the ratio and the secondary voltage. You'd have to have the receiver BFO on or be looking
rectifiers and the other to the filter capacitor. capacitors in series for each capacitor required. chassis components in order to better access parts,
Unfortunately, removing either T301 or L303 is a challenging job
He could just "strip and connect. The PTT
better than any other commercially-built ham transmitter? Now playing: pulsing sounds, every second, followed by . antenna matching network is accomplished with a two-piece,
comparison of the Pi-L networks in a 32V-2 and a 32V-3 transmitters will
possibility of harmonics making it to the antenna. do it. This doubled the voltage rating to 5KV. +LV.) panel is removed then the correct orientation of the
varying degrees of "hamstering," parts salvaging or with condition
with two small screws. WARNING: DO NOT USE
WWV's 15 MHz antenna. in place since they used "C" clips on the
pulling it off the shelf for examination of the rear it was noted
because one of them was leaking oil,quite a lot of oil judging from
the S.S. Fullerton Hills but this QSL confirms his 10M contact from
Finally, I found a good condition
Don't
modulation level is not so high that "cut off" is happening. mounting screws finger tight first (hint: put one drop of 3-in-1 oil on the
When it came
versions. I had just recently found a
I then wrapped
The equipment is 69 inches high, 42-9/16 inches wide, 29-29/32 inches deep, and weighs 1780 pounds. I removed the 14ga wire and
panel, no grab handles, 32V-3 - No top
This
strip has two screws that normally have just enough
This. 2. except the spring tension of the clips and the front panel being mounted. You'll have to manually move the
COLLINS 208U-10. the transmitter had the appearance of being recently in operation, a
When reassembling the dial, note that the metal lamp masks can be
I just loosened the dial set screws to move the dial to
1968, Collins Instructions 212V 1 Audio Console 1969, Collins Instructions 212J 1 Broadcast Audio Console
Multimeter switch was
When placing the rear support
+240vdc
Continental is essentially the only manufacturer of high power shortwave broadcast transmitters in the USA, still manufacturing Shortwave Transmitters at power levels of 100 kW, 300 kW. explosively. You should actually be able to
the COARSE ANT LOAD is preset on position 6 to load on 10M. reduced the ANT COARSE LOADING to 1 to start off. NOTE:
1 - 6AG7 - Multiplier - First Multiplier
Always be cautious if you are adjusting the ANT LOADING anywhere outside
The two photos to
4D32) was 80 watts at 180mA PA I. 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! Another strange occurrence that really wasn't a problem, just kind of
I hadn't seen the 32V-3 procedure when I first
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. The most radical part of the redesign however was the output tuning chassis. Limiters as used in the later V-1s. load. The iron was OK. But The entire metering board was kaput. the 32V-1 looks like a Call Book. L303 was
new rear vellum piece and the new white opaque plastic piece. Covenas, Columbia, South America with W2YDU. My Cart (0) (800) 426-8434 Call the GearHeads! turning a dark brownish-red color. More pictures available. might be to install the 32V-3
This model was designated the 30J-18. 200mA (in +700HV) for the 32V-3. * remove both lamp contact blocks, these are held in
one contact in years of using the transmitter ever mention the
Most
Uses three tubes each tube as is values $1,900. 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. becoming a real problem for hams. transmitter worked very well in CW. This is
several times and exhibited typical "hamster" repairs and
While the 32V-3 isn't particularly rare, it certainly isn't encountered as
32V-2 SN:1507 shows the addition of two more
The 208U-10 transportable unit is 69 inches high, 39-3/4 inches wide, 27-1/4 inches deep, and weighs 1650 pounds. 11 watching. On the right side is the speech amplifier and modulator,
and tried 80M with no problems. thin plastic can be found at any hobby store or any "arts and crafts"
bypass,
with the transmitter chassis on its side with the RF side up. allows easy observation of the multiplier cam and slug rack rollers
Luckily, most rigs aren't as bad as
left shows the chassis of a typical, mid-production
problem
photo above it appears that there are "stripes" in the dial background. Just a weird one. causing saturation of the PA tube. 31-34 A return to yesteryear with a 5W AM transmitter Additional information on Heil Ham Radio. bands are illuminated evenly at the same level of brilliance. Also, the ANT LOADING control
tube were added to
the +600vdc HV position. 32V-2 transmitter shown in this write-up since 1993, about 27 years. LOADING across a C-switch point with the key down (while
dark areas in the dial background. dial. 29288, Telefunken, 2 tubes, oak case with RTV stamp, height 11 2/5 in. Good condition originals (unobtainium)
the transformer wasn't the correct vintage for the V-3. could occur on any band. WWII designs had been implemented into their commercial transmitters and
32V-2 is the most vulnerable to damage. Collins
I had to hold the interlock switch closed
flex coupler will be obvious when doing the
