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#1
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Headphones / Mic - Aviatin Type ?
Hi to all,
Someone offered for an reasonable price an Aviation Headphone / Mic (Avcomm). Noise canceling for the headphones by beeing very closed earcups and something like a 'noise reduction chip' in the Mic. Are those devices useable for Ham Radio? Anyone ever tried this with an ICOM or Yeasu tranceiver? Any comment is welcome! 73 Wolfgang OE1MWW |
#2
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I believe there was an article in QST within the last three months
describing the aircraft interface. It needs power for the mic. The interface hasn't changes for a long time and you can still use a carbon mic., so it provides a fairly high level output. -- Steve N, K,9;d, c. i My email has no u's. "Wolfgang K. Meister" wrote in message ... Hi to all, Someone offered for an reasonable price an Aviation Headphone / Mic (Avcomm). Noise canceling for the headphones by beeing very closed earcups and something like a 'noise reduction chip' in the Mic. Are those devices useable for Ham Radio? Anyone ever tried this with an ICOM or Yeasu tranceiver? Any comment is welcome! 73 Wolfgang OE1MWW |
#3
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I believe there was an article in QST within the last three months
describing the aircraft interface. It needs power for the mic. The interface hasn't changes for a long time and you can still use a carbon mic., so it provides a fairly high level output. -- Steve N, K,9;d, c. i My email has no u's. "Wolfgang K. Meister" wrote in message ... Hi to all, Someone offered for an reasonable price an Aviation Headphone / Mic (Avcomm). Noise canceling for the headphones by beeing very closed earcups and something like a 'noise reduction chip' in the Mic. Are those devices useable for Ham Radio? Anyone ever tried this with an ICOM or Yeasu tranceiver? Any comment is welcome! 73 Wolfgang OE1MWW |
#4
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Steve Nosko wrote:
I believe there was an article in QST within the last three months describing the aircraft interface. It needs power for the mic. The interface hasn't changes for a long time and you can still use a carbon mic., so it provides a fairly high level output. -- Steve N, K,9;d, c. i My email has no u's. "Wolfgang K. Meister" wrote in message ... Hi to all, Someone offered for an reasonable price an Aviation Headphone / Mic (Avcomm). Noise canceling for the headphones by beeing very closed earcups and something like a 'noise reduction chip' in the Mic. Are those devices useable for Ham Radio? Anyone ever tried this with an ICOM or Yeasu tranceiver? Any comment is welcome! 73 Wolfgang OE1MWW It won't work without an adapter. The microphone (it is an active device) needs power supply. The industry standard is a 12V power supply thru a 470 ohm resistor to the 'hot' lead of the microphone. The audio is AC coupled from the 'hot' lead. The output level is usually adjustable from about .25Vrms to about 2.5Vrms. The AC output impedance is very low - probably a few tens of ohms. Bob. |
#5
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Steve Nosko wrote:
I believe there was an article in QST within the last three months describing the aircraft interface. It needs power for the mic. The interface hasn't changes for a long time and you can still use a carbon mic., so it provides a fairly high level output. -- Steve N, K,9;d, c. i My email has no u's. "Wolfgang K. Meister" wrote in message ... Hi to all, Someone offered for an reasonable price an Aviation Headphone / Mic (Avcomm). Noise canceling for the headphones by beeing very closed earcups and something like a 'noise reduction chip' in the Mic. Are those devices useable for Ham Radio? Anyone ever tried this with an ICOM or Yeasu tranceiver? Any comment is welcome! 73 Wolfgang OE1MWW It won't work without an adapter. The microphone (it is an active device) needs power supply. The industry standard is a 12V power supply thru a 470 ohm resistor to the 'hot' lead of the microphone. The audio is AC coupled from the 'hot' lead. The output level is usually adjustable from about .25Vrms to about 2.5Vrms. The AC output impedance is very low - probably a few tens of ohms. Bob. |
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