K2/100 question

[K9RT]

Recently purchased a nice used K2/100. All seems well but when I use the
narrow filters on ssb I have to retune up about 700hz on lsb. as well as usb . The
three narrow filters are all centered on a frequency 700 hz higher.
This is my second K@2 and must confess I don't recall the first doing this,
but rarely if ever used it on ssb.
So are the filters aligned correctly, or perhaps set this way for psk or
another mode?
And is it possible to bring them into alignment by some simple adjustments?
Don't want to throw anything else out of alignment without some advice.
Thanks for any assistance..
Dick K9RT
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[Don Wilhelm-3]

Dick,

It does sound like your filters (actually BFO settings) may need some TLC
and alignment.  This is one of the problems with buying a used K2, one never
knows if the settings used by the previous owner were 'standard' or were
even correct in the first place.

The good news is that it can easily be corrected.  You will need the counter
probe, so if you did not get one with your used K2, you will have to order
the probe kit from Elecraft.

I highly recommend using Spectrogram when aligning the filters - it gives
you a visual picture of the adjustment results.  I have a complete K2 dial
calibration and filter alignment procedure on my website
http://w3fpr.qrpradio.com and the Elecraft website has several items on the
Builder's Resource page that will help you set up Spectrogram.  The last
freeware version of Spectrogram is available for download at Tom Hammond's
website www.n0ss.net and is more than adequate for this task.

73,
Don W3FPR

> -----Original Message-----
>
> Recently purchased a nice used K2/100. All seems well but when I use the
> narrow filters on ssb I have to retune up about 700hz on lsb. as
> well as usb . The
> three narrow filters are all centered on a frequency 700 hz higher.
> This is my second K@2 and must confess I don't recall the first
> doing this,
> but rarely if ever used it on ssb.
> So are the filters aligned correctly, or perhaps set this way for psk or
> another mode?
> And is it possible to bring them into alignment by some simple
> adjustments?
> Don't want to throw anything else out of alignment without some advice.
> Thanks for any assistance..
> Dick K9RT
>

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[Joe-aa4nn]

I suppose when I had the Ngen connected to the QRP K2
and accidentally pushed the MSG button causing some CW
to be sent means I fried the Ngen circuit.  no?
de Joe, aa4nn
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[Don Wilhelm-3]

Joe,

You likely fried the MMIC chip.  Get another MMIC and install it, the Ngen
will be good as new.

I have done that soeveral times, so don't feel like the 'lone ranger'.  Slap
your wrists a couple times and vow not to do that again! <G>  But I keep a
couple MMICs on hand just in case.

73,
Don W3FPR

> -----Original Message-----
>
> I suppose when I had the Ngen connected to the QRP K2
> and accidentally pushed the MSG button causing some CW
> to be sent means I fried the Ngen circuit.  no?
> de Joe, aa4nn
>
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