Re: [amsat-bb] Mods to 3733

[Bill Hurlock <bill@xxxxxxxxxxx>]

I retuned it by doing the mod from WC0Y:
 With no mods => 9.8 dB NF !!
> With stub removed => 4.1 dB NF (123 and 145 MHz IF)
> With stub retuned to image frequency => 1.8 dB NF
>
> I retuned the stub to notch the 2111 MHz image frequency by soldering a
> 0.5pf chip capacitor on the open end of the stub, shifting its frequency.
>
> Details can be found at http://communities.msn.com/wc0y
>
> 73,
> Ward - WC0Y
Hope this helps.

"Mark L. Hammond" wrote:

> At 11:20 AM 5/29/01 -0400, Bill Hurlock wrote:
> >After retuning the stub and loading the Xtal in my 3733 the signals on
> >this mornings pass were at least 2 S-units (10dbm) better than I have
> >seen on similiar passes. Sure was worth the effort.
>
> Can you define "retuning"?  Did you clip/remove it, add a cap across the
> end, shorten/lengthen it?
>
> Glad it worked, anyhow :)
>
> 73,
>
> Mark N8MH
>
> >--
> >Bill
> >WA2TQI
> >
> >
> >----
> >Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
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--
Bill
WA2TQI


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