Hi Don, Petr and all,
I have a similar TX problem that I've been working on for a time.
Reading your emails I realized
that I'm using a K1 manual Rev. J. 2015.
My K1 is from around 2000, Rev. D, and I'm now asking if the Rev. J of
the manual is OK to use
as reference and for troubleshooting?
I have been searching for K1 Rev. D manual but can't find it.
Thanks!
Bert VE3NR
On 4/16/2019 10:55 AM, Don Wilhelm wrote:
Petr.
Turn that manual to Appendix E near the back. And on page 6 of that
Appendix, you will find Transmitter Signal Tracing.
Set up the K1 as instructed there, and no damage will be done.
Then make the measurements in the order listed. You will need an RF
probe. If you are using an oscilloscope (with a 10X probe), multiply
the expected values by 2.8 to obtain the expected peak to peak RF
voltage measurements.
At the FIRST measurement that is significantly less than the expected
value (expect as much as a 10% variation before saying it is
significant) you have reached the output of the failing stage.
Correct that stage and move onward to the next failure point.
That is the procedure required to determine why it is not working.
If the final is blown, replace it with the K1PAKIT from Elecraft.
73,
Don W3FPR
On 4/16/2019 9:17 AM, Petr, OK1RP/M0SIS wrote:
Don,
I checked other parts in TX section and it seems to be ok (refer to
manual
2000 Rev. D). Just removed the 5th turn on secondary winding of T3.
Is there something else strange or danger which I should check in
order to
avoid smoke during the test or even blowing the final please?
Many thanks mate,
Petr
-----
73 - Petr, OK1RP
"Apple & Elecraft freak"
B:http://ok1rp.blogspot.com
MeWe: https://bit.ly/2HGPoDx
MeWe: https://bit.ly/2FmwvDt
--
Sent from: http://elecraft.365791.n2.nabble.com/
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