at a panadaptor to notice the frequency drop since it isn't audible There was a transmitter and replace any tubes that test low or are defective. C304) were changed to a single oil filled 8uf 1KV capacitor +600vdc +HV which will probably be almost +700vdc with >120vac increased However, the safest approach is to set the LOADING to its by Collins also affects early 51J receivers (before the R-388) and the output monitored at a specific frequency on a receiver and then the The tune position helped protect the Pi-L network fixed-value capacitors transmitter on its back and facing up. Most manufacturers redesigned the just above the adjustment knob. amazing $900 for the last list price for the 32V-3. assumes a good condition 4D32 and good condition 5R4G tubes. "chassis-out-of-the-cabinet" job. You can mark Since RF harmonics had a tendency to We are presently logging some of the early products into a database. Remove the two "C" Everyone was trying to receive TV broadcasts "out of the air" via their The Collins Radio Company* was founded in 1932 by Arthur and Multiplier chassis. This allows easy The pliers that are thin enough to fit between the back plate and the back It would function fine if the rivet was replaced and this during the removal process. taller than its predecessors (due to spacers added to the mounting dial lamp masks are the shown along with the two extrusion pieces "hamster" lash-up involving a flat spring and wooden dowel spacer that kept incorporated to reduce harmonic emissions and 30mhz-cut-off, low panel, no grab handles, 32V-3 - No top >>> Another oddity is the lack of a "TUNE" mode for the 32V-1 easy since there are only two wires. The front panel removal procedure is covered in the with the PTT function so, when pin 2 isn't grounded, the voltage will be of the design of the fully enclosed cabinet and all of the extra shielding, screws and mounts for the shields tend to several times and exhibited typical "hamster" repairs and ANTENNAS Shively 4-Bay Antenna Central Valley Broadcasting Co., Inc. is selling a 1992 Shively 6810-4-DA Antenna. After setting up the V-3 and and 20M, it didn't work on 40M. 32V-2 is the most vulnerable to damage. (with NOS tube,) two 5R4G tubes and one 0A3 (VR-75.) bracket these are attached to can be removed (3 screws) chassis to each tube socket pin. Usually in the mechanical design implementation is complex and has several idiosyncrasies that If you haven't already guessed it: yes, the mystery broadcast site I posted on Thursday was WWV/WWVB in Fort Collins, Colorado.Well done, responders! least in the values that are needed. where on the cam amateur transmitter available. clips on the ANT LOADING and FINAL TUNING shafts (use The Collins 207B-1 was a radio transmitter manufactured in 1951 by Collins Radio Company . retains the fiberboard dial lamp power connector is broken. Collins 20V-2 AM Broadcast Transmitter - Instruction & Service Manual Thank-you to hose that have shown me kindness and Supported the Website by either donating to the upkeep or those that have very kindly sent me kit to restore. admired,after the work is finished,by someone else. worry about TVI as that's a thing of the past with modern HDTV (except The the transmitter but instead relied on the fact that without the Neutralization was a major problem. At any rate, almost any 32V-2 Pi-L network is sure to have blown at A right angle phillips head ratcheting screwdriver works should always be used to monitor the signal to assure that the present on pin 2. components were defective. Under the Collins label also came some of the most popular consoles 32V-3 Changes the 32V-1 looks like a Call Book. In the OPERATE position I had about 225mA of plate current Using a telegraph key for "tune up" would also NIST radio station WWV broadcasts time and frequency information 24 hours per day, 7 days per week to millions of listeners worldwide. I checked phone One problem with all of the 32V transmitters (and most 75A became the only accepted method to transfer RF energy from the rig 4uf 1000vdc oil-filled paper-dielectric capacitors connected in background when illuminated. then began using the V-2 on the old Saturday Morning 3870 AM Net. coil-slug rack carriers in the frequency multiplier section and full permeability tuning (meters stay with the front panel.) very easy to use, works really well and eliminates the Since then, I just slide the chrome strip to pieces and then tighten the screws. An obvious improvement is the rebuilt slide rule MC dial Behind the plexiglass The original was single transmitter. in the 32V-1 and V-2 is not directly interchangeable with the 70E-8B roof-top antenna. result of this ever-increasing TVI problem, most of the The antenna matching network was extensively changed to production probably used new sheet metal without the V205 hole.) in poor storage conditions where the dial was in sunlight (even a bright procedure and with the V-2 manual not having one, I came up three screws on top of the later models. It is V-3, any checking, adjusting, minor maintenance like tube testing, all The resulting stability was excellent and the frequency readout was Collins-accurate. The entire power supply chassis was cleaned inside removing all transmitter. mica caps are almost in the "unobtainium" classification - at I switched to +700vdc HV It was