From: military-radio-guy Full-Name: Dennis R Starks To: military radio collectors#1, military radio collectors#2 Fcc: Sent Date: Mon, 27 Oct 1997 17:33:29 Subject: Military Collector Group Post, Oct.27/97 Message-ID: <19971027.173220.4423.2.military-radio-guy@juno.com> X-Status: Sent X-Mailer: Juno 1.38 Military Collector Group Post, Oct.27/97 Index: PRC-47 Help; NEED A TWO MAN SUB? FREE FREE! Pete's Inverter Transformer Ideas; Filement types? HUMOR; *************************************************** PRC-47 Help; Steve H. Has popped the power oscillator transistors in his PRC-47. He wishes to replace them with silicon types, anybody got any sugjestions? I put silicon replacements in for Q1 and Q2(replaced with MJ4502s), but they don't osillate properly. Assume that they aren't biased properly but don't know how to fix this. Assistance required please. Steve Hill VK4CZT 39 Banbury St. Carina. 4152. Brisbane. Australia. *************************************************** NEED A TWO MAN SUB? If anyone is interested, I can get a 2 man midget SEABAT submarine. Current owner wants $1,500.00 for it. Sounds like a good deal if you are into two man submarines. He thinks it is restorable. Great addition to your Vietnam era display. Also wanted is a Transmission/mast for a Vietnam era Huey H Model. Does not need to be airworthy. For a static display. If interested, contace me for details. Does any one have any 4" Muirhead D 118, a 50 to 1 vernier drive? I would like to find 2 of them. Anybody got a copy?101 Detachment by W.R. Peers. It is about the O.S.S.'s 101 Detachment which served behind the lines in Burma during WW II. Bill Howard THE WILLIAM L. HOWARD ORDNANCE TECHNICAL INTELLIGENCE MUSEUM e-mail wlhoward@gte.net Telephone AC 813 585-7756 ***************************************************** FREE FREE! Come get this stuff, I'm tier'd of stubbin my toes on it. Don't ask me to ship it, aint got time. Will load you up with a bunch of other shit layin around here. GE coffins, realy old, will work 6 meters FM, trans & receivers, 2 pair, exc cond. RA-62, AC supplies for ops of SCR-522, 2 avail RA-67, rectifiar unit, makes 110vac & dc for TTY equip, WW-II dated. SCR-522(BC-624 & BC-625), bunch of receivers & transmitters, variuos conditions. Dynomotors, shit pot full, no idea what they go to, don't care, no pickin through um, gotta take um all. 17L4;Collins VHF aircraft transmitter 51X-1D;Collins VHF aircraft receiver 51Y-3,Collins aircraft ADF receiver T-30/TRC-8;220-250mc,fm,trns BC-733;Aircraft Blind landing receiver.Ops 108.3-110.3mc AM,on 6 Xtal Control Channels.GD cond NCHKD ARN-21/RT-220;Use unknown,FR-GD cond. D-500SAN,AC voltage regulator,input 95-130v,output 110vac/400cps, PP-1398,28vdc pwr sup for ARR-39A,vg cond NCHKD. SA-281,Rotory inverter,24-30vdc/6-10amps to 125vac/450cps, CV-186/GRC,FSK converter for BC-610,by Hallicrafters.FR cond. IC/FCA-1M,shipboard audio amp,pair 6L6 output,FR cond. TYPE 105 mod 4A,Northern Radio FSK exiter keyer,3 xtal contr freqs 2- 32mc,2E26 output,w/type 10-3 mod 1 adapter for local or remote freq DR-5,as RL-39,wire spools, many of each. RL-159,feild wire spools,large for two man or vehicular deployment, TS-1588/AIC,Test Set Radio,use unknown,VG cond NCHKD, Pulse Generator,P/O 15C Radar Trainer,dated 1943,fr-gd cond Gonset GC-105,2 mtr AM,mobile or base transceiver,FR cond,NCHKD Hundreds of TTY manuals, no time to look through them. Hundreds of vintage Radio & TV manuals,Sylvania,Admiral,Zenith, God only knows what all. If your gonna come get this stuff so's you can haul it off & sell it, screw you! Don't bother commin. Dennis Starks; MILITARY RADIO COLLECTOR/HISTORIAN military-radio-guy@juno.com *************************************************** Pete's Inverter Transformer Ideas; Filement types? Dennis, Here are some thoughts on inverter transformers: It may actually be needed to use a high-freq osc to keep the size down, but *if* size is not a big problem, then consider this: - Run at 60 to 100 Hz or so, and use a backwards filament xformer. - The low freq should reduce RFI problems a lot. - A variety of xformers are available anywhere. - At 4V in to an inverter, we can approximate this as being 2.8 V RMS. - Using a 6.3 V filament xformer, you would be pretty