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<DIV><FONT face=Arial size=2>The antenna gain is less than 1 dbd. The last "d"
means as compared to a reference dipole. If needed, I will review an antenna
book for the relationship to a "dbi" which is isotropic.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>The polarization is not consistent since a hand
held whip antenna less than a quarter wave is being used.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>The ground to air range is so low that the systems
can operate two miles apart without interfering with each other. Since all of
the equipment is handheld and battery powered, no one is especially interested
in using the maximum legal power level.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>BTW, IMHO, their vigilance in the matter of nearby
radio transmissions is commendable in these unsettled time.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV>John Ferrell <BR><A
href="http://DixieNC.US">http://DixieNC.US</A><BR></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=billglaze@triad.rr.com href="mailto:billglaze@triad.rr.com">Bill
Glaze</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, April 11, 2005 8:35
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Transmitter power
questions.....</DIV>
<DIV><FONT face=Arial size=2></FONT><FONT face=Arial size=2></FONT><BR></DIV>I
can answer a few:<BR>Transmitter power: 1 watt maximum. Actual,
really about 200 milliwatts<BR>Transmitter radius is difficult, because you
need to have an effective Field Strength Meter, but I have successfully
operated an airplane's controls at 1.1 miles, (line of sight) but I didn't
intend to fly; I couldn't even have seen the airplane.<BR>Antenna used:
Vertical Whip (Normally; that's what's supplied)<BR>Antenna gain; I don't
really know the answer to that one.<BR>Polarization: Vertical
(which is normal form a whip antenna.)<BR><BR>bravo52 wrote:<BR>
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<DIV><FONT face=Arial size=2>Hey Guys, </FONT></DIV>
<DIV><FONT face=Arial size=2> I am working on a project to get RC on
my Air Force Base and they have a few questions........ Can anybody
answer these questions for me given a standard Futaba or JR radio?
</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=+0>
<DIV><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'"><FONT
face=Arial size=2>1. What is the transmitter power? </FONT></SPAN></DIV>
<DIV><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'"><FONT
face=Arial size=2>2. What is the radius the transmitter will operate
effectively? Consider miles not Line-of-sight. (I guess that depends on
#1)</FONT></SPAN></DIV>
<DIV><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'"><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'"><FONT size=2><FONT
face=Arial>3. <SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'"><FONT face=Arial
size=2>What type of transmit antenna will be used, e.g., parabolic, whip,
telescoping single pole,
ect</FONT>?</SPAN></FONT></FONT></SPAN></SPAN></DIV>
<DIV><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'"><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'"><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'"><FONT size=2><FONT
face=Arial>4. <SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'"><FONT face=Arial
size=2>What is the transmitter antenna gain</FONT>?
</SPAN></FONT></FONT></SPAN></SPAN></SPAN></DIV>
<DIV><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'"><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'"><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'"><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'"><FONT size=2><FONT
face=Arial>5. <SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'"><FONT face=Arial
size=2>How is the transmit antenna polarized, e.g., horizontal, vertical,
etc</FONT>.?
</SPAN></FONT></FONT></SPAN></SPAN></SPAN></SPAN></DIV></FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>TAI</FONT></DIV>
<DIV><FONT face=Arial size=2>v/r</FONT></DIV>
<DIV><FONT face=Arial size=2>Jerry L.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>P.S. I tried to call Tony at RS but he left
early...............hmmm.......was he at the
field????</FONT></DIV></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>