Hi MOS resistors are not inductive at HF frequencies and make great dummy loads. The Elecraft DL1 and the OHR 100 watt dummy load use several MOS resistors in parallel or series parallel. The oxide is deposited on a ceramic base in a single coating so there is not any coiling to create inductance. I use them to make dummy loads by soldering a 51 ohm 5 watt inside a PL259 connector. You can use a PL259 to BNC adaptor so it will fit the K2, K1 or KX1. These loads will take 15 watts for a short time. I also have one of these with a 100 ohm MOS resistor and another with a 25 ohm resistor (2 51 ohm in parallel) that I use to check or calibrate the SWR bridges in the antenna tuners or KPA100. You can get them from Mouser in 1 watt 3 watt and 5 watt sizes
Don Brown KD5NDB ----- Original Message ----- From: Trevor Jacobs<mailto:[EMAIL PROTECTED]> To: [email protected]<mailto:[email protected]> Sent: Tuesday, June 22, 2004 12:35 PM Subject: [Elecraft] Metal Oxide Power Resistors Inductive? Hey Gang, This brings up a question I've wondered about. Are Metal Oxide power resistors inductive? Such as these: http://www.xicon-passive.com/specs/mo.pdf<http://www.xicon-passive.com/specs/mo.pdf> ? I don't see a spec in the data sheet. 73's Trev - K6ESE http://www.qsl.net/k6ese<http://www.qsl.net/k6ese> _______________________________________________ Elecraft mailing list Post to: [email protected]<mailto:[email protected]> http://mailman.qth.net/mailman/listinfo/elecraft<http://mailman.qth.net/mailman/listinfo/elecraft> You must subscribe to post. Subscriber Info (Addr. Change, Unsub etc): http://mailman.qth.net/subscribers.htm<http://mailman.qth.net/subscribershtm> Elecraft page: http://www.elecraft.com<http://www.elecraft.com/> _______________________________________________ Elecraft mailing list Post to: [email protected] http://mailman.qth.net/mailman/listinfo/elecraft You must subscribe to post. Subscriber Info (Addr. Change, Unsub etc): http://mailman.qth.net/subscribers.htm Elecraft page: http://www.elecraft.com
