GA Headsets

Could someone please tell me the size of the plugs used on GA fixed wing
headsets, and which one is used for the headphones and which for the
microphone? I should be able to use google for this one, but can't see it
anywhere.
--
Lyndon

"Ross Younger" <news05@crazyscot.com> wrote in message
news:Djz*ugYPr@news.chiark.greenend.org.uk...
>* Lyndon <merrywobsonitsown@yahoo.co.uk> wrote:
>>Could someone please tell me the size of the plugs used on GA fixed wing
>>headsets, and which one is used for the headphones and which for the
>>microphone?
>
> The headphones are historically the PJ-055 or M-642/4-1 jack plug,
> which is a quarter-inch (6.35mm) in diameter. (NB that some headsets
> and intercoms are capable of stereo, some not. One sees quite a lot of
> kit these days using standard 6.35mm audio jacks.)
>
> The microphone is a PJ-068B or M-642/5-1 plug, which is 0.206" or about
> 5.23mm in diameter.
>
Thanks Ross. If a headset is stereo what are the implications of that? Isn't
the same information always presented to both sides? This could be
significant because I am completely deaf in my left ear.
--
Lyndon

Some headsets, especially ANR ones, allow different volumes to be played in
each ear because they have sockets to take car phones and MP3 players. yes,
I know, but thats how it is.

David

"Lyndon" <merrywobsonitsown@yahoo.co.uk> wrote in message
news:hsKdnajarL6xBwHbnZ2dnUVZ8qKvnZ2d@bt.com...
>
> "Ross Younger" <news05@crazyscot.com> wrote in message
> news:Djz*ugYPr@news.chiark.greenend.org.uk...
>>* Lyndon <merrywobsonitsown@yahoo.co.uk> wrote:
>>>Could someone please tell me the size of the plugs used on GA fixed wing
>>>headsets, and which one is used for the headphones and which for the
>>>microphone?
>>
>> The headphones are historically the PJ-055 or M-642/4-1 jack plug,
>> which is a quarter-inch (6.35mm) in diameter. (NB that some headsets
>> and intercoms are capable of stereo, some not. One sees quite a lot of
>> kit these days using standard 6.35mm audio jacks.)
>>
>> The microphone is a PJ-068B or M-642/5-1 plug, which is 0.206" or about
>> 5.23mm in diameter.
>>
> Thanks Ross. If a headset is stereo what are the implications of that?
> Isn't the same information always presented to both sides? This could be
> significant because I am completely deaf in my left ear.
> --
> Lyndon
>

Ross Younger <news05@crazyscot.com> wrote:

>Stereo headsets
>usually have a selector switch so they work correctly when plugged into
>mono aircraft.

Funny that, my Bose headsets have a mono/stereo switch but only on a
pre-2000 model. After that they are fixed to stereo only.