On SCC's Installation FAQ page I see this explanation: "Analog or switching power supplies themselves are highly susceptible to RF. A few millivolts of RF in the power supply can create an instability which could lead to a catastrophic failure. We never recommend regulated or switching power supplies because no one can predict when RF is upsetting the power supply and all installations differ in characteristics."
http://www.sgcworld.com/smartinstallFAQ.html Perhaps they are talking about RF pickup on a long run of power cable between a coupler located at the antenna and the power supply in the shack?? Bob NW8L On Tue, Nov 2, 2010 at 5:13 PM, stan levandowski <sjl...@optonline.net> wrote: > If there is any lister using the SGC-237 autocoupler, could you please > tell me what power supply you are using for it? > > My coupler (backordered for two months - they are apparently very > popular) is arriving on Friday and I just found out from an SGC tech's > email that I am only supposed to use an UN-regulated power supply (but > NOT a wall wart). > > > So after buying a nice Astron RS-20M power supply for my new K2, I find > out I can't use it to power the coupler because the coupler "might > destroy the Astron electronics" according to SGC (no details as to "how" > or "why" in the email). > > Unfortunately, SGC's policy is that all technical assistance is via > email only so I can't have a phone conversation with anyone there (I > already tried!). > > Thanks! > > > Stan Levandowski WB2LQF > QRP CW: Skill, not power! > QCWA #35038 OOTC #4558 NAQCC #4740 SKCC #6488 FISTS #14992 > ______________________________________________________________ > 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 > ______________________________________________________________ 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