located on the rear chassis panel. The 32V-1 was ready to
N-connector bracket to access T301 and L303 mounting screws. illumination. The adjustment is easily accessed on the
They may be downloaded and used privately not for publication or internet use. only"
When the coupler is in place then complete the panel
always will appear spotty with darkened tarnishing. SN:1507 (photo above-right.) from the cabinet for alignments, some adjustments and rework. Since I had removed the CT mod wires (the 14ga plastic insulated
store-chain that has shops almost everywhere. equipment where the "bucking transformer" can be very inexpensive and
Plug-in coils were used to set the desired frequency range and then the transmitter was tuned with trimmers or sliders to resonance. net operation or similar infrequent use. A plate-modulated AM transmitter must develop audio power nearly equal to 78 percent of the RF carrier power to achieve 100 percent modulation. retains the fiberboard dial lamp power connector is broken. that time period.). of the interconnecting cables an easy task. associated shafts come out with the front panel, do not
Note that there are two sets of three stacked fixed-value mica
off the +HV making it was almost impossible to adjust the COARSE ANT
Design of suitable systems for all transmission needs. bias voltage. installed their filaments will just be visible through the hole and
damage. coil-slug rack carriers in the frequency multiplier section and full permeability tuning
transmitter at full power also contributed to some of the Pi-L network
doesn't have to be lifted - just slid. * unsolder two wires going to two ceramic feed thrus at
any of those subconscious worries. With the coupler installed, then the front panel can
time. A turns-counter indicator was viewable through a small hole
industry. current specified in the manual was reduced from 220mA (in +700HV) for the 32V-1
to the antenna. Wide
The 32V transmitters can be difficult to work on because of the physical
Always good audio reports on AM and T-9 on
operating table. voltage. clearance to remove without moving the chrome strip. On the
be snapped into place. transmitter that only had a couple of minor issues. of the relay bouncing on the transmit contact of the DowKey which was
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. that are selected to work in parallel with the ANT LOADING
32V-1 or V-2 manual.) was the broken retaining clip for the upper chrome strip. necessary (or so I thought.) plate voltage is caused by L-303 and also that the HV power supply
day" this left a significant heat source very near to the KC dial. voltage transients" destroy the mica dielectric causing capacitor
Network. "32V-2 Service Bulletin #1" addressing these problems,
The +LV (no load) and the tube heaters will still be slightly
paint scratching occurs when sliding the chrome strip. Without the key installed in the jack, the
The rectifier tubes were
related position of the associated knobs. designed for 115vac input and most home service now runs at least 120vac
Watch pin 2 on the Amphenol microphone
but T301 was a replacement from an earlier version, probably a V-1,
the slug rack rollers are positioned before you remove
minimize harmonic radiation. located by the Pi-L network (on top of the
sure to check Pi-L network air variable C positions in
Use the reverse of the
tuning up the 32V-2. This is removing
removal of the front panel in the 32V-3 manual. The upper chrome
end-point-error. 1 - 6SN7GT - Audio Driver
rebuild. still connected to the rear terminals and the receiver standby wires
70E-8A, the "B" version floated the PTO tube filaments,) +LV power transformer, +HV input choke and the +HV
parallel for its filter. 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 . 26.5mc to 32mc. Overall, the 32V transmitter does seem to
Continental purchased the Collins Radio line from Rockwell Industries on October 1, 1980, incorporating its line of FM and low power AM transmitters. found it set to 100mA which is about double where it should be. The major
the air" a few times. The CW mode keyed the transmitter stages using blocked-grid keying with
jumper the interlock
loose and resting in the holes of the panel, Modulator removal
accessible ham band although it was designated to become one (in
and "snap-in" the proper position. "blinking" or intermittently illuminated lamps. Difficulty of Rework - If
be removedeven then harnesses
transformer were changed to
Also, note the
The same distinct Deco influence can also be seen on the Collins broadcast audio mixers and transmitters from about 1936 to 1938. which requires the user, when tuning the transmitter - especially into
Then, the two #328 dial lamp contact retainers can
Front panel installation has to be performed
a right-angle bend so when the two pieces are together they form a
sensitive to UV light and were very prone to a dramatic color change in areas exposed to
Collins broadcast transmitters. There are two available options: 1090 MHz Extended Squitter (ES) or Universal . assures good grounding and certainly makes any routine tube checking
choke input filtering system will sometimes produce a mechanical
It's
location is the subject of the 1956 Collins 32V-2 Service
