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For you smart audiophiles...
Short Wave Sportfishing wrote:
On Sat, 29 Dec 2007 16:18:40 -0500, "Eisboch" wrote: "Larry" wrote in message ... "Eisboch" wrote in : Those DE's had three old AN/FRT-39 transmitters plus a pair of newer and smaller transmitters with auto tuning that I can't remember the name of. UCC something, I think. AN/URT-23(A). The transmitter was a low powered lookalike for the R-1051 receiver and had a 400-cycle, 3-phase 480VAC powered pair of 4CX1500 ceramic tetrodes feeding a giant turrent of 1 Mhz tuning circuits that was motor driven. Typical military operation, 5000 watts in, 500 watts out. It was tied to the tuning in the little transmitter. Navy and CG is still using it. I got paid big money from a Navy Benny Sugg I submitted. The 400 Hz cooling fan in the AM-2123 amp sounded like a 747 with all 4 engines wide open for heavy takeoff just deafening radiomen. CG had a solution with this little plastic right-angled cover that had soft foam to muffle the sound inside it some contractor got rich off of. My Sugg was for the Navy to buy it, making Radio LOTS quieter. NAVSEA agreed as the solution was not too technical for their bureaucrats to understand. I don't remember what the check was, but it was thousands...(c; The first DE I was on, USS VanVoorhis (DE-2028) also became a test bed for "Sat Nav", the early version of GPS. I think this would have been in 1969 or '70, but my brain doesn't remember all the details any more. That would have been Omega, I believe, a GPS predecessor. It worked, but GPS was much improved. I was on Everglades from 66 to 69, finally transferred off to MINELANT, CHARLESTON to start a new Qualification Lab with one other cal tech at Mine Force Support Group, Atlantic on the S end of the Navy Base Charleston by the MINELANT HQ and MSO piers. MSO HF transmitters had a "grounditis" problem on the wooden ships. Everything, of course, had to have these huge ground straps to all metal rails and anything else they could ground tied to the bilges. They were GREAT HF antennas! One sailor was nearly killed when someone keyed the URC-32's 500W HF RTTY mode because he was between two differently- grounded handrails. At this frequency, one handrail had several hundred volts DIFFERENCE with the other one because of the different ground paths making HF antennas, open on the top as far as HF was concerned. IT fried his hands! The ham in the shop, I was called on to help figure out why. After looking at the stupid grounding system meant to keep 60 Hz grounded, it was easy to spot. I added an RF choke across a gap in each ground strap right at the handrail and it vanished.....another benny sugg submitted...another fine check of the taxpayer's money quickly cashed... (c; They sent me to the MED on an MSO just to get rid of me for a while. Chow lines are short on MSOs offshore! They only have a 6-7' draft, you know! No stabilizing mainsail, either! God that thing could get rid of diesel fuel quickly in those twin Packard monsters.... I think I know you. Or someone just like you. Us common, lowly ET types don't quickly forget the Navy's "SuperTechs". Sounds like Larry was the Navy's go to guy for tough problems. How else would he had survived in the military. |
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