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Author Topic: DavidClarkHeadset with Kenwood TS-520  (Read 387 times)
VA7JWS
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Posts: 1




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« on: June 07, 2008, 05:15:49 PM »

I have a David Clark H10-20 avaiation headset that I would like to useon my Kenwood TS-520 Radio. The headset speakers are 150 ohms and the microphone is is 50 ohms (electret). The TS-520 is designed for 8 ohms headphones and requires a high impedance microphone (50 k ohms).
Does anyone know of an impedance transformation circuit for this application?
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KE4DRN
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Posts: 3722




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« Reply #1 on: June 13, 2008, 04:05:42 PM »

hi john,

hope this helps

http://wsanders.net/blog/static.php?page=static070527-095119

December 2003 QST, Page 57. Provides impedance matching and attenuation.

also good topic here on eham

http://www.eham.net/forums/Elmers/183138

73 james
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