On Jul 12, 2010, at 7/1210:25 AM, Wes Stewart wrote:
> I haven't gotten very far with this because 1) the IMD is apparently
> temperature sensitive and drifts, becoming a moving target
For what its worth, when I ran close-spaced IMD measurements (*very*
closed spaced -- the BPSK31 idle t
> Can anyone else confirm or deny that their PA talks back to them?
Does not do it here. I've made the same tests using the SDR-IQ
with the directional coupler from my LP-100 and additional
attenuation for the input to the SDR-IQ. IMD was stable as long
as the power level was stable (Keep ALC
Thanks Joe and Chen,
I'm using a series of power and stepped attenuators to couple the K3 to the
SDR-IQ. The input attenuator is underrated a bit so I've been necessarily
limiting transmit time at the higher levels. When time permits, I'll drag in a
directional couple from storage and use it.
On Jul 14, 2010, at 10:31 AM, Wes Stewart wrote:
> Chen does your K3 PA talk back?
Nothing that I can hear over my tinnitus, Wes.
73
Chen, W7AY
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Hi Wes,
Meant to reply earlier but got distracted.
Yes, my PA definitely "sings" with the 2-tone generator on. Like
yours it's somewhat dependent on power level. Unlike yours, I can
hear mine down to about 2.0w (albeit at a reduced level when the PA
drops out.)
73
--
Joe KB8AP
On Jul 12
Hi Joe,
One more question, do you have the K3STFNR installed?
Wes
--- On Wed, 7/14/10, Joe Planisky wrote:
Hi Wes,
Meant to reply earlier but got distracted.
Yes, my PA definitely "sings" with the 2-tone generator on. Like yours it's
somewhat dependent on power level. Unlike yours, I can
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