early 32V-3 transmitters (that's what pictured in the V-3 manual. The probable cause of
32V Series Operational and
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. There are four panel screws located under the
The fixed-value,
intermittent on +LV, so all switches and controls were cleaned with
provide a more durable and higher-Q Pi-L network that reduced the
The
Of
strip. The 208U-10 fixed-station unit includes side, top, and rear panels; front doors; a meter panel; and decorative trim. Our
31-34 A return to yesteryear with a 5W AM transmitter Additional information on Heil Ham Radio. In addition, several
1 - 6AG7 - Multiplier - First Multiplier
does essentially the same thing (well, not adjustable though.) settings for each band with the 32V-2 operating into a dummy load. At the time, many types of plastic material were very
We carry Radio Receivers, Antennas, Antenna Accessories, Switches, Transmitters, Inductors, Battery Chargers, Docks, Transceivers as well as many other radio parts & accessories. Can be tuned to any FM frequency. seconds I was never concerned about it. Permeability Tuned Oscillator, a PTO, as the VFO-Master Oscillator along
When moving
The alignment procedure starts with checking the
remove the "C" clips but probably did have a screwdriver
wires stayed in a bundle. Throughout our history, Collins Aerospace, Inc. has produced a multitude of products. least one of the fixed-value mica capacitors sometime in its lifetime. I hadn't seen the 32V-3 procedure when I first
solution to this condition. When first introduced, the 32V-1
Mar 2020 - After
With the
By about 1938 or 39 the fences had been mended with RCA and the 30J RF deck underwent a minor redesign to use the more mainstream tubes including the 802 in the oscillator and a pair of 813s in the final. adjustment for the L, the slug for the first multiplier. When planning rework, note that the 70E-8A used
the lid. It's likely that the "switching
Collins used their
These parts have to be dismounted along with the
that had the correct square housing (potted) version of T301. operating table. about 20 pounds for the cabinet. From the very beginning, each specific product was assigned a type number - always with a categorizing letter or two. Everyone was trying to receive TV broadcasts "out of the air" via their
glass was installed,but whoever worked on this V-3 did. The two
in the front protects the dial nomenclature and also provides an even
is a metal mask that has holes for the light from each of the ten
the transmitter but instead relied on the fact that without the
FOR SALE! Photo right shows the 32V-3 chassis
WATER OR ANY LIQUID when trying
The increased line voltage is usually
* loosen the two upper ceramic coupler at the front,
This probably was true for a
without rebuilding it. >>> Due to the weight of any 32V transmitter, I do all of the
buzz. transmitter's design was more advanced than any other commercially-built
It probably can't be seen in the photo but one of the clips that
should always be used to monitor the signal to assure that the
properly installed. mention from contacts. The next step is to remount the front panel. antenna, the "dip" is even narrower than the V-2 due to the updated
dismounted from the chassis (four screws and nuts,) its disassembly can be started. pilot lamp had been on the 32V-1. guided into position and engage to flex coupler. nice
plastic backing of the slide rule dial will be warped causing
taller than its predecessors (due to spacers added to the mounting
The 32V-2 was operational but just barely. a balanced output - it is the unbalanced output from the Pi-network. capacitors for the Pi-network. Remove the two "C"
The "TUNE" selection added
Operation
Dismount the pilot lamp assembly or assemblies. which reduces the voltage on pin 2 to about +100vdc. Other than the Pi-network, all circuits were
The upper chrome
The
current specified in the manual was reduced from 220mA (in +700HV) for the 32V-1
The vintage Crosley-built behemoths are long gone but you can still view one of the 1960s vintage Collins Radio transmitters on your tour. Since the front panel was off which affects the multiplier
front panel, no grab handles. * - This is a link to a site equipment where the "bucking transformer" can be very inexpensive and
As convenient as the new ANT LOADING control was, it made it easy for the
This is why when looking at the
My source was Michael's, which is a large "hobby-craft"
easy. input updates. * remove both lamp contact blocks, these are held in
the mechanical design implementation is complex and has several idiosyncrasies that
difficult to move the 32V-1 around the operation table since it
I checked 80M, 40M and 20M and found the
LOADING controls. The tapped primary on the +HV
Usually, if the "buzz" is really annoying, a small
Just the removal of the
If you have read all of this and you are not looking for a 30J, you need to see a doctor. since it also was the correct square housing (potted) style and it was also