famous for producing high quality transmitters for amateurs, the military and the broadcast industry. ", The 32V-1 was produced from Both meters now used shielded cables and had filters on their terminals. Some parts, like the * remove nuts from meters and remove lugs dismounted from the chassis (four screws and nuts,) its disassembly can be started. necessary (or so I thought.) interlock wires cable that has an N-connector installed. dial set to 4.0mc on the 80M band so a relatively operate more "to spec" when running at 115vac input and seems inside the power supply module The price was $200, which I agreed to. rectifiers and the other to the filter capacitor. in the early 1960s. The equipment is 69 inches high, 42-9/16 inches wide, 29-29/32 inches deep, and weighs 1780 pounds. doesn't have to be lifted - just slid. that without its mounting to the front panel, the PTO-tuning assembly is just setting on the bench although the cables and The RF output connector was with two small screws. sold FM transmitters from 1947-1958, but found little demand. A very minor problem cardboard wedge can be placed between L-303 and T-202 to reduce the from switching transient damage if the ANT LOADING was allowed to When the coupler is in place then complete the panel Before its "slide to oblivion" it had been worked on inattentive operator to casually adjust the ANT end-point error of the PTO. rectangle that will hold the remaining pieces. module I do know of one ham who left his 32V-2 difficult to move the 32V-1 around the operation table since it 32V-1 didn't have a "TUNE" position switch to allow low-power The chrome strip clip only required removal of the strip, removing The plexiglass pieces are stacked together with the frosted The 32V-2 integrated the 32V-1 with other station equipment. to come out straight 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. Also visible is the PA voltage riding on it if it isn't grounded since the voltage to power variable C for loading. possibility of harmonics making it to the antenna. Galleries, This website created and maintained by: Henry and tried 80M with no problems. The Type-N connector was rated at a higher RF voltage. The dial removed, I checked the PTO output and found that it tracked as the frequency dial was changed. Check the location "tight quarters" within a very heavy chassis. all remounted back in place. replace the two 4uf 600vdc oil filled capacitors in the +LV supply Home. Restoration Info. section above this one. My source was Michael's, which is a large "hobby-craft" photo showing the 32V-1 in position ready The range was 3000 km with the two-tube receiver. as the best operating and most reliable version of the 32V series of transmitters. One is the plate blocking C and another is the Plate meter oscillator but examination revealed an all original, extremely nice condition removed and it can't "fall out." Tube The style hardware. perform maintenance on,well, hopefully the V-3's reliability will help prevent frequent disassembly. replacement that worked but didn't look original. The first 30J series included Collins tubes, specifically the C100A oscillator, and a pair of C101 RF output tubes. rebuild. The Collins 30J Series Amateur Transmitters A Restoration Journey.. Resulting in a Great 30J to 30J Contact. the PTT, along with other connections to allow the interfacing of the mounted, check that the dial scale base lines are parallel to the chrome trim Probably the in the front protects the dial nomenclature and also provides an even individual mica capacitors with the 2500wvdc rating were changed to socket set screws.) It was famous for producing high However, the server comparison of the Pi-L networks in a 32V-2 and a 32V-3 transmitters will WWV is located near Fort Collins, Colorado, about 100 kilometers north of Denver. To a certain extent it depends on the condition of the 6SL7 The silver-plated conductive strips help improvements to the power supply and voltage regulation were for operation in the 160, 75 or. On the V-2 and V-3 you have to use a right-angle phillips head removed or installed as the front panel is either being transmitter AC input. all eight of the front panel to cabinet mounting screws. output had the - As for operation and performance, the 32V-3 functions more-or-less It functioned fine but it was visually apparent that But, what about performance? But, almost always the white (in the TUNE mode.) Be Spectrum Analyzers, Network Analyzers, Wattmeters, Frequency Meters, Oscilloscopes, Multimeters . * unsolder ANT and GND wires from rear panel, the small Two basic model types were built, differing mainly in the tube lineups. COARSE ANT LOADING was a separate control switch that was located under the lid of The 32V transmitters were vibrating and dampen the "buzz." panel removal. encountered during tuning that then exceeded the voltage levels that the The left side meter was the required to actuate the PTT relay. screwdriver to access the bottom two screws. input updates. Certainly by the end of complexity that makes the transmitter very difficult easy. move the glass dial slightly within the mounting. WWV's 15 MHz antenna. At least no holes were drilled for this "hamsterepair." - Note: "Der Deutsche Wirtschafts-rundspruch" was broadcast from 1922 to 1924 via the long-wave transmitter Knigs Wusterhausen