[BC] 25 Hz AC Transmitter

[r j carpenter]

From: DHultsman5 at aol.com says:

Quotes me:
 >
 > The  transmitter we got from the back room at WASH when we built WHFS
 > 102.3 had  a 25 Hz power supply.  The story was that it had been used
 > in propagation tests in the 25 Hz part of upper New York state. The
 > story continued that it was given / lent by Armstrong to Ev Dillard to
 > get WASH on the air from their then-new Wheaton, MD, site.

That's Armstrong as in Maj. Edwin Armstrong.  Ours was an experimental 
rig. Armstrong never made equipment for sale.

REL (Radio Engineering Labs) appeared to be the "appointed" / "official" 
FM manufacturer.  You'll find lots about REL along with their ads in 
Milton Sleeper's old "FM" and "FM & Television" magazine.  They 
eventually went into military contracting when FM stations were dropping 
like flies and then.....

The Rural Radio Network was mostly equipped with GE gear.  They used REL 
receivers for off-the-air relay.  Things must have sounded pretty ratty 
after 3 or 4 hops, all analog of course.  I've scanned the "FM" magazine 
articles about the RRN, but I understand it was far too large for 
Barry's site.  I don't know where the files are now. RRN was created by 
GLF (Grange League Federation) farmers' lobby & supply outfit. The 
stores sold their own private-brand FM/AM radios and two-bay receiving 
turnstile antennas. A friend who went to RPI in Troy, NY, had one of 
those antennas on his house here in the DC area in the mid-1950s.


bob carpenter
w3otc since 1948