[Elecraft] Re: K3 Beta firmware rev. 2.57

[Joe Subich, W4TV]

> Dave just pointed out that his TXG VCE menu entry (voice gain 
> relative to CW) was set to -1.5 dB.

I just spent the time to check my other K3 ... its AM power is 
also in the 22-25 watt range across HF (20 Watts on 6M).  I have 
TXG VCE set to +1 dB on s/n 622 (factory assembled) and +0.5 dB 
on s/n 1450 (kit).  TXG VCE is set to make the PEP output on SSB 
as measured on an LP-100 the same as the CW power measured on 
the same meter.  

If I reset TXG VCE to 0.0 dB, the AM carrier power drops 2 
to 3 watts depending on the radio and the SSB PEP is 10 to 15 
watts low.  

> This menu entry should probably apply only 
> to SSB modes. I'll review this with our DSP engineer.

I don't know ... it seems to work properly here.  If you elect 
to not make it global, it may be necessary to provide separate 
TXG settings for voice (SSB), AM and AFSK A/DATA A (DTA) ... or 
at least SSB/Data and AM.

73, 

   ... Joe, W4TV 
  


> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net 
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of wayne burdick
> Sent: Saturday, October 25, 2008 12:21 PM
> To: microham at microham-usa.com
> Cc: elecraft at mailman.qth.net; 'Dave G4AON'
> Subject: [Elecraft] Re: K3 Beta firmware rev. 2.57
> 
> 
> Dave just pointed out that his TXG VCE menu entry (voice gain 
> relative 
> to CW) was set to -1.5 dB. This menu entry should probably apply only 
> to SSB modes. I'll review this with our DSP engineer.
> 
> 73,
> Wayne
> N6KR
> 
> Joe Subich, W4TV wrote:
> 
> > It measures very close here as well.
> 
> >>> Wayne, the AM power level in this version only seems to produce a 
> >>> carrier of 10 Watts when the requested power is "100W".
> 
> 
> ---
> 
> http://www.elecraft.com
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