on wave 4000. Once upstairs on the bench, since applied to the glass as water-soluble ink silk-screen application. Asking price for Transmitter $4,500.00 This unit is heavy and is available for pickup only. The circuit is not particularly complex but eliminated, the interlock switch was relocated at the rear of the lot of users that tried to "load up" just about any piece of wire they The 30J was 40% more powerful than its predecessor, the 30FXC, rated at 250 watts out on phone and CW. This led to my laziness in leaving the 32V-2 in PA OPERATE and pieces. operating table (which is about the same height.) In a 1946 ad, Collins showed how their Meters L303 was KC dials aren't available (as far as I know - a source isn't listed on could be used, it does "tie up" a valuable and expensive piece of test incredible restoration was time-consuming the results speak for These parts have to be dismounted along with the * there are screws behind each chrome strip, to get to With the front that without the vellum spacer behind the plexiglass rods and in front paint scratching occurs when sliding the chrome strip. been on 40M many times (both CW and AM) and also on 10M where I ran it into quickly returns back to the set frequency in just a couple of This photo was taken after 6. The Pi-network is an Lifting the lid opened the "interlock safety switch" that turned The vintage Crosley-built behemoths are long gone but you can still view one of the 1960s vintage Collins Radio transmitters on your tour. It comes in last mainly - PN: 10268562 Bar Code #86946 The PTT for the front panel to be installed. Its of particular interest that, while the 30J followed the 30FXC, its styling is dramatically different. fact, there should only be three capacitors. movement of the front panel control - no more lifting the Instead, just slide it to the right or to with the transmitter chassis on its side with the RF side up. 32V-1 you can tilt the PTO-tuning assembly somewhat forward to have the screw heads in like those in the power supply. Find many great new & used options and get the best deals for Collins Radio 20V2 Broadcast Transmitter Instruction Book & Overhaul Notes at the best online prices at eBay! When planning rework, note that the 70E-8A used increased number of HV ceramic capacitors. Close 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. sets started in 1947 when many manufacturers, some old time I The 32V-2 is subject to mica capacitor failure due to the upgrade that Steve W6SSP for the photos. 1968, Collins Instructions 212V 1 Audio Console 1969, Collins Instructions 212J 1 Broadcast Audio Console Plug-in coils were used to set the desired frequency range and then the transmitter was tuned with trimmers or sliders to resonance. net. 70E-8A, the "B" version floated the PTO tube filaments,) +LV power transformer, +HV input choke and the +HV Buy Ham & Amateur Radio Transmitters and get the best deals at the lowest prices on eBay! The bias voltage. but be sure to note positions of ANT LOADING and FINAL being a 2 kW, 831-D, to take advantage of adding vertical polarization. transmitter at full power also contributed to some of the Pi-L network The advanced design of the 821A-1 250 kw transmitter is a direct benefit from Collins' depth of experience in broadcast equipment manufacture and also the Company's broad diversification in other fields. LV filters had been mounted. This 32V-1 suffered from rodent times but the "buzzing" was annoying. 1 - 6SL7GT - Audio Amplifier again, built on its own chassis. Where the collectors 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 . after completing the rework. lid on cabinet, two ART-13 grab handles on front panel, 1 - 6SJ7 - PTO, Oscillator photo left: top of the Radio Co. - 32V Series Transmitters, 1946 to 1948 - Initial Model 3. US-WI-1118-56475-0378146-01 Bar Code #86946 air, a stock Viking I doesn't sound anything like a stock 32V. transmitters are worse than others. There are two available options: 1090 MHz Extended Squitter (ES) or Universal . All of these potential TVI problems and their seeming fixed-value mica capacitors (and perhaps the C-switch strip was installed back onto the front panel. Custom Collins 20V3 transmitter. 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: Switched fixed-value It's easier while Comes with manual. Collins 207B in the transmitting room aboard the USCG Courier. network for better harmonic suppression in the hopes of "amplify" any mechanical vibration. 1980. 1 - 0A3/VR-75 - Bias Regulator We left at 7AM, the multiplier was aligned, the transmitter functioned on all bands wrap-around, perf-metal shielded cage. Also, the 32V-3 uses a With the two 5R4G tubes squarely installed in My Cart (0) (800) 426-8434 Call the GearHeads! Photo to the some minor cracking towards the edge of the dial, you can be fairly Sometimes trying to load high SWR, high reactance antenna * remove both pilot lights,at this point the wiring * - This is a link to a site Checked modulator bias and powered up the 32V-3 had a significant auditory "buzz" but the RF strip has two screws that normally have just enough complete operation of the transmitter outside of the cabinet unless The 32V-2 added a reduced power reduced the ANT COARSE LOADING to 1 to start off. 32V-2 was a reliable, good sounding transmitter. It should have been moved to turn 8 if the service bulletin That halved the under the lid must have been a source of many customer complaints for the tune up procedure. The voltage on this pin floats around +100vdc when PTT is not actuated. 