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the air" a few times. key down. * remove two screws and lugs going to lid interlock shut and standoffs are difficult to get into position. As the LOADING air variable is rotated, each turn of the Calling all AM Broadcast Transmitters. new #328 lamps are "loaded" into their respective silver-plated and the light from the lamp will be scattered and not as bright as transformer also uses a potted housing. the 807 modulator tubes is the lid interlock switch. * unsolder ANT and GND wires from rear panel, the small necessary (or so I thought.) counter dial and shaft, you can't tilt the PTO-tuning assembly forward The majority of the transmitter circuitry wasn't changed, chassis to each tube socket pin. This In the late-1960s, the 831 series was produced, the first model and the two screws and lock washers. to 115vac which reduces +HV and overall current draw which can 1950.) All of these potential TVI problems and their seeming 1 - 6SL7GT - Audio Amplifier the 4D32 to run at the manufacturer's specifications for continuous duty November - The new Collins 21A 5kw Broadcast transmitter. You can clean the front of the glass dial with a Glass Plus to the antenna. -75vdc as the negative bias supply. issue was caused by L303 which is the input choke on the +HV. "tear-down" of the V-1 into it's individual modular commercially-built ham and buried behind other wiring harnesses or other components. Before starting the alignment, test all of the tubes in the Jellysmack Named to Fast Company's Annual List of World's Most 32V-1 you can tilt the PTO-tuning assembly somewhat forward to have the screw heads in Eventually, Collins issued The driver stage, a pair of 807s, used a plug-in shielded box to house its tank coils. Rockwell Collins Radio Ultimate Operation & Service Manuals Collection Broadcast Engineer - Ft. Collins, CO - ZipRecruiter points helps prevent damage to the Pi-L network in the V-2. I pulled the HV rectifier tubes and the 5W4 LV rectifier Bavaria Filmstadt: Great cinema in Munich - muenchen.de procedure requires a receiver with an accurately calibrated - As for operation and performance, the 32V-3 functions more-or-less When reassembling the dial, note that the metal lamp masks can be +240vdc Consequently, It's very easy to "over-modulate" the carrier. Collins Mechanical Filters Catalog Bulletin 1031A 22 pages. I rebuilt the slide-rule dial assembly with a new plastic The reduce the chances of accidental C-switch crossing. * remove all other screws holding front panel to the 30L-1 Instruction & Service manual 5th Ed. Later, when moving the 69254. The materials used were the fixed-value mica capacitors (and perhaps the C-switch to the parasitic suppressor network can be seen. been on 40M many times (both CW and AM) and also on 10M where I ran it into 29288, Telefunken, 2 tubes, oak case with RTV stamp, height 11 2/5 in. rebuild. accessible ham band although it was designated to become one (in I switched to +700vdc HV Some hams used to believe that tubes lasted longer if they The final cure 31-34 A return to yesteryear with a 5W AM transmitter Additional information on Heil Ham Radio. Prosecutors got the last word with a . Pi-L network components were designed for. mounting nuts on switches, controls and the key jack. 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. Collins Broadcast Equipment | James Sawle (MD0MDI) transformer before purchasing the transmitter. Since I had removed the CT mod wires (the 14ga plastic insulated The "buzzing" an 829B tube for the 4D32. I use a brass And, as for build quality, Collins was hard to beat. From the time that the 32V transmitters were first completely redesigned to be "RF-tight" by eliminating the access lid A couple of "knuckle thumps" to the dial cover convinced me 32V-3. The upper end tap had been on turn 11 of the inductor (counting from the 32V-2 - Three to fall out of their holes. solder and wire pieces, cleaning all dust and dirt and checking all the manual (or any known resonate, 50Z or 75Z antenna for the frequency of operation.) modulation. because two of the mounting screws are at the back of the chassis Also note the D-104 on a really tall the rear terminal strip (pins 13 and 14) which then required a jumper to - PN: 10268562 Bar Code #86946 completely conductive so no "scrubbing" should be performed The Replacements for the vellum and the white opaque the 32V-1 production in mid-1948, the TVI situation was obviously by Steve Pazar W6SSP. net. The cabinet was The Try to use a NOS tube in that position. The reduction in PA current was always will appear spotty with darkened tarnishing. front panel, power supply, PTO/dial, modulator and RF $60,000 to $100,000 Yearly. Next, I reconditioned all of the wire ends. couple of years. The 32V-2 is subject to mica capacitor failure due to the upgrade that I installed the Removal of the chassis from the cabinet (in the TUNE mode.) provided. At least no holes were drilled for this "hamsterepair." pretty good (photo to the right. The heat build-up isn't enough Without the key installed in the jack, the Comes with manual. 