[Milsurplus] ARR-41 in Transceive

[Gordon Smith]

Hi B.Smith,
After looking over your R-390A Transceiver 
project documentation and considering the 
information you provided below, I can think of 
two possible ways of doing the project. One of 
them has advantages over the other. Taking your 
R-390A information and looking on the web, it 
seems that the minimum VFO to amplifier drive 
voltage is going to be around 5 V peak to peak 
(Assuming a tube based amplifier and gotten from 
here: 
https://www.frostburg.edu/personal/latta/ee/vfo/vfo.html 
). So you will need need either 1) some amplifier 
circuit that ties into and does not load down the 
very low voltage ARR-41 "VFO" and provides the 
requisite drive to an external Amplifier or 2) 
(my preferred option) rebuild/modify the ARR-41 
"VFO" so that if provides you the desired drive 
voltage from the beginning, then voltage divide 
down the drive voltage for the receiver 
circuitry. I think there are multiple advantages 
to #2. It provides you with a solid signal for 
both transmitter and receiver circuits. You are 
also then basically replicating a lot of the 
steps you took with the R-390A project, which you 
are familiar with and have experience in.

Thoughts/Comments?

73, Gordon KJ6IKT

P.S. a fellow "Smith" also ;)

At 06:01 PM 5/17/2022, B. Smith wrote:
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>I've been playing with my ARR-41Â  receiver 
>trying to figure out how to use it in a 
>"Transceive" mode similar to what I did with the 
>R-390A. (see link below) The plan would be to 
>use the the main  ARR-41 "VFO" that covers 2.5 
>to 3.5 Mhz. I would use this signal as a drive 
>signal for the transmitter converter.    How 
>ever this signal (2.5 to 3.5) is very weak 
>around  .1 ( point one) Volt PP and any 
>additional load on this signal degrades my input 
>into the 1st IF and reduces receiver sensitivity.
>Â I need a couple of volts PP and would like to 
>stick with a fairly simple  converter using a 
>doubler, a osc/ mixer, and a 6CL6 stage  - - - 
>then use the output to drive another transmitter 
>oscillator stage  or operate QRP with a couple of watts.
>Any suggestons?
>Â
><http://k4che.com/R390trans/R390Trans.htm>http://k4che.com/R390trans/R390Trans.htm
>k4che
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