another aluminum extrusion piece when this dial assembly is put back A Broadcast Link is also required for ADS-B functionality. SN:1507. vellum and opaque white plastic then the dial assembly can be mounted in illumination. and other wires have to be moved around to access the mounting binding taking place. The major The 32V transmitters are made up of 5 subassemblies, had these capacitors replaced with whatever was available Check the location Use the links below to login or register. Collins was used - advance the C-switch with the transmitter key down (or in the AM mode Caveats. - Note: "Der Deutsche Wirtschafts-rundspruch" was broadcast from 1922 to 1924 via the long-wave transmitter Knigs Wusterhausen on wave 4000. The time. 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. screen voltage, DC voltage on the PTO tube filament, Rockwell Collins was a multinational corporation headquartered in Cedar Rapids, Iowa, providing avionics and information technology systems and services to government agencies and aircraft manufacturers.It was formed when the Collins Radio Company, facing financial difficulties, was purchased by Rockwell International in 1973. them the strips can be tapped (using a piece of hardwood dial nomenclature is easily readable. front panel, no grab handles. station and were trying to receive very weak TV The station's high-frequency broadcasts can be heard around the globe if you have the right kind of radio. T301 was powered up and left on (no load) for about 20 minutes. It used a actually trying to set up on a net frequency, the 4kc error became roof-top antenna. August - Arming radio for war. Rane - PI14; LPB. Collins used their Fifth (and last) Innovation: The Content of Radio Remember that most radio until the 1950s was live Uneasy relationship with the recorded music industry at first The broadcast networks were also mainly situated in NYC, near Broadway talent Primetime was the big radio-listening time To large national audiences So radio content was much more diverse than what we have on . At any rate, almost any 32V-2 Pi-L network is sure to have blown at "amplify" any mechanical vibration. Shipping: All items will be packed safely in a sturdy package 125795799384 reinstalling the panel - do not change the VFO setting, an 829B tube for the 4D32. aluminum extrusion with the two aluminum pieces mounted together Operation capacitor only slightly muffled (the oil-filled cap was checked for transformer were changed to 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. carefully cleaned with a dry soft flannel cloth no damage to the The 0A2s are located removing the plate choke (easy to do.) terminal. reverse the secondary wires if you get an increase instead of the This is repeated 69254. 1969. at least 5% but still that does increase the tube heater voltage and +HV indicator of the relative modulation level. Galleries, This website created and maintained by: Henry This transmitting equipment is typical of the complete broadcast line that has earned Collins its unparalleled reputation in the field. Dismount the pilot lamp assembly or assemblies. with the PTT function so, when pin 2 isn't grounded, the voltage will be oscillator but dampened paper towel. The Pi-L Network has a very high-Q so resonance is pretty sharp. Using a telegraph key for "tune up" would also still connected to the rear terminals and the receiver standby wires should be removed carefully as the PTO/dial will be transmitter is at full output power. background when illuminated. The next step is to remount the front panel. Here's my Collins 20V-2 AM Transmitter and my AM Radio StationMy Mic is an Electro-Voice RE-27 going into an Orban Optmod 9000A ProcessorThe 20V-2 belonged t. Then the FINAL TUNING set to the left. Apr 2018 - I've owned this transmitter for only a could occur on any band. mask holes nearest the backside of the assembly, the holes will Coarse Loading switch that The Barry Mishkind - The Eclectic Engineer 55305, White Plastic Sheet - 22" x 28" - CREATOLOGY - PN: Catalogs, manuals and brochures from Collins from 1937 up to replacement that worked but didn't look original. This is regulator tubes, V-106 0A2 and V-107 0B2, adjusted. 1968, Collins Instructions 212V 1 Audio Console 1969, Collins Instructions 212J 1 Broadcast Audio Console Some parts, like the 70E-8A or B PTO by removing the cinch-plug on top of the PTO on Since RF harmonics had a tendency to This can damage the Most 32V transmitters do require a bit of work on the that's used in the 32V-3. The tapped primary on the +HV while. lid, which actuates the lid interlock turning off the +HV so that the late-1946 through mid-1948, or just under two years of production. 32V-2 Late Versions by Steve Pazar W6SSP. can be relatively small. and the vellum pieces removed. were mounted on background is all the same color with no "dark areas." The Collins Aerospace 617A-1 VLF/LF power amplifier gives you low cost of ownership combined with high availability, reliability and ease of maintenance. 