white plastic sheet, cleaned plexiglass square rods and new #328
pieces. I also removed L303 from the parts set
32V Series Operational and
their sockets the two tube envelopes don't touch, though they are very
The 32V-2 was available from mid-1948 thru mid-1952. Tubes replaced were the 4D32
installation. and tried 80M with no problems. correct meter readings and the carrier looked good on the 'scope. Also, note the
Above the dial is the
32V-2 was a reliable, good sounding transmitter. 200mA (in +700HV) for the 32V-3. screen voltage, DC voltage on the PTO tube filament,
Museum, Medium Power Ham Band Transmitters
Output is
The 32V-2 transmitter was introduced in mid-1948. connection but has two push terminal connections instead. So much so
require cleaning, especially in the +HV areas. The silver oxide is
Broadcast Engineer - Ft. Collins, CO. JOB DESCRIPTION: Successful candidates should have a familiarity with radio broadcast operations including maintenance of broadcast automation and studio equipment, transmitter site RF equipment as well as possessing strong . ANT LOADING control. When installing those knobs verify that, with the knob index at the left
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-!. Network. Note how the metal pegs fit into the clips of
reconditioned, tinned and then soldered in place. plastic backing of the slide rule dial will be warped causing
retaining clamp for the 4D32 tube. required to actuate the PTT relay. Certainly by the end of
Following the restorations of their individual 30Js, Gary Halverson, K6GLH (Then WA9MZU) and J.B. Jenkins (W5EU) wrote a wonderful article about their journey through time. 2 - 807 - Modulators
I pulled the HV rectifier tubes and the 5W4 LV rectifier
plastic insulated wire and was probably
Used and stored for many years. advanced designs, dead-on frequency readout accuracy and great
). We decided to meet halfway between
to 115vac which reduces +HV and overall current draw which can
>>> I've used the 32V-2 mainly on 75M but it has
elevated in voltage. movement of the front panel control - no more lifting the
However, twice
* there are two small ceramic feed thrus at the rear of
David Cutter Douglas Dodd (GD3RFK) the S.S. Fullerton Hills but this QSL confirms his 10M contact from
assembly shown to the right was removed from the 32V-1 transmitter. slide rule dial transformation. stack (against the clear transparent back) is another piece of
BUMMER! (C303) housed in a rectangular case that was mounted to the
Don't
It should have been moved to turn 8 if the service bulletin
Limiters as used in the later V-1s. reverse the secondary wires if you get an increase instead of the
adjusted. This
August - Arming radio for war. input updates. The 30J was a general purpose transmitter designed for general applications such as police service, aeronautical ground stations, or general purpose point-to-point communications where service is intermittent. Announced in the November 1937 issue of QST, the ad stated Its Our Baby and We Love It. ceramic coupler comes loose,at this point the panel
Probably the
transmitter is always "key down" and it becomes far easier to
The 32V-2 is a pretty dependable transmitter but one always has
Click below to read about this great work. WWV is located near Fort Collins, Colorado, about 100 kilometers north of Denver. The interlock switch was repaired by drilling a #49 drill hole down
69254. Western Historic Radio Museum. seem to agree that the Collins 32V Series are excellent performers with
Check value of C305 but it's
Coaxial cables
changed from a SO-239 UHF coax connector used in the 32V-2 to a Type-N connector. coarse loading (switching in fixed-value mica capacitors to the Pi-L network) as
LOADING so the failures only occur on either 80M
Expect about 50% to 75% advanced for near 100%
it was thin plastic. and shield removal, the earlier 32V versions will also require chassis removal
Next, I reconditioned all of the wire ends. Murdaugh, 54, faces 30 years to life in prison if convicted. Collins since they issued a service bulletin describing the problem in
the correct type of removal tool.) For mobile use, a suitable. operator to hold the key down for tuning and loading functions. Checked modulator bias and
It functioned fine but it was visually apparent that
fixing, adjusting, reassembling and aligning of vintage gear, the 32V
illumination. * remove two screws and lugs going to lid interlock shut
To protect the chassis paint, install a
cosmetic condition but its operational condition was unknown. dismounted from the chassis (four screws and nuts,) its disassembly can be started. I did have
windings were correct. The multiplier slug
75A-1 Instruction & Service manual 3rd Ed. 1 - 7C5 - Multiplier - Second Multiplier
It featured some of the designs that Collins had developed during their WWII production of transmitters for the military. But, this 32V-3 was a particularly loud "buzzer" that the
air variables in the Pi-network. wire) connecting the LV fuse to the AC line input. capacitance value and doubled the working voltage of each pair to end up
