[Elecraft] K2 - Low Power - T1 put in wrong

Paul K konigsburg at aol.com
Thu May 24 13:50:32 EDT 2007


I was helping my friend debug his K2 #3920. It is the qrp version and 
will put out up to 4W no matter how the power knob is turned. So if you 
want less than 4W, the power was as specified. When we turned the knob 
to increase the power grater than 4W, the power would stay at 4W. The K2 
also indicated that only 4W were going out. The output power was 
measured with a W1 and attached to a dummy load (measured 50 ohm).

We started trouble shooting as in the manual and we found that T1 had 
two problems. The first is that there was one extra secondary winding 
(green wire). The second problem was that the green wire was installed 
into #1 and #2 and the red wires were put into #3 and #4. We are 
obviously going to fix both of these problems.

We did check T2, T3, and T4 and they seem to be correct.

We are not engineers, so our question is, could T1 explain these 
symptoms, or should we keep looking for other things?

Thanks

:) PK (Paul - K3MZ  K2 #3135  K3 #xxx)


More information about the Elecraft mailing list