Don, I adjusted the VCO range and ended up with 0.551 vdc at 5000 kHz on the
meter and I can now receive WWV at 5000 kHz. Apparently thats enough voltage
to work. What I did was adjust L30 so the voltage at 4000 kHz went from 6.52
vdc to 7.35 vdc. All voltages are between 2.715 vdc and 7.350 vdc on the
meter.
Harvey KN6VP
----- Original Message -----
From: "Don Wilhelm" <[EMAIL PROTECTED]>
To: "Harvey Howell" <[EMAIL PROTECTED]>;
<elecraft@mailman.qth.net>
Sent: Tuesday, May 30, 2006 7:23 AM
Subject: RE: [Elecraft] K60XV Problem
Harvey,
Re-check the VCO range (voltage on the left end of R30), and be certain
all
the ands fall within the proper range. It is normal for the VCO voltage
to
become so small below 5300 kHz that the tuning will not continue on down
to
5000 Hz. Also the response of the bandpass filter may fall off quite a
bit
at 5000 Hz which will reduce the ability to hear at that frequency.
I cannot speak to your 'buzz-saw' - you will have to be more specific.
73,
Don W3FPR
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Harvey Howell
Sent: Tuesday, May 30, 2006 9:53 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] K60XV Problem
Hello everyone. I installed a 60 meter board last night and it
seems to have a problem. When I entered 5000 kHz I had what
sounds like a loud oscillator sound on the audio. I turned on
another radio and had WWV loud and clear at 5000 kHz in that
radio. When I increase the frequency the oscillator sound goes
away (maybe just beyond my hearing) and I hear a very faint sw
station at 5070 kHz. Between 5070 kHz and 5300 kHz I can't hear
the buzz saw and I adjusted the trimmers for max power out. I'm
not getting any error messages on the display. So far I haven't
found any visible assembly errors. Has anyone had this problem
before? Any ideas what might be bad? On a previous K2 I built
with this option I heard WWV right away at 5000 kHz. Thanks very much.
Harvey KN6VP
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