close to 90 V Peak on the other side. Pete ------------------------------------------------------------------------------------------- Pete, That has already been done & a note is included in a prior post about backwards transformers. The problem is not transformer size, its filtering needed at those low freqs, you need a bunch! Another big disadvantage to these is the single primary winding which will allow only a single output voltage. No problem with such things as a GRC-9 receiver which only needs a single 90 volt supply, but not real handy with others that need multiple voltages. The single voltage output can be supplanted with such things as resistive dividers, but these need be avoided at all cost. There are numerous reasons why. 500-1000cps needs very little filtering, higher freqs even less. Most 60cps transformers will run at much higher freqs. I have several power supplies made that are running between 500 & 1000cps using those little metal sheilded transformers robbed from Jap cordless phones & casset players. These often have multiple primary taps(110/220vac) that will produce 90/45 & 135/67.5 volts output when run backwards. True, suiteable filement transformers are available all over the place, but I'm a tight ass & prefure to get them for nothing. Also surplus vibrator transformers can be used that will operated at around 400cps & up. Marks G has perfected a couple of solid state designs that will effectively replace the old mechanical vibrators used with these transformers. Time has not allowed him to pursue this avenue much further or distribute this info. He seems to be stuck at present on his general purpose 12-24vdc inverter design & gettin it into simi production. A couple years ago I incurraged him to design a solid state multi-vibrator just for use with backwards transformers. One that would have adjusable freq, & would not need feedback(a big problem with transformers of this type). This would provide a simple inverter for the easiar jobs(such as a GRC-9 rec). This project too has been tabled. The current task at hand is to decide on a transformer design that will be as universal as possible so that Ralph H. might have them reproduced in small quantities for the group. Then I suppose there will be some debate on the type circuit used to feed these things. I personally like & use a pair of TIP-41's as a multi-vibrator with feed back supplied by a winding in the transformer. This circuit has proven to be very reliable, simple, & space conserving. A verity of different transistor types can be used. Ralph & Mark both lean toward these late model exotic IC's to perform the job. Though Mark insist that they use a minimum of discreet components, the parts count is still much higher than my TIP-41's. Dennis ******************************************************* HUMOR; Grant me the serenity to accept the things I cannot change; The courage to change the things I cannot accept; And the wisdom to hide the bodies of those people I had to kill today because they pissed me off. And also, help me to be careful of the toes I step on today as they may be connected to the ass that I might kiss tomorrow. ---------------------------------------------------------------------------------- BEER TROUBLESHOOTING FLOW CHART SYMPTOM: Beer unusually pale and tasteless. FAULT: Glass empty. ACTION: Get someone to buy you another beer. SYMPTOM: Beer tasteless, front of your shirt is wet. FAULT: Mouth not open, or glass applied to wrong part of face. ACTION: Retire to restroom, practice in mirror. SYMPTOM: Feet cold and wet. FAULT: Glass being held at incorrect angle. ACTION: Rotate glass so that open end points toward ceiling. SYMPTOM: Feet warm and wet. FAULT: Improper bladder control. ACTION: Stand next to nearest dog, complain about her house training. SYMPTOM: Floor blurred. FAULT: You are looking through bottom of empty glass. ACTION: Get someone to buy you another beer. SYMPTOM: Floor moving. FAULT: You are being carried out. ACTION: Find out if you are being taken to another bar. SYMPTOM: Opposite wall covered with fluorescent lights. FAULT: You have fallen over backward. ACTION: Have yourself lashed to bar. SYMPTOM: Mouth contains cigarette butts. FAULT: You have fallen forward. ACTION: