[Milsurplus] AN-104

[Jack Antonio]

I was looking for another manual tonight
and came across AF manual 52-19, "Antenna Systems"

With the recent interest in the AN-104 and what makes
it broadband, I looked to see if the manual had any
information on the antenna.

On page 147 it describes the "Stub Mast" antenna, and
although it doesn't call it by name, the drawing
sure looks like an AN-104.

What the manual describes is nothing special. A
wooden rib, with a metal sheath, with a lead from
the coax center conductor to the sheath, with the coax
shield going to the skin of the aircraft.  It goes on to
say the radiation resistance is approximately 50 ohms
so no matching section is necessary, and for a resonance
at 128 mc, the antenna can be used from 100 to 156 mc.

Now it would be interesting to know if this is a
simplified description, or an accurate representation
of the insides of the AN-104.

Jack Antonio WA7DIA
scr287 at sbcglobal.net