So I acquired a AMBC Transmitter, not a monster by any means, but not quite a PW either...
A J.R. Cunningham CM 30-50 Transmitter along with the LPB ATU-100SF Antenna Tuner
A friend of mine is in the AM radio business and he had it stuffed in storage for any number of years. He had removed it from a Transmitter site in when they upgraded. It was being used as a backup Xmtr and currently has a 1050 kHz Xtal installed
The Tube line up is:
12BY7, 6V6, 6DQ5 (broken in socket)
I found a 6DQ5 tube to replace the broken one...
Interesting note, it has a IRF820/TIP100 Modulator.
Photos:
http://riley-music.com/BowsStuff/CM3050/01Front.JPG
http://riley-music.com/BowsStuff/CM3050/04Rear.JPG
http://riley-music.com/BowsStuff/CM3050/07Top.JPG
http://riley-music.com/BowsStuff/CM3050/10IDTag.JPG
http://riley-music.com/BowsStuff/CM3050/18GutShot.JPG
http://riley-music.com/BowsStuff/CM3050/15AntTnr.JPG
I searched for "J.R.Cunningham Transmitters" and found a site, which was recently closed...
Anyone else ever heard of them? The original build, Mr. Cunningham, passed away 2 years ago... and no one seems to have Tech info on these things...
If it is 50 Watts output (like the website stated), I am interested in trying to put on 160 or 75 meters...
I have a FCC-1/FCC-2 NorCap QRP DDS that I should be able to use instead of crystals.
Any suggestion, hints, tips, or suggestions on how to move it up to the Ham Bands (I am a General Class)?
Thanks
A J.R. Cunningham CM 30-50 Transmitter along with the LPB ATU-100SF Antenna Tuner
A friend of mine is in the AM radio business and he had it stuffed in storage for any number of years. He had removed it from a Transmitter site in when they upgraded. It was being used as a backup Xmtr and currently has a 1050 kHz Xtal installed
The Tube line up is:
12BY7, 6V6, 6DQ5 (broken in socket)
I found a 6DQ5 tube to replace the broken one...
Interesting note, it has a IRF820/TIP100 Modulator.
Photos:
http://riley-music.com/BowsStuff/CM3050/01Front.JPG
http://riley-music.com/BowsStuff/CM3050/04Rear.JPG
http://riley-music.com/BowsStuff/CM3050/07Top.JPG
http://riley-music.com/BowsStuff/CM3050/10IDTag.JPG
http://riley-music.com/BowsStuff/CM3050/18GutShot.JPG
http://riley-music.com/BowsStuff/CM3050/15AntTnr.JPG
I searched for "J.R.Cunningham Transmitters" and found a site, which was recently closed...
Anyone else ever heard of them? The original build, Mr. Cunningham, passed away 2 years ago... and no one seems to have Tech info on these things...
If it is 50 Watts output (like the website stated), I am interested in trying to put on 160 or 75 meters...
I have a FCC-1/FCC-2 NorCap QRP DDS that I should be able to use instead of crystals.
Any suggestion, hints, tips, or suggestions on how to move it up to the Ham Bands (I am a General Class)?
Thanks
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