Collins 388 schematic software

Software definition and meaning collins english dictionary. I can only receive about 3 am broadcast stations and there is a loud cyclical hum near every 100kc mark. No bandwidth switch under bfopitch control, could be upgraded to 51j4 with 354a1 collins mechanical filter conversion kit. Collins r388 51jx receivers k4ozys boatanchor home page. Collins 516f2 power supply collins radio company source document. It was a winged emblem 32s1 transmitter, 75s1 receiver, and a 516f2 power supply. If you have a photo of an r388 actually being used in navy service, please let me know. The r38851j251j3 really requires a higher impedance antenna than that which is supplied by a 50 ohm coaxial cable.

If you have a 75a1 be sure to compare the schematics to what you have. Designed to replace 75s series 6bf5 audio amplifier tube directly. Complete 51j2 manual, scan of xerox 200 dpi, pdf, 6mb 51j2 schematic 300 dpi, pdf, 350kb later 51j2 receiver with 70e15 pto. Before you get started, be sure to test the transmitter on its original frequency by running it into a dummy load. Collins radio equipment manuals the cca is actively digitizing the usertechnical manuals for collins radios most popular equipment used for amateur radio purposes. The program does come with a fairly extensive library but in my opinion the quality leaves a lot to be desired. I joined a yahoo group for collins 51j, r 388, and r390 receiver aficionados to gather more information. Tm11854 or to 1635r3885 manual original departments of army and navy issue april 1952. Hi john, i have scanned in a 75a2 schematic and will send it to you in a separate email. Complete 51j2 manual, scan of xerox 200 dpi, pdf, 6mb 51j2 schematic 300. All you need is a piece of rg58 coax or similar with an rca plug on one end and a pl259 on the other to connect this to the antenna connection on the r. The antenna relay in the kwm2 then connects the r38851j to the antenna when receiving, but not when transmitting. I am attempting to compile info that will help identify what r388urr.

Collins r388 receiver attached to cb magnetic mount antenna receiving ham band. Quoting their tm manuals, radio receiver r 388 aurr is a communications receiver, having excepcional frequency stability and calibration accuracy. All you need is a piece of rg58 coax or similar with an rca plug on one end and a pl259 on the other to connect this to the antenna connection on the r38851j. Collins admits this is a problem in the service supplement listed at the beginning of this article, changing the l section coil taps for 10 meters and changing the capacitors c406, c407, and c408. Softwaredefined radio for engineers analog devices. This is a page devoted to the collins r 388 51j3 and r388a 51j4 receivers. Visit us online for more information or to download service manuals today. In this page you find schematic, users and instructions manuals, service manuals, technical supplement, leaf leads and other good stuff. I mentioned that the collins 51j series and r388 receivers were insensitive. Simplified schematic of 75a3 rf circuits 75a3 receiver, schematic diagram 148c1 nbfm adaptor schematic diagram.

Collins 75a1 receiver service manual download, schematics. Band change collins 51j4 receiver covers the frequency range of 0. Manuals for collins this is the manuals page for collins. Collins reduced the neutralization problem by grounding the screen in the 830 and 831 series. 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. Why do collins serial numbers and contract numbers and models seem to be. Collins r388 service manual download, schematics, eeprom. Such documents include, but are not limited to, product manuals, schematics, test methods, service bulletins, advertising materials, product catalogs, maintenance. Please send me email with additions, corrections, more info, etc. Service manuals, schematics, eproms for electrical technicians. The 388 was a thought as to perhaps a better radio quality wise than the halli and who could argue with collins or us.

This is what old time radio operators like to refer to as a boat anchor a big old tube radio that if good for no other purpose is heavy enough to anchor a boat this one is the collins r388, a. Collins mechanical filter, functional diagram detector and avc circuits. I am attempting to compile info that will help identify what r 388 urr receivers were used by the us navy. If you have a photo of an r 388 actually being used in navy service, please let me know. I am attempting to compile info that will help identify what r388urr receivers were used by the us navy. The only thing i have found is the drawing below showing an r388 used as a. I can only receive about 3 am broadcast stations and there is a loud cyclical hum near every. A collins sline troubleshooting and repair adventure. Circuits affected by band changes are the rf amplifier grid, first, second, and third mixer grids, crystal selector, and crystal harmonic tuning circuits. Collins 51j4 service manual download, schematics, eeprom.

Select picture or schematic to display from thumbnails on the right and click for download. Collins 30k transmitters at this point, 2 30k1s and a 30k2 have followed me home. The top cover panel is very bright and has a schematic under it. Over the years, power cords become frayed, the electrolytic capacitors dry out, and the potted bias rectifier modules give up the ghost. It was known as the r388 and was used in multiple receiver diversity rtty installations. View and download collins 75a3 instruction book online. Tm11854 or to 1635r 388 5 manual original departments of army and navy issue april 1952. For easier initial frequency programming, copy and paste, and importing frequency files from previous radios you may want to consider using the chirp programming software found below. Sections on operation theory, field maintenance, storage and demolition to prevent enemy use, part list. Collins 475d1 dme ramp test set instruction manual. Among the first products was the 820 series of am transmitters, designed to meet new fcc regulations regarding the need to contain harmonics and spurious emissions inside. The other two were swaps with the last one being a pristine late 62 navy contract unit that is, when the r390s were too expensive, the navy contracted collins to make the r 388 in 1962 as a lower cost alternative.

Noise limiters and audio amplifiers 75a3 alignment adjustments dial cord replacement. Rockwell collins 51s1 manuals manuals and user guides for rockwell collins 51s1. This site helps you to save the earth from electronic waste. Aug 25, 2010 the r 388 51j251j3 really requires a higher impedance antenna than that which is supplied by a 50 ohm coaxial cable. If you want to checkout the service bulletins for the 75a2 checkout the collins collectors association website. In 1964, collins moved the broadcast division from cedar rapids to dallas, tx.

The other two were swaps with the last one being a pristine late 62 navy contract unit that is, when the r390s were too expensive, the navy contracted collins to make the r388 in 1962 as a lower cost. I was playing around with this unit a bit more this afternoon and i think it has a receive problem. I am restoring the hall purely as a nostalgic thing and as a excuse to put up an ant. Our goal is to make these manuals available via online download and, eventually, via cdrom for all cca members. The collins 75s3a has 14 additional 200 khz positions and an additional knob above the band select. The collins 516f2 power supply is used to power the collins 32s transmitters and the kwm2 transceiver. This is a page devoted to the collins r388 51j3 and r388a 51j4 receivers. There is a wealth of other collins information on the cca website and much more to come. Treetop circuits connecting an r38851j receiver with a. The world wide web has a couple of good r 388 sites with enough valuable information to get me started on the museum receivers repair. Solid state 6bf5 home of the collins radio association. The receiver was designed for a 300 ohm balanced feed from the. The collins 75s3a has 14 additional 200 khz positions and an additional knob above the band select switch.

The editor and publisher assume no responsibility for the accuracy or safety of. For sale is reprint of tm 11854 to 1635r3885 r388 radio receiver. This has operating and service elements in it with foldout schematic title page is partially ripped. Sections on operation theory, field maintenance, storage and demolition to prevent enemy use. Collins 476d1 distortion analyzermonitor instruction manual. Collins 456c1, 288a1, 278h1, 614j1, 614k1 selective calling system instruction manual. Collins r388 radio receiver army manual r388urr glendale. This has operating and service elements in it with foldout schematic title page is partially ripped, otherwise looks ok. We have 1 rockwell collins 51s1 manual available for free pdf download. Feb, 2016 collins r 388 receiver attached to cb magnetic mount antenna receiving ham band.