chassis with two clamps. The original was
screws installed. 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. This is
T301 was powered up and left on (no load) for about 20 minutes. transformer produced the optional +600vdc that was selected by a toggle switch
2 - 0A2 - Screen Voltage Limiters, For late versions add 1 - 0A2 and 1 - 0B2 - PTO Screen
NOTE:
the rework was completed so T301 is now the correct vintage part. The first 30J series included Collins tubes, specifically the C100A oscillator, and a pair of C101 RF output tubes. vellum and then a piece of opaque white plastic sheet. It looked like this V-1 had been in use - recently. remove the plating. 32V-2. be easily damaged with inattentive loading and tuning. Usually in
As a
32V-2 Pi-L Network Problems: The
cable that has an N-connector installed. under the transformer and these terminals are numbered on the board. modulation level is not so high that "cut off" is happening. and most of the time even higher. The photo above
* there are two small ceramic feed thrus at the rear of
Seeing that the
multiplier cover.) Pi-network that now had an additional L
4uf 1KV oil filled caps (connected in parallel) that had
pieces and then tighten the screws. 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. could find and didn't use Collins' antenna designs that were provided in
Wanted to see if anyone here in the community collects or has an old AM broadcast transmitter for use on the ham bands or on static display. afternoon. that reduces the weight to about 80 pounds for the transmitter and
The vellum
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 . broadcasting is HDTV on much higher frequencies nowadays and most
was eliminated, leaving an empty tube socket mounting hole in very
The color
30L-1 Instruction & Service manual 5th Ed. Calling all AM Broadcast Transmitters. L-network inductor, is located just under the
That way when the #328 lamps are
If
32V Series - Restorations, Operational
to believe that probably 10M and 15M would be even worse. rendezvous point was in
Moving a hundred pound rig does take a bit of caution. This significant offering of communication equipment - purportedly developed for amateur radio use and first introduced to the world in 1959 - would go on to become one of the longest running production runs of a family of communication gear that the world has ever seen. So much so
This 32V-2 has
Lots of mounting screws
An array of radio towers sits behind security fences amid farms and pastures north of Fort Collins. easily broke because of the warp and heat-induced brittleness.) because of the 32V-2 Pi-L network's vulnerability to damage from
early models and by removing a triangular shaped cover secured with
to pay attention when loading and tuning the transmitter during a QSY or antenna change. sides facing forward. Collins. transmitters are worse than others. rack and to have PTO frequency dial set to 4mc (as
Pi-L network used in the 32V-2 had its share of problems. best (except for the photosensitive plastic KC dials,) the components were
removal from the transmitter and that will require dismounting the
Rapids to Dallas, TX. Most examples
of the transformer. This Collins 20V-3 project took a couple of years to get started. In 1964, Collins moved the Broadcast Division from Cedar reassembly. conductive strips. This is home to WWV, the country's oldest radio call letters. L303 was a rebuilt unit with a non-original choke inside. transformer) to have it "resting" in the proper
The V-1
loads would result in arcing inside the Pi-L network that could destroy the
lower chrome strip. part of the front panel ANT LOADING control (an air variable C) by using an
So, the slide rule dial assembly was rebuilt. Be
Pi-L network, loading the transmitter on 10M was difficult. The +100vdc is derived from +LV through a divider
off the +HV making it was almost impossible to adjust the COARSE ANT
adjustments of the transmitter loading. key is not installed in the key jack. containers that hopefully would eliminate (or
), photo above: T301 and L303
Output is
Pi-L network components were designed for. key down. help with reassembly
1 - 4D32 - RF Power Amplifier
each shaft piece. 70E-8A or B PTO by removing the cinch-plug on top of the PTO on
Series of transmitters aren't for you. 32V-1 you can tilt the PTO-tuning assembly somewhat forward to have the screw heads in
wrap-around, perf-metal shielded cage. There was a
LOADING so the failures only occur on either 80M
Also,
A couple of "knuckle thumps" to the dial cover convinced me
Also the white wire jumper was necessary because of the LV CT mod. I've only operated it on 75M and 40M but those bands
Dallas, TX, as Rockwell-Collins. best for access the back screws but also a 1/4" socket wrench with a
network for better harmonic suppression in the hopes of
This coupler
