|
.......You need to check your facts before you start posturing and posting. You end up looking like a fool when you're corrected. Where was I corrected? I'll spell it out for you................. You said the term "Line Flattener" was "more voodoo CB terminology" All one has to do to disprove your claim is search for "Line Flattener" The results show that all references to the term "Line Flattener" are not CB related or voodoo. You were just corrected. |
On Sun, 31 Jul 2005 15:08:26 -0700, "John Smith"
wrote in : Frank: OK, you didn't get it the last time I tried, let me be a bit more blunt: If, at this time, any are left here which do not realize you are an idiot--they are a BIGGER IDIOT THAN YOU! As quoted almost directly from "How To Win a Schoolyard Argument" by Pee Wee Herman. Go crawl back under your rock. ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
Frank:
My words are simply direct and offend you... However, they are absolute truth... too bad you can't understand without someone having to strike you across the top of the head with a 2X4! John "Frank Gilliland" wrote in message ... On Sun, 31 Jul 2005 15:08:26 -0700, "John Smith" wrote in : Frank: OK, you didn't get it the last time I tried, let me be a bit more blunt: If, at this time, any are left here which do not realize you are an idiot--they are a BIGGER IDIOT THAN YOU! As quoted almost directly from "How To Win a Schoolyard Argument" by Pee Wee Herman. Go crawl back under your rock. ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
On Sun, 31 Jul 2005 15:04:17 -0700, "John Smith"
wrote in : Professor: Frank is an idiot, and rather like a piece of used gum you step on, on a hot day--can't get it off yer shoe! Wow, that seminar on third-grade witticism is really paying off for you, John. Just three more weeks and you'll get your certificate! ROFLOL!!!!!! I agree! ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
Frank... I wish I was like you... never wrong... and never had to be
corrected. Professor www.telstar-electronics.com |
On 31 Jul 2005 15:58:33 -0700, "Professor"
wrote in .com: Frank... I wish I was like you... never wrong... and never had to be corrected. Yes, I already knew that, Brian. I tried to turn you onto the right path years ago when you were hacking basic Motorola AN circuits that were intended to be starting designs for engineers, not finished products to be built by CB ampheads. But you were just too impatient to get your "product" sold and get your share of that illegal market. After damage control backfired in your face (because of your lack of education) you vanished. Now you pop back up to spam the group every time you think you have an improvement. You haven't made very many changes, but look at the ones you -did- make -- all were suggestions that I made when I told you all the reasons your amp sucked. Maybe you learned those things from me or maybe somewhere else, but I was right and you know it. But feel free if you want to make more smart-assed remarks about my education and experience -- it's not like I expect you to be grateful or something. After all, you're just in this for the money. ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
Frank:
Frankly (pun intended) you strike me as an idiot. Probably one who has picked up most if not all of his "knowledge" from magazines, and books on his own--no formal training, no degree, not having held a job in the field--you come hear like an authority. Krist, the hams know more than you do! John "Frank Gilliland" wrote in message ... On 31 Jul 2005 15:58:33 -0700, "Professor" wrote in .com: Frank... I wish I was like you... never wrong... and never had to be corrected. Yes, I already knew that, Brian. I tried to turn you onto the right path years ago when you were hacking basic Motorola AN circuits that were intended to be starting designs for engineers, not finished products to be built by CB ampheads. But you were just too impatient to get your "product" sold and get your share of that illegal market. After damage control backfired in your face (because of your lack of education) you vanished. Now you pop back up to spam the group every time you think you have an improvement. You haven't made very many changes, but look at the ones you -did- make -- all were suggestions that I made when I told you all the reasons your amp sucked. Maybe you learned those things from me or maybe somewhere else, but I was right and you know it. But feel free if you want to make more smart-assed remarks about my education and experience -- it's not like I expect you to be grateful or something. After all, you're just in this for the money. ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
Geez fellas... I didnt mean to start a war here. I'm just a truck driver
that wants to do things as right as I can given my situation with pretty much having a different truck everyday. After reading through this entire thread I think I'm even more confused :-) so here's what I'm gonna do. I will call a few of these cb shops that I've seen on the web and ask them for their advise and explain to them my circumstances of wanting a good high quality radio "no amp or stupid toys that make noise" and telling them that I'll be in a different truck and wont be able to set the SWR and ask them what would be a good setup for me. One last question for you all that have been helpful. Can you give me a few sites to good internet dealers since there arent any physical shops left in my area anymore? Thanks again for your help guys. |
