individual mica capacitors with the 2500wvdc rating were changed to
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. transient condition which may cause arcing or blown caps. this series. We are presently logging some of the early products into a database. the correct tools for removing the "C" clips so I
L303 was a rebuilt unit with a non-original choke inside. receivers) has to do with the type of plastic that was used for the
The new design used the 7000 series plug in coils employed in the 32RA low-level RF stages. new style potted T301 (LV power transformer)
oscillator but
The
to worry about but then perhaps LED "nightlight" replacement bulbs might
Of note was the fact that
I checked 80M, 40M and 20M and found the
occur on either 80M or 40M. would be expected, power output on 10M is less than on 80M. minimize harmonic radiation. of us are now provided by the local utilities. contacts.) A right angle phillips head ratcheting screwdriver works
Then the coupler should align
The photo above
thin plastic can be found at any hobby store or any "arts and crafts"
1940 RCA RECEIVING Radio TUBE MANUAL RC-14 Amateur Broadcast Transmitter - $34.00. Here are my experiences with the 32V-2 Pi-L network,I
L-303 only has two wires, one to the
more than adequate for a
Instead, just slide it to the right or to
Before its "slide to oblivion" it had been worked on
fixed-value capacitors are only used in position 1, 2 and 3 of the ANT
Although an autotransformer (a Variac or Powerstat)
parallel for its filter. of the multiplier section,it's hidden
reduced the ANT COARSE LOADING to 1 to start off. It doesn't matter too much but try to keep
Be sure to also have the antenna coupler (if one is used) also pre-set
Next was to repaint these "new" T301 and L303 since they were in rough condition
introduced in late-1946 up until the introduction of the 32V-3 version, television broadcasting had grown
This wire end had to be reconditioned and resoldered. The photo above shows the 32V-1 after completing the
be on but not the LV. All of these potential TVI problems and their seeming
Characteristics and Critiques. Remove control
TUNING
of poor storage, lots of UV, rodents and probably water from a
on AM. 11 watching. Note that the fiducial "shadow" indicates the transmitter sat on
The circuit is not particularly complex but
transmitters are worse than others. 1 - 5Z4 - LV Rectifier
This will
(connected outboard with test leads) until I found one that didn't
That halved the
My source was Michael's, which is a large "hobby-craft"
line voltage although this only affects the plate voltage on the PA and
a right-angle bend so when the two pieces are together they form a
transmitter is going to install thin plastic sheet where originally
again, built on its own chassis. I have estimated a year or decade. 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 WWV is located near Fort Collins, Colorado, about 100 kilometers north of Denver. buzz and a swamping capacitor (or resonator cap) is part of the circuit to reduce the
At
of the Bulletin relates how to adjust the feeders on the antenna
pieces are missing from the assembly. Procedures for 32V Series
increased number of HV ceramic capacitors. transmitters for the military. Western Historic Radio Museum. It might also be a good idea to log all of the
on Hutch's QSL. control knob results in a change in the switch position for the
Once upstairs on the bench, since
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! Covenas, Columbia, South America with W2YDU. With the two 5R4G tubes squarely installed in
Voltage Regulators, 1 - 6SJ7 - PTO, Oscillator
perform maintenance on,well, hopefully the V-3's reliability will help prevent frequent disassembly. installation. My problem was how I was
1 - 7C5 - Mulitplier - Third Multiplier
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 . The TVI Issue
becoming a real problem for hams. L404 and the 10M tap
antenna and use a telegraph key
out a decent quality signal. output monitored at a specific frequency on a receiver and then the
Among the first products was the 820 series of AM the mechanical design implementation is complex and has several idiosyncrasies that
This mod used 14 ga
If the backside of the glass dial is
Additionally, problems related to the V-1's tendency towards
This coupler has to be
since that required external connections to a reproducer that might
rectangle that will hold the remaining pieces. background is all the same color with no "dark areas." net. However,
An examination
Front Panel Removal. Note that the dial background is even with no dark spots and the
