a complete mobile/portable RTTY station which consisted of a BC-610, a Hammarlund Super Pro receiver... All of this equipment was mounted in a van on the rear of a 2 1/2 ton truck. The truck towed a
Further to Ken's excellent comments below we add the following:1) During and shortly after World War 2 the original BC610A through the latest (till then) Model BC 610 E (which was a pre-war "Art-Deco
And a pair of 4-125 in push pull to modulate the 4-250. Probably 2-30 MHz. It also had a built-in VFO (I think they called it a "MO" master oscillator), which was a Collins type (perhaps Collins man
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Tue, 01 Sep 2009 09:11:46 -0600
I picked up an unknown to me Collins PTO last year at CSVHF. Turns out to be the PTO from a T368. A 70H9 made by Collins but with the model number written on the label by hand. Depends on bias and dr
Well, yes I know you can bias 833 to operate as a linear amp. I just don't know whether this particular unit had a setting for that. I got the impression that it was primarily a class C, CW or FSK un
I kept it simple and had a grounded grid amp with (3) 813's Also had another amp with (2) 813's Paul Gates, KD3JF -- Paul, KD3JF Glen Burnie, MD _______________________________________________ TenTec
BC 610 is that a Collins amp? I forget, thats been too many years ago. Did that have 2 833's? I never got to see the inside of one. Did it have a 4-1000 final or am I thinking about the Henry amp? No
I remember the TBK 15 and 17. The TBM, TAA, TAB xmtrs. Also the RAA receiver and others of course. The TAA was an old xmtr in 1942 but we did use it on 106 Kc at NAW occasionally. We never used the R
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Fri, 04 Sep 2009 20:24:09 -0600
Hallicrafters, essentially an HT-4 ruggedized. Film at: http://www.archive.org/details/VoiceofV1944 There are two parts. The main contributions from Collins in WW2 were the ARC-2 and ART-13. The ART-
...and those motor driven mechanical presets gave the radio its nickname, "The Coffee Grinder". It did NOT run quietly -- but when you were on a B-29, I guess 'noise' was relative. As a snot-nosed ki
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Sat, 05 Sep 2009 09:28:38 -0600
With the engines running the ART-13 didn't change the noise level at all, except in receivers. That era military aircraft didn't consider the hearing of crew members was crucial to the mission. Last
Group, sorry for the OT of the OT...looks like this thread "migrated" a bit. <grin> No experience with the B-1, but I was a radio man in the Air National Guard and one of our duties was called "last
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Sun, 06 Sep 2009 20:21:01 -0600
The B-1B was about that loud with the afterburners kicked in. Congrats to your son. I graduated, not with honors, but I took too many advanced and honors sequence courses and fell in amongst the real