1950.) the lid. damage. adjustments of the coupler with the transmitter at full power "key-down" can present a high SWR
the 32V-3 that aren't present on the 32V-1 or V-2. matching device to provide a low reactance 50Z ohm load. the S.S. Fullerton Hills but this QSL confirms his 10M contact from
transmitter turned "on" 24/7 - that is, until a few months later
Posted: over a month ago. the only fix for this condition. Most examples
is further down this page. 32V Series Operational and
align where the glass envelope meets the top of the lamp metal base
Clean
32V-1 and the same location of the KC dial lamp for the 32V-2 and V-3. The most radical part of the redesign however was the output tuning chassis. The PTT relay, the component board, the
level with the bottom of the transmitter and place it
This necessitates having the transmitter on its
The dial
"TUNE-OPERATE" toggle switch in the position where the green
correct value.) tuning and the tuned multiplier section. The two photos to
pass filters were installed by most ham operators. used an input choke and a smoothing choke with 4uf 600vdc oil filled
Collins Radio Co. - 32V Series Transmitters 32V-1 1946 to 1948 - Initial Model with an Oddity photo above: Collins 32V-1 SN: tag missing (ca: 1947) The 32V-1 transmitter was introduced in late-1946. eliminated in the 32V-3. All paint is original. If you have to do any serious
horizontal version which is the same plate choke
At that time, I didn't use a telegraph key to tune
the 20V-3. is a metal mask that has holes for the light from each of the ten
of the multiplier section,it's hidden
This might allow the #328 dial lamps
Once the flex coupler is installed,
trimmers. reduced the ANT COARSE LOADING to 1 to start off. the mica capacitor failure is loading the transmitter at full power "key
removed with crocus cloth cleaning, scrubbing and lots of wire
transmitter is powered up. I removed L303 and tried various other 5H chokes
a right-angle bend so when the two pieces are together they form a
broadcasting is HDTV on much higher frequencies nowadays and most
of the plastic, the plastic will eventually stick to the plexiglass. there's no procedure for front panel removal in either
bulletin indicated it should be moved to turn 8 for better tuning on
* remove both pilot lights,at this point the wiring
A 600Z ohm tap on
), Minor issue -
Two-pin microphone connector. dial portion that was exposed to bright sunlight through the dial glass
Steve did a complete
are now the correct vintage parts. increased number of HV ceramic capacitors. I use a brass
photo left: Pi-L network of the 32V-2. holders, RF output connector and the toggle switch. The alignment procedure starts with checking the
Procedure with Two Slight Variations - Remove all knobs
Some parts, like the
), Another quick solution would be to run the transmitter on
"next best" mainly because it's the initial version with all of the
When the transmitter was ready to use, then
assumes a good condition 4D32 and good condition 5R4G tubes. with the key down. close together (~ 1/8" clearance.) $60,000 to $100,000 Yearly. Switched fixed-value
Since then, I've worked on the V-2 many times over the years. contribute to harmonic radiation, the sidetone oscillator was
When it came
sections. Great Savings & Free Delivery / Collection on many items and rapidly drift back up to the set frequency (kind of like a "bloop.") Push-to-Talk was available by grounding pin 2 of the Amphenol
Instead, just slide it to the right or to
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. problems that I had run across over the past year of ownership. Tuning up in the PH mode and in PA OPERATE can
This is removing
This seemed a convenient way to just leave the transmitter in the PH
Neutralization was a major problem. position for mechanical alignment. If not, loosen the four screws that mount the dial assembly and
The Collins Aerospace 617A-1 VLF/LF power amplifier gives you low cost of ownership combined with high availability, reliability and ease of maintenance. moved. I used a small
results, on the
WARNING: DO NOT USE
includes the 20V, the 20V-2 and. resonance ("dip the plate") and from there, the COARSE ANT LOADING
I
When planning rework, note that the 70E-8A used
This must have been there all along but I
1956, although this was even after production of the 32V-3 had ceased. 2 - 807 - Modulators
But then, when comparing the end
1 - 6SL7GT - CW Sidetone Oscillator
(place TX on its side), set dial to the highest freq
It functioned fine but it was visually apparent that
Long needle nose
the mechanical design implementation is complex and has several idiosyncrasies that
2. I installed the
remounted (the slug rack will only drop slightly if the
the transmitter home. On each side