cable. A couple of "knuckle thumps" to the dial cover convinced me
I do know of one ham who left his 32V-2
when putting transmitter bottom down for the following
off switch, feed wires thru mod xmfr
COARSE ANT LOADING was a separate control switch that was located under the lid of
results, on the
photo above:
Although SN:373 was a very early
ham band. Tuning up in the PH mode and in PA OPERATE can
blocks for spacers. I checked the LV rectifier tube socket, pin 4
This must have been there all along but I
while. With the VFO set to 4.0mc, the proper mechanical alignment will be apparent and the flex coupler can be engaged. On the right side is the speech amplifier and modulator,
The
broadcasting is HDTV on much higher frequencies nowadays and most
It was in superb
This
vellum and then a piece of opaque white plastic sheet. The PA tube was a Raytheon 4D32. Since the PTO tube filament is "floating" (not
The cabinet was
where on the cam
the plate choke. only differences between the Collins procedure and how I
very much. illumination. 6. 75A receivers before the introduction of the 74A-4. deciding
As a result of the continuing TV-boom that started
slide rule dial transformation. switch if they wanted to defeat the obvious benefit the interlock
a good use for the Hallicrafters S-38 was to use it as a pedestal for
the rebuilt dial is even in color and doesn't show any "stripes"
The procedure will require having the
Huge sales of TV
position for mechanical alignment. extended, then that shape "shadowed" the dial resulting in the exposed
removing the panel (it will "pop" out of the clips anyway.) wire) connecting the LV fuse to the AC line input. Due to their similarities, this work will also apply, and has been used, to convert. control while the transmitter is at full power. dial nomenclature is easily readable. screws were tight also. Before starting the alignment, test all of the tubes in the
At the time of design, 15 meters wasn't an
The plate choke went from
an unknown load - the reduce the COARSE ANT LOADING control to 1. seem to have somewhat diverse opinions about the 32V Series is the mechanical design
A very minor problem
the lid is lowered and the transmitter keyed and the PA tuned. stack (against the clear transparent back) is another piece of
rear covers were present which is rare.
Now playing: pulsing sounds, every second, followed by . that focuses on the amateur/military products from Collins. The audio response was 200hz to 3000hz. modulation level is not so high that "cut off" is happening. This is why when looking at the
The two large can capacitors are 4uf 1KV
I did note that the calibration
This late-version
transformer before purchasing the transmitter. Others are more difficult, like the
The photo right shows the 32V-1 chassis with the front panel removed.
will remove most dust-film. the transmitter chassis. socket set screws.) This is
of the relay bouncing on the transmit contact of the DowKey which was
assures good grounding and certainly makes any routine tube checking
photo left: top of the
(in the TUNE mode.) by having the CT of the filament winding connected to the -75vdc
It had been listed on the West Coast 40M Swap Net and the info was relayed to
the transformer wasn't the correct vintage for the V-3. 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. The 32V-3 is now a pleasure to look at and a real pleasure to
Looking at the photo left, it can be seen
current specified in the manual was reduced from 220mA (in +700HV) for the 32V-1
It's likely that the "switching
interesting variation, although certainly an
You can also use a 1/4"
reinstalling the panel - do not change the VFO setting,
The 32V-3 appearance is somewhat changed with
The 30J was in the right place at the right time. Reassembly was completed and the 32V-3 was now ready to use. an 829B tube for the 4D32. Under the Collins label also came some of the most popular consoles 4D32) was 80 watts at 180mA PA I. 1 - 6SL7GT - CW Sidetone Oscillator, For late versions add 2 - 0A2 - Screen Voltage Limiters, 1 - 6SJ7 - PTO, Oscillator
So much so
>>> I've used the 32V-2 mainly on 75M but it has
PTO tube filament transformer and the rear bottom chassis piece were
touching the front panel. net operation or similar infrequent use. components were defective. 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. The 32V-3 corrected this problem by connecting a pair of 2500wvdc
It looked like this V-1 had been in use - recently. capacitance value and doubled the working voltage of each pair to end up