Don,
As an Apple/PC/Linux user (and former PC-only person), let me clarify a
bit ...
I switched to Apple because the hardware AND software are robust and not
given to blue screens or the likes. Linux offered robust software (same
Unix thinking that's in Apple OS), but few applications that I ne
Electronics grade isopropanol.
Guy's I am certified to NASA workmanship standards.
I do this for a living. No flux flies in space for a reason.
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Cleaning a board in a clean room does not ensure it is free of ionic
contamination.
Did you use an aqueous cleaner? If so then that is likely to be a problem
for you, as the pots and trimmer caps are probably not designed for an
aqueous cleaning process.
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Damon,
I will not comment on the MAC/PC situation, but the injection of the
Signalink USB may be suspect.
I am not a MAC user, so I cannot comment intelligently. I gave up on
Apple after the Apple II because of the proprietary nature of the
software - either you bought Apple software at an in
Problem solved.
It turned out to be a computer/software problem.
I had to use a PC (yuk) with a direct patch cord instead of my Mac G5 with
Signalink USB.
All is well again.
73, Damon
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That is really easy to do. I did and went through a couple weeks of
consternation before I got all the manual and postings about it in my
thick head. Thank you very much, I had successfully repressed all
memory of that episode :>)
73, Guy.
On Mon, Jul 25, 2011 at 1:39 PM, Alan D. Wilcox
wrote
Damon,
You say ...
"Once it comes back to OPT1 from FIL4 the audio tones are back at their
starting points and not were I set them. The BFO value did seem to save
however."
Did you have the freq-counter cable plugged into TP2 at the time? If you
overlook that, you won't be able to save your BFO
Too late...
I actually got bored at work one weekend and brought it in to clean it.
It was done using:
https://standards.nasa.gov/documents/viewdoc/3314920/3314920
In a class 100k clean room. :-)
The flux was RMA I think and Kester solder was used.
Hind sight is 20/20 as the flux would have been f
I guess you know that it is NOT recommended to try and remove the flux from
the boards after construction... if you don't get every bit of it off after
you dissolve it with whatever solvent you're using, you'll end up with a
severely contaminated board and future problems with it. If you have used
Damon,
Well, I certainly hope your flux cleaning efforts have not created
problems. It often does create leakage paths that can cause problems.
Solder flux by itself is non-conductive, and is best left alone - but
when combined with many flux cleaning ?solvents?, conductive paths can
be crea
TNX for the info.
I'll go over your method in detail tomorrow.
I have a hunch it may be due to the R1 SSB balancing pot.
Dummy me forgot to mention that I disassembled the k2 a few months ago to
clean all of the old flux off.
Perhaps the pot has some residue or wasn't setup right to begin with...
Damon,
The procedure in the manual is written for the "average" filter (of
which very few exist), so I highly recommend you use the procedure
documented on my website www.w3fpr.com dealing with K2 Dial Calibration
instead of the procedure in the manual. The entire procedure involves 3
steps -
About twice a year I like to run through the cal's on my K2.
Today, I was unable to store the BFO adjustments to eeprom and I noticed
that the USB audio sounds muddy.
Almost like the RF pot was turned down and the 2k audio filter active. The
RTTY (USB) mode also sounds like this.
LSB and CW are qui
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