[Elecraft] K3 Notch control

[Mike Harris]

G'day,

For a bit of balance.  I've got a noise on 20M that has popped up 
recently.  Seems to be three tones with 340Hz and 212Hz spacing and about 
30dB out of the band noise.  The auto notch takes them all out after a few 
seconds thinking.

Not tracked the source yet and there seems to be some activity associated 
with the higher tone with the occasional fourth tone showing.  No doubt 
some new fangled domestic gadget.

Agree with a narrower manual notch.

Regards,

Mike VP8NO

----- Original Message ----- 
From: "Ignacy" <no9e at arrl.net>
To: <elecraft at mailman.qth.net>
Sent: Thursday, January 08, 2009 11:23 AM
Subject: Re: [Elecraft] K3 Notch control


|
| I agree that the notch feature in K3 needs serious work.
|
| 1. Notch in automatic mode is very slow and incomplete; does not work on
| slowly drifting carriers
| 2. In manual mode, the width is way too wide, some 250Hz.
| 3. It is outside the AGC loop
|
| A standard to follow would be one in IC-7000. Very fast an effective
| automatic notch. Variable width twin manual notch and; not sure of other
| Icoms since I do not have any.
|
| I believe that updating the notch should be quite easy compared to other
| issues.
|
| Ignacy
|