LOL... no problem... Frank is a little edgy... as usual. You should
pick up something like this http://batterysupply.com/cbantacc1.htm This is what we've been talking about... a so called "matchbox"... Professor www.telstar-electronics.com |
driver42:
I would replace the term you are using "set the swr", with "adjust the antenna for low or lowest swr." For example, you question might be stated as, "I will not be able to adjust the antenna for a match and low SWR--and will have to use it as it is, so will a match box allow me to still operate my radio into the antenna, no matter if the swr is low, or not?" You can ask this same question in rec.radio.amateur.antenna, however, they refer to a "match box" as an "L-Match", same thing in most cases, however there are different types of "match boxes", some balanced, some unbalanced, since you are using coax, you will be using an unbalanced one (ALL cb "match boxes" will be "unbalanced") So, if in rec.radio.amateur.antenna you ask, "Can I use a "L-Match" to lower the SWR into an antenna which I cannot physically adjust, but is cut for the right frequency?" You will begin another debate there. grin But, if you think you are confused here, you will even be more confused there. They will start laying technical terms on you faster than a pervert can come up with lollipops for the kids! And, the hair splitting over semantics, syntax and terms will spin your head! However, after you chat with the shop techs, please, report back on your findings for others who might post the same question... thanks in advance... Warmest regards, John "driver42" wrote in message 5... Geez fellas... I didnt mean to start a war here. I'm just a truck driver that wants to do things as right as I can given my situation with pretty much having a different truck everyday. After reading through this entire thread I think I'm even more confused :-) so here's what I'm gonna do. I will call a few of these cb shops that I've seen on the web and ask them for their advise and explain to them my circumstances of wanting a good high quality radio "no amp or stupid toys that make noise" and telling them that I'll be in a different truck and wont be able to set the SWR and ask them what would be a good setup for me. One last question for you all that have been helpful. Can you give me a few sites to good internet dealers since there arent any physical shops left in my area anymore? Thanks again for your help guys. |
professor:
Funny, that pic won't show in my browser... John "Professor" wrote in message oups.com... LOL... no problem... Frank is a little edgy... as usual. You should pick up something like this http://batterysupply.com/cbantacc1.htm This is what we've been talking about... a so called "matchbox"... Professor www.telstar-electronics.com |
On Sun, 31 Jul 2005 18:54:41 -0500, driver42 wrote
in : Geez fellas... I didnt mean to start a war here. I'm just a truck driver that wants to do things as right as I can given my situation with pretty much having a different truck everyday. After reading through this entire thread I think I'm even more confused :-) First rule: Avoid any gimmicks or modifications that claim to give you some profound increase in performance. It doesn't work that way. The laws of physics dictate that there are only two ways to significantly improve your performance: use a bigger antenna and/or use more power. Leave the gadgets and gizmos for the neurotics that want to squeeze every last milliwatt from their radios (and the morons who like to watch meter needles bounce). Second rule: Practically all CB radios are the same in that they have an output impedance of 50 ohms. This means that the antennas which are installed on these trucks are most likely -already- adjusted for best SWR to a 50-ohm radio, and will therefore work just fine with -any- CB radio you choose to buy, matchbox or not. Third rule: Don't pray to the SWR god. A dummy load will give you an SWR of 1:1 but it doesn't make a very good antenna. Your antenna is best tuned with a field strength meter, and many times the best field strength does -not- coincide with best SWR. If the radio you choose has an SWR meter included, great. Think of it as a go/no-go meter: below 3:1 and everything is fine; above 3:1 and you need to check for a major malfunction like a disconnected cable, corroded connectors, busted antenna, etc. so here's what I'm gonna do. I will call a few of these cb shops that I've seen on the web and ask them for their advise and explain to them my circumstances of wanting a good high quality radio "no amp or stupid toys that make noise" and telling them that I'll be in a different truck and wont be able to set the SWR and ask them what would be a good setup for me. One last question for you all that have been helpful. Can you give me a few sites to good internet dealers since there arent any physical shops left in my area anymore? Thanks again for your help guys. Forget the internet CB shops -- let your fingers do the walking and contact one of your local commercial radio communication shops. They do this stuff professionally, they will verify everything I have said, and will give you the -straight- scoop instead of a bunch of CB hocus-pocus designed to sell crap to nieve CBers like Brian does. ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
