"Uwe Wensauer" <[email protected]> schrieb:
Hi David, In order
to improve the sensitivity for regular Amateur (Ja- Rig) a Pre- Amp is
needed.I was looking at Your homepage and found such a Pre- Amplifier. Could
You tell me, whats the Value for L1 and L2 is. I´m noch lucky in on order to
pin down the TOKO Coil 707VXA016YKS ( is that a zero or a null ?)May be I can
find similar Coils if I would know more parameters Many thanks Uwe,
DK1KQ
Uwe.
As supplied by Toko, the variable Inductor measures 235uH. They
require a small adjustment of the ferrite core to bring them onto 136kHz. You
can probably calculate the final value from the resonating capacitor values used
in the pre-amp.
Regards
David
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