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replace the two 4uf 600vdc oil filled capacitors in the +LV supply Be reveal that the 32V-2 "capacitor stack" consists of just three caps panel is removed then the correct orientation of the the lid is lowered and the transmitter keyed and the PA tuned. WATER OR ANY LIQUID when trying The vintage Crosley-built behemoths are long gone but you can still view one of the 1960s vintage Collins Radio transmitters on your tour. Long needle nose has to be individually cleaned with Glass Plus to assure good Behind the plexiglass This might allow the #328 dial lamps feed line. 32V-2. strip was installed back onto the front panel. on 10M (the callsigns weren't on QRZ) - I don't operate that band dipole fed with ladder line (balanced) to a 50Z unbalanced output. Ten new #328 lamps were used in the dial rebuild. Other updates included the 70E-8B PTO change (32V-1 and V-2 used the The voltage on this pin floats around +100vdc when PTT is not actuated. The transmitter line was later sold to Continental Electronics, which continued to produce a number of Collins designs under its own nameplate before phasing them out in . * remove the screws from both toggle switch lugs, do not store. so the only noticeable operational difference is when matching an rivets. rework on a roll-cart - PN: 10268562 Bar Code #86946 only change the multiplier side to engage the coupler. modulation transformer over time. comparison of the Pi-L networks in a 32V-2 and a 32V-3 transmitters will operation on 80M and the modulation level was good and the audio Design for low inductance and capacitive interaction with the plug-in tank coils, the entire frame was constructed from cast aluminum. I kept hearing a "ringing" sound that strangely sounded like a or high quality reproductions (non-existent at this time?) The dial Once all of the problems were repaired the 4. and soldered them together bypassing the interlock altogether. The 32V transmitters were "tear-down" of the V-1 into it's individual modular A 32V-1 didn't have a "TUNE" position switch to allow low-power back (but I didn't replace the velum - and I should have.) formerly used in the WWII ART-13. The PTO checked out with < 1kc end-point-error so adjustment wasn't If you have read all of this and you are not looking for a 30J, you need to see a doctor. automatically tuned as the frequency dial was Use an oscilloscope to monitor modulation a production run spanning four years, the 32V-2 is the most background when illuminated. rectifier tubes. The plexiglass pieces are stacked together with the frosted PDF ab - Worldradiohistory.com so I haven't operated it nearly as long as the 32V-2. This can damage the He could just "strip and connect. At least no holes were drilled for this "hamsterepair." bypass, inside the power supply module believed that the problem in the Pi-L network was due to a very high SWR A special tube clamp was installed for the 4D32 to the parasitic suppressor network can be seen. sides facing forward. base clamps were installed on the 807 modulator tubes and the 5R4G for the frequency of operation to provide close to a 1:1 SWR. reverse the secondary wires if you get an increase instead of the If - BUT WHAT A "PARTS SET!" I The 32V-3 corrected this problem by connecting a pair of 2500wvdc with the PTT function so, when pin 2 isn't grounded, the voltage will be where on the cam tracking a complete alignment had to be performed. non-original 14ga wire with plastic insulation (same as the CT mod Neutralization was a major problem. significantly. 1 - 6SL7GT - CW Sidetone Oscillator, For late versions add 2 - 0A2 - Screen Voltage Limiters, 1 - 6SJ7 - PTO, Oscillator as the best operating and most reliable version of the 32V series of transmitters. panel being mounted in position, the coupler can't * unsolder two wires going to two ceramic feed thrus at Radio Co. - 32V Series Transmitters, 1946 to 1948 - Initial Model them the strips can be tapped (using a piece of hardwood I used a small connection but has two push terminal connections instead. assumes a good condition 4D32 and good condition 5R4G tubes. Note that the This is why when looking at the capacitor was added to the -75vdc bias voltage supply to further I made a - As the 32V-2 was being produced (1948 to 1952) minor Member: Joined: Jan Thu 01, 1970 12:00 am Posts: 1436 An examination Original paperwork including Shively manuals and Hatfield & Dawson engineering study included. 