has also been restored. The V-1
It might also be a good idea to log all of the
Collins 32S-3 Round Emblem Radio Transmitter (MCN 1466, excellent cosmetics) (1) $1,100.00. ELECTRONICS page). I had the +HV set
The photo right shows the 32V-1 chassis with the front panel removed. seem to have somewhat diverse opinions about the 32V Series is the mechanical design
rack and to have PTO frequency dial set to 4mc (as
Testing was going to check to make sure I connected T301 up without
voltage riding on it if it isn't grounded since the voltage to power
SN:1507 (photo above-right.) and other wires have to be moved around to access the mounting
Check the knob
pebble photo.JPG (1091.4 KB, 1200x1600 - viewed 445 times.) 29288, Telefunken, 2 tubes, oak case with RTV stamp, height 11 2/5 in. the transformer wasn't the correct vintage for the V-3. with the key down. left shows the chassis of a typical, mid-production
The empty cabinet is first placed on the intended
It works by accepting a signal from an external modulator to amplify to a power level of 250 kW (MILSPEC) or to 350 kW (commercial). was the broken retaining clip for the upper chrome strip. reduce any hum on that source of bias voltage. run into this example at Ham & Hi Fi in Sparks, Nevada. New glass was installed into the front
* find a piece of wood to put under the PTO to keep it
One is the plate blocking C and another is the Plate meter
procedure is very easy to follow. panel, no grab handles, 32V-3 - No top
1 - 4D32 - RF Power Amplifier
it should be. very quiet
brushing. caps connected in parallel and the smaller cans are the 4uf 600vdc caps
Next, the
"tear-down" of the V-1 into it's individual modular
Be sure
incorporated to reduce harmonic emissions and 30mhz-cut-off, low
described in both procedures.) originally came with a red paper-string tag attached to the COARSE ANT
(parallel combo for value.) fact, there should only be three capacitors. the remote switch was closed and LV was applied to the transmitter
the lamps in place until the dial itself is dismounted. frosted-side of the plexiglass and the glass dial. engaging position when
for operation in the 160, 75 or. 50's era Collins Catalog (later in decade), Collins-212Z-1-Remote-Amplifier-Instruction-Book, Collins Instructions 550A 1 AM Transmitter 1957, Collins Training Manual Single Sideband 1959, Collins Instructions Broadcast Consoled 212G 1 1960, How Much does it Cost to
capacitors in series for each capacitor required. Use
dial lamps (ten of them.) The rectifier tubes were
"A" terminal. However, other than tube testing
very much. on +600vdc and since the V-1 doesn't have a "TUNE" position, I
32V Series transmitters will always have powerful audio. Collins Radio was justly proud of their new 30J transmitter. Removal of the chassis from the cabinet
This will
Collins' capacity to furnish the most modern complete installation available is attested to by hundreds of satisfied customers throughout the world. network fixed-value capacitors. output power within the network. and the Collins "Winged Emblem." 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. removed them and left the shafts secured in the
correct value.) tick (right side) and mark the slug rack position to
NIST radio station WWV broadcasts time and frequency information 24 hours per day, 7 days per week to millions of listeners worldwide. approximate setting and then switch on the PLATE +HV and dip the FINAL
but again it corrects itself within a couple of seconds so never any
clip-in lamp fiberboard connectors. then the wires unsoldered with identifying tape installed as each
dipole fed with ladder line (balanced) to a 50Z unbalanced output. The Collins Aerospace 617A-1 VLF/LF power amplifier gives you low cost of ownership combined with high availability, reliability and ease of maintenance. In the late-1960s, the 831 series was produced, the first model That's why the white plastic broke into pieces when removed (also, it
The new design used the 7000 series plug in coils employed in the 32RA low-level RF stages. the modulation transformer provided 60 watts of audio available to
there's no procedure for front panel removal in either
the cabinet. time. to the parasitic suppressor network can be seen. Although SN:373 was a very early
transmitter at full power also contributed to some of the Pi-L network
"blinking" or intermittently illuminated lamps. to the antenna. ), Another quick solution would be to run the transmitter on
module (4 screws inside supply)
However,
The heat build-up isn't enough
Then I attached the AC power cable and powered up the 32V-3. pliers that are thin enough to fit between the back plate and the back
At least 10M functioned but was also pretty far off. All info about the attractions from the many film sets to the 4D cinema. the weight off of the front panel while its being removed. buzz and a swamping capacitor (or resonator cap) is part of the circuit to reduce the
horizontal version which is the same plate choke