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Old September 4th 06, 01:57 AM posted to rec.aviation.piloting
Larry Dighera
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Posts: 3,953
Default Why don't voice radio communications use FM?

On Sun, 03 Sep 2006 21:55:57 +0200, Mxsmanic
wrote in :

Larry Dighera writes:

So you are proposing that the worldwide aviation community re-equip
all their aircraft and facilities with FM, and that all aviation
stakeholders bear the cost of those conversion, so that you won't hear
a hiss?


I suggest that a less noisy method of communication be found and
implemented, so as to increase safety by improving the reliability of
voice radio communication.


You haven't adequately demonstrated the need for a less noisy method
of aviation communications, in my opinion. You allude to NTSB
accident statistics, but you fail to back up your assertions with
actual statistical data. That's pathetically unconvincing.

I'll give you a point for the fact that Mr. Gardner has found a market
for his aviation communication treatise*, but I believe you'll find
that most of the pilots reading this message thread disagree with your
perceived need for less noisy radio receivers. They'll/we'll agree
that _ambient_ noise is a true barrier to intelligibility issue, and I
would guess most pilots have paid for ambient noise canceling headsets
to overcome a true barrier to radio intelligibility. But yours is the
first complaint about white noise present in aviation radio
communications impacting air safety, that I have heard in my 36 years
of being an airman, and I question its validity.

Do you really believe that what you propose will pay dividends
commensurate with its cost?


Yes.


Can you provide a cost estimate for equipping all ground and air based
communications radios throughout the world? Can you provide a
reasonable analysis of how that enormous sum of money will be repaid
by the increased level of safety it may provide? Frankly, I don't see
the justification for what you propose.
[...]

For situational awareness, it is vital for all participants to know
what the others in the vicinity are doing by hearing their
instructions and intentions over the radio.


Which is one reason why things like message queuing are potentially
dangerous.


Now that is an outright rhetorical dodge. First you said, "All
conversations are air-ground, not air-air," then when I point out you
are incorrect, you change the subject. I'm beginning to find your
lack of sincerity tiring.

For example, when I'm VFR
en route, and hear a military transport "cleared for the approach" to
an airport across whose instrument approach path I'm about to
traverse, although the transmission isn't directed to me, it provides
me with safety information that may be vital to my visually acquiring
conflicting air traffic.


You can do even better by flying IFR, but you can also get by with
visual contact only. Every increment in technology ideally provides
an increment in safety, but it's best to avoid designing systems that
increment safety for those who have them but reduce safety for those
who do not.


While what you say may be true, it is not an admission that your "All
conversations are air-ground, not air-air." statement was incorrect.
If you're not going to be accountable for what you assert, there is
little reason to continue.

You'll find it difficult to find a pilot who regards today's NAS as
armaturely designed. Are you familiar with TERPS?**


No.


If you should follow the link I provided in Message-ID:
, you'll find that they
are the _professionals_ who design the IFR approaches and route
structure.

You seem reasonably bright and to be reasonably well informed about
communications through language, and I admire your perseverance in
promoting your beliefs, but just to make you aware, you are probably
perceived by the pilots reading your articles as someone lacking
firsthand knowledge about aviation communications, someone like an MS
Flight Simulator game player. And your deliberate dodges when pressed
to defend your statements belies someone less than forthright and
sincere.




* http://www.amazon.com/exec/obidos/tg...75731?v=glance