I have a dual-range 432Mhz to 28Mhz receive converter. It's dual range,
covering 432-434 and 435-437Mhz, translating
down to 28Mhz. They were popular with UHF EME types to use with
high-quality HF rigs, but VHF and UHF
multi-mode rigs have now gotten quite good, so receive converters
aren't quite so popular as in the 1980s when
I used this for high-speed packet.
The unit is made by Microwave Modules (are they still in business?), and
it uses a crystal-controlled LO. I don't
know what the conversion-gain is, but perhaps 30-40dB? [There's about
7 transistors on the circuit board]. The
noise figure will, of course, be terrible, so you'd need to put a
good-quality LNA in front of it for any weak-signal
work. It worked two years ago when I tested it. You'll need to find
a power connector for it, or re-do
the power entry.
Anyway, if anyone is interested, let me know. I can package it up, and
send it on the slow boat...
-Marcus
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