Don and the members of the list, I am still troubleshooting the alignment issue. I am better now than I was a couple of days ago. Don and I have been comparing notes. I have removed the ATU from the circuit and tried some other things. After some poking around with the RF probe I have confirmed that the issue is within the 80/160m band pass filter. (Lots of RF into the filter... very little coming out.) I have been messing with C13/C14 making sure that they have a good connection.
After some poking around with the probe I was noticing an occasional oscillation at which point the RF power levels would change and I would see some significant RF. It seems like L4 is extremely sensitive after the addition of the 160m module and C13/C4. Now if I move my hand or a plastic screwdriver by it the circuit is detuned or goes into a slight oscillation. That made it extremely hard to tune up the band pass filter initially. After some tweaking I am now seeing 11-13.5w out on 80m & 160m without the ATU in the circuit. I am going to add the ATU back into the circuit and do some more testing. (The ATU was not the issue... it was removed as part of the troubleshooting steps.) Has anyone else noticed L4 being ultra sensitive after the addition of the 160m module? Thanks, JH ----------------------------- John Hoaglun NG0R - EN25 http://www.hoaglun.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