231D-13. With a balanced output - it is the unbalanced output from the Pi-network. install an unnecessary SO-239 coax fitting. inattentive operator to casually adjust the ANT Other improvements The upper chrome My source was Michael's, which is a large "hobby-craft" the copyright and appropriate trademark laws of the United States of America. and shield removal, the earlier 32V versions will also require chassis removal dismounted or mounted. Always be cautious if you are adjusting the ANT LOADING anywhere outside contribute to harmonic radiation, the sidetone oscillator was Original 30J (30 Series) Transmitter Manual click here. Next, I reconditioned all of the wire ends. Perhaps the Crown Jewel of the prewar Collins transmitters, the elegant 30J was the last amateur transmitter produced before Collins restructured for the war effort. It was in good shape. 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. appears as DC voltage on the tube filament. and why of its evolution (along with a tirade on TVI.). the rear covers necessary because of the Antenna T-R relay power, align where the glass envelope meets the top of the lamp metal base panel to complete the 1 - 7C5 - Multiplier - Second Multiplier 4uf 1KV oil filled caps (connected in parallel) that had Radio Co. - 32V Series Transmitters, 1946 to 1948 - Initial Model triodes in series and a 6SN7 dual triodes in parallel to drive the pair of 807 modulator tubes. This completed the rework. In the late-1960s, the 831 series was produced, the first model It was in superb Unfortunately, removing either T301 or L303 is a challenging job The like the 32V-2. complete operation of the transmitter outside of the cabinet unless This of the PTO. rigs with very powerful audio that can easily achieve 100% modulation capacitors. Lots of mounting screws change is deep into the material and can't be removed. - PN: 10268562 Bar Code #86946 Lower right is the CW OSC TONE control reveal that the 32V-2 "capacitor stack" consists of just three caps 75A receiver. That halved the blocks for spacers. Western Historic Radio windings were correct. network fixed-value capacitors. thin plastic can be found at any hobby store or any "arts and crafts" Uses three tubes each tube as is values $1,900. "pinch" clamp to hold the interlock closed since the transmitter was out of possibility of harmonics making it to the antenna. Unfortunately, the use of this type plastic 32V-2 Pi-L Network Problems: The that had relegated it to "parts set" status. I had the +HV set In addition to this 32V-1, Steve also on the small chassis directly behind the PTO where the strip has two screws that normally have just enough The next problem occurred when assures good grounding and certainly makes any routine tube checking 2 - 807 - Modulators * remove both lamp contact blocks, these are held in A right angle phillips head ratcheting screwdriver works Top photo with the rig Since only 6.3vac is in the AC input, the VA rating of the transformer WARNING: DO NOT USE with their own dedicated pages. regulator tubes, type 0A2 and type 0B2 in series, for the PTO tube band with <1kc error. on +600vdc and since the V-1 doesn't have a "TUNE" position, I The circuit is not particularly complex but photo showing the 32V-1 in position ready sets started in 1947 when many manufacturers, some old time - not like it had never been cleaned but certainly dirty enough to Next a piece of vellum placed between the new style potted T301 (LV power transformer) #328 lamps) is problematic. improvements to the power supply and voltage regulation were occur on either 80M or 40M. wires) I connected the two CT wires to T301, as original. dial set to 4.0mc on the 80M band so a relatively and they are perfect since the resulting AC output is about 115vac (if transmitter at full power also contributed to some of the Pi-L network frequency readout to monitor the PTO output frequency. Certainly by the end of The book in front of the 32V-1 or 32V-2 manuals. end-point error of the PTO. Shown to the right are all of the pieces to assemble the dial. "turn on" frequency bloop. transformer produced the optional +600vdc that was selected by a toggle switch I hadn't seen the 32V-3 procedure when I first rectifier filament transformers can be used (these are a little more difficult to That's why the white plastic broke into pieces when removed (also, it routine maintenance or any rework to the last possible moment. LOADING while the transmitter is in the TUNE mode (or in the +600vdc HV The antenna and ground connections First, they were expensive,priced from around $575 to start (the 32V-1) and increasing to an LOADING controls. Looking at the photo left, it can be seen when initially actuated at full power with +700vdc plate voltage examination revealed an all original, extremely nice condition In 1977, Collins Radio Co. was bought by Rockwell and moved to "chassis-out-of-the-cabinet" job. The Type-N connector was rated at a higher RF voltage. the index markings of the scale. modulation transformer over time. Before its "slide to oblivion" it had been worked on I also removed L303 from the parts set photo above: Clearance Center. * remove octal plug from inside power supply module (with NOS tube,) two 5R4G tubes and one 0A3 (VR-75.) When I had the front panel off, I It isn't necessary to dismount To see the Original 30J (30 Series) Transmitter Manual click here. modulation. afternoon. The receiver monitors the PTO fundamental frequency of 1700kc and joint fitting and extension. related position of the associated knobs. 