Doug, Fred, and all, I had forgotten about the 405! But you are also correct Tokyo Highpower makes two models of amplifters, a 50 watt and a 100 watt. There was also an article in QST in the last year or two that described the type of amp Fred was looking for.
Fred(FL) don't forget to check E-Bay as they frequently show up. Also subscribe to the FT-817 list on groups.yahoo.com as they are often listed. And a search of the archives will give you information on how (and whom) to contact at the factory. Yet I concur with the majority, the KPA-100 is a nicer solution, and coupled with the KAT-100 it makes for a very sweet radio. My configuration is a K-2 with all the trimmings in QRP mode, and a KPA-100/KAT-100 in an EC-2 enclosure. It affords the best of both worlds, unplug it and it is the best QRP radio of all time, and bring it back in and you have a very good 100 watt radio. If only the firmware could determine when it was connected to the KPA-100/KAT-100 or not and return control to the KAT-2. (Sorry Wayne <g>.) I dont think the KPA-100 is more expensive than a Tokyo amp either. 73, Joe N9JR ----- Original Message ---- From: Doug Person <[EMAIL PROTECTED]> To: Fred (FL) <[EMAIL PROTECTED]> Cc: elecraft@mailman.qth.net Sent: Thursday, December 7, 2006 4:36:15 PM Subject: Re: [Elecraft] Barebone K2 Amplifier? Long ago Ten-Tec made a model 405 amplifier. It could take 5 watts in and produce 50 watts out. There are also some Tokyo Highpower amps around that people have bought directly from Japan. You could also arrange to buy one directly from the company. They technically aren't legal because the FCC has restrictions on input power, bands and gain to (unsuccessfully) prevent CB operators from running more than 4 watts output. Otherwise, there are plans and boards to build a 140 watt amp that would be quite suitable. I also believe it is possible to make the KPA100 an external amplifier. I've used a number of these and in my book if you want 100 watts - buy the KPA100. I built one of the first and it was a gem. 73, Doug -- KØDXV _______________________________________________ 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