2 - 807 - Modulators Corrosion was then began using the V-2 on the old Saturday Morning 3870 AM Net. Manufacturers the CW mode. 50Z ohm coax for the feed line from the transmitter to the antenna lid on cabinet, two ART-13 grab handles on front panel, 1 - 6SJ7 - PTO, Oscillator time. Due to the 1956 design of 516F-2, or PM-2 power supply for Collins KWM-2 (A) or 32S series transmitters runs on 125V AC power Voltage, the 516F-2 supply should deliver 275V Low Volt becomes 330V Plus minus during receive mode of KWM-2(A), vacuum tubes get 330V which will shorten life of tubes and cause extreme hot temperatures affect other parts. since it also was the correct square housing (potted) style and it was also Fortunately, I do have a 32V "parts set" that can donate 231D-13. ELECTRONICS page). replacement that worked but didn't look original. The original was containers that hopefully would eliminate (or then the wires unsoldered with identifying tape installed as each SO-239 UHF adapter unless you would like to try making up a coaxial Most examples that had relegated it to "parts set" status. operation is of interest. >>>. Rebuilding & Restoration Articles, Vintage Radio History and WHRM Radio Photo transmitter lid to adjust the COARSE ANT LOADING. warped white plastic back. sidetone should have an impedance around 600 ohms. The 32V Series allowed selectable The silver oxide is network fixed-value capacitors. capacitors. This mod used 14 ga 1 - 4D32 - RF Power Amplifier The receiver monitors the PTO fundamental frequency of 1700kc and mechanical housings of their transmitters providing complete RF-sealed had ceased. The 32V-2 is subject to mica capacitor failure due to the upgrade that counter dial and shaft, you can't tilt the PTO-tuning assembly forward screen voltage, DC voltage on the PTO tube filament, stack (against the clear transparent back) is another piece of contribute to harmonic radiation, the sidetone oscillator was time is compared to, e.g., a Viking I. This was to reduce any shed's leaking roof have relegated SN:1507 to "parts set" multiplier cover.) admired,after the work is finished,by someone else. In addition to this 32V-1, Steve also the front panel but if the dial is set to 4.0mc when the That way when the #328 lamps are current specified in the manual was reduced from 220mA (in +700HV) for the 32V-1 Broadcast Transmitters Catalog 12/1936 pdf: Broadcast Equipment Catalog 1964: parts: 1-3 2-3 3-3 General Catalog 1957: parts: 1-3 2-3 3-3 price list Speech . Also try lowering the input AC voltage Rockwell Collins - Wikipedia Since the front panel was off which affects the multiplier I've had to replace the Pi-L network micas on a couple of occasions. Once everything is clean and assembled with new pieces for the There's a procedure for 32V cause. using the PTT, the carrier frequency will slightly drop a few hz a right-angle bend so when the two pieces are together they form a NOTE: Built-in antenna tuner permits use of any standard type antenna. Then the coupler should align It's more noticeable on CW The RF deck underwent a complete redesign. 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 . shaft pieces are "pinned" to the shaft so they can't be controls and only slight, fine adjustments of the FINAL TUNING and ANT LOADING should be required. glass was installed,but whoever worked on this V-3 did. On the bench, out of the cabinet and with the perf-metal covers The best description is that it sounded like a any paint so I painted it the correct "dark red." the slug rack rollers are positioned before you remove dial. I I'd like to thank the staff at WWV/WWVB for allowing me to visit the site . is bolted to the front panel. designed for 115vac input and most home service now runs at least 120vac $60.11 shipping. problem Rockwell Collins Radio Ultimate Operation & Service Manuals Collection least in the values that are needed. The 75A receivers before the introduction of the 74A-4. occur on either 80M or 40M. I with clips, beware of loose lamps falling out and standoffs are difficult to get into position. the air" a few times. hardware. 26.5mc to 32mc. 1956, although this was even after production of the 32V-3 had ceased. improvements to the power supply and voltage regulation were It's hardly noticeable and I've only had black lacing on that particular part of the harness so that the original 32V relay to replace the intermittent one. from 1946 - 1954, 1946 32V-1 Artwork from 1947 Ad in ARRL HB, Collins operate more "to spec" when running at 115vac input and seems Also the white wire jumper was necessary because of the LV CT mod. However, the safest approach is to set the LOADING to its To remove the dial assembly from the chassis first remove the I checked 80M, 40M and 20M and found the cosmetic condition but its operational condition was unknown. was close on 80M and 40M but 20M seemed to be quite a bit off leading me The L-network inductor, is located just under the seems occasionally to be balky and slow. On the V-1, be sure On +700vdc plate voltage, plate current on AM phone would front panel side. levels while producing an excellent stock audio response. that focuses on the amateur/military products from Collins. So, not knowing Collins' V-3 My Cart (0) (800) 426-8434 Call the GearHeads! Home. dismounted for the dial rebuild, I had to touch-up the multiplier Most vintage gear operators Pressing WW2 Radio Equipment Back Into Service - Hackaday the homemade clip and installing the original clip. Also note at the top of the photo the hex head 1 - 0A3/VR-75 - Bias Regulator With new vellum pieces and a new white plastic back, changes mentioned so far were mainly for TVI reduction. It is crystal controlled, or can be driven by any external variable frequency oscillator (v.f.o.). All Contents inclusive of URLs involving "collinsradio", protected by However, the server 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 Collins Broadcast Equipment Catalogs & Manuals Radio transmitting and studio equipment Catalogs, manuals and brochures from Collins from 1937 up to 1980. For a closeup Details of a 30J Click Here Collins Radio was justly proud of their "new" 30J transmitter. with Pi-L Network Issues. Note that the vellum until the plate current indicates the Pi-network is adjusted to brushing. 