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Author Topic: Swan 500C Microphone  (Read 2395 times)
W9DEW
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« on: August 14, 2005, 07:32:06 PM »

I purchased a Swan 500C at a hamfest today and it appears to me in working order, but it does not have a microphone with it.  The manual says that it requires a "high impedance" microphone.  I have an old Astatic D-104 lying around that I bought years ago (I don't remember why now.   Probably because I thought it looked "ham-like".).  

In any event, I believe it is a "high impedance" microphone, but I would like to confirm that.  

Thanks & 73,
Don, W9DEW
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N3BIF
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« Reply #1 on: August 15, 2005, 06:50:44 AM »

 Most likley is , If the D104 head is on a TUG stand, remove the base plate , a wiring diagram and some specs should be on the plate. While you are in their check to see if it is amplified and the state of the battery if present.
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WB2WIK
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« Reply #2 on: August 15, 2005, 04:25:15 PM »

The D-104 is absolutely high impedance, and probably the highest impedance microphone ever sold into the communications market.  It worked perfectly with a SW-500C.

However, many D-104s sold in the "later years" (mostly in the 80s and 90s) had preamplifiers built into their stand bases, and no switch to bypass the preamp -- it was always in line.  The preamp's output is low impedance, and also since the preamp is very unnecessary with the Swan, it could really screw things up.  If you have a preamplified stand, it would be best to replace that with a "passive" stand (that only supports the D-104 "head" and does nothing else) or rewire the preamp to bypass it entirely.

WB2WIK/6
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WA6BFH
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« Reply #3 on: August 17, 2005, 11:37:17 AM »


Oh my goodness.

How can it be possible to use any microphone, other than a Swan microphone, with a Swan radio?

Also, how terrible that anyone would sell a radio without everything that it might need. These should include spare fuses, any connectors needed etc

This is shocking!
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WA3IRJ
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Posts: 119




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« Reply #4 on: August 25, 2005, 06:20:59 PM »

The D-104 will work very well( no pre-amp). Or just find a Shure 444...
..I have one on my 500cx. It gets very good reports on audio as well.
good luck
73
JohnB
KB3lxy
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