Don, Thanks for the reply..
>> The 2SC5739 does seem to have higher gain at higher frequencies than >> the 2SC2166, so your 20 meter output may improve if you change it, >> but I can offer no guarantees on that The plastic tab safety factor was obvious but, of course, I was wondering if there was an improvement in the upper frequency efficiency..... >>Should you make the change and find your power output is above 4 watts, >> reduce the setting of R1 to the 4 watt level. The components in the KX1 PA >> output stage can be stressed at power levels much in excess of 4 watts. I will definitely keep tha in mind... on the surface it looks like a simple swap --- the thing to decide is if there is a real noticeable performance improvement... Thanks again... -- Dave G. KK7SS '65 MK III Sprite in Richland, WA The Original Point and Click --- Smith and Wesson.... _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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