Lightspeed does it again

I do have the PS Engineering 1000.
Sure would like to have a quiet ride. My avionics shop cannot find
anything
wrong with the radios.

Contact PS Engineering, Hank. In my experience, they are uncommonly helpful
with these kinds of things. (I worked with them for a while to "fix" the
automatic squelch that wasn't working quite right. Although the ultimate
solution was a new headset, they were very patient and customer service
oriented.)
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"

Hankal,

not sure what your problem is (not sure if you described it here), but
have you contacted PSE?

--
Thomas Borchert (EDDH)

not sure what your problem is (not sure if you described it here), but
have you contacted PSE?

NO I have not since my avionics shop tells everything is fine. Maybe they think
it is in the radios.
You haapen to have a number for PSE?
Hank

You haapen to have a number for PSE?

http://www.ps-engineering.com/
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"

Hankal,

You haapen to have a number for PSE?


Have you heard of this newfangled thing called the internet that
everybody uses these days? I tell ya, it's huge, man.

Care to give us an exact description of your problem? Maybe someone
here can help already. What's wrong with your intercom/headset
installation?

--
Thomas Borchert (EDDH)

Hankal wrote:
: Have you ever had a problem with squelch noise when you use two different makes
: of headsets.
: When my buddy who has a Lightspeed flies with me I get a lot of noise and I
: have to ask him to use my other Avcom.

As I mentioned before, check to make sure that it's not just the
headsets. There's a significant difference between these common noise
problems:

1. "Single Squelch Noise" Different headset sensitivites make setting the
squelch impossible. One headset breaks squelch too easily and the other
poor fool has to holler in his headset to get the squelch to break.
Solution is to get matching headset mic sensitivites or intercom with
multiple squelch triggers.

2. "Mic gain mismatch" Somewhat like #1, but slightly different. This
one shows up as one person having to yell into his mic *after* the squelch
is already open. Solution is to adjust mic gain (some headsets allow
this), and/or get intercom with separate mic circuits for each position.
When a mic triggers a squelch break, only that mic is turned on.

3. "Noise-cancelling mic" Headsets use a "differential" microphone that
relies on the proximity of the mic to the mouth to work. The common-mode
cabin noise enters roughly equally on each side of the mic boom, but the
person speaking is louder on one physical side than the other. The mic is
supposed to pick up on this differential-mode signal, but reject the
common-mode ambient noise. Unfortuately, some headsets simply have poorer
noise rejection qualities than others. Usually, there's nothing that can
be done with this, except using a different headset.

I have gone around on this one myself, having gone through #1 and
#2. I'm currently at #3 (but with a much nicer intercom than before) and
looking to get another headset. The irony is that my cheap FlightLine
HS-60B passive $100 headset has the best mic in the bunch. A DRE-6000 ANR
has the worst mic, letting in huge amounts of cabin noise when the person
wearing it speaks. The Lightspeed 15k, 20k, 25xl have mic performance
somewhere in the middle, but with the 25xl having the worst noise
performance.

Anyway, that's what I've found out over the past year or so of
fiddling with my plane and headsets. Between the poor mic and lousy
high-frequency attenuation, I'm not shelling out the bucks for a high-end
Lightspeed. I have tried and did like the QFR cross-country though. You
should see if you can isolate what kind of noise you've got before you go
fixing things that aren't broken.

-Cory

--
************************************************** ***********************
* The prime directive of Linux: *
* - learn what you don't know, *
* - teach what you do. *
* (Just my 20 USm$) *
************************************************** ***********************

Anyway, that's what I've found out over the past year or so of
fiddling with my plane and headsets. Between the poor mic and lousy
high-frequency attenuation, I'm not shelling out the bucks for a high-end
Lightspeed. I have tried and did like the QFR cross-country though. You
should see if you can isolate what kind of noise you've got before you go
fixing things that aren't broken.
-Cory
Guess I am not alone with this problem.
I thought of getting either Lightspeed or David Clark, but now I think I keep
my Avcoms
Hank

Hankal,

Guess I am not alone with this problem.
I thought of getting either Lightspeed or David Clark, but now I think I keep
my Avcoms


Hmm, no offense meant, but something here seems to be lacking in your problem
analysis process. Nothing papenfuss said has anything to do with changes in
your audio by putting a hand near the radio stack, for example. Also, your
esxisting set-up doesn't work, so what does that have to do with buying new
equipment? From your description, there seems to be a serious grounding problem
in your radio/audio set-up. Get it solved!

--
Thomas Borchert (EDDH)