On Sun, 31 Jul 2005 16:23:02 -0700, "John Smith"
wrote in : Frank: Frankly (pun intended) you strike me as an idiot. Probably one who has picked up most if not all of his "knowledge" from magazines, and books on his own--no formal training, no degree, not having held a job in the field--you come hear like an authority. Krist, the hams know more than you do! Hams are, by definition, amateurs. Radio has been my -profession- for about 25 years, including a BS in EE from EWU (including a minor in communications). I worked as a BE for about 12 years, before that at a radio comm shop (while going to college), and before that as a radio tech in the USMC (MOS 2841). Nowdays I have my own part-time shop for both radio and audio equipment, and do some bartending on the side (better perks than any radio work!). Oh yeah..... and I've been a CBer since I was about 10. And if you have -any- doubts about what I am saying here then feel free to browse the archives for this group and challenge me on any technical issue on which I have commented and you think I'm wrong. Otherwise, go troll some other newsgroup. Maybe some group under the topic of assembly language since you claim to be a "wizard" at it. Or we can discuss that topic here -- I'm fairly adept at writing my own assembly subroutines, especially device drivers for automation control and data aquisition (for custom interface cards that I also designed myself). So what'll it be, "John"? ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
On Sun, 31 Jul 2005 15:48:55 -0700, "John Smith"
wrote in : Frank: My words are simply direct and offend you... Gee, more crystal ball gazing. Like -that- wasn't expected. However, they are absolute truth... Truth is relative; facts are absolute. You have ignored the fact that most CBers -don't- use a matchbox and their radios don't blow up. Address the facts, not opinions that you claim to be the "truth". too bad you can't understand without someone having to strike you across the top of the head with a 2X4! Finally, an ad baculum. Trolls like you usually threaten me after the first two or three replies. So what took you so long? ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
Frank:
From your text, I still believe myself correct... else you are very adept at being able to hide an education... John "Frank Gilliland" wrote in message ... On Sun, 31 Jul 2005 16:23:02 -0700, "John Smith" wrote in : Frank: Frankly (pun intended) you strike me as an idiot. Probably one who has picked up most if not all of his "knowledge" from magazines, and books on his own--no formal training, no degree, not having held a job in the field--you come hear like an authority. Krist, the hams know more than you do! Hams are, by definition, amateurs. Radio has been my -profession- for about 25 years, including a BS in EE from EWU (including a minor in communications). I worked as a BE for about 12 years, before that at a radio comm shop (while going to college), and before that as a radio tech in the USMC (MOS 2841). Nowdays I have my own part-time shop for both radio and audio equipment, and do some bartending on the side (better perks than any radio work!). Oh yeah..... and I've been a CBer since I was about 10. And if you have -any- doubts about what I am saying here then feel free to browse the archives for this group and challenge me on any technical issue on which I have commented and you think I'm wrong. Otherwise, go troll some other newsgroup. Maybe some group under the topic of assembly language since you claim to be a "wizard" at it. Or we can discuss that topic here -- I'm fairly adept at writing my own assembly subroutines, especially device drivers for automation control and data aquisition (for custom interface cards that I also designed myself). So what'll it be, "John"? ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
Frank:
U R an idiot... U can't tell the difference between forced to use an "L-Match" to be able to use a radio and thinking it is a "magic device." Troll? I was hoping you were just a troll instead of a ma'roon! At least a troll can be communicated with... John "Frank Gilliland" wrote in message ... On Sun, 31 Jul 2005 18:54:41 -0500, driver42 wrote in : Geez fellas... I didnt mean to start a war here. I'm just a truck driver that wants to do things as right as I can given my situation with pretty much having a different truck everyday. After reading through this entire thread I think I'm even more confused :-) First rule: Avoid any gimmicks or modifications that claim to give you some profound increase in performance. It doesn't work that way. The laws of physics dictate that there are only two ways to significantly