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Posted: 5/12/2021 9:36:22 PM EDT
Markings on the board lead me to believe this is a Ramsey Electronics
QRP colorburst transmitter but I can't find any docs on it. "RE CB-1" and "Copyright 1977" along with A B C etc.. markings on the connection pads.   From the looks of it it uses a two transistor oscillator circuit, a driver and an MRF 102 as the output. I can probably figure it out just by looking at the way it's laid out, but wondering if anyone has docs on it. |
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Posted: 5/13/2021 6:56:07 AM EDT
[#1]
Sorry I can't help. It was a very sad day when Ramsey closed their kit division
 They still make the absolute best benchtop RF isolation boxes, though. |
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Posted: 5/13/2021 1:15:56 PM EDT
[#2]
Yup, I have a few Ramsey kits around here somewhere. Sad to see them go along with Heathkit.
 I'll just puzzle it out. Shouldn't be too hard as there is only 4 or 5 connections to make. Power, ground and output take up three. Other must be for a key. |
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Posted: 5/13/2021 10:20:30 PM EDT
[#3]
There is occasionally some QRPp operation going on on 3.579 Mhz. Make an output circuit for it and put it on the air.
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Posted: 5/14/2021 1:54:09 PM EDT
[#4]
Try a Cricket Kit Cricket 80A - Minimalist 80M CW Transceiver On 80M the best performance is in the winter when the QRN is lower.
73/ 72, Rob |
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