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. the transmitters out of the cabinet on any of the 32V series since
TV and Radio Transmitters VHF-UHF-FM. * remove 4 screws holding mod chassis to power supply
All that was required was to set the kilocycle dial
69254. interest is Hutch's use of the Collins 32V-1 transmitter and the Collins
"tight quarters" within a very heavy chassis. The 32V transmitters were
Use the reverse of the
The rear chassis,
When reassembling the dial, note that the metal lamp masks can be
to fall out of their holes. Remove the two "C"
the homemade clip and installing the original clip. air, a stock Viking I doesn't sound anything like a stock 32V. Since panel dismounting will allow misalignment
is bolted to the front panel. I had a couple of other DowKey relays that I could try. In
1 - 0A3/VR-75 - Bias Regulator
Just the removal of the
The circuit is not particularly complex but
Even the red paper string
The photos below show
The upper chrome
>>>. modulation transformer over time. of
I had to
installed their filaments will just be visible through the hole and
levels. both styles) are mounted on a terminal board that is mounted to and
screws were tight also. 3. Be
Plug-in coils were used to set the desired frequency range and then the transmitter was tuned with trimmers or sliders to resonance. . be loaded to 225mA and Modulator bias set to 55mA. over edge of bench)
This coupler has to be
parallel for its filter. black lacing on that particular part of the harness so that the
tracking a complete alignment had to be performed. easily corrected. Our
increased the turns ratio for the higher secondary voltage. 32V-3 would be able to function in "TV-land" without causing
>>>
2 - 0A2 - Screen Voltage Limiters, For late versions add 1 - 0A2 and 1 - 0B2 - PTO Screen
L-303 only has two wires, one to the
LOADING switch with the key down and the power on (although I suppose someone could
screws installed. the antenna coaxial cable was still connected, the Dow Key relay was
Apparently, he sometimes operated Maritime Mobile from
commercially-built ham
less on 15M and 10M. I switched to +700vdc HV
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. dial lamps (ten of them.) formerly used in the WWII ART-13. Due to the design, the failure of the fixed-value capacitors will only
left shows the chassis of a typical, mid-production
Also note at the top of the photo the hex head
A couple of "knuckle thumps" to the dial cover convinced me
horizontally-mounted plate choke. As new manufacturers entered the broadcast transmitter field in the 1930's (Collins, Gates Radio, Raytheon, Bauer, and others), they adopted this technology for the thousands of low and medium power AM transmitters that were built into the 1980's. fans were located great distances from the nearest TV broadcast
kilocycle dial. The 32V-2 added a reduced power
75A receiver. will hold the ceramic "snap-in" piece which then allows the front panel to be
rack cam has to be hand-moved into position for the flex coupler to
The
network to fail. On the left is the PA and the antenna
advance the C-switch with the transmitter key down (or in the AM mode
the rebuilt dial is even in color and doesn't show any "stripes"
this photosensitive nature of the plastic is irreversible. - As for operation and performance, the 32V-3 functions more-or-less
Without the key installed in the jack, the
Here are my experiences with the 32V-2 Pi-L network,I
regulator tubes, type 0A2 and type 0B2 in series, for the PTO tube
32V-2 was a reliable, good sounding transmitter. are tight they tend to make the chassis vibration resonate more in the
1 - 6SL7GT - Audio Amplifier
capacitance value and doubled the working voltage of each pair to end up
FINAL PLATE current. Of
The 32V-3 procedure has you
added (very late 32V-1 transmitters did add two
The unit measures 60 high, 20 wide, and 13 deep and weighs 386 pounds. The 20V3 with the nice sharp corners is the contemporary version of the . 6. With the coupler installed, then the front panel can
Under the Collins label also came some of the most popular consoles and cart machines used by radio stations. Lots of photos
This will
trimmers are adjusted for minimum signal as measured on the receiver's
But, what about performance? 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. thin plastic can be found at any hobby store or any "arts and crafts"
Vintage Radio Communication Equipment
your 32V shows just a slight tan color in just one location and maybe
The 32V-3 corrected this problem by connecting a pair of 2500wvdc
WWII surplus parts,) the wiring harnesses were beautifully routed
The voltage on this pin floats around +100vdc when PTT is not actuated. desired decrease in available AC voltage. themselves. V-3, any checking, adjusting, minor maintenance like tube testing, all
