Home |
Search |
Today's Posts |
|
#1
|
|||
|
|||
The receiver will definitely have a high impedance input, and for the 50 ohm
input, I will have a pad on the main PC board that the SO-239 connector center terminal can be soldered to. I wasn't too crazy about that BNC approach either. Hopefully, the receiver should hit the market by the end of summer. I will be leaving the company at the end of April, so I will get everything done that I can. I should have an initial board layout done in the next two weeks. Pete "starman" wrote in message ... Hi Pete, If you have to choose only one antenna impedance input, the high one would probably be more useful, particularly for users of real long wires like beverage antennas. However those like myself with an inverted-L which uses a matching transformer and coax lead would appreciate the 50-ohm input. Is there a reason why you are considering only a BNC connector for the low impedance input? How about a PC board mounted female F-connector which can be adapted by the users to their antenna lead wire. Any idea on when the MW receiver may hit the market? Pete KE9OA wrote: I am finishing up the MW receiver..............anyway, I have a high impedance antenna input in addition to the 50 ohm input. With this type of receiver is the high impedance input enough, or would interested parties rather have both inputs. The reason I am asking this is because my employer would like to have all jacks mounted to the main PC board. The only thing I have been able to find so far has been a right angle BNC connector for the 50 ohm input. Opinions welcomed! Pete ----== 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 =---- |
#2
|
|||
|
|||
Pete KE9OA wrote: The receiver will definitely have a high impedance input, and for the 50 ohm input, I will have a pad on the main PC board that the SO-239 connector center terminal can be soldered to. I wasn't too crazy about that BNC approach either. Hopefully, the receiver should hit the market by the end of summer. I will be leaving the company at the end of April, so I will get everything done that I can. I should have an initial board layout done in the next two weeks. What 'brand' will the radio have on it? dxAce Michigan USA Pete "starman" wrote in message ... Hi Pete, If you have to choose only one antenna impedance input, the high one would probably be more useful, particularly for users of real long wires like beverage antennas. However those like myself with an inverted-L which uses a matching transformer and coax lead would appreciate the 50-ohm input. Is there a reason why you are considering only a BNC connector for the low impedance input? How about a PC board mounted female F-connector which can be adapted by the users to their antenna lead wire. Any idea on when the MW receiver may hit the market? Pete KE9OA wrote: I am finishing up the MW receiver..............anyway, I have a high impedance antenna input in addition to the 50 ohm input. With this type of receiver is the high impedance input enough, or would interested parties rather have both inputs. The reason I am asking this is because my employer would like to have all jacks mounted to the main PC board. The only thing I have been able to find so far has been a right angle BNC connector for the 50 ohm input. Opinions welcomed! Pete ----== 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 =---- |
#3
|
|||
|
|||
I am thinking that it will be either Silicon Engines or most likely,
Quadphase. This company has two divisions. Pete "dxAce" wrote in message ... Pete KE9OA wrote: The receiver will definitely have a high impedance input, and for the 50 ohm input, I will have a pad on the main PC board that the SO-239 connector center terminal can be soldered to. I wasn't too crazy about that BNC approach either. Hopefully, the receiver should hit the market by the end of summer. I will be leaving the company at the end of April, so I will get everything done that I can. I should have an initial board layout done in the next two weeks. What 'brand' will the radio have on it? dxAce Michigan USA Pete "starman" wrote in message ... Hi Pete, If you have to choose only one antenna impedance input, the high one would probably be more useful, particularly for users of real long wires like beverage antennas. However those like myself with an inverted-L which uses a matching transformer and coax lead would appreciate the 50-ohm input. Is there a reason why you are considering only a BNC connector for the low impedance input? How about a PC board mounted female F-connector which can be adapted by the users to their antenna lead wire. Any idea on when the MW receiver may hit the market? Pete KE9OA wrote: I am finishing up the MW receiver..............anyway, I have a high impedance antenna input in addition to the 50 ohm input. With this type of receiver is the high impedance input enough, or would interested parties rather have both inputs. The reason I am asking this is because my employer would like to have all jacks mounted to the main PC board. The only thing I have been able to find so far has been a right angle BNC connector for the 50 ohm input. Opinions welcomed! Pete ----== 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 =---- |
#4
|
|||
|
|||
