[Elecraft] New KSYN3AUPG Installation

[Mike Cox]

I installed the new K3 synthesizer boards last night into s/n 398 (with 
sub Rx). The installation was very easy, requiring only the removal of 
the top cover and the old synthesizer boards. I didn't even remove the 
rig from the operating table, electing to sit my anti-static mat in 
front of the radio and wearing the grounding strap. The radio remained 
connected with +12 power turned off (it would have taken me more time to 
rewire the radio into the station than was required for the actual board 
swap). Total installation time was about a half hour.

The radio powered up without incident and is performing as it should. 
Config: VCO MD is still present but only displays "--" as it is no 
longer needed to align the synthesizers.

As one would expect, there is initially no obvious difference in the 
before/after modification as far as the function of the radio. It 
"sounds" the same as before. Since I only have one K3, I can't do a 
quick-change A/B comparison of before and after. I'm not set up to 
perform the types of measurements required to accurately measure the 
changes regarding phase noise. I'll just have to take the word of others 
that the radio is now able to perform at a better level than before. I 
may be able to tell an improvement in CW keying timing at 35+ wpm but it 
may be my imagination. It does sound good! Here's where performing a 
before/after test would have real meaning to me.

But once again, I'm able to update my old K3 with the latest changes and 
make it function as a new radio. I didn't have to buy a whole new radio! 
That's pretty neat! I've saved so much money over the past years (not 
having to buy a new radio) that I probably should go out and buy a 
second K3. Maybe if Wayne would give me a hat...

I'm going to be operating for a while in the ARRL CW DX contest this 
weekend so I'll give it a practical test. From my perspective there's 
probably no compelling reason to make the synthesizer swap but in 
theory, it should be an even quieter transmitter with regard to phase 
noise and the cw keying may be a bit cleaner with reduced lock-up time 
on the synthesizers. It's an easy board swap!

73,
Mike, AB9V