Robert,
Since you do have sidetone, that means that your sidetone source is set
correctly. That also means that U6 pin 25 is available to be used for
the TXD signal.
You apparently have a problem with the RXD signal since you can cause
HRD to 'pause' when you issue some data by pressing DISPLAY (that
frequency output is what HRD is looking for). So I conclude that the K2
TXD is working, but the K2 RXD signal line is not.
The most likely problem is a failure of the MAX 1406 IC on the KIO2 or
KPA100. You might get some indication by checking the DC voltages, but
that is not a definite analysis. You can do DC level analysis if you
have access to a +12 volt and a -12 volt voltage source. I can give you
details of how to check it (let's do that off-reflector). An
alternative is to arbitrarily replace KPA100 U4 or KIO2 U1.
73,
Don W3FPR
Robert G. Strickland wrote:
Don...
If by "sidetone" you mean the CW sidetone, then yes, it's still there.
Otherwise, I'm not sure what you mean by "change the sidetone source;"
I'd appreciate a brief one on that "feature." If that's that, then I'm
a bit intimidated by your "real problem." That's what I'm hoping to
get some lead about and hoping that it doesn't mean a component
failure in the K2. Thanks much for replying.
...robert
Don Wilhelm wrote:
Robert,
Does your K2 still have sidetone? If not, change the sidetone source.
If you do have sidetone, you will have to look for what the real
problem is.
73,
Don W3FPR
Robert G. Strickland wrote:
Hello...
I have been using HamRadioDelux ver 4.0 SP4 for the better part of
two years without problems with K2 5957 and KP100 amp. Tonight, the
program couldn't get a frequency reading from the radio and wouldn't
connect. Yes, the radio is on, the PORT is enabled, and the computer
RS232 port is properly configured. I note the following details:
When HRD is trying to connect, and when I'm in PORT, if I press
DISPLAY [sending a frequency reading to the computer, a la the
manual] a "partial" HRD connect screen will come up with the correct
frequency, but in a moment "disconnects." When this happens, all the
"partial" display items on the computer screen from HRD disappear
leaving me with a blank HRD window.
Since this "just" happened after a long time of successful
operation, I'm suspicious. I rolled back WindowsXP to a previous
date with no success. I cycled the radio and computer numerous times
with no success. I disconnected and reconnected the cables. I've
been at computers for almost 30 years, so I don't think I'm
overlooking something obvious. I'm concerned that something in the
K2 might have failed. Any help much appreciated.
...robert
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