Elecraft

K3: audio drops at bandwidth .10 kHz

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KM5Q

K3: audio drops at bandwidth .10 kHz

Spotted perfectly on a CW signal, I narrow the BW from .15 to .10. I
hear a click and the audio suddenly drops to about 1/3. S-meter
reading stays the same.

It didn't do this when the radio was new, but it has been doing it at
least since FW 2.78. I now have 2.82. My narrowest roofing filter is .
5. Anybody know what this is about?

Windy KM5Q
K3 #764
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Joe Subich, W4TV-4

Re: K3: audio drops at bandwidth .10 kHz

Are you using the RX EQ as a peaking filter? EQ is bypassed
when BW is less than 150 Hz.

> -----Original Message-----
> From: [hidden email]
> [mailto:[hidden email]] On Behalf Of KM5Q
> Sent: Saturday, February 14, 2009 5:30 PM
> To: [hidden email]
> Subject: [Elecraft] K3: audio drops at bandwidth .10 kHz
>
>
> Spotted perfectly on a CW signal, I narrow the BW from .15 to .10. I
> hear a click and the audio suddenly drops to about 1/3. S-meter
> reading stays the same.
>
> It didn't do this when the radio was new, but it has been
> doing it at
> least since FW 2.78. I now have 2.82. My narrowest roofing
> filter is .
> 5. Anybody know what this is about?
>
> Windy KM5Q
> K3 #764 ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html

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KM5Q

Re: K3: audio drops at bandwidth .10 kHz

In reply to this post by KM5Q

YES! Thanks for all the correct responses. This link from Stewart sums it up perfectly:

http://n2.nabble.com/K3-Narrow-CW-Filter-tp2258338p2258751.html

I had the RX EQ around my CW frequency set to +12. So, I reduced all settings in a linear manner, by 12. After changing Menu AF Gain range from LOW to HI, it sounds the same and the problem is solved.

73 de Windy