[Elecraft] K3 - receive audio when using the ANF

[goldtr8@charter.net]

This has been mentioned in the past.   
My k3 purchased in November 2010 did not have this problem.    It did show up later after SW updates.    Search the archives and you may find a solution.

I thought this was on the to be looked at list by Elecraft.


73
KD8NNU Don
Sent from my HTC on the Now Network from Sprint!

----- Reply message -----
From: "Bill" <bill at w2blc.net>
Date: Sat, Oct 13, 2012 11:24 am
Subject: [Elecraft] K3 - receive audio when using the ANF
To: <elecraft at mailman.qth.net>

I use my K3 mostly for SSB rag chew, for that reason I use the ANF 
(automatic notch filter) often. The ANF does eliminate interfering 
hetrodynes and carriers very well, however, it introduces a garbling 
effect to the SSB received audio. It is tolerable, but surely causes a 
noticeable and disappointing receive audio quality reduction.

I have other rigs with ANF and even a couple of old ANF boxes - all of 
which do a good job eliminating the interfering signals - generally as 
well as the K3's ANF. However, only the K3 introduces artifacts or 
garbling to the receive audio.

I have been told by Elecraft, "They (other manufacturers) are no doubt 
using a different algorithm. Lyle has said he will look into this when 
he gets a chance."

Not being able to leave the ANF engaged all of the time, as I do with 
other rigs, has reduced the pleasure of using my K3. In the interim of 
Lyle looking into this, has anyone found settings that workaround this 
problem?

Thanks,

Bill W2BLC



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IN GOD I TRUST (but, NOT a single politician)
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