When adjusting the bandpass filters for transmit, I do use a 'scope. The 'scope is doing nothing more that acting as a sensitive analog RF voltmeter, so nothing complex is required on setting the 'scope time base.
Just connect the 'scope probe across the dummy load (I use a 10x probe), press TUNE on the K2 and you should see an RF envelope display on the 'scope face - if not adjust the vertical amp and the trigger level until something is displayed - then set the time base so you are seeubg the CW envelope rather than a few cycles of the RF. As you adjust the bandpass filter, you should see the vertical deflection on the 'scope face shrink and grow in response to the tuning - adjust for the largest display height. 73, Don W3FPR Life is what happens when you are making other plans ----- Original Message ----- My second question is, like in the manual of the K2 on page 75 regarding 40 meter transmitter alignement, telling that we could use an oscilloscope to adjust all band pass filter in the K2. Ok, now I have one, but now where do I put my probe in the K2 and what should I expect to see on the scope when the bandpass are correctly adjust or disadjust ??? I should expect that I go the same way for all bandpass filters ??? As a newbie I am, I must have a more detail routine to do some stuff like this. But be sure this will help me !!! ;-) _______________________________________________ Elecraft mailing list Post to: [email protected] http://mailman.qth.net/mailman/listinfo/elecraft You must subscribe to post. Subscriber Info (Addr. Change, Unsub etc): http://mailman.qth.net/subscribers.htm Elecraft page: http://www.elecraft.com
