack in the wall and I have the 12 volt connection hooked up to a battery as a power failure backup will it damage the radio? Is there an internal switch to protect it from both sources being connected at the same time? Thanks Pierre Shouldn't be any problem... Drake told me years back to put a big battery on those terminals to act as back-up power supply for my R8B. Down here in the lightning capital of the US we routinely pull the plugs, antennas and grounds from our gear to keep it from getting damaged by lightning discharges. The @#!&*# Drake R8B does not have any internal power back-up so to keep from having to reset the clock every time the plug is pulled an external power supply is needed. The current draw on battery during standby is about 0.64 amp so size a battery accordingly. Why Drake couldn't have put an internal back-up battery for the clock escapes me---then again, the R8B is a half-baked receiver anyway! RG Half-baked? Steve Holland, MI Drake R7, R8 and R8B Drake... When you care enough to listen with the best! Hi Steve, I've been away for awhile... happy to see you are still here; lots of folks have left it seems. Yea... halfbaked... you know me... remember that long thread years back where we picked at the R8B? I still haven't changed my mind about it! My R8B gets a serious workout; it's on everyday and sometimes all day too. Over the years since I had it little glitches keep coming up. I've reached the point where it might be a cheaper to trade it in on a new one instead of sending it back to Drake for repair---labor was $70.00/hour a couple of years ago, maybe more now. Besides, every time it comes back there is a new ding here and there. Problems I notice now is drifting of the notch, passband control has slowly moved off center, some crystal must have drifted off frequency as I get a beat when it should be zero beat in LSB and USB mode during exalted carrier reception and a quirk that comes and goes---It take a couple of three seconds to get audio after the receiver is turned on and sometimes I have to crank the audio gain way up to get it to go. I just don't feel exicited about trouble shooting it myself. BTW, I guess it's been a year since I did a clean job on the encoder/switch. Everything is running fine. I am really beginning to think its the grease that the encoder/switch is packed with that is the problem with the premature failing of the control that folks are experiencing---you might have read my analysis a year ago. I cleaned mine with DeoxIT and lightly lubed it with CaiLube---that's after I cleaned all the grease out of it. Best Regards, RG I have yet to experience the problems you've had so far, except for the rotary encoder problem. I had cleaned mine out and it worked ok for quite some time, but the problem is back. It only ever manifested itself when tuning down in frequency. It doesn't bother me too much as I enter a lot of stuff via the keypad, and if I tune slowly down in frequency it will not jump. One thing I did not do the last time was use the CaiLube, I suppose I should order some up, and re-do the process. A question: Which particular type of CaiLube did you use? The 5% solution or the 100%? That's what I found so interesting about the two encoders that failed me; for the most part I only use the keypad, the knob was just for fine tuning. The CaiLube that I used is 100%. The part number is 100L-L25C, it's the 25 ml bottle with the needle applicator---I used the smallest drop. BTW, after cleaning out all that grease stuff in the encoder I really like the way it tunes now---it's a nice crisp feel instead of that thick greasy feel. I added a couple of felt washers between the knob and panel so I can also regulate tuning knob tension ( I also put on the older R8 tuning knob too). RG Thanks, I'll order some up. Steve Holland, MI |
The only thing worse than a bottom poster is one that rights one line at the
bottom of over half a page of already read crap. "N8KDV" wrote in message ... A question: Which particular type of CaiLube did you use? The 5% solution or the 100%? Steve Holland, MI Drake R7, R8 and R8B http://www.iserv.net/~n8kdv/dxpage.htm |
CW wrote: The only thing worse than a bottom poster is one that rights one line at the bottom of over half a page of already read crap. Oh come on. The worst thing is a top poster who can't spell! It's 'writes' not 'rights'. LMAO "N8KDV" wrote in message ... A question: Which particular type of CaiLube did you use? The 5% solution or the 100%? Steve Holland, MI Drake R7, R8 and R8B http://www.iserv.net/~n8kdv/dxpage.htm |
RadioGuy wrote:
Hi Steve, I've been away for awhile... happy to see you are still here; lots of folks have left it seems. Yea... halfbaked... you know me... remember that long thread years back where we picked at the R8B? I still haven't changed my mind about it! My R8B gets a serious workout; it's on everyday and sometimes all day too. Over the years since I had it little glitches keep coming up. I've reached the point where it might be a cheaper to trade it in on a new one instead of sending it back to Drake for repair---labor was $70.00/hour a couple of years ago, maybe more now. Besides, every time it comes back there is a new ding here and there. Problems I notice now is drifting of the notch, passband control has slowly moved off center, some crystal must have drifted off frequency as I get a beat when it should be zero beat in LSB and USB mode during exalted carrier reception and a quirk that comes and goes---It take a couple of three seconds to get audio after the receiver is turned on and sometimes I have to crank the audio gain way up to get it to go. I just don't feel exicited about trouble shooting it myself. BTW, I guess it's been a year since I did a clean job on the encoder/switch. Everything is running fine. I am really beginning to think its the grease that the encoder/switch is packed with that is the problem with the premature failing of the control that folks are experiencing---you might have read my analysis a year ago. I cleaned mine with DeoxIT and lightly lubed it with CaiLube---that's after I cleaned all the grease out of it. Best Regards, RG My R8B has been quite reliable except for the notorious encoder wheel too. I agree that the factory lube seems to be the problem. After thoroughly cleaning it and relubing with 'Super-Lube' (a synthetic grease) I've had no further problems with the encoder for over a year now. Do you power your R8B with AC or DC? I use a 12-V regulated supply. The radio is usually on all day and most of the evening. It runs quite cool on DC. How old is yours? Mine was made in late 2000. -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 100,000 Newsgroups - 19 Different Servers! =----- |
In article
. rogers.com, "Peter" wrote: "David" wrote in message ... The 13 Volt input connects (through a diode) to the DC rail in the Power Supply, upstream from all the regulators, downstream from the full wave bridge. It is always connected. The regulators would draw power from both the AC/transformer/bridge and from the battery/diode if both were hooked up. On Wed, 26 Nov 2003 21:06:54 GMT, "Peter" wrote: I have a question about this radio. If I plug the AC jack in the wall and I have the 12 volt connection hooked up to a battery as a power failure backup will it damage the radio? Is there an internal switch to protect it from both sources being connected at the same time? I got a response from Drake this morning. Here it is: "There is a diode switch to protect each area so there should be no problem. Shane " I tried it and it seems to work fine. The diode would make it safe to connect the battery to the DC terminals with the internal AC supply operating. What will determine if current from the battery is drawn while the AC supply is operating are the voltages of each at the diode-summing junction since there is no current share connection between them. If the battery voltage is even slightly below the AC supply voltage no current should flow from the battery and at the same time the internal AC supply can't recharge the external battery either so to keep it charged you will need an additional external AC supply. As soon as the internal AC supply voltage falls below the battery voltage then current will be drawn from the battery. -- Telamon Ventura, California |
starman wrote in message ... RadioGuy wrote: Hi Steve, I've been away for awhile... happy to see you are still here; lots of folks have left it seems. Yea... halfbaked... you know me... remember that long thread years back where we picked at the R8B? I still haven't changed my mind about it! My R8B gets a serious workout; it's on everyday and sometimes all day too. Over the years since I had it little glitches keep coming up. I've reached the point where it might be a cheaper to trade it in on a new one instead of sending it back to Drake for repair---labor was $70.00/hour a couple of years ago, maybe more now. Besides, every time it comes back there is a new ding here and there. Problems I notice now is drifting of the notch, passband control has slowly moved off center, some crystal must have drifted off frequency as I get a beat when it should be zero beat in LSB and USB mode during exalted carrier reception and a quirk that comes and goes---It take a couple of three seconds to get audio after the receiver is turned on and sometimes I have to crank the audio gain way up to get it to go. I just don't feel exicited about trouble shooting it myself. BTW, I guess it's been a year since I did a clean job on the encoder/switch. Everything is running fine. I am really beginning to think its the grease that the encoder/switch is packed with that is the problem with the premature failing of the control that folks are experiencing---you might have read my analysis a year ago. I cleaned mine with DeoxIT and lightly lubed it with CaiLube---that's after I cleaned all the grease out of it. Best Regards, RG My R8B has been quite reliable except for the notorious encoder wheel too. I agree that the factory lube seems to be the problem. After thoroughly cleaning it and relubing with 'Super-Lube' (a synthetic grease) I've had no further problems with the encoder for over a year now. Do you power your R8B with AC or DC? I use a 12-V regulated supply. The radio is usually on all day and most of the evening. It runs quite cool on DC. How old is yours? Mine was made in late 2000. Howdy Starman, I remember swapping email with you; I've been away for awhile. My R8B was bought back in January,1998. If I remember how to read the serial number mine was made in 1997. I run the receiver off the mains but use battery when we loose power (which is often in summer during the monsoon). RG |
How do you find the year it was made in the serial #?