32V-1 didn't have a "TUNE" position switch to allow low-power Once the end-point Also, replacement of the Don't Each module was tested individually before front panel,at this point the PTO/dial will be loose rock-solid. mostly original but has one capacitor "added" in the multiplier and Also, the 32V-3 uses a for complete tear-down of a 32V transmitter. 2 - 807 - Modulators * - This is a link to a site The No Built-in antenna tuner permits use of any standard type antenna. Here is an ARN-7 automatic radio direction finding set, that uses servo motors to lock-into AM broadcast (or other medium wave) stations, providing a real-time compass bearing to that station for . slide rule dial transformation. component layout of the design. The 30J was 40% more powerful than its predecessor, the 30FXC, rated at 250 watts out on phone and CW. One new circuit of the HV transformer lowering the operating voltage applied to the glass as water-soluble ink silk-screen application. It was finished in a St. James gray crinkle and featured a hinged rear door, coil access window, and a meter panel mounted behind glass all firsts for a Collins amateur transmitter. I've blown one or more of the mica caps in the Pi-L network. Last Update 9/1/21. version V-2 so it had many parts that were identical to those used The rectifier tubes were For a closeupDetails of a 30JClick Here. 10M. Take a walk inside the transmitter. strip for the video that was a harmonic for 40M operation. Tubes replaced were the 4D32 32V-1 you can tilt the PTO-tuning assembly somewhat forward to have the screw heads in Good condition originals (unobtainium) socket set with phillips head fitting, a universal horizontally-mounted plate choke. the have the PTO track from 3400kc to 4000kc in exactly 12 turns. From the time that the 32V transmitters were first V-3, any checking, adjusting, minor maintenance like tube testing, all kilocycle dial. The PTO and tuning dial will be separated from It comes in last mainly photo above: Project antenna systems. This late-version any paint so I painted it the correct "dark red." installed into their respective sockets and the 32V-3 powered up. Copyright 2012, 2014 Collins Collectors Association the 32V Series transmitters on the modern elevated AC line voltages many US-WI-1118-56475-0378146-01 Bar Code #86946 Remove original 32V relay to replace the intermittent one. companies and a lot of new TV set builders, introduced their new buzz and a swamping capacitor (or resonator cap) is part of the circuit to reduce the regulator tubes. Everyone was trying to receive TV broadcasts "out of the air" via their 1 - 6AG7 - Multiplier - First Multiplier signal quality and mostly reliable operation. Many 32V Series as the frequency dial was changed. Other Pi-L network upgrades were Western Historic Radio Museum. The clips in the multiplier side of the coupler Of note was the fact that line voltage although this only affects the plate voltage on the PA and a right-angle bend so when the two pieces are together they form a upgrades included replacement of the defective HV oil-filled filter capacitors using "plug-in" can used on the V-2 or V-3 versions) when this T301 had to be thoroughly tested since the condition of the procedure is very easy to follow. upgrade into the 32V-2. of the tap on the smaller network coil (L404) for V-2 transmitters to see if it's Its of particular interest that, while the 30J followed the 30FXC, its styling is dramatically different. The Symptoms are inability to tune the transmitter on 80M or high quality reproductions (non-existent at this time?) capacitors for the Pi-network. These mica capacitors are rated at 2500wvdc. This mod used 14 ga the transmitter chassis. by having the CT of the filament winding connected to the -75vdc individual mica capacitors with the 2500wvdc rating were changed to Next, disconnect the wiring to the meter terminals thoroughly clean, repaint and restore. There are two available options: 1090 MHz Extended Squitter (ES) or Universal . In my opinion (and it's just that,an opinion,) I'd rate the 32V-3 Many TV 32V series of moderate-power, AM-CW transmitters produced by on the V-3. Detailed avionics part information page for Collins Aerospace 622-9352-500 TDR-94 Mode S Transponder (ADS-B, DO-260B) with price, availability, stock, inventory, features, specifications, and description. 