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Nah.............It means amplitude modulation.................you've
probably never heard of it before. It was first used in Walkie Talkies
by Fred Flinstone and Barney Rubble.<br>
Bill G.<br>
<br>
Gray E Fowler wrote:<br>
<blockquote type="cite"
cite="midOF825B70BE.A3BFED5C-ON86256E45.00725109@mck.us.ray.com"><br>
<font size="2" face="sans-serif">AM? what happens ? Do you
accidentally receive talk radio?<br>
<br>
<br>
<br>
Gray Fowler<br>
Principal Chemical Engineer<br>
Composites Engineering</font>
<br>
<br>
<br>
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<td><font size="1" face="sans-serif"><b>Bill Glaze
<a class="moz-txt-link-rfc2396E" href="mailto:billglaze@triad.rr.com"><billglaze@triad.rr.com></a></b></font>
<br>
<font size="1" face="sans-serif">Sent by:
<a class="moz-txt-link-abbreviated" href="mailto:discussion-request@nsrca.org">discussion-request@nsrca.org</a></font>
<p><font size="1" face="sans-serif">02/25/2004 01:29 PM</font>
<br>
<font size="1" face="sans-serif">Please respond to discussion</font>
<br>
</p>
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<td><font size="1" face="Arial"> </font>
<br>
<font size="1" face="sans-serif"> To:
<a class="moz-txt-link-abbreviated" href="mailto:discussion@nsrca.org">discussion@nsrca.org</a></font>
<br>
<font size="1" face="sans-serif"> cc: </font>
<br>
<font size="1" face="sans-serif"> Subject: Re:
receiver antenna placement</font></td>
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<br>
<br>
<font size="3" face="Times New Roman">Earl:<br>
I find that extremely interesting. The only radio I've had to run a
bonding wire with was my first one, a Babcock 3 channel ca. 1954. They
wanted everything bonded, from the rudder control wire, rudder/throttle
exscapements, servo case, etc.<br>
up to and including the engine. Every piece of metal on the airplane,
including the landing gear. What a pain! It was, of course, AM.<br>
<br>
Bill Glaze<br>
</font><font size="3" color="blue" face="Times New Roman"><u><br>
</u></font><a href="mailto:EHaury@aol.com"><font size="3" color="blue"
face="Times New Roman"><u>EHaury@aol.com</u></font></a><font size="3"
face="Times New Roman"> wrote:</font>
<br>
<font size="3" face="Times New Roman">Wayne</font>
<br>
<font size="3" face="Times New Roman"> </font>
<br>
<font size="3" face="Times New Roman">I've no experience with the
full carbon fuse - antenna issue. However, a few years ago I
experienced all sorts of range / glitching problems in an airplane that
had metallic paint, metal cables and other potential points of metal -
metal contacts (landing gear, landing gear door mechanisms, etc.)
Running the antenna through a wing helped a bunch, as it moved the
antenna away from noise generators. The real fix was to wire all metal
objects together with a "ground wire" that was connected to the
negative battery lead. Antenna then worked fine inside the fuse. All
this was with an AM receiver on 6-meters. </font>
<br>
<font size="3" face="Times New Roman"> </font>
<br>
<font size="3" face="Times New Roman">A similar experience occurred
with a different airplane that had a small fuselage and a lot of servo
leads near a good portion of the antenna, range was nonexistent until
moving the antenna to the wing. In this case the receiver was single
conversion FM on 6-meters.</font>
<br>
<font size="3" face="Times New Roman"> </font>
<br>
<font size="3" face="Times New Roman">My conclusions were that the
metallic paint is not a problem, metal to metal generated noise is (at
lease with AM), and antenna - servo lead proximity can be. </font>
<br>
<font size="3" face="Times New Roman"> </font>
<br>
<font size="3" face="Times New Roman">I've not had any problems with
dual-conversion FM on 6-meters with the antenna inside or outside the
fuse, although I maintain a couple of inches separation between servo
leads - cables and the antenna. </font>
<br>
<font size="3" face="Times New Roman"> </font>
<br>
<font size="3" face="Times New Roman">Current flights with the
Partner haven't demonstrated any issues with the antenna inside the
Kevlar rear of the fuse (as expected), although I've flown head on
trimming stuff that has put the carbon front of the fuse between the
antennae.</font>
<br>
<font size="3" face="Times New Roman"> </font>
<br>
<font size="3" face="Times New Roman">Earl</font>
<br>
<br>
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