Both meters now used shielded cables and had filters on their terminals. and rapidly drift back up to the set frequency (kind of like a "bloop.") vibrating and dampen the "buzz." Lots of mounting screws
amount of clearance and doesn't contact the panel so no
Check the knob
line" from them. the left. Whether the "high line" voltage really causes any problems is
Normally, the chrome strip has a very slight
The circuit is not particularly complex but
That and the chrome strip removal is about the
Many TV
early models and by removing a triangular shaped cover secured with
WWII surplus parts,) the wiring harnesses were beautifully routed
shields - lots of work that usually has the owner postponing necessary
Note
(See Dave Hultsman's explanation for the numbering system, 1 - 6AG7 - Multiplier - First Multiplier
replace the two 4uf 600vdc oil filled capacitors in the +LV supply
It's more noticeable on CW
(not grounded) to allow the PTO tube to work with the separate filament
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. externally. pilot lamp had been on the 32V-1. safest approach is to connect up your microphone before you power-up the
It
as the frequency dial was changed. series pairs that increased the working voltage to 5000vdc. small transformer mounted to the back panel is the "hum-bucker"
Pahrump and Virginia City which happened to be Tonopah, Nevada. stage. Collins used their
the transmitter setting right-side-up on the bench. Once the end-point
One new
The front panel removal procedure is covered in the
"bicycle bell" when the transmitter was at full power into the dummy
The clips in the multiplier side of the coupler
32V-1 with other station equipment. 6. operator to hold the key down for tuning and loading functions. front panel side. Besides his photo "in
complaints never-ending. the rear terminal strip (pins 13 and 14) which then required a jumper to
comes loose
from 1946 - 1954, 1946 32V-1 Artwork from 1947 Ad in ARRL HB, Collins
I have estimated a year or decade. them the strips can be tapped (using a piece of hardwood
At least no holes were drilled for this "hamsterepair." pieces. transmitter AC input. series-connected 0A2 tubes as screen voltage limiters which
upgrade into the 32V-2. The alignment procedure starts with checking the
Retesting had the PTO tracking the entire 80M
includes the 20V, the 20V-2 and. The story of a rescue and Restoration of a Collins 300G Broadcast Transmitter The Pine Board Project QST January 2018 pp. the interlock switch which was damaged. The photo above shows the 32V-1 after completing the
With the VFO set to 4.0mc, the proper mechanical alignment will be apparent and the flex coupler can be engaged. 1 - 6AK6 - Multiplier - Buffer Amplifier
So, not knowing Collins' V-3
There are .250" hex
(chassis mounted pot adjustment) would have to be set lower to 50mA
matching network above and the multiplier section below. That halved the
steps (xmtr on back - wooden block spacers), > from the top (TX bottom down with front panel 1"
contacts about every three months. then two 5vac
infestation and a lot of corrosion. screws installed. connected to chassis-ground) the -75vdc "swamps" the 6.3vac and it
transmitter. Be
Specifically, the photo shows the southern antennas of WWVB as I departed the site on Thursday, August 28, 2014; for those of you who got that detail, extra credit-!. and L303 (HV input choke.) was changed so that it now adjusted both "coarse" and "fine"
Unfortunately, when
on +600vdc and since the V-1 doesn't have a "TUNE" position, I
There weren't many TV sets even on the market yet. The Collins Radio Company* was founded in 1932 by Arthur A. Collins * at Cedar Rapids, IA. transmitters are worse than others. They are easy to operate
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. Front panel removal has to be done with care since
On October 1, 1980, Rockwell spun the Collins Consequently,
The 0A2s are located
roof-top antenna. panel to complete the
Once everything is clean and assembled with new pieces for the
This makes installing all
1956, although this was even after production of the 32V-3 had ceased. OFF. are push-terminals. originally came with a red paper-string tag attached to the COARSE ANT
There are many opinions about running any of
But, what about performance? multiplier stages. stands use mechanical switch contacts for PTT (as do most mikes from
mode and do the tuning. cosmetic condition but its operational condition was unknown. up in the CW-TUNE mode and being cautious of the ANT LOADING C-switch
panel
In addition to this 32V-1, Steve also
It turned out that the dial assembly had been worked on in the past
Note the lack
Close
Remove control
center of the chassis has to be dismounted, the 5Z4 and 0A3 have to
On the left is the PA and the antenna
after completing the rework. approximate setting and then switch on the PLATE +HV and dip the FINAL
and they are perfect since the resulting AC output is about 115vac (if
a few hz and
the associated coupler set screws are accessible and
that had relegated it to "parts set" status. With the two 5R4G tubes squarely installed in
perfectly. All that was required was to set the kilocycle dial
antenna, the "dip" is even narrower than the V-2 due to the updated
Parts and technical support available at Continental Electronics.
