Here's a funny story. Last week I ordered a KPA500. Two days later a nearby Ham dropped off his KPA500 that failed. His K3 was showing high SWR with no power. He purchased his a year ago and didn't want to pay the expense of shipping it back to the factory.
I found a defective Q5 (see the TR switch schematic) on the Filter board. Q5, an IPA50R399P is a 550v MOS Power Transistor. My question is; Q4 a similar device (an IRFSL9N60A) with almost identical specifications except it's a 600V, MOS transistor. Can I use it as a replacement for an IPA50R399P? Jack WA9FVP Willco Electronics ----- Jack WA9FVP Sent from my TRS-80 :-) -- View this message in context: http://elecraft.365791.n2.nabble.com/KPA500-fault-at-H44KW-no-pwr-high-SWR-tp7570161p7594358.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ 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 Message delivered to [email protected]
