[Elecraft] K3: S meter

[Joe Subich, W4TV]

> The only shortcoming I've found is that SpectraVue needs to 
> poll the K3's mode offset data so that changing modes does 
> not require an offset change in SpectraVue.  Not sure if 
> that's handled automatically when using LP-PAN and PowerSDR.

Yes, LP-Pan/PowerSDR handle the mode offset automatically. 
You could probably use Larry's LP-Bridge to allow Spectraview 
to work with other software. 

73, 

   ... Joe, W4TV 
    




> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net 
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Paul 
> Christensen
> Sent: Thursday, November 13, 2008 4:40 PM
> To: Jan Erik Holm
> Cc: Elecraft Reflector
> Subject: Re: [Elecraft] K3: S meter
> 
> 
> > "If everybody is using K3´s and the difference is smaller
> then 5 dB you can´t see it on the S-meter and since the
> AGC is so darn good you can´t hear it either."
> 
> Reading the Rx voltage scale is one option, but IMHO, a 
> better solution for 
> signal comparison purposes is to use the K3 with either 
> LP-PAN or SDR-IQ.
> 
> Based on feedback from other users here, I have been testing 
> the K3 with 
> SDR-IQ and SpectraVue software, and the results have been 
> most impressive. 
> I performed the N8LP I.F. buffer mod on the K3 and have its 
> I.F. ported to 
> the SDR-IQ.  Up to 192 kHz of display resolution is possible 
> and no external 
> sound card is required.  So far, anything I can hear on the 
> K3 will display 
> on the screen.  CPU utilization is low and both the software 
> and interface 
> have been rock-solid.  Performance is independent of the PC 
> and its sound 
> card.  This makes it convenient to use the K3 with my desktop 
> PC or laptop 
> when I want to go portable.
> 
> When observing signal strength on the display, there's ample 
> resolution for 
> signal comparisons.  SDR-IQ is powered from the PC's USB 
> port, so only two 
> connections are made (I.F. and USB).  SpectraVue supports the 
> K3 and using 
> the "point 'n click" feature has been great.  Click on the 
> display and the 
> K3 instantly moves to that frequency.  The only shortcoming 
> I've found is 
> that SpectraVue needs to poll the K3's mode offset data so 
> that changing 
> modes does not require an offset change in SpectraVue.  Not 
> sure if that's 
> handled automatically when using LP-PAN and PowerSDR.
> 
> Paul  W9AC
> 
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