I hooked mine up to a wheelchair 12v battery. They are filled with gel and can be charged indoors without fumes. Pierre "RadioGuy" wrote in message ... starman wrote in message ... RadioGuy wrote: Hi Steve, I've been away for awhile... happy to see you are still here; lots of folks have left it seems. Yea... halfbaked... you know me... remember that long thread years back where we picked at the R8B? I still haven't changed my mind about it! My R8B gets a serious workout; it's on everyday and sometimes all day too. Over the years since I had it little glitches keep coming up. I've reached the point where it might be a cheaper to trade it in on a new one instead of sending it back to Drake for repair---labor was $70.00/hour a couple of years ago, maybe more now. Besides, every time it comes back there is a new ding here and there. Problems I notice now is drifting of the notch, passband control has slowly moved off center, some crystal must have drifted off frequency as I get a beat when it should be zero beat in LSB and USB mode during exalted carrier reception and a quirk that comes and goes---It take a couple of three seconds to get audio after the receiver is turned on and sometimes I have to crank the audio gain way up to get it to go. I just don't feel exicited about trouble shooting it myself. BTW, I guess it's been a year since I did a clean job on the encoder/switch. Everything is running fine. I am really beginning to think its the grease that the encoder/switch is packed with that is the problem with the premature failing of the control that folks are experiencing---you might have read my analysis a year ago. I cleaned mine with DeoxIT and lightly lubed it with CaiLube---that's after I cleaned all the grease out of it. Best Regards, RG My R8B has been quite reliable except for the notorious encoder wheel too. I agree that the factory lube seems to be the problem. After thoroughly cleaning it and relubing with 'Super-Lube' (a synthetic grease) I've had no further problems with the encoder for over a year now. Do you power your R8B with AC or DC? I use a 12-V regulated supply. The radio is usually on all day and most of the evening. It runs quite cool on DC. How old is yours? Mine was made in late 2000. Howdy Starman, I remember swapping email with you; I've been away for awhile. My R8B was bought back in January,1998. If I remember how to read the serial number mine was made in 1997. I run the receiver off the mains but use battery when we loose power (which is often in summer during the monsoon). RG |
Peter wrote in message le.rogers.com... How do you find the year it was made in the serial #? Howdy Teleamon... Please someone correct me if I'm wrong... It's the first digit in the serial number. For instance, 7Lxxxxxxxx is 1997 manufacture date. RG |
Mine is *2J1294etc...
It was made in 2002. Does the J mean it was made in the 10th month, October? Pierre "RadioGuy" wrote in message ... Peter wrote in message le.rogers.com... How do you find the year it was made in the serial #? Howdy Teleamon... Please someone correct me if I'm wrong... It's the first digit in the serial number. For instance, 7Lxxxxxxxx is 1997 manufacture date. RG |
Peter wrote in message le.rogers.com... Mine is *2J1294etc... It was made in 2002. Does the J mean it was made in the 10th month, October? You know I think you are right... J is October and my L is December. The 1294 is the model number and is the same as mine---interesting... no changes to the R8B between December 1997 and October 2002. Gosh... it's been a long time... I just can't be sure about it. RG |
In article
, "RadioGuy" wrote: Peter wrote in message le.rogers.com... How do you find the year it was made in the serial #? Howdy Teleamon... Please someone correct me if I'm wrong... It's the first digit in the serial number. For instance, 7Lxxxxxxxx is 1997 manufacture date. According to thread posted earlier this year between N8KDV and Al Patrick you are right about the year. The "L" denotes the month December the "L" being the "12" letter in the alphabet and if you have an R8B the next four digits are 1294, which is the model number. -- Telamon Ventura, California |
"RadioGuy" wrote in message ... Peter wrote in message le.rogers.com... Mine is *2J1294etc... It was made in 2002. Does the J mean it was made in the 10th month, October? You know I think you are right... J is October and my L is December. The 1294 is the model number and is the same as mine---interesting... no changes to the R8B between December 1997 and October 2002. Gosh... it's been a long time... I just can't be sure about it. RG That the model number is the same means little w.r.t. changes. Since there is a manufacturing date included, thre could be design changes every month. I know for a fact there was a design change between "9L" and "1I". The RF boards are different. craigm |
craigm wrote in message ... "RadioGuy" wrote in message ... Peter wrote in message le.rogers.com... Mine is *2J1294etc... It was made in 2002. Does the J mean it was made in the 10th month, October? You know I think you are right... J is October and my L is December. The 1294 is the model number and is the same as mine---interesting... no changes to the R8B between December 1997 and October 2002. Gosh... it's been a long time... I just can't be sure about it. RG That the model number is the same means little w.r.t. changes. Since there is a manufacturing date included, thre could be design changes every month. I know for a fact there was a design change between "9L" and "1I". The RF boards are different. craigm Thanks for the reply. What is 'w.r.t.' ? I haven't seen that one. BTW, is there a listing of design changes made by Drake to the R8B over its history? RG |
