On 5/10/2011 3:13 PM, Jim Brown wrote: > If it were my radio, I would add one or two silicon diodes in series > with the positive lead to reduce the voltage to about 14 volts. For a > 10W K3, I'd guess that 5A diodes would be just fine.
I'd thought about that as a possibility. Heat could be an issue, especially if I want it to be easily portable, at 5A, that's about 3.5W/diode assuming a 0.7V drop. > If it's a laptop supply, I would also be concerned about RF noise that > it might produce. I'm concerned about it too, but the laptop supply is already in hand, and without a laptop, so it's worth a try. I know the old desktop PC supply I'm using now has broadband noise at 7.070-7.080, so maybe this one will be better (and definitely a lot smaller!). 73, Ross N4RP -- FCC Section 97.313(a) “At all times, an amateur station must use the minimum transmitter power necessary to carry out the desired communications.” ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
