K3 Noise Blanker Question

[Mike Warden]

I have Elecraft K3 Serial # 924 (kit) and, after a very straightforward
assemble, test, and calibration, everything appears to be working perfectly,
except for one small concern that may or may not be a real issue.  Any
advice would be appreciated.

 

When I am listening to any SSB signal (or AM signal) and I engage the Noise
Blanker (NB) function, both the S-Meter reading and the audio drop way down.
For example, if I am listening to an SSB signal at S-9 and have the audio
set at a moderate level, engaging the NB IF function, at any level from NAR1
through WID7 results in an S-Meter drop to S1 or lower and an audio drop to
an almost inaudible level.

 

I understand that the NB-IF function may result in some loss of the signal,
but the loss I'm experiencing seems excessive to me.

 

I have tried the NB function with the ACG set for Slow, Fast, and Off, with
the same results.

 

Is this normal, or do I have something set incorrectly?  Any advice would be
appreciated.

 

'73

-mike-

W2PY

 

 

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[Vic K2VCO]

Mike Warden wrote:

> When I am listening to any SSB signal (or AM signal) and I engage the Noise
> Blanker (NB) function, both the S-Meter reading and the audio drop way down.
> For example, if I am listening to an SSB signal at S-9 and have the audio
> set at a moderate level, engaging the NB IF function, at any level from NAR1
> through WID7 results in an S-Meter drop to S1 or lower and an audio drop to
> an almost inaudible level.

This is not normal. Either the IF NB board is not plugged in properly or
there is some kind of problem with it. There should be no signal loss
when it's activated.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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