[Elecraft] Transmit Audio

[Gary VK4FD]

Alan,

When it does become a usable function of the P3 I am sure you will see a spike in sales volume.

Till then I can get along without it.


Gary


VK4FD - Motorhome Mobile
Elecraft Equipment
K3 #679, KPA-500 #018
Living the dream!!!

  ----- Original Message ----- 
  From: Alan Bloom 
  To: ab2tc 
  Cc: elecraft at mailman.qth.net 
  Sent: Thursday, December 08, 2011 4:45 AM
  Subject: Re: [Elecraft] Transmit Audio


  It's useful for checking your transmit equalization with a specific
  voice and microphone.  At N1AL, I discovered that I had way too much
  bass so I adjusted the K3's TX equalizer to make it flatter.

  As Joe says, it does not include the effects of amplifier distortion.
  And as Knut says, the signal level depends on random leakage through the
  mixer and PIN diodes, so it varies with band, drive level settings, and
  sample-to-sample variation of the particular K3.  There's no guarantee
  that there will be enough signal available to be useful.  That's the
  main reason I resist making it an "official" feature.

  Alan N1AL


  On Wed, 2011-12-07 at 09:36 -0800, ab2tc wrote:
  > It's also a result of internal leakage paths so I am not sure that it can
  > even be trusted to be representative of the signal delivered to the output
  > stages of the transmitter.
  > 
  > AB2TC - Knut
  > 
  > 
  > Joe Subich, W4TV-4 wrote
  > > 
  > > If the RS-232 cable is not installed between the P3 and K3 the P3
  > > will not "mute" during transmit and one can see the transmit IF.
  > > 
  > > Note - this is *not* a transmit RF display as it does not show the
  > > effects of the final mixer, driver and/or final so any IMD/clipping
  > > generated in the final amplifier is not reflected in the display.
  > > 
  > > 73,
  > > 
  > >     ... Joe, W4TV
  > > 
  > > <snip>
  > > 
  > 
  > 
  > --
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