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#1
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Station Mic Switch
hello all,
has anyone built with any degree of success a station mic switch? i would like to somehow interface all the rigs in the shack to my heil mic. if someone would be so kind as to send a schematic and parts list of what they built i would appreciate it. BTW, all the rigs i wish to interface to the mic have the same impedence. 73 mike ku4yp |
#2
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"KU4YP" wrote in message
news:kkVed.3882$8R.2887@trnddc02... hello all, has anyone built with any degree of success a station mic switch? i would like to somehow interface all the rigs in the shack to my heil mic. if someone would be so kind as to send a schematic and parts list of what they built i would appreciate it. BTW, all the rigs i wish to interface to the mic have the same impedence. 73 mike ku4yp Mike - Projects like this appear regularly in the amateur literature. Chris Cieslak, AA9HD had a November 1997 QST article, "A simple microphone/TNC/SSTV Switch" (Adobe Acrobat available to members from ARRL web site) The article references a Radio Shack multi-pole switch (275-1386A) -- which may no longer be available. An old manual serial or parallel connector switch can be salvaged (tons of this stuff in junk yards allover country) for the manual (multi-pole) radio switch. w9gb |
#3
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Hi,
has anyone built with any degree of success a station mic switch? i would like to somehow interface all the rigs in the shack to my heil mic. if someone would be so kind as to send a schematic and parts list of what they built i would appreciate it. BTW, all the rigs i wish to interface to the mic have the same impedence. One important point is to make sure that the microphone ground (not the cable screen) is treated as a separate 'live' wire throughout and not grounded in the switch only in the rigs. Failure to do this can result in hum loops. Cheers - Joe |
#4
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Hi,
Oops, I that should read - . . . and not grounded in the switch BUT only at the rigs themselves. Cheers - Joe G3LLV |
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