In a message dated 5/20/06 7:19:38 AM Eastern Daylight Time, [EMAIL PROTECTED] writes:
> 1. A 13.8vdc dual-6146 TUBE AMPLIFIER, separate box, > with view of the tubes ... 200 watt PEP. Nice idea, but it would compete with the KPA-100. A prime rule of marketing is that you don't compete with yourself. I know > > it may sound odd - but TUBES crank it out better than > solid state - no matter what they tell us! I'm a hollow-state fan and builder/user from way back. Please explain how "TUBES crank it out better than solid state". 100 W of clean RF is the same RF whether it comes from silicon or vacuum. I'd buy > > one in a heartbeat. I might, too. But it would be more expensive than a KPA-100, and probably use even more amps. Also bigger and heavier. It would need a DC-DC inverter capable of supplying the plates, screens and grids of the 6146s. Also 1.25 amps to light the heaters. Variable caps and bandswitching, etc. Many custom parts, and the parts would have to be bought new. The big problem, though, would be getting it FCC certified. Elecraft cannot offer the KPA-100 as an external unit because of certification rules. Hams have built the KPA-100 and other amps in separate enclosures, but those are amateur-homebrew-modifications, not a product of Elecraft. Ten Tec made a 50 watt external amp for their QRP rigs - the model 405. Sweet little amp! They had to stop selling it back in the late 1970s when the rules changed. The FCC rules affect kits as well as manufactured rigs. 73 de Jim, N2EY _______________________________________________ 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