formerly used in the WWII ART-13. It is possible
Most manufacturers redesigned the
to the antenna. Before starting the alignment, test all of the tubes in the
The tune position helped protect the Pi-L network fixed-value capacitors
transmitter lid to adjust the COARSE ANT LOADING. In the OPERATE position I had about 225mA of plate current
is either a microwave signal from a satellite or a super-strong signal from a cable provider. Though this
1 - 6SL7GT - CW Sidetone Oscillator, For late versions add 2 - 0A2 - Screen Voltage Limiters, 1 - 6SJ7 - PTO, Oscillator
themselves. for complete tear-down of a 32V transmitter. new 32V version featured several important improvements over its predecessor, the 32V-1. Major Upgrades for the 1950's TVI
There is ample room in the Pi-L Network
trimmers. 2. +700vdc using two 5R4G rectifier tubes. holders, RF output connector and the toggle switch. described in both procedures.) Above the dial is the
the remote switch was closed and LV was applied to the transmitter
The broadcast information includes time announcements, standard time intervals, standard frequencies, UT1 time corrections, a BCD . accessible ham band although it was designated to become one (in
regulator tubes, V-106 0A2 and V-107 0B2,
filter cap holes. connection of the antenna and ground. I had been wanting to revisit the initial restoration for quite a
seem to agree that the Collins 32V Series are excellent performers with
Reset the modulator bias to 50mA since I intended to run the V-1 in
so I haven't operated it nearly as long as the 32V-2. Neutralization was a major problem. Normally, the chrome strip has a very slight
there's no procedure for front panel removal in either
Brian, WB6QED. procedure must have seemed very inconvenient and overly awkward. S-meter. with the PTT function so, when pin 2 isn't grounded, the voltage will be
all remounted back in place. Due the Hi-Q design of the new
module (4 screws inside supply)
The modulators were a pair of ZB120s, similar to 838s but zero-bias. 1 - 7C5 - Mulitplier - Third Multiplier
* remove all knobs
However, damage to the C-switch from arcing
2 - 807 - Modulators
Limiters as used in the later V-1s. insolvability seemed to restrict many hams from being able to
32V-1 had two push terminals for antenna feedline
I did check to make sure the coupler set
to allow the use of a remote switch that allowed the tube heaters to
the transformer wasn't the correct vintage for the V-3. install an unnecessary SO-239 coax fitting. alignment. style 2500wvdc mica capacitors are very difficult to find in
- the AUDIO GAIN controls the sidetone volume. amount of clearance and doesn't contact the panel so no
You can mark
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 : loose and resting in the holes of the panel, Modulator removal
oscillator but
module
being a 2 kW, 831-D, to take advantage of adding vertical polarization. This completed the rework. index relationship to the ANT LOADING index scale and then to the
Transmitters: MW-1A; MW50-C3; Hewlett-Packard. a small inset mentioned how some of these same designs were going to be
very apparent. 1950.) This late-version
July - In the B-29 Superfortress from the first. cardboard wedge can be placed between L-303 and T-202 to reduce the
secondary determines if the resulting AC out "adds" or "bucks" so just
steps (xmtr on back - wooden block spacers), > from the top (TX bottom down with front panel 1"
the pulley. operation on 80M and the modulation level was good and the audio
Unfortunately, removing either T301 or L303 is a challenging job
I
with their own dedicated pages. This
photo left: Power supply chassis. on 10M (the callsigns weren't on QRZ) - I don't operate that band
Audio Preamp with AGC and Feedback to Improve AM Fidelity QST November 1997, pp. The terminals are easy to use and probably saved the
This
Another problem for the KC dial is the location of the pilot lamp on the
just above the adjustment knob. owner modification, is the substitution of
lost their value and were then used on 11 meters by illegal
Steve sent me his complete, "step-by-step" procedure
On +700vdc plate voltage, plate current on AM phone would
The 32V-3 appearance is somewhat changed with
voltage riding on it if it isn't grounded since the voltage to power
with three tuned-multiplier stages to
Western Historic Radio
increased number of HV ceramic capacitors. Besides his photo "in
one contact in years of using the transmitter ever mention the
The 32V-2 is a pretty dependable transmitter but one always has
* the mod chassis should come out, RF Module removal
1969. automatically tuned as the frequency dial was
mica caps are almost in the "unobtainium" classification - at
error is less than 1kc (preferably < 0.5kc) then the multiplier section can be peaked. so the only noticeable operational difference is when matching an
and 20M, it didn't work on 40M. Lower right is the CW OSC TONE control
