[Elecraft] P3 transmit monitor

Nate Bargmann n0nb at n0nb.us
Fri Dec 11 06:55:15 EST 2015


* On 2015 11 Dec 04:26 -0600, Barry N1EU wrote:
> Can you get a relative assessment of the degree of compression (speech
> processing) by viewing the ssb waveform in the P3 TX monitor?

The Christmas tree definitely gets more distorted on the display as the
compression is increased.  Just now as I adjust it up and down while
speaking into a dummy load the compression is quite apparent as the
control hits 13 and above with the MC-60 mic.  I typically leave COMP at
10 so it's not quite as noticeable on the display.

Sometimes on 75m I have RFI get into the MC-60 (I've done the mods which
helped but not totally eliminated it).  With the TX mon I see it right
away if I have the audio monitor turned down too low as I can hear a
motorboating sound when it happens.  It's quite apparent on the display.

Could I live without the TX monitor?  Yes.  Is it a nice station
accessory?  Yes.  Is it on a par with having a quality scope or spectrum
analyzer?  No.  Does a scope give continuous feedback on PEP forward
power and SWR?  No.  Do I plan to sell it?  No.

73, Nate N0NB

-- 

"The optimist proclaims that we live in the best of all
possible worlds.  The pessimist fears this is true."

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