From: Doug McLaren [EMAIL PROTECTED]
Of course it's a real phenomenon. The technical term is `desense'.
http://users3.ev1.net/~medcalf/ztx/desense.html
It's also called the near-far problem.
Imagine trying to hear a whisper across a crowded room. Nearby louder voices
drowned out the
@airage.com
Subject: Re: [RCSE] Re: TX RF output? Long!
From: Doug McLaren [EMAIL PROTECTED]
Of course it's a real phenomenon. The technical term is `desense'.
http://users3.ev1.net/~medcalf/ztx/desense.html
It's also called the near-far problem.
Imagine trying to hear a whisper across
Hmm. Of course this is true when all are speaking in the same
frequency range. But how about if all the other conversations are
being held above 20khz or below 20hz??
Does sheer power on other frequencies swamp the front end of a
receiver? Shouldn't we see more evidence of this at the
] Re: TX RF output? Long!
From: Doug McLaren [EMAIL PROTECTED]
Of course it's a real phenomenon. The technical term is `desense'.
http://users3.ev1.net/~medcalf/ztx/desense.html
It's also called the near-far problem.
Imagine trying to hear a whisper across a crowded room
A PCM signal is no better than PPM. The only benefit would have been if the
PCM Rx went into fail safe. Obviously could have been quite helpful. If it
did go into failsafe.
Bill Swingle
Janesville, CA
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On Fri, Mar 10, 2006 at 11:08:42AM -0500, Rick Eckel wrote:
| Hmm. Of course this is true when all are speaking in the same
| frequency range. But how about if all the other conversations are
| being held above 20khz or below 20hz??
Yes, whispered voices aren't the best analogy, as they
From: Rick Eckel [EMAIL PROTECTED]
But how about if all the other conversations are
being held above 20khz or below 20hz??
Does sheer power on other frequencies swamp the front end of a
receiver? Shouldn't we see more evidence of this at the launch area?
===
Up or
Imagine trying to hear a whisper across a crowded room. Nearby louder
voices drowned out the one familiar voice you are trying to hear. All
radio receivers face the same issues. (Jon Stone)
This is where the magic of the newer receivers comes into play. Like any
other radio they also have a
As it would have Bill...if indeed a PCMm RX was employed, as the communications
protocol would have been different (except in the unlikely case the offending
TX was identical and on the same frequency). A PCM RX would immediately have
gone into hold, and then would have either returned to
From: Doug McLaren [EMAIL PROTECTED]
For desense to occur, the signals don't even have to be in the same
band. For example, in my car the FM radio (88-108 MHz) signal gets
noticibly quieter when I transmit on my 144 MHZ ham radio.
Same thing happens in my
Ok, great thread and to some degree, educational. While I have absolutely no
technical background on this subject, I have been the victim of a very
expensive and unavoidable, on my part, shoot down. I basically considered it
a swamping incident, another term for you experts to butcher. This
- Original Message
From: EXT-McCleave, Howard R [EMAIL PROTECTED]
I was flying at about 50 feet of altitude along the tree line at the west end
of the field when the plane did an immediate vertical dive into the ground with
no possibility of recovery. When I walked out to get the
On Thu, Mar 09, 2006 at 10:28:37AM -0600, EXT-McCleave, Howard R wrote:
! What do you think experts, is swamping a real phenomenon or did
| he have a lousy TX?? Plane's gone but I would still be interested to
| know what y'all think.
Of course it's a real phenomenon. The technical term is
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