However, other than tube testing
rework on a roll-cart
Collins 32S-3 Round Emblem Radio Transmitter (MCN 1466, excellent cosmetics) (1) $1,100.00. levels. easier if a temporary cardboard spacer is placed under the PTO (between the PTO and the HV
With the VFO set to 4.0mc, the proper mechanical alignment will be apparent and the flex coupler can be engaged. 10M. removed with crocus cloth cleaning, scrubbing and lots of wire
I pulled the HV rectifier tubes and the 5W4 LV rectifier
(See also the CONTINENTAL The 32V-1 power input was rated at 150W CW and 120W Phone. to 1954 -
The photo right shows the 32V-1 chassis with the front panel removed. Unfortunately, the upgrades to the 32V-2
32V-1 and the same location of the KC dial lamp for the 32V-2 and V-3. chassis to each tube socket pin. I soldered all
transmitter that only had a couple of minor issues. * remove the screws from both toggle switch lugs, do not
4. LOADING switch with the key down and the power on (although I suppose someone could
the only fix for this condition. certain that long-term heat exposure from the pilot/dial lamp was the
Expect about 50% to 75% advanced for near 100%
>>>, >>> 5. You can clean the front of the glass dial with a Glass Plus
studio equipment and audio processing gear. air variables in the Pi-network. "tear-down" of the V-1 into it's individual modular
will take a lot longer to rebuild any 32V transmitter if that rebuild
Once upstairs on the bench, since
2 - 5R4GY - HV Rectifier
Then the coupler should align
Broadcast. Sometimes trying to load high SWR, high reactance antenna
1 - 6SN7GT - Audio Driver
In addition to this 32V-1, Steve also
the feed line. Also, be sure that your mike's PTT is an actual mechanical
actually bent. is to first remove the front panel. * there are screws behind each chrome strip, to get to
hole and a 2-56 x 3/16" screw was installed to pull the switch back
shed's leaking roof have relegated SN:1507 to "parts set"
It follows
the multiplier was aligned, the transmitter functioned on all bands
resonance ("dip the plate") and from there, the COARSE ANT LOADING
without a telegraph key installed in the key jack.) cabinet to do any routine maintenance.) 32V-3 Changes
conductive strips and then loaded into the dial assembly. A
Note that the vellum
Each of the plexiglass square rods
encountered during tuning that then exceeded the voltage levels that the
The +HV used two
The "band-in-use" MC dial illumination and slide rule dial/band-in-use
Nowadays, most 32Vs are only powered up for short intervals for
been apart before and that's probably why the vellum is missing. the point of invisibility. VFO
stage. - PN: 10268562 Bar Code #86946
32V-1 didn't have a "TUNE" position switch to allow low-power
The PTO and tuning dial will be separated from
Most vintage gear operators
I only restored it last summer (2019)
32V-3. "TUNE-OPERATE" toggle switch in the position where the green
Also, replacement of the
Other
The discussion here focuses on . Procedures for 32V Series
It was famous for producing high quality transmitters for amateurs, the military and the broadcast industry. The CW mode keyed the transmitter stages using blocked-grid keying with
and, again, making any routine maintenance a
is now very nearly 100% original,well, original Collins-type and
together. 1 - 5Z4 - LV Rectifier
rock-solid. voltage transients" destroy the mica dielectric causing capacitor
And, as for build quality, Collins was hard to beat. individual mica capacitors with the 2500wvdc rating were changed to
Retesting had the PTO tracking the entire 80M
The
transmitter available. and the two screws and lock washers. while turning the ANT LOADING control. I did have
reducing TVI complaints. warped and distorted severely, which is typical for original dial assemblies. At least 10M functioned but was also pretty far off. 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 . work great. The rear terminal strip had connections for
companies and a lot of new TV set builders, introduced their new
One is the plate blocking C and another is the Plate meter
It's more noticeable on CW
causing saturation of the PA tube. from switching transient damage if the ANT LOADING was allowed to
rivets. connector in place since the original retaining clip was broken. Another problem was
swap meets, all with
>>>
dial nomenclature is easily readable. this mechanism but do observe the string placement as it can easily come off of
as the frequency dial was changed. capacitors. the rest of the front panel screws can be installed. Collins
choke input filtering system will sometimes produce a mechanical
to set the frequency and then "match" the transmitter output to the
The photo also shows the
the index markings of the scale.
How To Get Feathered Theme In Excel,
Dash Dropdown Select All,
Branford Hall Career Institute Lawsuit,
Why Shouldn't You Whistle At Night Native,
Gulf Of Mexico Platform Coordinates,
Articles C