Walter,
I want to start with a Converter for rx.
I have a home made modified NorCal 40A for the 40m band. Is it possible to
made
a converter for 136khz to 7,0 Mhz?
For example my IC 706 are "free", when I receive with PC the lf frequenz,
or
second example, the NorCal is free, when I receive with the IC 706 on 7,0
Mhz.
1) You might try www.sounds-good.co.uk/datong and get the circuit of the
Datong convertor as a starting point from which to produce a version for 7
MHz output.
2) Costas Krallis SV1XV ([email protected]) has a home built VLF converter of
similar design. It uses
a S042P with a 4 MHz crystal and a 4 MHz tuned circuit at the
output. The input goes through a lowpass filter, with a cut-off
frequency near 130 kHz.
3) RSGB LF Experimenter's Handbook is worth looking at.
73 de
John Rabson G3PAI
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