FIRST? SINGLE SIDEBAND

[Scott Johnson]

------the EC, RC and some KC-135 aircraft do have longwires, the probes do
not load below about 6.5 MHz.  The KC-135 is capable of .91 mach, and we
don't seem to have much trouble with the longwire, never experienced a
failure in my 17 years on 135's, although C-130s sometimes break longwires
on assault landings. Hard to believe, but the only problem with longwires on
KC-135's is a resonance at pattern speeds that makes a racket in the
vicinity of the galley (where the coupler and mast are situated).

Scott
----- Original Message -----
From: "Tom Clarke" <fclarke at EROLS.COM>
To: <BOATANCHORS at LISTSERV.TEMPE.GOV>
Sent: Wednesday, January 14, 2004 8:01 PM
Subject: Re: FIRST? SINGLE SIDEBAND


> Training wire antennas are fairly rare today, generally on some military
> aircraft such as the E-6 (VLF) and E-2 Hawkeye.  Fixed wires are used on
> slower, prop type aircraft, where increased drag is not a consideration.
>
> HF antennas on jet aircraft are often probe type or slot types that do not
> cause additional drag.  Wires are not practical.  If you see and old 707
> check the top of the vertical stab and you will see a probe extending
> forward, this is an HF antenna.
>
> 73 de Tom/W4OKW
> --------------------------snip-------------------------
>
> Where do they keep the antenna on airplanes working HF?  Is it trailed out
> the back of the aircraft.
>
> I never see an HF antenna on commercial jets parked on airport tarmacks.
>
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