craigm wrote:
That the model number is the same means little w.r.t. changes. Since there is a manufacturing date included, thre could be design changes every month. I know for a fact there was a design change between "9L" and "1I". The RF boards are different. craigm They changed the FM section. -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 100,000 Newsgroups - 19 Different Servers! =----- |
i notice that my receiver gets very warm just being plugged in and not
turned on is this normal? would running it on a dc power supply make it run cooler and possibly less static or noise from the mains supply? to run it on dc would a computer power supply work??? if not could someone suggest a power supply that would work? thanks charles foster |
chuck wrote:
i notice that my receiver gets very warm just being plugged in and not turned on is this normal? would running it on a dc power supply make it run cooler and possibly less static or noise from the mains supply? to run it on dc would a computer power supply work??? if not could someone suggest a power supply that would work? thanks charles foster It's very cool on 12v, in fact you can then stack things on the R8B. Whether your 12v supply gets hot instead is a matter of what kind of supply you get. Switching supplies run cool mostly, but some also generate birdies. I happen to use an Astron SS-18 and it's okay. I also run about 30 12v devices on it like active antennas, DSPs and ANC-4's, rather than having a proliferation of wall warts for them. Be sure to fuse the 12v output at the supply; it can burn up wires very easily at the rated current of the supply, in case of a short in one of the tiny wires at your end. With wall-warts the internal resistance is enough to prevent fires; not so with a real power supply. -- Ron Hardin On the internet, nobody knows you're a jerk. |
"chuck" wrote in message ... i notice that my receiver gets very warm just being plugged in and not turned on is this normal? Yes, that is heat from the transformer, supply circuits and the display drivers. would running it on a dc power supply make it run cooler and possibly less static or noise from the mains supply? An external supply will move much of the heat generation out of the radio so it will run cooler. However, there may be no technical need to do so. If the external supply is quieter or has better filtering of line noise it may help. Other factors may mask any benefits. If your noise is dominated by noise coming in the antenna, a different power supply may not help. If the dominant noise is coming from the mains, then a noise filtering outlet strip may help. You have to look at yoour entire system to determine where money is best spent. to run it on dc would a computer power supply work??? No, that would be a bad choice. PC supplies are well regulated on 5 and 3.3 volt outputs but may have no regulation on the 12 volt outputs. They are also switching supplies and can generate a lot of noise. They also do not work well, perhap at all, without a proper load on the lower voltage outputs. if not could someone suggest a power supply that would work? Look in the radio's manual for the supply requirements. ( 11-16 volts at 2 amps ) Look for a regulated supply that is rated for a voltage in the required range and one that can supply 3-4 amps. You don't want to buy a supply rated at 2 amps as that means it may be running near 100% capacity and may have poorer regulation and a shorter life. More amps (higher current) is not a problem as long as the radio provides the supply's stated minimum load. Insufficient load can mean poor regulation. Personally, I use a Tripplite PR-3/UL supply for my R-8B. Did I do this for heat? No. Did I do it because the internal supply had noise? No. I did it because the accessory that sits on top of the Drake did work better with an external supply. Since I had the supply anyway, I also connected it to the reciever. I also needed one less 110V outlet as a result. thanks charles foster Ham radio suppliers will have supplies for radios. Usually they will have something for transmitters that can supply many amps. They generally have some suitable for receivers. However the radio has vents for heat dissipation and a lot of surface area to dissipate heat. As long as you don't cover the radio and block the airflow around it you shouldn't have problems even if it is a bit warm. (Or a lot warm as this radio tends to be.) craigm |
chuck wrote:
i notice that my receiver gets very warm just being plugged in and not turned on is this normal? would running it on a dc power supply make it run cooler and possibly less static or noise from the mains supply? to run it on dc would a computer power supply work??? if not could someone suggest a power supply that would work? thanks charles foster The power transformer in the R8 (series) isn't too efficient. That's why it gets quite warm. I run my R8B from a Radio Shack 12-V power supply. They don't make the model I have anymore but their 22-504 would work with your R8B. It's rated at 3-amps and regulated too. Price is $39.99. It goes on sale at least once a year. The R8's run much cooler with DC power. You can hardly tell it's on from the temperature. Anything you can do to reduce heat in an electronic device should help to extend the life of it's componants. -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 100,000 Newsgroups - 19 Different Servers! =----- |
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