Heavy metal is not for everyone home of the collins radio. The audio driver employs 6sj7 pentodes in a pushpull amplifier circuit. The collins model 75a2 receiver is designed for the amateur bands in the frequency range of 1500 kc to 30 mc. Be prepared and able to communicate in case of emergency with the largest selection at.
We have 1 rockwell collins 51s1 manual available for free pdf download. Returns standard industry policy for digital, software, movies, music applies and there are no refunds given of any kind after product has been opened. The collins type 20v2 500 watt am transmitter has been designed for. Adjust the screwdriver adjustments butterfly capacitors that resonate the oscillator, buffer, and driver tank coils for maximum drive to the buffer grid, the 807 grid. I never had the money for those as a high school kid. Our goal is to make these manuals available via online download and, eventually, via cdrom for all cca members. Collins 20v2 500 and watt am broadcast transmitter manual. Well, ive tacked some clips together showing the process and reasoning behind neutralizing the rf amplifier in my collins 20v transmitter. The transmitter is a table top unit housed in a single cabinet 12 716 high, 21 18 wide, and 78 deep. It added pushbuttons and relays for the filament and plate circuits. Overload protection is provided by magneticallyoperated circuit breakers, by fuses in the. In this page you find schematic, users and instructions manuals, service manuals, technical supplement, leaf leads and other good stuff. Collins 1051a12 vhf receiver planar assembly overhaul manual. Over the years, power cords become frayed, the electrolytic capacitors dry out, and the potted bias rectifier modules give up the ghost.
View and download collins 30l1 instruction book online. Collins 212b 2 broadcast speech input console instruction manual. The receiver provides facilities for the reception of cw, mcw, and am phone reception. Energy returning to the tdr system from the cable is properly terminated in 75 ohms by the series combination of the 25ohm adapter and the 50ohm tdr system. Collins radio equipment manuals the cca is actively digitizing the usertechnical manuals for collins radios most popular equipment used for amateur radio purposes. You can see that all 3 of the caps are grounded on the same leg. Myers pumps are available as submersible and centrifugal jet pumps for residential water systems including water well, sewage, sump and effluent, submersible grinder and solids handling wastewater pumps and systems, commercial sump and sewage pumps, reciprocating and centrifugal industrial pumps along with a wide range of repair parts and accessories.
If your transmitter is already on the high end of the am broadcast band, you wont have to do much to get on 160. The viking 2 also was available as a civil defense model that transmits on all frequencies from 1. Before you get started, be sure to test the transmitter on its original frequency by running it into a dummy load. This is a page devoted to the collins r388 51j3 and r388a 51j4 receivers. I am now accepting new manuals for inclusion in this archive. It and the 20v form a room divider between my living room and kitchen. The collins 516f2 is a heavyduty power supply for the kwm22a transceivers and the 32s1,2,3 series of collins transmitters. Quoting their tm manuals, radio receiver r388aurr is a communications receiver, having excepcional frequency stability and calibration accuracy. It supplies bias to the rf driver, modulator, and power amplifier tubes. The collins 516f2 power supply is used to power the collins 32s transmitters and the kwm2 transceiver. The transmitter came from the factory operating in the.
Collins 20v 2 am broadcast transmitter instruction manual. The 20v3 is definitely not in the artdelco tradition as the 20v1 and 20v2 units. Collins 20v am broadcast transmitter instruction manual. It was a winged emblem 32s1 transmitter, 75s1 receiver, and a 516f2 power supply. Contact and submission information below updates 20190623. Two octal sockets have been provided for internal plugin attachment of a narrow band frequency modulation detector unit. On october 1, 1980, rockwell spun the collins broadcast line off to continental electronics as of 1181. Fellows with big rigs they didnt build need to go through them and study the schematic with regard to the line to the loads power supplies, fans, etc. The 32v2 transmitter is vfo controlled and features bandswitching on all amateur bands between 3. In may, 2001, i acquired a gates bc1t from wbud in trenton, nj. This is a schematic diagram for the collins 75a2 receiver. Manufacturers plate on collins 20v3 serial number 101, owned by fred. Items that have a green button indicate that the schematic is missing. Volume 1 is a new software package from etron enterprises which aids in the design of butterworth.
On the schematic its shown as a series blocking cap with respect to l111 modulation choke. The 32v, the bc610, dx100, and the viking 2 ruled the bands back then. This collins 20v3 project took a couple of years to get started. Collins 1051b1 vhf nav receiver planar assembly overhaul manual.
Collins agrees to repair or replace, without charge, any equipment, parts, or accessories. Page c2 audio panel collins amr 350350h connector 1 jl. I finally did trade up to a viking 2, which is still my rig of choice. Collins 516f2 power supply collins radio company source document.
Collins 20v 3 am broadcast transmitter instruction manual. That transmitter now sits in the living room across from the 20v. Schematic diagrams and service manuals amateur radio archive. Collins 75a2 reciever schematic diagram bigschematics. Perhaps we can help find manuals and schematics for your gear, both current and out of production.
These manuals are available for download and free of charge. The collins 75a4 is a high quality amateur band receiver covering the frequency ranges of. Collins 20v broadcast transmitter neutralization problem. The modifications described here will address both issues. However, comparing to a photo from the wj6w 20v2, one side of c163 is grounded. You are visitor number i have for sale a collins 204f1 hf amplifier complete with all tubes, spare set of used eimac 4cxa final tubes, one new ug999au nconnector adapter and u. Again you can see the quality work that had been carried out in its restoration. Following the chart in the kwm2 manual, i checked every tube pin resistance to ground. It has a double conversion, crystal controlled frontend. Scifier2 store the ultimate vintage radio and electronics manuals and more collection on dvd rom disk over 230 pdif books of vintage radio manuals, over 60 vintage electronics manuals. I later acquired a collins 20v2 from woon in woonsocket, rhode island.
The collins 20v developed a reputation as a workhorse transmitter. Beginning in 19xx, this transmitter featured dave hultsman signing. Am60p 60 watt am transmitter schematic usable for am100 am transmitter. The rated plate input power is 120 watts phone and 150 watts cw. Software definition and meaning collins english dictionary. Complete 51j2 manual, scan of xerox 200 dpi, pdf, 6mb 51j2 schematic 300 dpi.
Here is a former broadcast transmitter rescued from a local am station that has gone solid state. The reason why these days the am stations that are 1 kw or less are dumping thier old tube rigs is because it has gotten so cheap to get a solid state back up if need. The manual labled automatic tape control is for a very early cart machine manufactured for collins in the late 1950s. A collins sline troubleshooting and repair adventure. If you want to join us and get repairing help please sign in or sign up by completing a simple electrical test or write your question to the message board without registration. Although have never worked on a collins 20v before i have work on several gatesharris and rca vacuum tube transmitters before so this one is not so different. A collins sline troubleshooting and repair adventure gary white w5gw in october 2011 i obtained a collins sline station from a friend and fellow ham in san antonio k5jwk gary. This can save you a lot of aggravation during the conversion. I have been trying to convert the pa and modulators in my vintage collins 820d2 broadcast transmitter from 5500as to 4400as and keep running into a brick wall. Collins 30k transmitters at this point, 2 30k1s and a 30k2 have followed me home. After a visual inspection and a little cleaning, a resistance check was in order. The bauer 707 transmitter with a similar circuit used 8 db of feedback. In the late1960s, the 831 series was produced, the first model being a 2 kw, 831d, to take advantage of adding vertical polarization.
1412 898 854 1451 309 587 530 789 33 716 76 131 633 1049 1109 660 217 76 1286 1195 119 871 1369 782 1502 1263 1477 1183 1258 823 496 526