[OZAPRS] HF Beacons Heard.

[Ron Perry]

Hi Chris,

On Tue, 2004-03-30 at 22:05, Chris Hill wrote:
> Hi Ron,
> 
> [SNIP]
> >It begs the question to be asked...How accurate are our dials/displays?
> >
> >And how should we check?
> 
> It is reasonable to expect that all digitally synthesised amateur
> transceivers are referenced to a TCXO with at least 5ppm or better
> stability.  At 10MHz, your actual frequency should be within 50Hz of the
> display frequency.
> 
> As a quick check, have a listen to WWV on 15MHz.  First listen on USB...
> then switch to LSB.  Ideally, you shouldn't be able to tell the
difference
> between LSB or USB.
> 

Hmmm..a little difficult for a partially hearing impaired old codger
like me. But I see what you mean.  Something for me to look at, or
listen to, tomorrow. :-)
Oh, one of the reasons I got into packet about 15 years ago, was that I
didn't have to listen to it. :-)


> (If WWV sounds different on USB versus LSB, it _might_ be the TCXO
reference
> needs to be tweaked.  Or, it might be something else, depending on the
> specifics of your rig.  You'll have to consult the service manual for
that
> one).
> 

Service manual, don't have one. :-)  I'll leave that for the local
dealer methinks.

Thanks

Regards,
Ron


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