Hi Glenn... You have done a good job of sleuthing and pondering the various solutions.
Bottom line is that you may well need to communicate via email with the boys at Elecraft about this. If they have had other similar reports (or even if they have not), they will try for a solution. Also, you may well get a response from other VHFers that have been down this road. First, I believe you're correct in figuring it is the K2 and not the transverter. I have run into exactly the same issue with one of my VHF combos. I have a Yaesu FT-897 driving a Lunar 2 meter amp (pair of 3CPX800, with very sensitive grid trip circuitry). Same exact problem. Yaesu tech support told me how to adjust some of the ALC circuitry to "tune out" or at least minimize the initial ALC related overshoot. This helped a lot. Then I "slowed down" the pulse in the grid trip circuit in the amp by adding slightly more capacitance to one of the time constant caps. The combination of these two things solved my problem. I did not try the in-line attenuator approach, but that may be helpful too. You could easily fashion a 3 db attenuator out of a length of RG-174 mini coax. It has a healthy amount of "loss" per foot, so you could quickly calculate how many feet you would need to arrive at 3 db. I have both the XV-50 and XV-144 now to use with my K2 but have not yet used them in our VHF contest station with an external amp to observe whether this phenomenon exists. I will hasten to do some testing and get back to you on this. Good luck. Dick -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Glenn McNeil Sent: Saturday, May 21, 2005 22:55 To: [email protected] Subject: [Elecraft] K2/XV144 Power Overshoot _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
