[Elecraft] ARRL Field Day

[Bill Frantz]

I also think phase noise is the likely culprit. A look at the 
field day writeup in their club newsletter shows no K3s or K2s 
in their photos. The only rig mentioned specifically was an Icom 
IC-756PRO3 for their GOTA station and the photographs show a 3 
element beam. In response to an email they said they were 
running 100 watts on all of their transmitters. I think 100 
watts with a standard transmitter on PSK might be in the worst 
part of the performance envelope.

My guess was that their signal might have been as much as 8 dB 
stronger than that of our nearby CW station. They were about 1/2 
mile from us and our CW and digital antennas were about 600' 
apart. I calculate 13dB for the power difference, minus 12dB for 
the inverse square law, and a wild guess of an additional 7dB 
for the antenna patterns. They were a lot closer in frequency 
than our CW operation (1 KHz vs 20-60 KHz) which doesn't help.

Cheers - Bill, AE6JV

On 6/27/13 at 10:16 PM, eric at elecraft.com (Eric Swartz  WA6HHQ - 
Elecraft) wrote:

>Its much more likely they had wide band TX phase noise that was 
>causing your problems. (Unless they were running K3s :-) There 
>is not much on the receive side that you can do to eliminate that.

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