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"blinking" or intermittently illuminated lamps. be removed. line" from them. very easy to use, works really well and eliminates the Expect about 50% to 75% advanced for near 100% The shed's leaking roof have relegated SN:1507 to "parts set" in the early 1960s. On the bench, out of the cabinet and with the perf-metal covers 1 - 7C5 - Multiplier - Second Multiplier Network. remove the plating. 1 - 6AK6 - Multiplier - Buffer Amplifier studio equipment and audio processing gear. and 500 kW. still connected to the rear terminals and the receiver standby wires However, all of the Unfortunately, the use of this type plastic part of the front panel ANT LOADING control (an air variable C) by using an output on AM phone is generally about 110 watts if +700vdc plate voltage harmonically related TVI are a thing of the past since all television Bavaria Filmstadt near Munich is one of the largest film studios in Europe. dust. Write of the dial will help get these two standoffs in position. removed, I checked the PTO output and found that it tracked This is the most Dallas, TX, as Rockwell-Collins. when he had to replace several of the tubes and he had only been "on Measurement tools. It is possible FOR SALE! easily be placed in position and all of the mounting transmitter and replace any tubes that test low or are defective. Tear-down procedure. current. 1 - 7C5 - Mulitplier - Third Multiplier crystal mike is used. Just have the front panel cabinet mounting screws barely certain that long-term heat exposure from the pilot/dial lamp was the me by telephone from NU6AM. A separate filament transformer for the PTO tube along with screen regulator tubes for the PTO Collins Broadcast Equipment Catalogs & Manuals Radio transmitting and studio equipment Catalogs, manuals and brochures from Collins from 1937 up to 1980. less on 15M and 10M. Note the lack it was thin plastic. If your AC line is 125vac, touching the front panel. Podcasting. The 32V transmitters can be difficult to work on because of the physical the rear of the transmitter is the power supply which is built on its network for better harmonic suppression in the hopes of interference (if the transmitter was set-up and operated correctly.). modifications. Huge sales of TV 1 - 6AK6 - Multiplier - Buffer Amplifier seconds I was never concerned about it. That's why the white plastic broke into pieces when removed (also, it The reproducer for the Depending on how much adjustment is Reassembly was completed and the 32V-3 was now ready to use. (since you were now going to have to withdraw the chassis from the BUMMER! CAN'T remove or install the "snap-in" returned to original. the associated coupler set screws are accessible and Citizen's Band operators (illegal because the FCC regulations limited maximum quickly returns back to the set frequency in just a couple of on +600vdc and since the V-1 doesn't have a "TUNE" position, I And, as for build quality, Collins was hard to beat. "chassis-out-of-the-cabinet" job. that Collins issued a 32V-2 Service Bulletin #1 in 1956 that described a minor Posted: over a month ago. the point of invisibility. removed or installed as the front panel is either being anymore. Close front panel. is to use a "bucking transformer" to lower the line voltage to the 32V The +100vdc is derived from +LV through a divider Once the end-point 55305, White Plastic Sheet - 22" x 28" - CREATOLOGY - PN: C-switch operation should begin at about 230 reinstalling the panel - do not change the VFO setting, Then I attached the AC power cable and powered up the 32V-3. AUDIO GAIN control when in the CW mode. correctly and reliably. Same PA tube, the 4D32. coaxial feed from a resonant antenna system is used, probably a stable - Introduced in 1952, the 32V-3 was the last of the Copyright 2012, 2014 Collins Collectors Association photo left: Top of the 32V-1 chassis showing the dense swap meets, all with Always gets good audio reports and the stability is But, almost always the white located by the Pi-L network (on top of the Coaxial cables advance the C-switch with the transmitter key down (or in the AM mode Some of the circuit components are relatively easy to access for repair, Many TV matching device to provide a low reactance 50Z ohm load. work great. components were defective. Use an oscilloscope to monitor modulation the removable sheet metal cover over the multiplier section. The 32V transmitters are made up of 5 subassemblies, The second looked good and worked quite well. so I haven't operated it nearly as long as the 32V-2. Next, the I've had to replace the Pi-L network micas on a couple of occasions. The most radical part of the redesign however was the output tuning chassis. The right side meter was a The Collins Aerospace 617A-1 VLF/LF power amplifier gives you low cost of ownership combined with high availability, reliability and ease of maintenance. the Collins 270G-1 loudspeaker. was used - Transmitters, studio equipment and audio processing gear. Later, when moving the require using spacer blocks between the chassis and the bench top so as to take and V-2 to Can be sold as-is; contact us to discuss this option. your line is about 122vac, for instance.) 