Yes, Sverre, you are right.
3rd overtone gives 33MHz /4= 8,250 which is a bit high, but
with 96k soundcard you have well room there.
This has been made working in a FT1000, see SoftRock reflector.
And works remarkably well, very sensitive, indeed.
I found a surplus 32,768 which is a bit closer and higher (8192).
The oscillator shoud not be in K3 roofing filters passband or near it s
filters.
Take care, if you are going to use AM or FM.
Advantage with Tony is: his Xtal works surely in that schema
and is small enough, maybe available inside kit s price. And he has them.
Ha det!
Benny
______________________
Sverre Holm kirjoitti:
Benny Aumala wrote:
"v6 SoftRock lite" kit ...
If you will use it with K3, ask Tony to send 11 MHz Xtal with the kit.
Benny,
I don't quite understand the X-tal frequency of 11 MHz. My impression is
that the Softrock needs a crystal which is 4 x the center frequency,
i.e. in
the order of 4 x 8.215 MHz or 32.86 MHz for the K3. What am I missing
here?
73
Sverre
LA3ZA
Unofficial Guide to K2 Modifications
http://www.qslnet.de/member/la3za/K2/mod.html
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