Folks,
I must confess a 'senior moment' - the T7 turns ratio below is not correct,
the correct ratio is 20:5 turns.
73,
Don W3FPR
-----Original Message-----
From: Don Wilhelm [mailto:
[hidden email]]
Sent: Tuesday, January 09, 2007 7:57 PM
To: 'Bernard Gaffney, N8PVZ/QRP';
[hidden email]
Subject: RE: [Elecraft] Re: Elecraft: K2 Audio Problem
Bernie,
In the past, I have complained about 'weak' audio on my K2 SN 00020, but I
have since modified T7 to the newer turns ratio of 20:7, and I no longer
complain - yes, there is not as much raw audio power as found in some other
transceivers, but the K2 will 'blow your ears off' if the gain is turned up
too far.
T7 is one thing you may want to check - the 20 turn (red) winding should be
connected toward the IF amplifier chip - if it is reversed, the audio will
be quite 'anemic'.
If you find T7 connected correctly, about the only other thing that can
cause weak audio is improperly aligned IF filters. The use of Spectrogram
is highly recommended. If you have questions about how to set the filters,
check the last part of the K2 Dial Calibration information on my website
http://w3fpr.qrpradio.com or look at the information on the Elecraft
website. The last freeware version of Spectrogram is available on Tom
Hammond's website www.n0ss.net , and is more than adequate for the task.
73,
Don W3FPR
> -----Original Message-----
>
> Come on Bernie I told ya road trip time.....take a tour around
> the bottom of
> Lake Michigan and come up this side and we'll have that puppy
> working before
> the first beer is gone.
>
>
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