Helicopter plug issue
Thread Starter
Join Date: Oct 2010
Location: 5° above the Equator, 75° left of Greenwich
Posts: 412
Likes: 0
Received 0 Likes
on
0 Posts
Helicopter plug issue
Hello.
I bought a Bose A20 headset with a U-174/U plug. Although my aircraft is a Twin Otter it has a helicopter socket, the U-92A/U. The thing is, though, when I plugged it in this morning, I couldn't get any sound off the mic; not on the PA, not to ATC either. The airplane's DC headset worked with no problem (for the whole 7:31 I flew
). The headset seems to be receiving sound though, as I could hear the other pilot through the headset.
The question is: What am I doing wrong? What am I missing? Do the plugs match or do I need an adapter?
Thanks in advance
I bought a Bose A20 headset with a U-174/U plug. Although my aircraft is a Twin Otter it has a helicopter socket, the U-92A/U. The thing is, though, when I plugged it in this morning, I couldn't get any sound off the mic; not on the PA, not to ATC either. The airplane's DC headset worked with no problem (for the whole 7:31 I flew
). The headset seems to be receiving sound though, as I could hear the other pilot through the headset.The question is: What am I doing wrong? What am I missing? Do the plugs match or do I need an adapter?
Thanks in advance
Join Date: Dec 2003
Location: Australia
Posts: 926
Likes: 0
Received 0 Likes
on
0 Posts
I am electronically illiterate so this may be totally wrong.
Could it be the difference between US NATO plug/socket vs UK NATO plug/socket?
See http://www.pprune.org/rotorheads/303...dset-plug.html
John
PS Could there be a more blatant example of bloody useless national bloody mindedness than the US vs UK NATO plugs being wired differently! (I obviously like the word bloody!).
Could it be the difference between US NATO plug/socket vs UK NATO plug/socket?
See http://www.pprune.org/rotorheads/303...dset-plug.html
John
PS Could there be a more blatant example of bloody useless national bloody mindedness than the US vs UK NATO plugs being wired differently! (I obviously like the word bloody!).
Last edited by rjtjrt; 7th Jul 2011 at 04:03. Reason: Further thought.
Thread Starter
Join Date: Oct 2010
Location: 5° above the Equator, 75° left of Greenwich
Posts: 412
Likes: 0
Received 0 Likes
on
0 Posts
Hi all.
Thanks for the replies. I didn't get the bluetooth option.
What does that means then? Do I need to change the boom?
EDIT: By the way, the David Clark headset plug fits perfectly into the socket, but somehow my headset plug seems to pull back just a little bit and if I held the plug and the socket together, the mic still doesn't work.
Regards
Thanks for the replies. I didn't get the bluetooth option.
What does that means then? Do I need to change the boom?
EDIT: By the way, the David Clark headset plug fits perfectly into the socket, but somehow my headset plug seems to pull back just a little bit and if I held the plug and the socket together, the mic still doesn't work.
Regards
Last edited by Escape Path; 7th Jul 2011 at 09:31. Reason: Added additional info
Chief Bottle Washer
Escape Path,
Maybe a read of these threads may help?
What impedance is best is best for what aircraft?
This post in the Helmets thread
Impedance matching
Or search "Bose":
New Bose A20 headset
Maybe a read of these threads may help?
What impedance is best is best for what aircraft?
This post in the Helmets thread
Impedance matching
Or search "Bose":
New Bose A20 headset
Thread Starter
Join Date: Oct 2010
Location: 5° above the Equator, 75° left of Greenwich
Posts: 412
Likes: 0
Received 0 Likes
on
0 Posts
Thanks all for the replies.
@Um...Lifting...: I removed the foam cover and I couldn't find any figure about the impedance. The mic shape however, matches your description of a low impedance mic.
I just talked to the guy who does the avionics at my airline (there are a handful of pilots with the same headset, different plug though) and he says the mic is the correct one (impedance-wise) and that the problem might be the polarity. He reckons (by verbal diagnosis though) that by inverting the polarity of the mic the problem will be solved. I'm gonna see him tomorrow and hopefully he'll get them working. I'm dead tired of flying with those knackered DC's
@Um...Lifting...: I removed the foam cover and I couldn't find any figure about the impedance. The mic shape however, matches your description of a low impedance mic.
I just talked to the guy who does the avionics at my airline (there are a handful of pilots with the same headset, different plug though) and he says the mic is the correct one (impedance-wise) and that the problem might be the polarity. He reckons (by verbal diagnosis though) that by inverting the polarity of the mic the problem will be solved. I'm gonna see him tomorrow and hopefully he'll get them working. I'm dead tired of flying with those knackered DC's
Last edited by Escape Path; 7th Jul 2011 at 21:10.