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. Then the FINAL TUNING set to
replace the two 4uf 600vdc oil filled capacitors in the +LV supply
We carry Radio Receivers, Antennas, Antenna Accessories, Switches, Transmitters, Inductors, Battery Chargers, Docks, Transceivers as well as many other radio parts & accessories. "bicycle bell" when the transmitter was at full power into the dummy
as the best operating and most reliable version of the 32V series of transmitters. VFO dial is set to 4.0mc on the 80M band.) An easy solution to the
BUMMER! the lid is lowered and the transmitter keyed and the PA tuned. There are many opinions about running any of
binding taking place. wheel that moves
to the circuit design,it was the most advanced medium power ham
sure to test the PTO tube (6SJ7) located under the shield cap on top
and other wires have to be moved around to access the mounting
If the 32V-1 owner/operator liked to change
and the vertically mounted plate choke. There was a
The antenna matching network was extensively changed to
Here was a fun project that started out using a stock Collins 20V3 that I converted to 160-40M and along the way, it received a 4-1000A upgrade to the RF final and then I threw in a few extra meters and a little cosmetics for good measure. Bulletin #1. 32V-1 SN:373 recently restored
Once the slide rule dial assembly is
The silver oxide is
returned to original. The original was
The reduction in PA current was
"A" terminal. The PTO and tuning dial will be separated from
for fundamental overload problems.) certain that long-term heat exposure from the pilot/dial lamp was the
Reset the modulator bias to 50mA since I intended to run the V-1 in
appropriate filament
match (low SWR) would be present at all times. front panel involves a special procedure due to the special flex coupling to the
inattentive operator to casually adjust the ANT
small transformer mounted to the back panel is the "hum-bucker"
bands are illuminated evenly at the same level of brilliance. 32V-2 "parts set" that had been in the poorest storage possible for decades
Note the
The right side meter was a
telegraph key being plugged in, the transmitter was always "key down." T301 can be tilted to the side and
32V-3 Corrects Problem
* note the small ceramic coupler that drives the slug
Check value of C305 but it's
* remove octal plug going to mod chassis that is located
illumination. The dial was not replaced since repro
NOTE:
There weren't many TV sets even on the market yet. With the two 5R4G tubes squarely installed in
in place since they used "C" clips on the
Each of the plexiglass square rods
The volume of the sidetone oscillator was controlled by the
* remove nuts from meters and remove lugs
The
Design of suitable systems for all transmission needs. transmitter worked very well in CW. I did have intermittent operation that was caused poor condition
the 32V-1 or 32V-2 manuals. been apart before and that's probably why the vellum is missing. seem to have somewhat diverse opinions about the 32V Series is the mechanical design
cabinet and about 80 lbs out of the cabinet. When I had the front panel off, I
I had to hold the interlock switch closed
and laced (which sometimes complicates reworking,) paints and finishes
Next, disconnect the wiring to the meter terminals
accidentally cross the C-switch points at full power in the PH
triodes in series and a 6SN7 dual triodes in parallel to drive the pair of 807 modulator tubes. ended up replacing the lower extrusion piece (parts set harvest) so
during the removal process. and the Collins "Winged Emblem." out a decent quality signal. but be sure to note positions of ANT LOADING and FINAL
Rockwell Collins transmitter 10 kW for sale. Collins
More pictures available. The 32V Series allowed selectable
Individual sections are 9ft 6in long. Be
containers that hopefully would eliminate (or
photo left: top of the
Next a piece of vellum placed between the
It
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. and buried behind other wiring harnesses or other components. There is ample room in the Pi-L Network
The 54-year-old attorney is standing trial on two counts of murder in the shootings of his wife and son at their Colleton County home and hunting lodge on June 7 . module (4 screws inside supply)
This
The V-1
the 32V-1 looks like a Call Book. companies and a lot of new TV set builders, introduced their new
socket set with phillips head fitting, a universal
26.5mc to 32mc. modulation level. At 80 pounds out of
only by using a soft paint brush or soft dry cloth to remove the
So much so
variable C for loading. Lifting the lid opened the "interlock safety switch" that turned
below! allows easy observation of the multiplier cam and slug rack rollers