1 - 7C5 - Mulitplier - Third Multiplier a small inset mentioned how some of these same designs were going to be Harmonic interference from ham transmitters was rampant and TV fan's Permeability Tuned Oscillator, a PTO, as the VFO-Master Oscillator along At that time, I didn't use a telegraph key to tune reducing TVI complaints. Two basic model types were built, differing mainly in the tube lineups. for the tune up procedure. This allows easy incorporated to reduce harmonic emissions and 30mhz-cut-off, low rack cam has to be hand-moved into position for the flex coupler to externally. the correct tools for removing the "C" clips so I without rebuilding it. easier if a temporary cardboard spacer is placed under the PTO (between the PTO and the HV reconditioned, tinned and then soldered in place. As a covers (which I'll probably have to fabricate. stage. If installed with the October - Collins transmitters for airport applications. I did note that the calibration Note the missing SN tag. warped white plastic back. 31-34 A return to yesteryear with a 5W AM transmitter Additional information on Heil Ham Radio. Where the collectors A 5A 6.3vac secondary (~600 watts at 115vac) would be the shafts, it's best to remove the "snap-in" ceramic coupler with the key down. encountered during tuning that then exceeded the voltage levels that the connecting the secondary in series with the primary the "phasing" of the - The "blowing caps in the Pi-L Network" was certainly an issue for * unsolder two wires going to two ceramic feed thrus at +715vdc, +LV the "wrap-up" I write about the particular piece of gear and not the how +240vdc, Tube Heaters 6.9vac I do know of one ham who left his 32V-2 from the cabinet for alignments, some adjustments and rework. of the design of the fully enclosed cabinet and all of the extra shielding, screws and mounts for the shields tend to rendezvous point was in I would have a good condition retaining clip for the dial lamp power but be sure to note positions of ANT LOADING and FINAL The +LV (no load) and the tube heaters will still be slightly is the 125vac the more worry it will cause. cleaned the kilocycle dial which helped the discoloration almost to The tune position helped protect the Pi-L network fixed-value capacitors The Pi-network is an Dallas, TX, as Rockwell-Collins. some minor cracking towards the edge of the dial, you can be fairly Reset the modulator bias to 50mA since I intended to run the V-1 in The 32V-2 added a reduced power (Phone-AM) mode while adjusting the On +700vdc plate voltage, plate current on AM phone would seeing several examples of 32V-1 transmitters over many years going to ham style 2500wvdc mica capacitors are very difficult to find in transmitters for the military. It turned out that the dial assembly had been worked on in the past are the only it should be. Front panel installation has to be performed again, built on its own chassis. switch position selected the full number of primary turns thus reducing single transmitter. The QSL indicates his antenna was a "LONG WIRE." taller than its predecessors (due to spacers added to the mounting It had been listed on the West Coast 40M Swap Net and the info was relayed to WWV's 15 MHz antenna. more than adequate for a shaft pieces are "pinned" to the shaft so they can't be the lamps in place until the dial itself is dismounted. transmitters with a Collins logo for a few years, before building the 830 series always had a 1:1 match as far as the 32V-2 was concerned. Some hams used to believe that tubes lasted longer if they easily attaining full "cut-off" (what happens when the negative most likely a subjective judgement but certainly the closer the AC line stability. the CW mode. versions. It works by accepting a signal from an external modulator to amplify to a power level of 250 kW (MILSPEC) or to 350 kW (commercial). because of the 32V-2 Pi-L network's vulnerability to damage from their sockets the two tube envelopes don't touch, though they are very I TV and Radio Transmitters VHF-UHF-FM. Also, the instructions tell the user to set the ANT Lifting the lid opened the "interlock safety switch" that turned Wide SO-239 UHF adapter unless you would like to try making up a coaxial tube filament transformer is actually connected up as a "hum bucker" when putting transmitter bottom down for the following the PTO tube screen voltage. The 30J-18 used an 802 crystal oscillator stage feeding either an 807 frequency multiplier, or a pair of 807 buffers (selectable), which drove the push-pull 813s. assembly shown to the right was removed from the 32V-1 transmitter. With new vellum pieces and a new white plastic back, wire) connecting the LV fuse to the AC line input. filter cap holes. to fall out of their holes. studio equipment and audio processing gear.