Pete KE9OA wrote: I am thinking that it will be either Silicon Engines or most likely, Quadphase. This company has two divisions. Well, Silicon Engines does sound pretty neat. Pete "dxAce" wrote in message ... Pete KE9OA wrote: The receiver will definitely have a high impedance input, and for the 50 ohm input, I will have a pad on the main PC board that the SO-239 connector center terminal can be soldered to. I wasn't too crazy about that BNC approach either. Hopefully, the receiver should hit the market by the end of summer. I will be leaving the company at the end of April, so I will get everything done that I can. I should have an initial board layout done in the next two weeks. What 'brand' will the radio have on it? dxAce Michigan USA Pete "starman" wrote in message ... Hi Pete, If you have to choose only one antenna impedance input, the high one would probably be more useful, particularly for users of real long wires like beverage antennas. However those like myself with an inverted-L which uses a matching transformer and coax lead would appreciate the 50-ohm input. Is there a reason why you are considering only a BNC connector for the low impedance input? How about a PC board mounted female F-connector which can be adapted by the users to their antenna lead wire. Any idea on when the MW receiver may hit the market? Pete KE9OA wrote: I am finishing up the MW receiver..............anyway, I have a high impedance antenna input in addition to the 50 ohm input. With this type of receiver is the high impedance input enough, or would interested parties rather have both inputs. The reason I am asking this is because my employer would like to have all jacks mounted to the main PC board. The only thing I have been able to find so far has been a right angle BNC connector for the 50 ohm input. Opinions welcomed! Pete ----== 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 =---- |
#5
|
|||
|
|||
Thanks! SE is an engineering firm that is primarily involved in the
automotive industry. Their biggest project has been work on the Automark election machine. I convinced them to market the MW receiver............up until that point, they didn't have an RF designer. I am not sure if they are going to get the active loopstick antenna done before I leave............they want to concentrate on the receiver itself. I do have a prototype of the antenna completed...............yesterday, I wound an antenna that has dual feedback windings for the regen circuit. The trick now is to get smooth control of the feedback. I tried a crude form of control using a pot for the feedback control that feeds a resistive splitter for the coils themselves. I am thinking about a single-ended input to differential output unity gain JFET buffer. I just need to come up with the design, but it shouldn't be to hard. For the control element itself, I can use the pot just to bias a JFET as the control element..........maximum voltage at the gate runs the JFET into the pinchoff region, which essentially turns it off..........at least, hopefully! Pete "dxAce" wrote in message ... Pete KE9OA wrote: I am thinking that it will be either Silicon Engines or most likely, Quadphase. This company has two divisions. Well, Silicon Engines does sound pretty neat. Pete "dxAce" wrote in message ... Pete KE9OA wrote: The receiver will definitely have a high impedance input, and for the 50 ohm input, I will have a pad on the main PC board that the SO-239 connector center terminal can be soldered to. I wasn't too crazy about that BNC approach either. Hopefully, the receiver should hit the market by the end of summer. I will be leaving the company at the end of April, so I will get everything done that I can. I should have an initial board layout done in the next two weeks. What 'brand' will the radio have on it? dxAce Michigan USA Pete "starman" wrote in message ... Hi Pete, If you have to choose only one antenna impedance input, the high one would probably be more useful, particularly for users of real long wires like beverage antennas. However those like myself with an inverted-L which uses a matching transformer and coax lead would appreciate the 50-ohm input. Is there a reason why you are considering only a BNC connector for the low impedance input? How about a PC board mounted female F-connector which can be adapted by the users to their antenna lead wire. Any idea on when the MW receiver may hit the market? Pete KE9OA wrote: I am finishing up the MW receiver..............anyway, I have a high impedance antenna input in addition to the 50 ohm input. With this type of receiver is the high impedance input enough, or would interested parties rather have both inputs. The reason I am asking this is because my employer would like to have all jacks mounted to the main PC board. The only thing I have been able to find so far has been a right angle BNC connector for the 50 ohm input. Opinions welcomed! Pete ----== 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 =---- |
#6
|
|||
|
|||
Silicon Engines? That sounds good for a name for a Radio.
cuhulin |
#7
|
|||
|
|||
Thanks!
Pete wrote in message ... Silicon Engines? That sounds good for a name for a Radio. cuhulin |
#8
|
|||
|
|||
From: "Pete KE9OA" Organization: AT&T Worldnet Newsgroups: rec.radio.shortwave Date: Wed, 06 Apr 2005 12:16:46 GMT Subject: High performance MW receiver I am thinking that it will be either Silicon Engines or most likely, Quadphase. This company has two divisions. Pete Doesn't Pamela Anderson have silicone engines? Sorry, the devil made me say it. Greg |
#9
|
|||
|
|||
It could be....................................I haven't checked on that
one! Pete "Greg" wrote in message ... From: "Pete KE9OA" Organization: AT&T Worldnet Newsgroups: rec.radio.shortwave Date: Wed, 06 Apr 2005 12:16:46 GMT Subject: High performance MW receiver I am thinking that it will be either Silicon Engines or most likely, Quadphase. This company has two divisions. Pete Doesn't Pamela Anderson have silicone engines? Sorry, the devil made me say it. Greg |
Reply |
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
More Receiver Reviews and Info including 'other' People's WebPages | Shortwave | |||
Announcing 'hifi-am', to discuss High Fidelity AM tuners and hobbyist transmitters | General | |||
a page of motorola 2way 2 way portable and mobile radio history | Policy | |||
stuff for all hams | General | |||
FS:Conar Twins - Conar 500 Receiver & Conar 400 Xmtr | Equipment |