Hi, Mike Well, I don't remember just where I got the plans for mine, but it worked great. The T-19 was the 3-4 MHz Navy version, in a black wrinkle finish enclosure. Those were amazing radios! Amazing both electrically and mechanically! I guess they were used in the F6F Hellcats or some of the contemporary Navy aircraft or fighter planes. I saw one that bounced off the bed of a pickup truck onto a blacktop highway once shattering the tubes. When the tubes were replaced, it worked fine, and thd dial calibration hadn't shifted more than a kilocycle or so!! I would have been in junior high when I built mine. I was first licensed as KN4OTV I February 1957, about a month after my 13th birthday! Amazing what they were able to get out of 4 tubes (and one of those was the "magic eye" tube used in the crystal dial calibrator)! Interesting time for s kids whose dads served in WW II. My dad was in the Navy in the Pacific on the aircraft carrier Lexington, CV-16.
73, Charlie, K4OTV -----Original Message----- From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Mike Waters Sent: Saturday, January 18, 2014 7:10 PM To: Charlie Cunningham Cc: topband Subject: Re: Topband: Nostalgic "openings" I built EXACTLY the same thing when I was in high school (or maybe junior high) ! I think the plans for that DSB arrangement were in an old CQ magazine. 73, Mike www.w0btu.com On Sat, Jan 18, 2014 at 2:41 PM, Charlie Cunningham < charlie-cunning...@nc.rr.com> wrote: > The first "sideband" rig I ever had -back in the 1950s was a T-19 (3-4 > Mc) > ARC-5 in which I converted the 1625 finals to a high-level balanced > modulator by connecting the balanced grid tank to apply RF in > push-pull to the control grids and applied push-pull audio transformer > coupled to the screen grids and left the plates in parallel. > _________________ Topband Reflector Archives - http://www.contesting.com/_topband _________________ Topband Reflector Archives - http://www.contesting.com/_topband