[Lowfer] Who pioneered QRSS?

[Ed Phillips]

Some time back I read a copy of RCA Review, probably from the late
1950's, which. described a low-power (1 watt?) "spy" HF communication
system with a bank of extremely narrowband (<1 Hz as I recall) crystal
filters in the receiver to improve SNR.  Presumably the desired signal
would be in one of them; the transmitter crystal oscillator was
temperature controlled by placing it under the "spy's" armpit.  [Not a
joke; that's what the article said!] As I recall the keying rate was a
lot less than 1 character/second which should qualify at least as QRS,
if not quite "super slow".  The article reported results of
transcontinental communication using antennas which included, in at
least one case, a tree with a nail driven into it.

	Unfortunately I trashed all of my RCA Reviews when I moved into this
house in 1970 (can't keep everything and I already had two each of
same), so can't look for the reference and don't know of any library
around here which has archived copies.

Ed