I've only operated it on 75M and 40M but those bands
eliminated, the interlock switch was relocated at the rear of the
of CW rotation assuming the index scale is 0 to 180. Depending on how much adjustment is
The audio response was 200hz to 3000hz. T301 and L303 replacements are installed first. Then the transmitter chassis is "rolled"
I made a
Also, a weird lash-up using a
single C303, frame T301 and L303 and no PTO screen
horizontally-mounted plate choke. Be sure
These two regulator tubes
1 - 6AK6 - Multiplier - Buffer Amplifier
horizontal version which is the same plate choke
dipole fed with ladder line (balanced) to a 50Z unbalanced output. S-meter. couplers. Note the stack of four fixed-value mica capacitors under
tube. Front Panel Removal. or high quality reproductions (non-existent at this time?) Also,
Each of the plexiglass square rods
* remove 4 screws attaching RF module to power supply
"interesting" quirks like the "under the lid" adjustment of the
problems that I had run across over the past year of ownership. LOAD switch shaft warning the operator to only use position 6 from
replacements. the lid is lowered and the transmitter keyed and the PA tuned. connecting wires will keep it from moving too far. I
connection of the antenna and ground. This had me motivated to correct
module
A 600Z ohm tap on
4:00PM in the
All
removed or installed as the front panel is either being
32V Series - Restorations, Operational
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. moved the COARSE ANT LOADING switch from a chassis mounted component
There is ample room in the Pi-L Network
very apparent. It was in superb
The
most of the
32V-2 Pi-L Network Problems: The
rack cam has to be hand-moved into position for the flex coupler to
transmitter available. An examination
When planning rework, note that the 70E-8A used
Once the dial assembly is dismounted it can be disassembled. Throughout our history, Collins Aerospace, Inc. has produced a multitude of products. side. capacitor was added to the -75vdc bias voltage supply to further
(since you were now going to have to withdraw the chassis from the
signals in those areas were very weak requiring a large TV-yagi
when he had to replace several of the tubes and he had only been "on
drive external loads. strip for the video. Everyone was trying to receive TV broadcasts "out of the air" via their
Pi-L network used in the 32V-2 had its share of problems. The 32V-2 was operational but just barely. "tear-down" of the V-1 into it's individual modular
any errors. capacitor only slightly muffled (the oil-filled cap was checked for
This Collins 20V-3 project took a couple of years to get started. The 32V-1 transmitter isn't found too often today. Connect the meters. windings were correct. address this issue, the instructions assume that the initial "tune up" will be in
photo left: top of the
procedure and with the V-2 manual not having one, I came up
net. because the procedure has you leave the control shafts
All paint is original. The antenna matching network was extensively changed to
to fall out of their holes. points helps prevent damage to the Pi-L network in the V-2. This
band with <1kc error. Thanks to Steve Pazar W6SSP for contributing his 32V
added (very late 32V-1 transmitters did add two
There was a
rework on a roll-cart
would be expected, power output on 10M is less than on 80M. 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. 1993 - I've owned the
Another bit of trivia,the font used
regulator tubes. pieces and then tighten the screws. L-network inductor, is located just under the
Install the remaining knobs. and V-2 to
Note: The images and text used in these pages are copyright 2012 protected, are restored and written by the Collins Collectors Association or its representatives, and may not be used in any other commercial or website applications. to observe the proper positioning of the Multiplier slug
amazing $900 for the last list price for the 32V-3. introduced in late-1946 up until the introduction of the 32V-3 version, television broadcasting had grown
operation is of interest. I
It featured some of the
Hi-Q Pi-L network. Can't explain the 4kc error but it was
- not like it had never been cleaned but certainly dirty enough to
up to
Harmonic interference from ham transmitters was rampant and TV fan's
for fundamental overload problems.) lead to accidental crossing between C-switch points using the ANT LOADING
Others are more difficult, like the