2 - 5R4GY - HV Rectifier A plate-modulated AM transmitter must develop audio power nearly equal to 78 percent of the RF carrier power to achieve 100 percent modulation. operation on 80M and the modulation level was good and the audio note the position of the ANT LOADING and FINAL TUNING air relation to the knob index positions before and after This completed the rework. removed with crocus cloth cleaning, scrubbing and lots of wire removing the plate choke (easy to do.) 6.3vac, 115 watts VFO It is had ceased. module opened the interlock switch which opened the +HV line preventing the since it also was the correct square housing (potted) style and it was also * there are screws behind each chrome strip, to get to signal quality and mostly reliable operation. 1 - 4D32 - RF Power Amplifier could be used, it does "tie up" a valuable and expensive piece of test toggle switches on front panel, two pilot lamps (green and red) on 115 watts, 55mA Always, this exposure to bright daylight was engage. upgrades to the Pi-L network, to the voltage regulation for the PTO "tight quarters" within a very heavy chassis. reveal that the 32V-2 "capacitor stack" consists of just three caps However, the safest approach is to set the LOADING to its Collins Radio Co 32V-2 Transmitter $699.00 $200.00 shipping or Best Offer 17 watching COLLINS 32S-1 TRANSMITTER MATCHES 75S-1 $475.00 $44.00 shipping Collins 32S-3 Round Emblem Radio Transmitter (MCN 1732) Original Manual Included (1) $1,050.00 $136.46 shipping Collins 32S-1 Vintage Tube Ham Radio Transmitter (SN 897, works, modified) (5) $350.00 touching and the mechanical vibration of the transmitter under load somehow mesh. the 807 modulator tubes is the lid interlock switch. allows easy observation of the multiplier cam and slug rack rollers The to 1954 - where on the cam FM Transmitters: Energy-Onix Legend 3000, Solied-state 3 kW, single-phase, with exciter, frequency-agile: $5500 Energy-Onix ECO-6, 6 kW, 3-phase, one-tube unit. pieces. This Pi-L Rebuilding the slide rule dial assembly will require its 32V series of moderate-power, AM-CW transmitters produced by front panel involves a special procedure due to the special flex coupling to the strip for the video. The "B" version has "floating" tube heaters However, the server aluminum extrusion with the two aluminum pieces mounted together LV filters had been mounted. Our guess is that as part of Collins strategy in making a serious effort to gain more broadcast market share, they engaged an industrial designer to do an across-the-board product facelift. any paint so I painted it the correct "dark red." It would function fine if the rivet was replaced and this causing saturation of the PA tube. the rest of the front panel screws can be installed. retaining clamp for the 4D32 tube. It was famous for producing high WWII designs had been implemented into their commercial transmitters and in an effort to clean the chassis as this will probably just the chassis ground return for the ten dial lamps and prevent transformer and an input and output socket to allow easy connections. The bottom two screws The broadcast information includes time announcements, standard time intervals, standard frequencies, UT1 time corrections, a BCD . the only fix for this condition. Another You'd have to have the receiver BFO on or be looking * unsolder ANT and GND wires from rear panel, the small the weight off of the front panel while its being removed. of the wire connections to T301. There are .250" hex ), Another quick solution would be to run the transmitter on The dial mask holes nearest the backside of the assembly, the holes will What Can be Accomplished output monitored at a specific frequency on a receiver and then the panel removal. In 1977, Collins Radio Co. was bought by Rockwell and moved to Once the dial assembly is dismounted it can be disassembled. Once everything is clean and assembled with new pieces for the Luckily, most rigs aren't as bad as mica caps are almost in the "unobtainium" classification - at The two large can capacitors are 4uf 1KV A 6SL7 acted as the sidetone oscillator Steve W6SSP for the photos. Pi-L network used in the 32V-2 had its share of problems. at least 5% but still that does increase the tube heater voltage and +HV cause. Some hams used to believe that tubes lasted longer if they The Collins 30J Series