[Elecraft] K2 1E field day

[G3VVT at aol.com]

In a message dated 27/06/05 16:37:10 GMT Daylight Time, ph at his.com  writes:

The only  glitch I'm having right now is that I'm getting reports of 
FM/Chirp, and I  can hear this when I transmit into a dummy load, 
listening on a  TS-940.  I thought it might be voltage drop under load, 
but reducing  power doesn't change it.  I haven't gone through the TX 
alignment so  maybe this is an alignment thing(?). 



Reply:-----------------------------------------------------------------
 
Hi Paul,
 
Check that RFC15 the 100uH choke that feeds the 5V supply to the PLL  chip U4 
pin 16 on the RF board is not O/C. Apparently a common cause of  this problem 
as it is very easily damaged during installation. Need to check it  with a 
DVM for a low through resistance as voltage tests can be  misleading.
 
Can be temporarily replaced with a wire link until a new choke is obtained  
if it is faulty. When installing a new choke carefully hold the wires next to  
the body of the choke with a small pair of needle nose pliers and bend the 
free  end of the wire with your fingers only. This helps to keep mechanical 
stress off  the choke body.
 
Bob, G3VVT