improve your performance: use a bigger antenna and/or use more power. Leave the gadgets and gizmos for the neurotics that want to squeeze every last milliwatt from their radios (and the morons who like to watch meter needles bounce). Second rule: Practically all CB radios are the same in that they have an output impedance of 50 ohms. This means that the antennas which are installed on these trucks are most likely -already- adjusted for best SWR to a 50-ohm radio, and will therefore work just fine with -any- CB radio you choose to buy, matchbox or not. Third rule: Don't pray to the SWR god. A dummy load will give you an SWR of 1:1 but it doesn't make a very good antenna. Your antenna is best tuned with a field strength meter, and many times the best field strength does -not- coincide with best SWR. If the radio you choose has an SWR meter included, great. Think of it as a go/no-go meter: below 3:1 and everything is fine; above 3:1 and you need to check for a major malfunction like a disconnected cable, corroded connectors, busted antenna, etc. so here's what I'm gonna do. I will call a few of these cb shops that I've seen on the web and ask them for their advise and explain to them my circumstances of wanting a good high quality radio "no amp or stupid toys that make noise" and telling them that I'll be in a different truck and wont be able to set the SWR and ask them what would be a good setup for me. One last question for you all that have been helpful. Can you give me a few sites to good internet dealers since there arent any physical shops left in my area anymore? Thanks again for your help guys. Forget the internet CB shops -- let your fingers do the walking and contact one of your local commercial radio communication shops. They do this stuff professionally, they will verify everything I have said, and will give you the -straight- scoop instead of a bunch of CB hocus-pocus designed to sell crap to nieve CBers like Brian does. ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
On Mon, 1 Aug 2005 07:55:47 -0700, "John Smith"
wrote in : Frank: U R an idiot... U can't tell the difference between forced to use an "L-Match" to be able to use a radio and thinking it is a "magic device." Focus, "John"..... where, in any of his posts, did he say he was being "forced" to use any type of matching device? He didn't. Troll? I was hoping you were just a troll instead of a ma'roon! At least a troll can be communicated with... So you wrote the book on trolls? ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
Hams are, by definition, amateurs. Radio has been my -profession- for about 25 years, including a BS in EE from EWU (including a minor in communications). I worked as a BE for about 12 years, before that at a radio comm shop (while going to college), and before that as a radio tech in the USMC (MOS 2841). Nowdays I have my own part-time shop for both radio and audio equipment, and do some bartending on the side (better perks than any radio work!). Oh yeah..... and I've been a CBer since I was about 10. You left out the whole truth. In addition to your one sided horn blowing of above...................... 1. At age 10 you decided that you were tired of being beat. You learned to trick other kids into believing that you had a value other than that of a punching bag. You accomplished this by starting to go down a path of deceit that you continue to go down today. 2. At age 33 you decided you'd give up on girls. You continue to be a virgin to this day. ( not counting farm animals) 3. At the advent of the Internet you discovered that you could puff up your low self esteem through a series of put down others to inflate yourself posts. You quickly learned that the truth is not this issue. All that matters is to make yourself look good. Just spew a bunch of non related technical matter into a post and no one will be the wiser. There are more. These are just the obvious ones. If others would like, they can continue the list. It shouldn't be to difficult. 4............ 5.......... ect. |
On Mon, 1 Aug 2005 07:52:40 -0700, "John Smith"
wrote in : Frank: From your text, I still believe myself correct... There are facts and then there are your beliefs. Learn to distinguish between the two. else you are very adept at being able to hide an education... Like I said before -- feel free to browse through the archives. Do you need me to post the URL? ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
Frank:
Obviously you need to go back and read his original post, all the other guys here got it I think... Look, you are now just standing there like an idiot with his pants pulled down... John "Frank Gilliland" wrote in message ... On Mon, 1 Aug 2005 07:55:47 -0700, "John Smith" wrote in : Frank: U R an idiot... U can't tell the difference between forced to use an "L-Match" to be able to use a radio and thinking it is a "magic device." Focus, "John"..... where, in any of his posts, did he say he was being "forced" to use any type of matching device? He didn't. Troll? I was hoping you were just a troll instead of a ma'roon! At least a troll can be communicated with... So you wrote the book on trolls? ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
