Sorry you lost your beam YL. It must have
been a really traumatic experience.
I did buy a box of dual gate mosfets many
moons ago with the aim of transistorising my R206. I got as far as changing the
EF50 oscillator and eliminated oscillator pulling when using it with a nuvistor
converter on 2m but reverted to a valve when overcome with guilt but I admit to
leaving in place the tiny FM TDA chip for 2m as it was so small to be almost unnoticeable.
The goodish news is I just repaired a
broken earth lead that a visitor had tripped over. This connects to the unun
and I can now report the LW Polish station on 225KHz has shot up from -92dBm to
-75dBm and is now intelligible on the Andrus SDR. In fact I counted eight AM LW
broadcast stations. Radio 4 went from -47dBm to -32.5dBm and I had to insert 20dB
attenuation to eliminate spurii.
I met my very understanding wife G3SGL on
80m SSB back in the 60s.
Allan G3PIY
From:
main@SDR-Radio.groups.io [mailto:main@SDR-Radio.groups.io] On Behalf Of jdow Sent: 24 December 2021 10:53 To: main@SDR-Radio.groups.io Subject: Re: [SDR-Radio] NDB -
Airspy HF+ DIscovery versus Hermes Lite 2
Heh, me be injuneer. Alas not hairy chested for some reason. So MY
R390A has been tweaked a little. It goes down into that frequency range. I used
it a little. I moved back to 20 meters SSB talking with folks in Oz after
dinner here. (nice folks.) At that time I had a TH6DXX at 70'. Gone with the
divorce. And I still think I won.
I also built in a hang AGC system and rewired the demodulation processes so
that for SSB and CW I used a 7360 tube. Heaven forbid you'd think I'd
leave it unmodified. Hm, I also had a nice vernier knob on it. I forget the
exact ratio. I get something like 2 kHz to 5 kHz per revolution. It has an PLL
synchronous AM demodulator that I'm not fond of. It needs tweaking and was not
worth it. Its a superb SSB receiver. I used it in actual communications service
rather than SWL.
