[MRCA] R-390A Transceiver Comments

[B. Smith]

        I've received a lot of emails concerning the posting of my 
"Bench Notes" on the R-390A Transceiver using the receiver VFO/PTO to 
drive a small oscillator/mixer which in turn drives a transmitter of 
choice via the crystal socket.
         Some people wanted to know why? And the answer is because it 
was fun to use the receiver in a more active mode.
        My best and most constructive email was from Perry W8AU and it 
is quoted  below.

"Breck:  Why did you key the 6U8 xtal osc instead of the normal
method of keying the mixer, which allows a lot of wave shaping without
affecting the frequency?"

My answer was:   Probably because I have always keyed the oscillator in 
the past and did not give it enough thought.  :-)

Any way the suggestion from Perry was very much appreciated and I am 
sure keying the cathode of the mixer will produce better keying 
characteristics. A note was entered to that effect on the article.   
Thanks Perry.

Z
http://k4che.com/R390trans/R390Trans.htm