[ARC5] Using SCR-274N

[Jay Coward]

Years ago, maybe mid seventies, I received McMurdo Station Antarctica from Martha's Vineyard, Mass. with a BC-455 late one winter night.
That was cool.
 Jay KE6PPF



-----Original Message-----
From: Bill Cromwell <wrcromwell at gmail.com>
To: arc5 <arc5 at mailman.qth.net>
Sent: Thu, Mar 28, 2013 1:07 pm
Subject: Re: [ARC5] Using SCR-274N


On Thu, 2013-03-28 at 08:32 -0700, Bob Macklin wrote:
 How do you use them?
 
 This stuff was intended for short range communication  (not DX) and not 
 under crowed ham band conditions.
 
 They were really made for voice operation, not CW.
 
 Bob Macklin
 K5MYJ
 Seattle, Wa.
 "Real Radios Glow In The Dark"

i Bob,
There have already been some comments about how the radios are used. I
nly use the MF and HF command receivers (no "ARC-5" transmitters). I'm
ot particularly fussy whether they were ordered by the Army or the Navy
ut I do have an acquired bias in favor of Navy and I prefer them
ressed in black.
My R-23 and BC-453 radios aren't too short on the range. I have picked
p an NDB transmitter at 1025 miles and one of the hams with an
xperimental license for 600 meters with a very few watts (about 3) ERP
t almost 1200 miles. Of course my antenna won't really fit a B-17! At
40 feet I might find a way to wind it around here and there and force
t to fit. I have received 40 meter CW from the west coast in here
ithout too much trouble (great lakes neighborhood) using a plain
ommand receiver. Not DXCC. Not short range either.
It's the 21st century. Older scaf filters and later digital processing
without modding the radios) does a lot to sort things out after the
adio grabs the signals from the ether and presents them at the output
erminal. We also have that grey filter between our ears that can deal
ith a lot.
The 80 and 40 meter radios have a wider IF but the modern filters really
ake a difference. There are a lot of add on tricks that I will be
rying but all of them are applied from outside the radios. A couple of
hem - like a Q-multiplier, need access to the internal wiring but still
o butchery.
Finally, we don't have to be chasing DX wallpaper every time we turn the
adio on. At least..some of us don't.
73,
Bill  KU8H
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