On Mon, 1 Aug 2005 14:14:25 -0700, "John Smith"
wrote in : Frank: Obviously you need to go back and read his original post, all the other guys here got it I think... Look, you are now just standing there like an idiot with his pants pulled down... Blah, blah, blah. Stay on topic. Once again, where did he say he was being "forced" to use any type of matching device? Where did he say his SWR was 5:1? And why can't you address the fact that millions of CBers don't use a matchbox yet don't blow their finals? ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
Frank:
Go home fool, there isn't anyone left here now wondering if you are a ma'roon, you have shown all... you can hang around and try to trick the newcomers, I guess... John "Frank Gilliland" wrote in message ... On Mon, 1 Aug 2005 14:14:25 -0700, "John Smith" wrote in : Frank: Obviously you need to go back and read his original post, all the other guys here got it I think... Look, you are now just standing there like an idiot with his pants pulled down... Blah, blah, blah. Stay on topic. Once again, where did he say he was being "forced" to use any type of matching device? Where did he say his SWR was 5:1? And why can't you address the fact that millions of CBers don't use a matchbox yet don't blow their finals? ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
On Mon, 1 Aug 2005 14:31:01 -0700, "John Smith"
wrote in : Frank: Go home fool, there isn't anyone left here now wondering if you are a ma'roon, you have shown all... you can hang around and try to trick the newcomers, I guess... Let's try this again, but this time I'll seperate the issues so you don't get confused: 1) Where did the original poster say he was being "forced" to use any type of matching device? 2) Where did the original poster say his SWR was 5:1? 3) Since very few CBers use a matchbox, why don't the millions of other CB radios have blown finals? Now is -that- too hard for you to comprehend? You made the claims, now back them up. ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
Frank:
FOOL!!! His original post makes ALL of that clear, if not, one or two of his other posts after will fill you in... John "Frank Gilliland" wrote in message ... On Mon, 1 Aug 2005 14:31:01 -0700, "John Smith" wrote in : Frank: Go home fool, there isn't anyone left here now wondering if you are a ma'roon, you have shown all... you can hang around and try to trick the newcomers, I guess... Let's try this again, but this time I'll seperate the issues so you don't get confused: 1) Where did the original poster say he was being "forced" to use any type of matching device? 2) Where did the original poster say his SWR was 5:1? 3) Since very few CBers use a matchbox, why don't the millions of other CB radios have blown finals? Now is -that- too hard for you to comprehend? You made the claims, now back them up. ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
wrote in message ... Hams are, by definition, amateurs. Radio has been my -profession- for about 25 years, including a BS in EE from EWU (including a minor in communications). I worked as a BE for about 12 years, before that at a radio comm shop (while going to college), and before that as a radio tech in the USMC (MOS 2841). Nowdays I have my own part-time shop for both radio and audio equipment, and do some bartending on the side (better perks than any radio work!). Oh yeah..... and I've been a CBer since I was about 10. You left out the whole truth. In addition to your one sided horn blowing of above...................... 1. At age 10 you decided that you were tired of being beat. You learned to trick other kids into believing that you had a value other than that of a punching bag. You accomplished this by starting to go down a path of deceit that you continue to go down today. 2. At age 33 you decided you'd give up on girls. You continue to be a virgin to this day. ( not counting farm animals) 3. At the advent of the Internet you discovered that you could puff up your low self esteem through a series of put down others to inflate yourself posts. You quickly learned that the truth is not this issue. All that matters is to make yourself look good. Just spew a bunch of non related technical matter into a post and no one will be the wiser. There are more. These are just the obvious ones. If others would like, they can continue the list. It shouldn't be to difficult. 4............ 5.......... ect. Is your name "ect"? |
On Mon, 1 Aug 2005 14:46:55 -0700, "John Smith"
