I plan on 74.549 as Hartmut is setup in that region of the band for tonite. He likes this region of the band and have heard the same from F6CNI [hope I have that correct]. But on the Markus grabber I saw allot of various "junk sigs" on the whole hz freqs. Last night I went down .1 Hz and Hartmut noticed it but did not comment. I was thinking of going up .2 hz and be right in the clear of that junk [74.5492]. I see the same happening on .548-for tonight Dex you could go with .2-.3 up or down. Or if you have other listeners try 73.625 and see how things shake out. Will give us all an idea of what is best for the QRSS window. Bob
> Date: Mon, 30 Sep 2013 18:30:52 -0400
> From:
[email protected]> To:
[email protected]> CC:
[email protected]> Subject: Re: LF: 74.550kHz Sep 29/30
>
> Markus Vester wrote:
> > Attached is a spectrogram which was taken tonight on the resonant
> > antenna. Between statics, you can still see the fourth sideband lobe
> > which is centered near 74.6 kHz. The spectral gaps are on
> > 74916.666 Hz,
> > 74270.833 Hz,
> > 73625.000 Hz,
> > with small and sharp central lines, presumably caused by slight
> > inbalances or nonlinearities in the transmitter.
> >
> > By these criteria, if you have the choice I would recommend to operate
> > somewhere near these gaps, but not exactly in their middle, and also
> > preferably not exactly on integer Hz frequencies ;-)
> >
> Markus,
>
> If Bob is going to be on tonight I'll let him make the frequency call.
> If so I'll snuggle up with him since his signal will provide a locater
> for my much weaker signal. If Bob doesn't show up you make the call. I
> prefer 73625 +/- a smidgen.
>
> Dex
>
