[Hallicrafters] Hallicrafters Digest, Vol 123, Issue 8

[Mike Everette]

Pre-WW2, the US 5 meter band was 56-60 mc.  After the war, the allocation was shifted down to 50-54 mc.  I don't believe there was any post-war operation allowed on 5 meters.  The pre-war 2-1/2 meter band was 112-116 mc, shifted up to 2 meters at 144-148.  2-1/2 meters was the first ham band released for post-war US operation in October 1945, because the War Emergency Radio Service (WERS) had been active there during the war.  But it wasn't long (circa mid 1946) before replacement by 2 meters to make way for VHF air navigation aids (VOR, etc) in the 108-118 mc band.

73

Mike
WA4DLF

--------------------------------------------
On Wed, 4/9/14, bcarling at cfl.rr.com <bcarling at cfl.rr.com> wrote:

 Subject: Re: [Hallicrafters] Hallicrafters Digest, Vol 123, Issue 8
 To: hallicrafters at mailman.qth.net, "Charlie T, K3ICH" <pincon at erols.com>
 Date: Wednesday, April 9, 2014, 8:29 AM
 
 Wasn't there a 5 metre amateur band
 here in USA?
 
 A lot of other countries had (and still have) a 4 metre
 amateur band at 70 MHz.
 
 Brian AF4K (Ex-G3XLQ)
 
 On 8 Apr 2014 at 23:14, Charlie T, K3ICH wrote:
 
 > Actually, the original FM band was 42 to 50 MHz, not
 the current 6M band on 
 > 50 to 54 MHz.
 > 
 > Here's a good link for some more info: 
 > http://tenwatts.blogspot.com/2011/03/42-50-mhz-other-fm-band.html
 > 
 > (Email me directly if the link info is stripped
 off:  pincon at erols dot 
 > com.)
 > 
 > 73, Charlie k3ICH
 > 
 > 
 > ----- Original Message ----- 
 > From: "Richard Knoppow" <1oldlens1 at ix.netcom.com>
 > To: <radio at daileyservices.com>;
 <hallicrafters at mailman.qth.net>
 > Sent: Tuesday, April 08, 2014 10:31 PM
 > Subject: Re: [Hallicrafters] Hallicrafters Digest, Vol
 123, Issue 8
 > 
 > 
 > >
 > > ----- Original Message ----- 
 > > From: <radio at daileyservices.com>
 > > To: <hallicrafters at mailman.qth.net>
 > > Sent: Tuesday, April 08, 2014 9:57 AM
 > > Subject: [Hallicrafters] Hallicrafters Digest, Vol
 123, Issue 8
 > >
 > >
 > >> David Sarnoff also screwed over Edwin
 Armstrong.  That story is 
 > >> legendary, but it's why we have the 88-108
 Bcst FM band today, instead of 
 > >> the lower set of frequencies that the
 Armstrong gear was made for - He 
 > >> had transmitters, receivers, and all the
 control equipment ready to go, 
 > >> and Sarnoff got the FCC to put HIM in their
 pocket - Armstrong ultimately 
 > >> put on his coat and hat, and walked out of a
 window.
 > >>
 > >> Tom - W0EAJ
 > >
 > >     The feud and patent
 litigation between Armstong and RCA is very well 
 > > documented. Armstrong had problems with patents
 other than FM such as the 
 > > super regenerator.  There were good reasons
 for changing from the 50-54 
 > > mhz band to the upper one, for instance there are
 about four times the 
 > > number of channels available.  Also 50 mhz
 has problems with long distance 
 > > co-channel interferrence. The problems are not as
 simple as a personal 
 > > vendetta although that certainly existed. 
 Curiously Armstrong and Sarnoff 
 > > were good friends before their egos got in the
 way. Armstrong's wife 
 > > persisted in the patent fight after his suicide
 and eventually prevailed. 
 > > She had been Sarnoff's personal secretary before
 marying Armstrong.
 > >    The reason that Westinghouse was
 invited to become a part of RCA after 
 > > its original formation was that they held
 important patents assigned to 
 > > them by Armstrong.
 > >
 > >
 > > --
 > > Richard Knoppow
 > > Los Angeles
 > > WB6KBL
 > > dickburk at ix.netcom.com
 > >
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