wrote in : Frank: FOOL!!! His original post makes ALL of that clear, if not, one or two of his other posts after will fill you in... Well, let's find out just what he said, shall we? ===== On Sat, 30 Jul 2005 11:45:50 -0500, driver42 wrote in : Hi, If I'm not able to set the SWR in the trucks that I drive will it hurt the radio or just give me decreased range? ===== I don't see anything about a 5:1 SWR. I don't see anything about being "forced" to use a matching device. Now is a good time to dispell more CB mythology: Many of you already know that in order to double your range you need -four- times the power. But it also works the other way -- if you reduce your power to one fourth (i.e, you are losing 3/4 of your power, which would mean a pretty high SWR) you have -only- decreased your range by one half. So an SWR of 2:1 or 3:1 (or, conversely, squeezing a couple extra watts with a tweak-n-peak) isn't going to have a noticable effect on your range. Let's continue with the scenario that you are losing 3 watts (3/4 of your power) due purely to reflection. Ok, so that power gets dumped back into the final where it's dissipated as heat. That's three extra watts in a transistor conservatively rated to handle a certain amount of -continuous- heat dissipation, which is usually something along the lines of 4 watts. Mind you that 3 or 4 watts isn't a whole lot of power; if the heat sink can handle 4 watts without a problem then an extra 3 watts isn't exactly going to melt the knobs. Regardless, the final -isn't- dissipating this heat continuously (unless the OP is one of those asshole broadcast types that keys down for half an hour), so normal operation certainly isn't going to "cook" the transistor. And I already mentioned that these transistors are rated to handle 30:1 SWR -continuously- without damage. If you want proof of these FACTS then feel free to refer to the data sheets for the final transistors most commonly used in CB finals. ===== On Sat, 30 Jul 2005 13:27:48 -0500, driver42 wrote in : My problem is that I'll be moving from truck to truck so I wont have time to set the SWR correctly. Most of our trucks have factory installed double antenna's which I'm not too thrilled about. ===== I don't see anything about a 5:1 SWR. I don't see anything about being "forced" to use a matching device. Looks to me like he said the trucks already have antennas installed. Assuming they are CB antennas, it's more than likely that the antennas have already been trimmed for use with a 50-ohm radio (since all CB radios are 50-ohm radios). Unless something is broke, the antennas are probably going to give a reasonably good match to -whatever- radio he picks (because, once again, all CB radios are 50-ohm radios). ===== On Sat, 30 Jul 2005 21:33:43 -0500, driver42 wrote in : My problem is that I'll be in a different truck everyday and wont be able to set the SWR the way I want to. ===== I don't see anything about a 5:1 SWR. I don't see anything about being "forced" to use a matching device. What I -do- see is concern about setting the SWR, which is another mythconception (and not just with CBers but with a lot of hams). A 1:1 SWR does -NOT- mean the antenna is operating at it's best efficiency. It -DOES- mean that the load is 50 ohms nonreactive. But a 50 ohm nonreactive load can be darn near anything: a carbon resistor, a dummy load, a bad coax working as a tuned stub, or even a corroded 9' whip with a mount caked in mud (seen both scenarios firsthand). As I stated before, an SWR meter is a go/no-go meter. If it normally reads 2:1 then suddenly jumps to 6:1, that's a good indication that something has gone wrong with the antenna or coax. And -THAT'S- what an SWR meter is good for..... a "something's wrong" meter (IMO, they should probably be replaced with idiot lights like those in a car.) If you want to tune your antenna for best efficiency you -NEED- to use a field strenght meter. Period. Now........ once again........ 1) Where did the original poster say he was being "forced" to use any type of matching device? 2) Where did the original poster say his SWR was 5:1? 3) Since very few CBers use a matchbox, why don't the millions of other CB radios have blown finals? ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
"Frank Gilliland" wrote in message ... On Sun, 31 Jul 2005 08:36:55 -0700, "John Smith" wrote in : tnom: Yep, I always worry about terminology... It will allow you to tune the antenna/coax from a 5:1 to a 1:1 and run your transceiver into it--WITHOUT BURNING OUT THE FINALS. Guess what, John: Most of the finals used in CB radios today (and for the past 20+ years) can withstand SWR of 30:1 indefinitely. And that includes the power transistors used in amps, too. Frank, to be fair, you must now finish this statement. Even at 3 watts, some of these tiny radios and chassis don't have enough mass to dissipate the heat that will be created by the miss-match. Sure, you can add a larger sink and forced air cooling, but stock, they won't take it. And it's never a bad idea to check the heat sink and mica insulator and replace the grease with Arctic Silver 5 or some comparable superior thermal compound. I lost an MRF477 due to improper installation by the manufacturer. The screw had been stripped and was not making proper contact with the heat sink, and that was with a reasonable SWR. |
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On Mon, 01 Aug 2005 22:49:22 GMT, "U-Know-Who"
