[Moon] ALL 9cm orperators

[Zdenek SAMEK-OK1DFC]

RX from 3390 easy with SDR or IC9100, RX filter already tuned like this


TX 3390 possible with IC9100 but not allowed, 3400 up only





-- 
Zdenek - OK1DFC
www.ok1dfc.com
QRV EME 144 MHz - 10 GHz
WAC 432 - 1296 - 2320 MHz
WAZ #9 - WAS 432 #29
DXCC 432 - 1296 MHz

---------- Původní e-mail ----------
Od: G3WDG via Moon <moon at moonbounce.info>
Komu: Charlie & Geraldine Kahwagi <ibnkarim at bigpond.net.au>
Datum: 9. 7. 2018 13:33:28
Předmět: Re: [Moon] ALL 9cm orperators 
"Hi Charlie

Re 1: I can only work on 3400.

Re 2: imho, not possible.

73

Charlie

> Hello, A couple of questions to all 9cm operators:
>
>
>
> 1. Are any / many of you are able to adjust LO frequencies to be able
> to work VK3NX on 3392 MHz direct Tx and Rx ?
>
>
>
> 2. What filter designs are possible to pass 3398.100 MHz (with minimal
> loss) but attenuate 3400MHz and above by 30-40 dB or more ?
>
>
>
>
>
> A little while ago I had to migrate all 9cm operation to 3398 MHz and
> have
> worked many of you there direct or split freq with 3400 MHz
>
> I now have commercial spread spectrum transmitters on 3400 MHz and above
> nearby and I can no longer operate on 3398.100 due to a BIG increase in
> my noise floor on 3398. I either have to find a filter solution, (
> ALL SUGGESTIONS WELCOME PLEASE) or migrate down a few more MHz to say
> 3392.100 MHz where I have checked my background noise is "normal".
>
>
>
> ( I recently have had the same problem on 13cm due to heavy commercial
> use
> on 2304MHz and above and an interdigital filter helped... I am able
> to
> still work on 13cm but ONLY 2300.100 +/- ( not 2301.950))
>
>
>
> 73
>
> Charlie
>
> VK3NX
>
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> Moon at moonbounce.info
> /mailman/listinfo/moon
>
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