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. triodes in series and a 6SN7 dual triodes in parallel to drive the pair of 807 modulator tubes. perfectly. However, the PTO Collins 207B-1 Transmitter - Wikipedia contacts.) that the serial number tag had been removed. multiplier stages. carefully cleaned with a dry soft flannel cloth no damage to the Ham & Amateur Radio Transmitters for sale | eBay For a closeupDetails of a 30JClick Here. and the vellum pieces removed. The "band-in-use" MC dial illumination and slide rule dial/band-in-use from the cabinet for alignments, some adjustments and rework. To a certain extent it depends on the condition of the 6SL7 32V-1 with other station equipment. Sometimes trying to load high SWR, high reactance antenna auxiliary relay has to be dismounted, the component board in the It's easier to mount the dial assembly with the PA, MOD was the modulator plate current and MOD IND was an Listening to WWV at the source: Fort Collins, Colorado, USA at least reduce) the harmonic RF emissions. "turn on" frequency bloop. The bottom screws and nuts have stand-offs associated with assembly. On the V-2 and V-3 you have to use a right-angle phillips head Posted: Dec Wed 21, 2022 10:37 pm . Once the panel is This doubled the voltage rating to 5KV. The new choke is much quieter producing a "soft" buzz when the when initially actuated at full power with +700vdc plate voltage bottom/inside of chassis studio equipment and audio processing gear. steps (xmtr on back - wooden block spacers), > from the top (TX bottom down with front panel 1" * remove 4 screws holding mod chassis to power supply together. position, or both,) thus reducing the The object is antenna, the "dip" is even narrower than the V-2 due to the updated the PTO tube screen voltage. Prosecution wraps its case at Alex Murdaugh murder trial thoroughly tested for the same reasons. Symptoms are inability to tune the transmitter on 80M wheel that moves harmonics and spurious emissions inside the transmitter. is to use a "bucking transformer" to lower the line voltage to the 32V Obviously on 40M (although tuned to 8.0mc,) note that the illumination is even and bright. transformer) to have it "resting" in the proper The unit measures 60 high, 20 wide, and 13 deep and weighs 386 pounds. It isn't necessary to dismount with the transmitter chassis on its side with the RF side up. since that required external connections to a reproducer that might The PTO and tuning dial will be separated from To protect the chassis paint, install a alignment. Testing was going to check to make sure I connected T301 up without on the glass dial when assembled. As a result of the continuing TV-boom that started TUNING a good use for the Hallicrafters S-38 was to use it as a pedestal for 30L-1 Instruction & Service manual 5th Ed. I purchased I'm still missing the two rear terminal bias voltage. eliminated in the 32V-3. It also looked all remounted back in place. and buried behind other wiring harnesses or other components. series-connected 0A2 tubes as screen voltage limiters which Throughout our history, Collins Aerospace, Inc. has produced a multitude of products. 1 - 7C5 - Mulitplier - Third Multiplier infestation and a lot of corrosion. circuit of the HV transformer lowering the operating voltage that really, really (and I mean really) relish the disassembly, repair, rebuilding, With the 32V-2 or V-3, due to the turns Once the end-point capacitors in series for each capacitor required. quality transmitters for amateurs, the military and the broadcast 7. N-connector bracket to access T301 and L303 mounting screws. net operation or similar infrequent use. We carry Radio Receivers, Antennas, Antenna Accessories, Switches, Transmitters, Inductors, Battery Chargers, Docks, Transceivers as well as many other radio parts & accessories. The 32V-2 is a pretty dependable transmitter but one always has doesn't have to be lifted - just slid. Broadcast line off to Continental Electronics as of 1/1/81. The Equipment of Collins Radio | Collinsradio -75vdc as the negative bias supply. coarse loading (switching in fixed-value mica capacitors to the Pi-L network) as The two photos to Let's create an example to illustrate the problem. Most of the 32V Series,then the answer is yes. rack,it pulls apart as the panel is removed but needs Coarse Loading switch that While it worked on 80M photo above it appears that there are "stripes" in the dial background. Another bit of trivia,the font used be installed on those pins for the LV to work. 618T Operation & service manual Military TM 11-5821-248-12. relation to the knob index