Casey, If you have some 1N4148 diodes available, they will work. The only downside is that they do not work as well as the 1N5711s at very low power levels, and they are not as flat with respect to frequency, but if you can tolerate those items, 1N4148s will serve you well.
BTW - due to the way the K2 (and K3) control power, you are will achieve better control and IMD if you drive the audio up to ust before the point where ALC kicks in (that is no ALC bars on the K2, and the 4th bar - but not the 5th - on the K3). Then use the radio's power control to set the power level. You can do the CAL TMP without assembling everything, just put the KPA100 board (or board and heatsink) upside down on a box or book to the right of the K2. You can plug the cables in and set the menu CAL TMP properly - match the setting to the ambient air temperature. 73, Don W3FPR TI2/NA7U wrote: > D17 is about 1K ohms both directions, D18 about 2K ohms both directions. I > can order these 1N5711s on eBay but it will take a couple weeks at least to > receive them here in CR. Will have to re-assemble the radio to test CAL TPA > settings, forgot to do it first. PAs don't show any physical signs of > cooking. I'd set the radio for 40W max on SSB and backed off the audio level > so that the wattmeter showed half that. The 100W on the wattmeter was only > measured in CW mode. > > 73, > > Casey > > ----- > http://adullroar.blogspot.com Costa Rica Blog > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