See above. SYMPTOM: Room seems unusually dark. FAULT: Bar has closed. ACTION: Confirm home address with bartender. SYMPTOM: Taxi suddenly takes on colorful aspect and textures. FAULT: Beer consumption has exceeded personal limitations. ACTION: Cover mouth. ----------------------------------------------------------------------------------------- YOU ARE NO LONGER "COOL" WHEN ..... > > 1.You find yourself listening to talk radio. > 2.You daughter says she got pierced and you look at her ears. > 3.The pattern on your shorts and couch match. > 4.You fondly remember your powder blue leisure suit. > 5.Your wife buys a flannel nighty and you find that sexy > 6.You think Tragically Hip is when a middle-aged man gets a new > sports car, hair piece and a 20 year old girlfriend > 7.You criticize the kids of today for their satanic > suicide-inducing music, forgetting that you rocked to Alice Cooper > and > Black Sabbath. > 8.You call the police on a noisy party next door instead of > grabbing beer and joining it. > 9.You turn down free tickets to a rock concert because you have to > work the next day. > 10.When grass is something that you cut, not cultivate. > 11.When jogging is something you do to your memory. > 12.Rocking all night means dozing off in your rocking chair. > 13.Sex becomes "All that foolishness". > 14.Getting a little action means your prune juice is working. > 15.All the cars behind you turn on their headlights. > 16.You remember the "Rolling Stones" as a rock group not a > corporation. > 17.You bought your first car for the same price you paid for your > son's new running shoes. > 18.You actually ASK for your father's advice. > 19.You don't know how to operate a fax machine. > 20. When someone mentions SURFING you picture waves and a surf > board ------------------------------------------------------------------------------ The Male Stages of Life AGE DRINK 17 beer 25 beer 35 vodka 48 double vodka 66 Maalox SEDUCTION LINE 17 My parents are away for the weekend. 25 My girlfriend is away for the weekend. 35 My fiancee is away for the weekend. 48 My wife is away for the weekend. 66 My second wife is dead. FAVORITE SPORT 17 sex 25 sex 35 sex 48 sex 66 napping DRUG 17 pot 25 coke 35 really good coke 48 power 66 prozac DEFINITION OF A SUCCESSFUL DATE 17 "tongue" 25 "breakfast" 35 "She didn't set back my therapy" 48 "I didn't have to meet her kids" 66 "Got home alive" FAVORITE FANTASY 17 getting to third 25 airplane sex 35 menage a trois 48 taking the company public 66 Swiss maid/Nazi love slave HOUSE PET 17 roaches 25 stoned-out college roommate 35 Irish setter 48 children from his first marriage 66 Barbi WHAT'S THE IDEAL AGE TO GET MARRIED? 17 25 25 35 35 48 48 66 66 17 IDEAL DATE 17 triple Stephen King feature at a drive in 25 "Split the check before we go back to my place" 35 "Just come over" 48 "Just come over and cook" 66 sex in the company jet on the way to Vegas .................................................................... ... The Female Stages Of Life AGE DRINK 17 wine coolers 25 white wine 35 red wine 48 Dom Perignon 66 shot of Jack with an Ensure chaser EXCUSES FOR REFUSING DATES 17 need to wash my hair 25 need to wash & condition my hair 35 need to color my hair 48 need to have Francois color my hair 66 need to have Francois color my wig FAVORITE SPORT 17 shopping 25 shopping 35 shopping 48 shopping 66 shopping DRUG 17 shopping 25 shopping 35 shopping 48 shopping 66 shopping DEFINITION OF A SUCCESSFUL DATE 17 "Burger King" 25 "Free meal" 35 "A diamond" 48 "A bigger diamond" 66 "Home alone" FAVORITE FANTASY 17 tall, dark and handsome 25 tall, dark and handsome with money 35 tall, dark and handsome with money and a brain 48 a man with hair 66 a man HOUSE PET 17 Muffy the cat 25 Unemployed boyfriend and Muffy the cat 35 Irish setter and Muffy the cat 48 Children from his first marriage and Muffy the cat 66 Retired husband dabbles in taxidermy, stuff Muffy the cat WHAT'S THE IDEAL AGE TO GET MARRIED? 17 17 25 25 35 35 48 48 66 66 IDEAL DATE 17 He offers to pay 25 He pays 35 He cooks breakfast the next morning 48 He cooks breakfast the next morning for the kids 66 He can chew breakfast When finished reading use browser back button or go to http://www.prc68.com/MCGP/MCGP.html