wrote in : "Frank Gilliland" wrote in message .. . On Sun, 31 Jul 2005 08:36:55 -0700, "John Smith" wrote in : tnom: Yep, I always worry about terminology... It will allow you to tune the antenna/coax from a 5:1 to a 1:1 and run your transceiver into it--WITHOUT BURNING OUT THE FINALS. Guess what, John: Most of the finals used in CB radios today (and for the past 20+ years) can withstand SWR of 30:1 indefinitely. And that includes the power transistors used in amps, too. Frank, to be fair, you must now finish this statement. Even at 3 watts, some of these tiny radios and chassis don't have enough mass to dissipate the heat that will be created by the miss-match. Sure, you can add a larger sink and forced air cooling, but stock, they won't take it. I have yet to see a CB radio that couldn't handle a 3:1 SWR (unless it was improperly installed, as you mention below). And I know that those plastic Cobra 19's and those micro-Midlands can be keyed at a normal duty cycle without -anything- hooked up to the antenna jack. Some of the older radios are a bit fussy, especially those with the 2SC799. But those are becoming quite rare -- probably for just that reason. The 2SC2078 and other modern CB finals are solid transistors that are pretty darn hard to blow, with or -without- a heatsink (the TO-220 case dissipates quite a bit of heat all by itself). And it's never a bad idea to check the heat sink and mica insulator and replace the grease with Arctic Silver 5 or some comparable superior thermal compound. I lost an MRF477 due to improper installation by the manufacturer. The screw had been stripped and was not making proper contact with the heat sink, and that was with a reasonable SWR. I have seen a few Unidens with those thick, grey, rubber heat-sink insulators -- worthless crap like that shouldn't have even been installed at the factory. Another problem I've seen is amp junkies (audio and radio) who replace their own transistors and use -WAY- too much heat sink grease. They were never taught that it's only meant to fill the air gaps where there's no direct contact -- IOW, just a little dab'll do ya. But I will qualify my statement to say that the RF transistors are rated for continuous 30:1 SWR -only- when they have a sufficient heatsink. ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
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Can you give me a few sites to good internet dealers since there arent any physical shops left in my area anymore? There are plenty of shops in eastern Pa. Where do you want to travel to find a shop? |
From: (Professor)
LOL... no problem... Frank is a little edgy... as usual. You should pick up something like this http://batterysupply.com/cbantacc1.htm This is what we've been talking about... a so called "matchbox"... Professor www.telstar-electronics.com _ How 'bout them changes to your amp, Mr. Griff? Were they truly rec.radio.cb inspired? |
From: (John=A0Smith)
professor: Funny, that pic won't show in my browser... John _ "Professor" wrote in message oups.com... LOL... no problem... Frank is a little edgy... as usual. You should pick up something like this http://batterysupply.com/cbantacc1.htm This is what we've been talking about... a so called "matchbox"... Professor www.telstar-electronics.com _ Perhaps you got great spam control not unlike myself. Anyhoo, his link takes you to a CB dealer's website in Paris, Illinois. |
On Mon, 1 Aug 2005 19:10:22 -0400, (I
AmnotGeorgeBush) wrote in : From: (driver42 AKA N3CVJ) Hi, Hi Dave! If I'm not able to set the SWR in the trucks that I drive will it hurt the radio or just give me decreased range? What kind of truck did you buy, now? You may have bought the wrong kind of truck for the radio. LOL! Did Dave finally sell his boat? ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
"Frank Gilliland" wrote in message ... On Mon, 01 Aug 2005 22:49:22 GMT, "U-Know-Who" wrote in : "Frank Gilliland" wrote in message . .. On Sun, 31 Jul 2005 08:36:55 -0700, "John Smith" wrote in : tnom: Yep, I always worry about terminology... It will allow you to tune the antenna/coax from a 5:1 to a 1:1 and run your transceiver into it--WITHOUT BURNING OUT THE FINALS. Guess what, John: Most of the finals used in CB radios today (and for the past 20+ years) can withstand SWR of 30:1 indefinitely. And that includes the power transistors used in amps, too. Frank, to be fair, you must now finish this statement. Even at 3 watts, some of these tiny radios and chassis don't have enough mass to dissipate the heat that will be created by the miss-match. Sure, you can add a larger sink and forced air cooling, but stock, they won't take it. I have yet to see a CB radio that couldn't handle a 3:1 SWR (unless it was improperly installed, as you mention below). And I know that those plastic Cobra 19's and those micro-Midlands can be keyed at a normal duty cycle without -anything- hooked up to the antenna jack. Some of the older radios are a bit fussy, especially those with the 2SC799. But those are becoming quite rare -- probably for just that reason. The 2SC2078 and other modern CB finals are solid transistors that are pretty darn hard to blow, with or -without- a heatsink (the TO-220 case dissipates quite a bit of heat all by itself). And it's never a bad idea to check the heat sink and mica insulator and replace the grease with Arctic Silver 5 or some comparable superior thermal compound. I lost an MRF477 due to improper installation by the manufacturer. The screw had been stripped and was not making proper contact with the heat sink, and that was with a reasonable SWR. I have seen a few Unidens with those thick, grey, rubber heat-sink insulators -- worthless crap like that shouldn't have even been installed at the factory. Another problem I've seen is amp junkies (audio and radio) who replace their own transistors and use -WAY- too much heat sink grease. They were never taught that it's only meant to fill the air gaps where there's no direct contact -- IOW, just a little dab'll do ya. Ain't that the truth! It's not magic, and like you said, it's only to fill the microscopic gaps. And to be honest, you can do a lot more by lapping the surfaces to make sure both surfaces are as flat as possible. This applies to all types of heat sink mating surfaces. |