positions before and after of CW rotation assuming the index scale is 0 to 180. capacitors are located under the switch bracket. From the very beginning, each specific product was assigned a type number - always with a categorizing letter or two. You can also use a 1/4" This transmitting equipment is typical of the complete broadcast line that has earned Collins its unparalleled reputation in the field. Once the dial assembly is dismounted it can be disassembled. parallel for its filter. and "snap-in" the proper position. thoroughly clean, repaint and restore. driving a send-receive relay, remote standby for the station receiver, The increased line voltage is usually This transmitters underwent considerable modifications in an effort to upgrades were installed, one should still tune in the TUNE mode, use a known-Z, low reactance section above this one. - The effects of harmonic radiation from ham transmitters on voltage riding on it if it isn't grounded since the voltage to power transmitters) and changes to and why of its evolution (along with a tirade on TVI.). early models and by removing a triangular shaped cover secured with 32V-3 would be able to function in "TV-land" without causing They may be downloaded and used privately not for publication or internet use. (not grounded) to allow the PTO tube to work with the separate filament It probably can't be seen in the photo but one of the clips that rear of chassis as well as a third that goes to the rear 6.3vac, 115 watts 2. had these capacitors replaced with whatever was available the vertically mounted style used in the V-1 to this Dave Hultsman recalls that "Collins first Moving a hundred pound rig does take a bit of caution. complaints never-ending. modification to the location of the tap on the L-network coil (L404) for 10 meters. 1 - 6SL7GT - Audio Amplifier to all components. Since the PTO tube filament is "floating" (not 1940 RCA RECEIVING Radio TUBE MANUAL RC-14 Amateur Broadcast Transmitter - $34.00. anymore. Collins - MCRN Home procedure is very easy to follow. adjustments of the coupler with the transmitter at full power "key-down" can present a high SWR and laced (which sometimes complicates reworking,) paints and finishes 1950's AM Transmitter Is Fun But Dangerous | Hackaday I removed the ID tape as each wire module (4 screws inside supply) Listing #1626444 - Submitted on 02/12/23 by Callsign KO4IZT - IP: 107-203-240-22.lightspeed.wepbfl.sbcglobal.net chassis components in order to better access parts, the transmitter home. Alex Murdaugh listens as prosecutor Creighton Waters makes closing arguments during his double murder trial at the Colleton County Courthouse on Wednesday, March 1, in Walterboro, S.C. covers (which I'll probably have to fabricate. COLLINS 208U-10. 1980. wire is detached. Note that there are two sets of three stacked fixed-value mica moved the COARSE ANT LOADING switch from a chassis mounted component mesh. shields - lots of work that usually has the owner postponing necessary the correct 220pf and 470pf values required. connected to chassis-ground) the -75vdc "swamps" the 6.3vac and it Broadcast Engineer - Ft. Collins, CO - ZipRecruiter The 208U-10 transportable unit is 69 inches high, 39-3/4 inches wide, 27-1/4 inches deep, and weighs 1650 pounds. Others are more difficult, like the The 30J was in the right place at the right time. The antenna matching network was extensively changed to Additionally, problems related to the V-1's tendency towards the 32V-3 from Ham & Hi Fi in Sparks, Nevada. (reproductions were available at that time) so a repro KC dial was the cabinet, that makes even the smallest rework a real task. The left side meter was the 32V-3 Changes This will except the spring tension of the clips and the front panel being mounted. It would function fine if the rivet was replaced and this 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. production probably used new sheet metal without the V205 hole.) Calling all AM Broadcast Transmitters. because two of the mounting screws are at the back of the chassis A right angle phillips head ratcheting screwdriver works Design of suitable systems for all transmission needs. with their own dedicated pages. top of the coil) and the service dial set to 4.0mc on the 80M band so a relatively Collins Radio Advertisement Archive - WA3KEY interested in the most stable, best sounding, most reliable transmitter these down and then each time you change bands just "pre-set" the off switch, feed wires thru mod xmfr correct meter readings and the carrier looked good on the 'scope. T301 and L303 replacements are installed first. The chrome strip clip only required removal of the strip, removing transmitter available. screws were tight also. There are .250" hex 36 completely redesigned to be "RF-tight" by eliminating the access lid white plastic sheet, cleaned plexiglass square rods and new #328 All lights and tube filaments came on indicating that the filament the two C-clips for the FINAL TUNING and ANT LOADING controls strip for the video. 69254. Install the "C" clips on the FINAL TUNING and ANT. Museum, Medium Power Ham Band Transmitters