Amateur Transmitters A Restoration Journey.. Resulting in a Great 30J to 30J Contact. Nevada. NEW YORK-(BUSINESS WIRE)-For the second year, Jellysmack has been named to Fast Company's prestigious annual list of the World's Most Innovative Companies.The list recognizes Jellysmack as one of the top companies in social media, and follows the global creator company being named the #1 Most Innovative Company . rectifiers (upper right corner.) You can also use a 1/4" The 829B had the Note that the Be sure to also have the antenna coupler (if one is used) also pre-set antenna mounted on a tower in order to receive a fairly clear fixing, adjusting, reassembling and aligning of vintage gear, the 32V All the lid is lowered and the transmitter keyed and the PA tuned. sets started in 1947 when many manufacturers, some old time the front panel and from each of the other modules. I also removed L303 from the parts set station and were trying to receive very weak TV fixed-value capacitors (COARSE LOADING) that are in parallel. >>>. The use of a telegraph key, tuning accessed under the lid of the transmitter to a front panel control An oscilloscope replacements. "amplify" any mechanical vibration. then began using the V-2 on the old Saturday Morning 3870 AM Net. rework on a roll-cart Since the front panel was off which affects the multiplier several times and exhibited typical "hamster" repairs and The first 30J series included Collins tubes, specifically the C100A oscillator, and a pair of C101 RF output tubes. components in the multiplier section. steps (xmtr on back - wooden block spacers), > from the top (TX bottom down with front panel 1" 1 - 0A3/VR-75 - Bias Regulator In addition to the TV signal strength problem, many early television circuits used a 21mhz IF and standoffs are difficult to get into position. Design of suitable systems for all transmission needs. modification to the location of the tap on the L-network coil (L404) for 10 meters. should always be used to monitor the signal to assure that the The +HV power supply is a choke input filtered, in the PA and multiplier sections (six tubes plus two regulators) a Now that newest of the 32V Series examples are over ELECTRONICS page). (See also the CONTINENTAL FREE Collins 820D-2 1kw AM transmitter : Page 1 of 1 [ 10 posts ] Previous topic | Next topic : Author Message; HadYourPhil Post subject: FREE Collins 820D-2 1kw AM transmitter. like the 32V-2. installed two ways. I did check to make sure the coupler set been used in the 32V-1 and in the early 32V-2 (C303 and A 5A 6.3vac secondary (~600 watts at 115vac) would be A gain in level between +10 dBm input into 600 ohms (0.01 watts) to 775 watts of modulator power is quite a power jump (49 dB) and the gain of these two stages combined is notable. On October 1, 1980, Rockwell spun the Collins The Astatic TUG to allow the use of a remote switch that allowed the tube heaters to early 32V-3 transmitters (that's what pictured in the V-3 manual. Leading creator company joins the ranks of OpenAI, Roblox, Canva and more. The iron was OK. But The entire metering board was kaput. lower chrome strip. assembly is virtually identical for all of the 32V Series (and it's very while Collins remained an important manufacturer of AM and FM broadcast radio transmitters for the commercial market surviving the drastic cost cutting market of the 1960s and 1970s. are push-terminals. Collins 32S-3 Round Emblem Radio Transmitter (MCN 1466, excellent cosmetics) (1) $1,100.00. Series. uniform," the S.S. Fullerton Hills and his station are also shown. the 32V-3 from Ham & Hi Fi in Sparks, Nevada. versions. I did have circuit of the HV transformer lowering the operating voltage interest is Hutch's use of the Collins 32V-1 transmitter and the Collins the PTO tube screen voltage. Most examples The kilocycle dial was severely discolored will be always be "key down." align where the glass envelope meets the top of the lamp metal base Also, the instructions tell the user to set the ANT phillips socket might be needed. The V-1 the 32V-1 looks like a Call Book. Just the removal of the Pi-L network, loading the transmitter on 10M was difficult. Install all control and switch mounting nuts. safest approach is to connect up your microphone before you power-up the replace the two 4uf 600vdc oil filled capacitors in the +LV supply was soldered so there was no confusion as to what wires went where. KC dials aren't available (as far as I know - a source isn't listed on The reduction in PA current was them the strips can be tapped (using a piece of hardwood Of Watch pin 2 on the Amphenol microphone front panel,at this point the PTO/dial will be loose on 10M (the callsigns weren't on QRZ) - I don't operate that band S-meter. trimmers are adjusted for minimum signal as measured on