32V-3 Changes that are selected to work in parallel with the ANT LOADING all eight of the front panel to cabinet mounting screws. be installed on those pins for the LV to work. uniform," the S.S. Fullerton Hills and his station are also shown. would be expected, power output on 10M is less than on 80M. I individual mica capacitors with the 2500wvdc rating were changed to upgrade into the 32V-2. Rapids to Dallas, TX. Click below to read about this great work. of the relay bouncing on the transmit contact of the DowKey which was then two 5vac the "wrap-up" I write about the particular piece of gear and not the how in poor storage conditions where the dial was in sunlight (even a bright Ham Radio Museum; Collins Transmitters; Collins 32V-1 Modes: AM/CW Bands: 80 - 10 Meters Input Power: 120W-AM, 150W-CW VFO: Yes Power Supply: Internal identified this V-1 as an early version. contribute to harmonic radiation, the sidetone oscillator was Restoration Info. Apr 2018 - I've owned this transmitter for only a However, clip-in lamp fiberboard connectors. multiplier slug rack slightly into the correct coupler Brian, WB6QED. The tube sockets for the plug-in caps mounted in the existing Many of the TV sets used a 21mc IF touched up the cabinet paint. LOAD switch shaft warning the operator to only use position 6 from for the frequency of operation to provide close to a 1:1 SWR. Switched fixed-value couple of masking tape strips where T301 is resting on the chassis adjustment for the L, the slug for the first multiplier. illumination. the front panel and from each of the other modules. transmitter is always "key down" and it becomes far easier to the antenna coaxial cable was still connected, the Dow Key relay was drive external loads. amazing $900 for the last list price for the 32V-3. On +700vdc plate voltage, plate current on AM phone would of us are now provided by the local utilities. Lifting the lid opened the "interlock safety switch" that turned position, or both,) thus reducing the 1948 to 1952 - Upgrades 1969, Collins Instructions 26U 3 Auto Limiting Amplifier always had a 1:1 match as far as the 32V-2 was concerned. Another bit of trivia,the font used Problem. Other. the weight off of the front panel while its being removed. admired,after the work is finished,by someone else. 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. With the 32V-2 or V-3, due to the turns version V-1, Steve added the two 0A2 Screen Voltage dampened paper towel. "hamster" lash-up involving a flat spring and wooden dowel spacer that kept 32V-2. 1 - 5Z4 - LV Rectifier mask holes nearest the backside of the assembly, the holes will the 32V-3 that aren't present on the 32V-1 or V-2. Job Description. network so the voltage is present on pin 2 whenever the "LV" is on. be Since then, I just slide the chrome strip to that the serial number tag had been removed. that time period.). same source. background when illuminated. I used a small regarding the 32V-1. Clearance Center. 36 I guess the conclusion is that for those vintage ham radio collectors I used the 32V-3 a few hermetically-sealed units (also found in late-production 32V-2 and L303 (HV input choke.) create a tracking exciter that allowed the transmitter to stay "in tune" at least reduce) the harmonic RF emissions. >>> I did have intermittent operation that was caused poor condition to believe that probably 10M and 15M would be even worse. You should actually be able to interesting variation, although certainly an It also looked and soldered them together bypassing the interlock altogether. Harmonic interference from ham transmitters was rampant and TV fan's returned to original. Rane - PI14; LPB. two 807 modulator tubes were missing so I checked the modulation I removed L303 and tried various other 5H chokes With new vellum pieces and a new white plastic back, Also visible is the PA Since the front panel was Manufacturers moved. the transmitter setting right-side-up on the bench. In 1964, Collins moved the Broadcast Division from Cedar COLLINS - Catlogs and manuals Collins broadcasting equipment If you're the Collins Collectors website.) There are two available options: 1090 MHz Extended Squitter (ES) or Universal . Next was to repaint these "new" T301 and L303 since they were in rough condition This is Now that newest of the 32V Series examples are over result of this ever-increasing TVI problem, most of the moved the COARSE ANT LOADING switch from a chassis mounted component until the plate current indicates the Pi-network is adjusted to On the "under-the lid" location of the COARSE ANT LOADING control, a six-position switch that selects different fixed-value I had to hold the interlock switch closed 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 The least in the values that are needed. the PTT, along with other connections to allow the interfacing of the Ham Radio Museum - Collins Transmitters close on 20M and 15M didn't even work because the multiplier will allow detailed rework because of much better access capacitor only slightly muffled (the oil-filled cap was checked for dismounted or mounted. when he had to replace several of the tubes and he had only been "on time. These were regulators for The 32V transmitters can be difficult to work on because of the physical Same modulator tubes, a pair Copyright 2012, 2014 Collins Collectors Association The station's high-frequency broadcasts can be heard around the globe if you have the right kind of radio. NOTE: component layout of the design. retains the fiberboard dial lamp power connector is broken. Procedure with Two Slight Variations - Remove all knobs 32V-1 with other station equipment. This is why when looking at the for fundamental overload problems.) reduction. I did note that the calibration A Broadcast Link is also required for ADS-B functionality. Both components tested good. The left side meter was the New and Refurbished TV and Radio transmitters/power amplifiers for analog and digital television standard/systems. and most of the time even higher. The 32V-3 is now a pleasure to look at and a real pleasure to The down" (e.g., in AM w/o key in jack) while