[Milsurplus] Re: [ARC5] Signal Corps Info Golden Nuggets.

[Hue Miller]

----- Original Message -----
From: Richard H. Brown Jr. <cbrown@mfi.net>

> Guys, you're missing the point, Braodcast doens't necessarily mean
> broadcast's like today with mega watts, the power of *commercial*
stations
> were a lot less in those days and military *broadcasts" doesn't
mean the same
> thing as a commercial broadcast.

> Look at the U-Boat Enigma transmissions from European sites.
Transmitters in
> France and Germany and Norway? broadcast daily schedules of info to
all
> U-boats in cw. *besides* the operational back and forth chat of
U-Boat's in
> the field to Doernitz back in U-Boat HQ.
>
> Except for *flagship* transmitter sites of mil stations like WAR
(Army, in
> USA) and Navy HQ, and British sta's. Empire chain? only other high
power
> sta's were taken over for operational needs or in the case of
propaganda like
> BBC or Deutches Welle, were gov't owned/operated high  power sites.

Richard, forgive me, but i don't get your point.
There were many broadcast stations with 10s of kw power by this
date. Many military point to point stations were in the range 1 kw
to 10 kw at least. But i'm wondering how this relates to LF / MF
transmitting equipment in aircraft.
There was jamming of tactical communications in WW2, but on
aircraft, at least US aircraft, this seems only to have been special
equipment, not just additional frequency ranges to already existing
equipment.
Or, am i missing some point?

BTW, one of the contributory failures in the chain that led to the
loss
of Amelia Earhart was her choosing to delete the reel (as in reel-out
wire) antenna that made possible transmitting on 600 kHz. No reel
antenna, no LF transmit, as the fixed onboard aerial was just too
small
a fraction of a wavelength at 600 kHz. So - she could not transmit to
the USCG ship Itasca on this frequency, and have them take a bearing
on her signal. The Itasca could not df at the HF frequencies of her
transmitter.
Regards, Hue Miller