Go Back  PPRuNe Forums > Flight Deck Forums > Tech Log
Reload this Page >

Telex Airman 850 Tech. advice needed!! (d/heading ANR?

Wikiposts
Search
Tech Log The very best in practical technical discussion on the web

Telex Airman 850 Tech. advice needed!! (d/heading ANR?

Thread Tools
 
Search this Thread
 
Old 27th Jan 2009, 19:29
  #1 (permalink)  
Thread Starter
 
Join Date: Mar 2005
Location: Canada
Posts: 5
Likes: 0
Received 0 Likes on 0 Posts
Telex Airman 850 Tech. advice needed!! (d/heading ANR?

I need some electrical Guru to teach me how to get my Telex 850 ANR to work in the pax cabin. Anyone out there have any experience with this situation? Thanks in advance!!

I own the Airman 850. I often am required to deadhead in the passenger cabin of commercial airlines. Most airlines these days have in-flight entertainment systems that utilize a 1/8 " standard headset jack. Now I can find a common adapter to allow me to use my airman 850 to listen to the entertainment...HOWEVER the ANR noise cancelling doesn't work due to lack of microphone power.

Is there any sort of adapter that I can make or buy that will allow me to draw power from the headset output and thus give me noise cancelling while I am sitting in the passenger cabin? Will a 1/8" headset output jack provide enough (or possible too much) power to operate the ANR? Could this fry my mic?

I'm thinking a simple splitter to go from one headset jack into two. Then upsize the 1/8" with a common radio shack adaptor. The tricky part comes from having to cut off the other half of the splitter (2nd headset output) and solder on a 'female' microphone receptacle that will fit my mic. plug. This should provide some sort of voltage/amps to the mic and (hopefully) power the ANR?

Thanks.
AlphaBravoCharlie is offline  
Old 28th Jan 2009, 19:29
  #2 (permalink)  

Beacon Outbound
 
Join Date: Mar 2002
Location: "Home is were the answer machine is"
Posts: 689
Likes: 0
Received 0 Likes on 0 Posts
Is there any sort of adapter that I can make or buy that will allow me to draw power from the headset output and thus give me noise cancelling while I am sitting in the passenger cabin?
No. There is no power coming from the headset output. Therefore, you cannot draw any.
IRRenewal is offline  
Old 28th Jan 2009, 19:57
  #3 (permalink)  
PB4
 
Join Date: Jun 2002
Location: on top
Age: 44
Posts: 88
Likes: 0
Received 0 Likes on 0 Posts
I believe the headset gets some (very little) power from the mic, it's called "mic bias" thus as in the cabin you only have the "speaker" jack and not the mic jack then I don't see how you could get power from it...
PB4 is offline  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.