I just quickly tested my K3 s/n 8895 at 100w output into a 52 ohm dummy load. Key up = 13.5 vDC; Key down = 21.6 vDC. My power cable between my K3 and the Astron 75 amp power supply is homemade #8 twin wire about 8' long.
73, Tom - W4BQf -----Original Message----- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Charles Yahrling Sent: Friday, August 21, 2015 11:06 AM To: elecraft@mailman.qth.net Subject: [Elecraft] normal K3 voltage drop on TX What would be a normal value on the FP voltage display when tx at 100W, using factory fused cables? No sub installed. PS is Astron VS-35M linear, voltage set at 13.9 idling per FP display. drops to 11.1 on TX. Current varies but up to 15.5A indicated. Specs call for 17-22A tx @100W. I suspect bad pass transistor and/or high drop over fuses, but want to establish normal indication for tx drop. 11.1v seems way out. tnx in advance -- de AB1VL NAQCC #6799 ab1vl.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to alderm...@windstream.net ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