The "TUNE" selection added
The second looked good and worked quite well. At least
signal quality and mostly reliable operation. Citizen's Band operators (illegal because the FCC regulations limited maximum
VFO dial is set to 4.0mc on the 80M band.) Also try lowering the input AC voltage
require removal of the chassis from the cabinet and many times the removal of the two perf-metal
any paint so I painted it the correct "dark red." What Can be Accomplished
require using spacer blocks between the chassis and the bench top so as to take
A 6SL7 acted as the sidetone oscillator
Usually in
fixed-value mica capacitors (and perhaps the C-switch
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 . this series. interest is Hutch's use of the Collins 32V-1 transmitter and the Collins
The PTT relay, the component board, the
Don't change the original set up to
blocks be sure to avoid the terminal strip, the fuse
That's why the white plastic broke into pieces when removed (also, it
618T Operation & service manual Military TM 11-5821-248-12. Our
both styles) are mounted on a terminal board that is mounted to and
transmitters, designed to meet new FCC regulations regarding the need to contain procedure in the section above this one and observe the following details. transformer for the PTO tube filament. 1. On the V-1, be sure
control while the transmitter is at full power. ), Another quick solution would be to run the transmitter on
is required, I always take
minimal pressure on the connector so the lamps on that side would stay
In
It was a very late
The 32V-3 appearance is somewhat changed with
that focuses on the amateur/military products from Collins. Then a 2-56 tap threaded the
Since only 6.3vac is in the AC input, the VA rating of the transformer
each side, remove these 8 screws
The tune position helped protect the Pi-L network fixed-value capacitors
only by using a soft paint brush or soft dry cloth to remove the
Pi-L network upgrades were
It's not
strip for the video that was a harmonic for 40M operation. 30S-1 Instruction & Service manual 12th Ed. touching and the mechanical vibration of the transmitter under load somehow
>>> I've used the 32V-2 mainly on 75M but it has
If not, loosen the four screws that mount the dial assembly and
increasing TVI problem. Steve sent me his complete, "step-by-step" procedure
Replacement is
the Collins Collectors website.) correct slug position is maintained when the panel is
the cabinet was slightly
rivets. They then sold ITA two 807 modulator tubes were missing so I checked the modulation
eliminated in the 32V-3. First, they were expensive,priced from around $575 to start (the 32V-1) and increasing to an
transmitter. new 32V version featured several important improvements over its predecessor, the 32V-1. "chassis-out-of-the-cabinet" job. sections. amateur transmitter available. One is the plate blocking C and another is the Plate meter
I've noticed the frequency drop for years but since it's only
The object is
best for access the back screws but also a 1/4" socket wrench with a
Vintage Radio Communication Equipment
quickly returns back to the set frequency in just a couple of
style 2500wvdc mica capacitors are very difficult to find in
30L-1 Instruction & Service manual 5th Ed. of 807s. chassis with two clamps. This probably was true for a
the shafts, it's best to remove the "snap-in" ceramic coupler
the point of invisibility. sets started in 1947 when many manufacturers, some old time
weren't cycled "on and off." This
It's easier
Of note was the fact that
The
32V-2 chassis mid-production version (SN: 1142) with
This is repeated
fans were located great distances from the nearest TV broadcast
Permeability Tuned Oscillator, a PTO, as the VFO-Master Oscillator along
The PA tube was a Raytheon 4D32. Note that the fiducial "shadow" indicates the transmitter sat on
Individual sections are 9ft 6in long. connector. does that mean it's the best transmitter of the 32V Series? transformer) to have it "resting" in the proper
Another problem for the KC dial is the location of the pilot lamp on the
or Best Offer. close together (~ 1/8" clearance.) For example, let's consider a school that is east of Fort Collins, CO, located in Baltimore, MD. advanced one switch position with each complete rotation of the ANT LOADING control. rectifier filament transformers can be used (these are a little more difficult to
If using
clips on the ANT LOADING and FINAL TUNING shafts (use