Re: [Elecraft] RS-232 communication failure KPA100

2008-02-19 Thread David Pratt

In a recent message, Per Enocson <[EMAIL PROTECTED]> wrote ...

My PC to KPA100 communication suddenly failed. Checked the cabling and did


It looks very much as though the problem is with your computer, Per. 
Your message to the Reflector was send no fewer than five times.


Hope you manage to solve the problem.

73
--
David G4DMP
Leeds, England, UK
--


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[Elecraft] RS-232 communication failure KPA100

2008-02-19 Thread Per Enocson

My PC to KPA100 communication suddenly failed. Checked the cabling and did
some initial tracing from J1 to U4. Seems ok incl. RFC:s. I found deviating
voltages on U4 pins:
2   -5,5
3   -10,7
4,5,6   -5,5
7,8 -10,7
with remaining U4 pin readings ok. Then tried to find the 16293 kHz signal
on my SW receiver but couldn´t hear it. I however find  -75 V at the end of
the diode chain.so is the HV xtal oscillator at fault or not? Any
suggestion on what to do next is much appreciated! 
Thanks, 73, Per  SM0WRA .
K2 no 1623, K1, KX1


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[Elecraft] RS-232 communication failure KPA100

2008-02-19 Thread Per Enocson

My PC to KPA100 communication suddenly failed. Checked the cabling and did
some initial tracing from J1 to U4. Seems ok incl. RFC:s. I found deviating
voltages on U4 pins:
2   -5,5
3   -10,7
4,5,6   -5,5
7,8 -10,7
with remaining U4 pin readings ok. Then tried to find the 16293 kHz signal
on my SW receiver but couldn´t hear it. I however find  -75 V at the end of
the diode chain.so is the HV xtal oscillator at fault or not? Any
suggestion on what to do next is much appreciated! 
Thanks, 73, Per  SM0WRA .
K2 no 1623, K1, KX1


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[Elecraft] RS-232 communication failure KPA100

2008-02-19 Thread Per Enocson

My PC to KPA100 communication suddenly failed. Checked the cabling and did
some initial tracing from J1 to U4. Seems ok incl. RFC:s. I found deviating
voltages on U4 pins:
2   -5,5
3   -10,7
4,5,6   -5,5
7,8 -10,7
with remaining U4 pin readings ok. Then tried to find the 16293 kHz signal
on my SW receiver but couldn´t hear it. I however find  -75 V at the end of
the diode chain.so is the HV xtal oscillator at fault or not? Any
suggestion on what to do next is much appreciated! 
Thanks, 73, Per  SM0WRA .
K2 no 1623, K1, KX1


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[Elecraft] RS-232 communication failure

2006-08-29 Thread Per Enocson

Från: Per Enocson [mailto:[EMAIL PROTECTED]
Skickat: den 29 augusti 2006 22:28
Till: [EMAIL PROTECTED]
Ämne: SV: [Elecraft] RS-232 communication failure


Hi Mark,
Yes, you have a valid point and I have only used cables as described in the 
KPA-100 manual.The set up worked flawlessly during four years and, mystery, all 
of sudden, communication breakdown! I am currently measuring all voltages in 
the RS-232 interface part of the amp and suspect hardware failure (defect U4 
MAX 1406??)as some voltages are out of range. 

73 Per SM0WRA



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Re: [Elecraft] RS-232 communication failure

2006-08-29 Thread Mark Saunders, KJ7BS
Remember, the KIO2 does not use an RS-232 cable!  The KIO2 requires a special 
cable for computer control.

Mark Saunders, KJ7BS
Glendale, AZ 

K2 S/N 0539

 Per Enocson <[EMAIL PROTECTED]> wrote: 

=
Back from my summer vacation, my K2/100 and PC don´t get along anymore.
Everything else works fine, also the communication between the K2 and the
KAT-100, although initially there was a slight trouble with the keyer (no
dits or dahs,just one steady note, whichever paddle pressed). I have tried
with three different PC:s and with two different cables (one built new for
testing). I am convinced that the PC communication settings are correct. I
have followed the troubleshooting suggestions.  Any suggestion on what to do
next is very much appreciated. E.g. how do I conclude if this is a hardware
or a software issue?  Are there any known compatibility issues between
firmware 2.04 which I recently installed when doing the keying modification
and the  1.06 firmware (old) of my KPA-100? Thanks  Per SM0WRA K2/100 no
1623




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[Elecraft] RS-232 communication failure

2006-08-29 Thread Per Enocson
Back from my summer vacation, my K2/100 and PC don´t get along anymore.
Everything else works fine, also the communication between the K2 and the
KAT-100, although initially there was a slight trouble with the keyer (no
dits or dahs,just one steady note, whichever paddle pressed). I have tried
with three different PC:s and with two different cables (one built new for
testing). I am convinced that the PC communication settings are correct. I
have followed the troubleshooting suggestions.  Any suggestion on what to do
next is very much appreciated. E.g. how do I conclude if this is a hardware
or a software issue?  Are there any known compatibility issues between
firmware 2.04 which I recently installed when doing the keying modification
and the  1.06 firmware (old) of my KPA-100? Thanks  Per SM0WRA K2/100 no
1623

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[Elecraft] RS-232 communication failure

2006-08-29 Thread Per Enocson
Back from my summer vacation, my K2/100 and PC don´t get along anymore.
Everything else works fine, also the communication between the K2 and the
KAT-100, although initially there was a slight trouble with the keyer (no
dits or dahs,just one steady note, whichever paddle pressed). I have tried
with three different PC:s and with two different cables (one built new for
testing). I am convinced that the PC communication settings are correct. I
have followed the troubleshooting suggestions.  Any suggestion on what to do
next is very much appreciated. E.g. how do I conclude if this is a hardware
or a software issue?  Are there any known compatibility issues between
firmware 2.04 which I recently installed when doing the keying modification
and the  1.06 firmware (old) of my KPA-100? Thanks  Per SM0WRA K2/100 no
1623




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[Elecraft] RS-232 communication failure

2006-08-28 Thread Per Enocson
Back from my summer vacation, my K2/100 and PC don´t get along anymore.
Everything else works fine, also the communication between the K2 and the
KAT-100, although initially there was a slight trouble with the keyer (no
dits or dahs,just one steady note, whichever paddle pressed). I have tried
with three different PC:s and with two different cables (one built new for
testing). I am convinced that the PC communication settings are correct. I
have followed the troubleshooting suggestions.  Any suggestion on what to do
next is very much appreciated. E.g. how do I conclude if this is a hardware
or a software issue?  Are there any known compatibility issues between
firmware 2.04 which I recently installed when doing the keying modification
and the  1.06 firmware (old) of my KPA-100? Thanks  Per SM0WRA K2/100 no
1623

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