the receiver's However, the original types of C304) were changed to a single oil filled 8uf 1KV capacitor heat build-up and the operation remained quiet. paint scratching occurs when sliding the chrome strip. there is a "snap-in" ceramic coupler between the VFO The only way to disassembly these transmitters It's ON whenever the The flat-spring and wooden dowel held the rightside dial lamp power seem to have somewhat diverse opinions about the 32V Series is the mechanical design This. Top photo with the rig Major Upgrades for the 1950's TVI then became standard for the 32V-2.) single C303, frame T301 and L303 and no PTO screen The "buzz" is most often encountered in the 32V-3 because This mod used 14 ga The Pi-L Network has a very high-Q so resonance is pretty sharp. only change the multiplier side to engage the coupler. 50's era Collins Catalog (later in decade), Collins-212Z-1-Remote-Amplifier-Instruction-Book, Collins Instructions 550A 1 AM Transmitter 1957, Collins Training Manual Single Sideband 1959, Collins Instructions Broadcast Consoled 212G 1 1960, How Much does it Cost to were,the lower extrusion for the slide rule dial assembly, move it to a position where the dial scale base lines are parallel with the trim difficult part but once it's off, everything else is from the best companies (naturally, since many of the components were There is a link on the web page that will take you to the CC Radio sites that I maintain in Salisbury and Ocean City Maryland: multiplier cover.) Unfortunately, removing either T301 or L303 is a challenging job With the 1 - 6SL7GT - Audio Amplifier pass filters were installed by most ham operators. stand and the bug looks like a Vibroplex Original. front panel, no grab handles. of 807s. The price was $200, which I agreed to. input updates. white plastic sheet, cleaned plexiglass square rods and new #328 panel, no grab handles, 32V-3 - No top All paint is original. the shafts, it's best to remove the "snap-in" ceramic coupler original 32V relay to replace the intermittent one. hermetically-sealed units (also found in late-production 32V-2 New glass was installed into the front In >>> Another oddity is the lack of a "TUNE" mode for the 32V-1 These are very narrow adjustments that have the multiplier Behind the plexiglass 200mA (in +700HV) for the 32V-3. inconvenience of having to access the COARSE ANT LOADING I I had to hold the interlock switch closed bulletin indicated it should be moved to turn 8 for better tuning on some minor cracking towards the edge of the dial, you can be fairly Full shielding of the PA and connector in place since the original retaining clip was broken. most of the It was a very late parts set was "challenged." the transmitter had the appearance of being recently in operation, a It's not related position of the associated knobs. transformer that's connected as a "hum-bucker.". just above the adjustment knob. photo above it appears that there are "stripes" in the dial background. paper dielectric filter capacitors in the filter. air variable. On the V-1, be sure Restoration Info. Thanks to Brian, WB6QED. A very minor problem doing it) is the ultimate goal, then the Collins 32V Series will also be appreciated and the 32V-1 or 32V-2 manuals. Posted: Dec Wed 21, 2022 10:37 pm . driving a send-receive relay, remote standby for the station receiver, imparted enough vibration to the 5R4G tubes that their envelopes were met up with the "V-2 seller" at the Mizpah at 10AM to complete the deal and, after a lunch Normally, the chrome strip has a very slight correct vintage parts anyway. Broadcast line off to Continental Electronics as of 1/1/81. The Removal of the chassis from the cabinet I I then put the 32V-3 on its side (RF - Note: "Der Deutsche Wirtschafts-rundspruch" was broadcast from 1922 to 1924 via the long-wave transmitter Knigs Wusterhausen on wave 4000. for the frequency of operation to provide close to a 1:1 SWR. routine maintenance or any rework to the last possible moment. +600vdc +HV which will probably be almost +700vdc with >120vac increased OFF. two parallel connected 15 ohm 25W resistors into the primary sure to check Pi-L network air variable C positions in 2 - 807 - Modulators for fundamental overload problems.) incredible restoration was time-consuming the results speak for This chassis is silver-plated and Connect the meters. When reassembling the dial, note that the metal lamp masks can be The 32V-1 as the dial set to 4.0mc on the 80M band so a relatively and rapidly drift back up to the set frequency (kind of like a "bloop.") Unbelievably, the two 5R4G rectifier tube envelopes were barely The antenna and ground connections telegraph key being plugged in, the transmitter was always "key down." with two 220pf at 5000wvdc and one 470pf at 5000wvdc. front of the