From: (Frank=A0Gilliland)
On Sun, 31 Jul 2005 18:54:41 -0500, driver42 wrote in : Geez fellas... I didnt mean to start a war here. I'm just a turkey driver that wants to do things as right as I can given my situation with pretty much having a different turkey everyday. After reading through this entire thread I think I'm even more confused :-) _ Frank Gilliland wrote: First rule: Avoid any gimmicks or modifications that claim to give you some profound increase in performance. It doesn't work that way. The laws of physics dictate that there are only two ways to significantly improve your performance: use a bigger antenna and/or use more power. Leave the gadgets and gizmos for the neurotics that want to squeeze every last milliwatt from their radios (and the morons who like to watch meter needles bounce). You like power mics on CB, Frank? Second rule: Practically all CB radios are the same That's why I like an imported export for the mobile. Of course, the right Icom might work ok, too. in that they have an output impedance of 50 ohms. This means that the antennas which are installed on these trucks are most likely -already- adjusted for best SWR to a 50-ohm radio, and will therefore work just fine with -any- CB radio you choose to buy, matchbox or not. Third rule: Don't pray to the SWR god. A dummy load will give you an SWR of 1:1 but it doesn't make a very good antenna. Your antenna is best tuned with a field strength meter, and many times the best field strength does -not- coincide with best SWR. If the radio you choose has an SWR meter included, great. Think of it as a go/no-go meter: below 3:1 and everything is fine; above 3:1 and you need to check for a major malfunction like a disconnected cable, corroded connectors, busted antenna, etc. Truckin' wrote: so here's what I'm gonna do. I will call a few of these cb shops that I've seen on the web and ask them for their advise and explain to them my circumstances of wanting a good high quality radio "no amp or stupid toys that make noise" and telling them that I'll be in a different truck and wont be able to set the SWR and ask them what would be a good setup for me. One last question for you all that have been helpful. Can you give me a few sites to good internet dealers since there arent any physical shops left in my area anymore? Thanks again for your help guys. Frank Gilliand wrote: Forget the internet CB shops -- And here I was gonna send him to a TA or similar truck stop near Philla Philadelphia. let your fingers do the walking and contact one of your local commercial radio communication shops. They do this stuff professionally, they will verify everything I have said, and will give you the -straight- scoop instead of a bunch of CB hocus-pocus designed to sell crap to naive CBers like Brian does. Too bad you don't like the extreme heat. One or another of the many stations here are always hiring, but then again, the doors are revolving types mostly at Clear Channel or the other scumbags and they own it all. We have one community radio station that has lasted over the years on donations and fundraisers. Tough to hold out when you're independent. |
From: (Frank=A0Gilliland)
On Mon, 1 Aug 2005 19:10:22 -0400, (I AmnotGeorgeBush) wrote in : From: (driver42 AKA N3CVJ) Hi, Hi Dave! If I'm not able to set the SWR in the trucks that I drive will it hurt the radio or just give me decreased range? =A0=A0What kind of truck did you buy, now? You may have bought the wrong kind of truck for the radio. LOL! Did Dave finally sell his boat? That's what I was thinking, that he sold the boat and bought a new truck. |
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From: (driver42)
(I AmnotGeorgeBush) wrote in news:8749-42EEAF4F-90 @storefull-3252.bay.webtv.net: Can you give me a few sites to good internet dealers since there arent any physical shops left in my area anymore? There are plenty of shops in eastern Pa. Where do you want to travel to find a shop? How did you know I was in Eastern, PA? =A0 Anyway, I'm near Allentown so I would travel 60-70 miles to a good shop that wouldnt blow smoke up my ass and actually give me sound advise. Thought you were seeking a radio. Sound advice is buyer beware no matter from who you buy. K & K Electronics in Allentown no longer in business? Hill Top Mobile in Wilkes Barre? There's a CB shop in Gettysburg, too. Try A & S in Lancaster. |
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