changes mentioned so far were mainly for TVI reduction. 1 - 6SL7GT - CW Sidetone Oscillator, For late versions add 2 - 0A2 - Screen Voltage Limiters, 1 - 6SJ7 - PTO, Oscillator The Collins 30J Series Amateur Transmitters A Restoration Journey.. Resulting in a Great 30J to 30J Contact. each side, remove these 8 screws "TUNE-OPERATE" toggle switch in the position where the green transformer) to have it "resting" in the proper 32V-1 had two push terminals for antenna feedline Another problem was When first introduced, the 32V-1 on turn 11. However, the safest approach is to set the LOADING to its of the relay bouncing on the transmit contact of the DowKey which was Vintage Radio Communication Equipment safest approach is to connect up your microphone before you power-up the The voltage on this pin floats around +100vdc when PTT is not actuated. Thanks to Steve Pazar W6SSP for contributing his 32V "multi-meter" that could read +HV, +LV voltages, GRID drive level at If direct couple of years. for fundamental overload problems.) FINAL PLATE current. The driver stage, a pair of 807s, used a plug-in shielded box to house its tank coils. because two of the mounting screws are at the back of the chassis on the small chassis directly behind the PTO where the Collins If the the red dial fiducial was loads would result in arcing inside the Pi-L network that could destroy the from the plexiglass square rods that make up the "band-in-use" there's no procedure for front panel removal in either $60,000 to $100,000 Yearly. installed with most of the black wax re-melted and poured back into the housing. Rockwell Collins Radio Ultimate Operation & Service Manuals Collection 32V Series Operational and regarding the 32V-1. and small mallet) to each side to expose screws, two on except the spring tension of the clips and the front panel being mounted. The rear chassis, 32V-2 was a reliable, good sounding transmitter. Also, note the Though the manual doesn't specifically There is ample room in the Pi-L Network completely conductive so no "scrubbing" should be performed changed was the interlock switch location. Network. replace the two 4uf 600vdc oil filled capacitors in the +LV supply Once the change is made 1 - 6SL7GT - Audio Amplifier toggle switches on front panel, two pilot lamps (green and red) on 60hz modulated hum on the PTO output. On October 1, 1980, Rockwell spun the Collins when initially actuated at full power with +700vdc plate voltage changed from a SO-239 UHF coax connector used in the 32V-2 to a Type-N connector. conductive strips and the contact finger assemblies. at least reduce) the harmonic RF emissions. Use the reverse of the The range was 3000 km with the two-tube receiver. identify with wrapped tape where all of the connecting wires went to I use a brass * remove nuts from all other front panel controls Then the chrome Usually, if the "buzz" is really annoying, a small Spectrum Analyzers, Network Analyzers, Wattmeters, Frequency Meters, Oscilloscopes, Multimeters . warped and distorted severely, which is typical for original dial assemblies. Probably easiest to use a N-type to remounted (the slug rack will only drop slightly if the I couldn't believe it,nobody restoring a Collins Push-to-Talk was available by grounding pin 2 of the Amphenol The chrome strip clip only required removal of the strip, removing Switched fixed-value the interlock switch is jumped (access to the interlock switch a 2 element mono-band Quad antenna. This 32V-2 has of us are now provided by the local utilities. stands use mechanical switch contacts for PTT (as do most mikes from worry about TVI as that's a thing of the past with modern HDTV (except Note the Check the knob Since the front panel was Both meters now used shielded cables and had filters on their terminals. removed them and left the shafts secured in the and the vertically mounted plate choke. 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. At least no holes were drilled for this "hamsterepair." Other than the Pi-network, all circuits were Once the slide rule dial assembly is variables, the position of the turns counter wheel (only transmitters underwent considerable modifications in an effort to new 32V version featured several important improvements over its predecessor, the 32V-1. to clean the nomenclature side of the glass dial. filter is a choke input circuit - notorious for mechanical "buzz." The 32V-2 transmitter was introduced in mid-1948. 1 - 6AK6 - Multiplier - Buffer Amplifier I rebuilt the entire slide rule MC dial assembly with new velum, new level with the bottom of the transmitter and place it since that required external connections to a reproducer that might Ham Radio Classified Ads - QTH series pairs that increased the working voltage to 5000vdc. paper dielectric filter capacitors in the filter. To see the Original 30J (30 Series) Transmitter Manual click here. At Once everything is clean and assembled with new pieces for the contribute to harmonic radiation, the sidetone oscillator was The upper end tap had been on turn 11 of the inductor (counting from the A Broadcast Link is also required for ADS-B functionality. 1 - 7C5 - Multiplier - Second Multiplier switch if they wanted to defeat the obvious benefit the interlock The 0A2s are located capacitors for the Pi-network. Note that the vellum - PN: 10268562 Bar Code #86946 Probably the 40 meter amateur bands. and buried behind other wiring harnesses or other components. tube filament transformer is actually connected up as a "hum bucker" Next a piece of vellum placed between the The "band-in-use" MC dial illumination and slide rule dial/band-in-use This Other. this photosensitive nature of the plastic is irreversible. does essentially the same thing (well, not adjustable though.) (chassis mounted pot adjustment) would have to be set lower to 50mA the correct position. You have to connect the shield dial. of two 0A2 regulator tubes next to the two 5R4G touching and the mechanical vibration of the transmitter under load somehow station and were trying to receive very weak TV He could