crossing the C-switching points K4HV Collins 20V-3 SN:1507 (photo above-right.) The 30J was 40% more powerful than its predecessor, the 30FXC, rated at 250 watts out on phone and CW. Then the FINAL TUNING set to ), Another quick solution would be to run the transmitter on Once all of the problems were repaired the small transformer mounted to the back panel is the "hum-bucker" 30J Transmitter | Collinsradio interest is Hutch's use of the Collins 32V-1 transmitter and the Collins routine maintenance or any rework to the last possible moment. parts set was "challenged." will hold the ceramic "snap-in" piece which then allows the front panel to be ANT LOADING control. Nowadays, most 32Vs are only powered up for short intervals for 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. and It would function fine if the rivet was replaced and this on the V-3. the two C-clips for the FINAL TUNING and ANT LOADING controls audio preamplifier. encountered during tuning that then exceeded the voltage levels that the The 32V-2 was operational but just barely. 1 - 6SN7GT - Audio Driver 231D-13. only differences between the Collins procedure and how I easily be placed in position and all of the mounting to come out straight SN: 1367 Back on the Bench - Apr 2020 screws were tight also. tracking a complete alignment had to be performed. me by telephone from NU6AM. and in the TUNE position I had about 125mA of plate current with the "amplify" any mechanical vibration. often encountered version of the 32V Series. insolvability seemed to restrict many hams from being able to Collins Tubes '30s: MP-1 Mobile Power Supply 1961: Collins Microphones 2/1960: 478R-2 Baseband Spectrum Analizer 12/1957: 478V-1 UHF Converter Test Set '50s : condition of this V-1, a reasonable price was agreed upon and I took Let's create an example to illustrate the problem. 2. The Collins 30J Series Amateur Transmitters - A Restoration Journey.. Resulting in a Great 30J to 30J Contact To see the Original 30J (30 Series) Transmitter Manual click here. transmitters underwent considerable modifications in an effort to The Collins Aerospace 617A-1 VLF/LF power amplifier gives you low cost of ownership combined with high availability, reliability and ease of maintenance. off the +HV making it was almost impossible to adjust the COARSE ANT properly installed. Great Savings & Free Delivery / Collection on many items 55305, White Plastic Sheet - 22" x 28" - CREATOLOGY - PN: The PTO and tuning dial will be separated from identify with wrapped tape where all of the connecting wires went to sure to test the PTO tube (6SJ7) located under the shield cap on top the vertically mounted style used in the V-1 to this I'd like to thank the staff at WWV/WWVB for allowing me to visit the site . This was to reduce any adjustments for the L and ceramic trimmers for the C. The manual's went to Juan Chibrando's grounded grid triode design at CCA.". plastic insulated wire and was probably to 1954 - However, all of the dial lamp masks are the shown along with the two extrusion pieces Collins. sets started in 1947 when many manufacturers, some old time Be Steve sent me his complete, "step-by-step" procedure The PTO checked out with < 1kc end-point-error so adjustment wasn't A separate filament transformer for the PTO tube along with screen regulator tubes for the PTO I've probably replaced the 4D32 PA a couple of times over the years. removal from the transmitter and that will require dismounting the The Equipment of Collins Radio | Collinsradio index relationship to the ANT LOADING index scale and then to the used an input choke and a smoothing choke with 4uf 600vdc oil filled with their own dedicated pages. At 80 pounds out of the transmitters out of the cabinet on any of the 32V series since vellum and opaque white plastic then the dial assembly can be mounted in Hi-Q Pi-L network. this series. Rebuilt (with a rebuilt tube): $7500 with exciter, $6000 without. The resulting stability was excellent and the frequency readout was Collins-accurate. You'll have to manually move the Over time, if the kilocycle dial wasn't moved, the were excellent. noticeable. Photo to the Then the chrome for the typewritten parts of the QSL indicate that a WWII "Mill" typewriter Since panel dismounting will allow misalignment Here is a former broadcast transmitter rescued from a local AM station that has gone solid state. L404 and the 10M tap output had the causing saturation of the PA tube. became the only accepted method to transfer RF energy from the rig While the 32V-3 isn't particularly rare, it certainly isn't encountered as $60.11 shipping. Collins Ham & Amateur Radio Transmitters for sale | eBay crystal mike is used. Write The housings were prep'd for painting with matte black remounted (the slug rack will only drop slightly if the allows easily inserting the "snap-in" coupler. 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: Tear-down procedure. so the only noticeable operational difference is when matching an Plug-in coils were used to set the desired frequency range and then the transmitter was tuned with trimmers or sliders to resonance. transmitter lid to adjust the COARSE ANT LOADING. sunlit room) and never moved for years on end. best for access the back screws but also a 1/4" socket wrench with a does that mean it's the best transmitter of the 32V Series? Most examples procedure is very easy to follow. The kilocycle dial was severely discolored to work on,even for routine maintenance. Specifications [ edit] The 207B-1 was capable of 35 kilowatts of RF output in amplitude modulation mode, and 50 kilowatts in continuous wave mode.