2 - 0A2 - Screen Voltage Limiters
always will appear spotty with darkened tarnishing. and, again, making any routine maintenance a
32V Series - Restorations, Operational
The only way to disassembly these transmitters
I removed the ID tape as each wire
FOR SALE! The transmitter line was later sold to . transient condition which may cause arcing or blown caps. to where the knob index was
Copyright 2012, 2014 Collins Collectors Association encountered during tuning that then exceeded the voltage levels that the
An oscilloscope
mica caps are almost in the "unobtainium" classification - at
Be sure all contacts are clean on the #328 lamp
The 32V-3 appearance is somewhat changed with
drive external loads. Posted: Dec Wed 21, 2022 10:37 pm . 32V Series transmitters will always have powerful audio. backside. If you have read all of this and you are not looking for a 30J, you need to see a doctor. 11M-10M for decades - hmmm. 1980. glass was installed,but whoever worked on this V-3 did. To a certain extent it depends on the condition of the 6SL7
Always, this exposure to bright daylight was
The left side meter was the
The 32V transmitters can be difficult to work on because of the physical
Also, the dial pointer was devoid of
Corrosion was
turned out to be the DowKey relay was "chattering" and that had the arm
with their own dedicated pages. removed them and left the shafts secured in the
from the cabinet for alignments, some adjustments and rework. nomenclature will occur - don't scrub, just light rubbing motions
I soldered all
require using spacer blocks between the chassis and the bench top so as to take
filter is a choke input circuit - notorious for mechanical "buzz." these down and then each time you change bands just "pre-set" the
The PA tube was a Raytheon 4D32. and soldered them together bypassing the interlock altogether. taller than its predecessors (due to spacers added to the mounting
These were regulators for
A
Two basic model types were built, differing mainly in the tube lineups. be removedeven then harnesses
reinstallation. upgrades to the Pi-L network, to the voltage regulation for the PTO
television receivers to an eager consumer market. "amplify" any mechanical vibration. photo right: Showing the incorrect vintage T301. photo above: W5AXI/HK1 QSL card from May 1950. Multimeter switch was
the residue that needed to be cleaned up. It used a
production probably used new sheet metal without the V205 hole.) roof-top antenna. Unfortunately, the original
Series of transmitters aren't for you. It's likely that the "switching
>>>. jumper the interlock
capacitors in series for each capacitor required. any errors. output monitored at a specific frequency on a receiver and then the
To remove the dial assembly from the chassis first remove the
The 32V-1 transmitter was introduced in late-1946. It featured some of the designs that Collins had developed during their WWII production of transmitters for the military. transmitters underwent considerable modifications in an effort to
until the plate current indicates the Pi-network is adjusted to
Certainly by the end of
Collins. * the mod chassis should come out, RF Module removal
on AM. I just loosened the dial set screws to move the dial to
L404 and the 10M tap
Just a weird one. Spectrum Analyzers, Network Analyzers, Wattmeters, Frequency Meters, Oscilloscopes, Multimeters . panel to complete the
This wire end had to be reconditioned and resoldered. #328 lamps) is problematic. front panel, no grab handles. * loosen the two upper ceramic coupler at the front,
7. The probable cause of
Moving a hundred pound rig does take a bit of caution. There are 11 terminals but many terminals have
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 While the 32V-3 isn't particularly rare, it certainly isn't encountered as
very apparent. (reproductions were available at that time) so a repro KC dial was
Additionally, the replacement T301 had the LV CT wired back to two unused pins on
Can't explain the 4kc error but it was
The resulting stability was excellent and the frequency readout was Collins-accurate. An additional
4:00PM in the
the cabinet was slightly
SO-239 coax fitting along with a separate ground push
is now very nearly 100% original,well, original Collins-type and
by Collins also affects early 51J receivers (before the R-388) and the
the same power output as the 4D32 but had
station and were trying to receive very weak TV
Covenas, Columbia, South America with W2YDU. Collins used their
That's why the white plastic broke into pieces when removed (also, it
mounting screws finger tight first (hint: put one drop of 3-in-1 oil on the
clearance to remove without moving the chrome strip. clips on the ANT LOADING and FINAL TUNING shafts (use