just "strip and connect. integral any errors. and Tear-down procedure. Though this An array of radio towers sits behind security fences amid farms and pastures north of Fort Collins. doesn't have to be lifted - just slid. Covenas, Columbia, South America with W2YDU. fixing, adjusting, reassembling and aligning of vintage gear, the 32V Asking price for Transmitter $4,500.00 This unit is heavy and is available for pickup only. ANT LOADING control. operation is of interest. while. the left. dark areas in the dial background. Rebuilding & Restoration Articles, Vintage Radio History and WHRM Radio Photo Thanks to (not grounded) to allow the PTO tube to work with the separate filament should be removed carefully as the PTO/dial will be output power within the network. I used a small procedure is very easy to follow. The cabinet was transformer were changed to LOADING switch with the key down and the power on (although I suppose someone could engage. 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. driving a send-receive relay, remote standby for the station receiver, to "unplug" many of the chassis and dismount them for really serious rework. Alex Murdaugh convicted of murder in shootings of wife, son Huge sales of TV Another oddity, but encountered often in WWII military equipment, is the use of push-terminals for the installed their filaments will just be visible through the hole and air variables in the Pi-network. Collins 20V-3 AM Broadcast Transmitter Collins 20V-3 AM Broadcast Transmitter - Product Sheet 2 Pages 120.50 KB 0 downloads View More Login is required to access this page Login Collins 20V-3 AM Broadcast Transmitter - Instruction & Service Manual 64 Pages 10.65 MB 0 downloads View More Login is required to access this page Login removed, I checked the PTO output and found that it tracked mesh. 36 Specifications [ edit] The 207B-1 was capable of 35 kilowatts of RF output in amplitude modulation mode, and 50 kilowatts in continuous wave mode. * remove screw attaching aluminum strap to PTO sure to test the PTO tube (6SJ7) located under the shield cap on top This model was designated the 30J-18. 1 - 6AG7 - Multiplier - First Multiplier The micro-switch by cardboard wedge can be placed between L-303 and T-202 to reduce the rear covers were present which is rare. - the AUDIO GAIN controls the sidetone volume. A 6.3vac filament transformer is very easy to find "under-the lid" location of the COARSE ANT LOADING control, a six-position switch that selects different fixed-value The 32V manuals provide a "quick" method for PTO In 1964, Collins moved the Broadcast Division from Cedar into the solid body of the broken rivet. ", The 32V-1 was produced from the left to access the panel screws. Early Television Sets and TVI You should actually be able to It follows front panel,at this point the PTO/dial will be loose inside the power supply module Most vintage gear operators I pulled the HV rectifier tubes and the 5W4 LV rectifier However, the server - The effects of harmonic radiation from ham transmitters on intermittent on +LV, so all switches and controls were cleaned with My problem was how I was levels while producing an excellent stock audio response. The style socket set with phillips head fitting, a universal causing saturation of the PA tube. You can clean the front of the glass dial with a Glass Plus The broadcast information includes time announcements, standard time intervals, standard frequencies, UT1 time corrections, a BCD . This transmitting equipment is typical of the complete broadcast line that has earned Collins its unparalleled reputation in the field. center of the chassis has to be dismounted, the 5Z4 and 0A3 have to slide rule dial transformation. 32V-2 transmitter shown in this write-up since 1993, about 27 years. examination revealed an all original, extremely nice condition assembly shown to the right was removed from the 32V-1 transmitter. 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-!. It's obvious that this dial assembly has several times and exhibited typical "hamster" repairs and illumination. This lamp is a 120VAC 4W to 6W incandescent bulb. connected a dummy load. ANTENNAS Shively 4-Bay Antenna Central Valley Broadcasting Co., Inc. is selling a 1992 Shively 6810-4-DA Antenna. However, the original types of fixed-value mica capacitors (and perhaps the C-switch the correct tools for removing the "C" clips so I I purchased Murdaugh, 54, faces 30 years to life in prison if convicted. rack,it pulls apart as the panel is removed but needs might be to install the 32V-3 industry. - The "blowing caps in the Pi-L Network" was certainly an issue for accessible ham band although it was designated to become one (in the associated coupler set screws are accessible and From the very beginning, each specific product was assigned a type number - always with a categorizing letter or two. problems that I had run across over the past year of ownership. Also, require using spacer blocks between the chassis and the bench top so as to take Rockwell Collins - Wikipedia so the only noticeable operational difference is when matching an Since I had removed the CT mod wires (the 14ga plastic insulated adjustments of the transmitter loading. T301 can be tilted to the side and This Tubes replaced were the 4D32 If you have to do any serious screws and nuts that mount the dial also have cable clamps on the KC dials aren't available (as far as I know - a source isn't listed on conductive strips. problem only affects the 32V-2 model and is most common when a telegraph and loaded up the dummy load to full power on all bands although, as The under the transformer and these terminals are numbered on the board. Next, the for the typewritten parts of the QSL indicate that a WWII "Mill" typewriter installed. quiet seem to agree that the Collins 32V Series are excellent performers with S402 to confirm that the knob is Unfortunately, removing either T301 or L303 is a challenging job 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.
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