John, Worst case would be to open it and replace the switch with one that has the same physical characteristics but it normally open.
Best case - it may be a double-throw switch that just needs to be re-wired. 73, Don W3FPR On 1/9/2012 12:20 PM, John Shadle wrote: > I just checked again and, yes, it's wired to OPEN when depressed and CLOSED > otherwise. Hrm. > > Can I use this for PTT or is it simply "junque"? > > -john W4PAH > > On Mon, Jan 9, 2012 at 12:10 PM, Rose<[email protected]> wrote: > >> Hi John, >> >> Could the switch actually be a DPST and wired to -open- when the >> switch is depressed? There are some musical (band) applications >> where this would be the case. >> >> 73! >> >> Ken - K0PP >> >> On Mon, Jan 9, 2012 at 5:06 PM, John Shadle<[email protected]>wrote: >> >>> Hi all, >>> I am finally getting the ol' radio back up and running after a few months >>> of packing and moving from NC to WI. In my past life (in NC) I was mostly >>> CW, but now that the shack is in the basement I want to get back on SSB. >>> >>> I have an Elecraft desk mic (the Heil version from a few years ago). It >>> has >>> an input for a 1/4" footswitch controller for PTT. I've never used a >>> footswitch before, so this is all new to me. >>> >>> I don't have a Heil footswitch, but do have an older Yamaha foot pedal >>> which I picked up at a yard sale a couple of years ago. It creates a >>> closed >>> circuit whenever I depress the switch (and is open otherwise). The odd >>> thing is that whenever I plug in this footswitch, the PTT is engaged when >>> the switch is plugged in--and the PTT is disengaged when I depress the >>> switch. This seems like odd behavior to me. Is there something in the menu >>> that I need to change? Advanced mic parameters? I'm kinda lost. >>> >>> I cracked the case open to view the innards, but it's just two wires (tip >>> and ground for the 1/4" cable) and a switch. I don't think there's >>> anything >>> I can do in there to modify things. >>> >>> The model appears to be a Yamaha FC5 ( >>> >>> http://usa.yamaha.com/products/music-production/accessories/footswitches/fc5/?mode=model >>> ), >>> although I can't find a model number on it. >>> >>> Thanks! >>> -john W4PAH >>> Madison, WI >>> ______________________________________________________________ >>> 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 >>> >> > ______________________________________________________________ > 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 > ______________________________________________________________ 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