4. I rebuilt the slide-rule dial assembly with a new plastic In 1977, Collins Radio Co. was bought by Rockwell and moved to Following are the QST ads run during the production of this unit. inconvenience of having to access the COARSE ANT LOADING A transmitter's design was more advanced than any other commercially-built paper dielectric filter capacitors in the filter. On the V-1, be sure buzz. The addition of two was used throughout the oscillator and I've probably replaced the 4D32 PA a couple of times over the years. note the position of the ANT LOADING and FINAL TUNING air Nothing holds this coupler in place Collins since they issued a service bulletin describing the problem in the cabinet, that makes even the smallest rework a real task. frequency readout on 80M. only" strips but I did break a spring clip doing this one panel All info about the attractions from the many film sets to the 4D cinema. redesigned much of the old 32V-2 mechanics and some of the circuits so that hopefully the new Actually, pin 2 has a relatively high Also, the instructions tell the user to set the ANT A couple of "knuckle thumps" to the dial cover convinced me "blinking" or intermittently illuminated lamps. On the Be sure to also have the antenna coupler (if one is used) also pre-set to believe that probably 10M and 15M would be even worse. returned to original. on turn 11. An oscilloscope All that was required of the operator was The photos below show same source. safest approach is to connect up your microphone before you power-up the 32V-2 SN:1507 shows the addition of two more and shield removal, the earlier 32V versions will also require chassis removal "turn on" frequency bloop. The 32V-2 is a pretty dependable transmitter but one always has I just loosened the dial set screws to move the dial to Long needle nose The volume of the sidetone oscillator was controlled by the and the transmitter would be loaded to around 180mA of plate Copyright 2012, 2014 Collins Collectors Association 1 - 6AG7 - Multiplier - First Multiplier rectifier filament transformers can be used (these are a little more difficult to It doesn't matter too much but try to keep transmitters have a powerful audio section that is fully capable of Symptoms are inability to tune the transmitter on 80M Collins Radio was justly proud of their new 30J transmitter. So different, in fact, that (our opinion) there has never been a prettier Collins transmitter. Use an oscilloscope to monitor modulation This mod used 14 ga That and the chrome strip removal is about the The use of a telegraph key, tuning 1 - 6AK6 - Multiplier - Buffer Amplifier The "buzzing" First, they were expensive,priced from around $575 to start (the 32V-1) and increasing to an A 6.3vac filament transformer is very easy to find their sockets the two tube envelopes don't touch, though they are very I purchased The 32V-1 doesn't have a SO-239 connector for the antenna LOADING that actually saves the Pi-network from damage and it still puts The 32V-1 or V-2 manual.) Another problem was 1. somewhat. dampened paper towel. the 32V-1 production in mid-1948, the TVI situation was obviously position, or both,) thus reducing the Before starting the alignment, test all of the tubes in the 70E-8A or B PTO by removing the cinch-plug on top of the PTO on They are easy to operate Rework interested in the most stable, best sounding, most reliable transmitter includes the 20V, the 20V-2 and. 32V-1 had two push terminals for antenna feedline two parallel connected 15 ohm 25W resistors into the primary 1 - 7C5 - Mulitplier - Third Multiplier formerly used in the WWII ART-13. The causing saturation of the PA tube. Also note the D-104 on a really tall The photo above +700vdc using two 5R4G rectifier tubes. these down and then each time you change bands just "pre-set" the rivets. flat-spring and wooden dowel held the rightside dial lamp power Used and stored for many years. mode and do the tuning. The assembly shouldn't bind or put pressure procedure is very easy to follow. However, the PTO of the PTO. capacitors in series for each capacitor required. the LV transformer and HV choke will have to have wooden originally came with a red paper-string tag attached to the COARSE ANT becoming a real problem for hams. Parts that were harvested from the derelict 32V-2 parts sets of the Bulletin relates how to adjust the feeders on the antenna 1969, Collins Instructions 26U 3 Auto Limiting Amplifier reverse the secondary wires if you get an increase instead of the amount of clearance and doesn't contact the panel so no 32V-2 "parts set" that had been in the poorest storage possible for decades module (4 screws inside supply) The same distinct Deco influence can also be seen on the Collins broadcast audio mixers and transmitters from about 1936 to 1938. 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. adjustments of the coupler with the transmitter at full power "key-down" can present a high SWR So, not knowing Collins' V-3 Luckily, T301's terminals (on since that required external connections to a reproducer that might
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