Collins 1051a12 vhf receiver planar assembly overhaul manual. Software definition and meaning collins english dictionary. This is a very high quality combbound reprint of the instruction book 520 5014 00 4th edition, dated 1. For quite a while, collins had a field modification kit to add the 4. Filter 51j4 band change and tuning system, block diagram. In this page you find schematic, users and instructions manuals, service manuals, technical supplement, leaf leads and other good stuff. Original collins 51s1 part in 100% working condition. I dont know about the 51j4 as to if the knob was an option. Collins 75a1 receiver service manual download, schematics. We have 1 rockwell collins 51s1 manual available for free pdf download. Collins 51j4 communications receiver installation manual. Other useful information would include your experience with similar products, infomation on a product that you would purchase instead of this one, and so on.
This is a page devoted to the collins r388 51j3 and r388a 51j4 receivers. When you are having trouble with your appliance and its hard to find the paper original manual, you find all the responses to your questions on usermanuals. Service manuals, schematics, eproms for electrical technicians. Collins 1051b1 vhf nav receiver planar assembly overhaul manual. Describe your experience with the collins r388urr 51j and tell us why you give it the rating you did required. Collins radio equipment manuals the cca is actively digitizing the usertechnical manuals for collins radios most popular equipment used for amateur radio purposes. We offer 1,762,469 manuals and guides from 52,491 brands for you to view or download. When i was a young man, i worked as a commercial radio operator at alert n. The collins 75a4 is a high quality amateur band receiver covering the frequency ranges of. Collins further guarantees that any radio transmitter described bereid will deliver 1111 radio frequeocy power output at. Rockwell collins 51s1 manuals manuals and user guides for rockwell collins 51s1.
The collins 51j4 is a general coverage communications receiver covering 550 khz to 30. I am now accepting new manuals for inclusion in this archive. The collins 516f2 is a heavyduty power supply for the kwm22a transceivers and the 32s1,2,3 series of collins transmitters. All the collins manuals and users guides are available for free view without any registration. Our goal is to make these manuals available via online download and, eventually, via cdrom for all cca members. Collins 516f2 power supply collins radio company source document. It has a double conversion, crystal controlled frontend. View online or download collins kws1 instruction book.
Vintage collins tube receiver 51j4 51j4 ham radio you are bidding on a vintage collins tube 51j4 receiver. Im referring to that small, platemounted snapswitch secured to the rear of the front panel rotary power switch. One is a panel and shelf assembly suitable for mounting in a standard rack cabinet. In the 0,51,5 segment, the 51j4 uses triple conversion, the signal will be converted to 11,510,5 mhz in the first mixer and. The signal per pective line per pective line part ii ham. The rf stage v2 feeds the mixer at the carrier frequency of the incoming signal.
D collins type number, name, and serial number of principal equipment. The 51j4 communications receiver is available in two styles. I dont know about the 51j 4 as to if the knob was an option. Cedar rapids ia, build 19571963, 36 pictures, 58 schematics, 18 tubes, united states of america. This receiver is designed for mounting in a standard 19 inch rack. Most, if not all, of the r388 receivers did not have the rectangular potted transformer. Up for sale, capacitor assembly hard to find collins receiver 51s1.
The other assembly is in a cabinet, suitable for tablemounting. The hf circuit of the 51j4 is nearly as complicated as the mechanical synchronisation of the preselection using very impressive gears. View the collins 51j4 communications receiver installation manual for free. The oak 100704 power switch pn 2598011010 used in the collins kwm22a and 32sseries units is another underrated component that is highly prone to arcover. In the 1940s and 1950s collins manufactured serveral versions of the 51j receivers.
Figure 73 is a partial schematic of the receiver, showing the complete frontend switching arrangement. Collins further guarantees that any radio transmitter described herein will deliver full radio frequency power output at the. A simplified block diagram of the 75a 4 rf system is shown in figure 4 1. Collins 51j4 service manual download, schematics, eeprom. Receivers include a collins 75a 4 a gift from the estate of k7ak, a collins 51j 4 with hammarlund hc10 ssb detector, a national hro60 used with the apache, a 1934 national hro, a stewartwarner r392, a collins r390, and a motorola r390a. Collins used a conservative standard that they referred to as. No bandwidth switch under bfopitch control, could be upgraded to 51j4 with 354a1 collins mechanical filter. These manuals are available for download and free of charge. Manual navships 92324 collins 51j4 manual reprinted by govt. Collins 51j4 communications receiver noirfilmradio. Contact and submission information below updates 20190623. Gaylord harts account of his testing of nos domino capacitors.
Collins 51j 4 product detector hi gang, ive just installed an interesting new product detector made by treetop circuits in my 51j 4. I have a 51j2 and r388 but do not have the earlier 51j and 51j1 or the later 51j4 r388a. It is the r388a that is the same receiver as the 51j4. Receivers include a collins 75a4 a gift from the estate of k7ak, a collins 51j4 with hammarlund hc10 ssb detector, a national hro60 used with the apache, a 1934 national hro, a stewartwarner r392, a collins r390, and a motorola r390a. In finland, i have seen models 51j2, 51j3 and 51j4, the latter being more common. There are a few tubes missing, all tube covers are present. Quoting their tm manuals, radio receiver r388aurr is a communications receiver, having excepcional frequency stability and calibration accuracy. Figure 32 is a block diagram of the 51s1, and figure 71 is a schematic diagram of the 51s1. The first conversion circuit, consisting of a crystal controlled oscillator, v 4 and a mixer tube, v3, converts the incoming signal to the variable if frequency of 2. A dust cover that fits over the top of the chassis is removable from the rear. I need to adjust the agc threshold pot per the manual since the agc is. Describe your experience with the collins 51j3 and tell us why you give it the rating you did required. I mentioned that the collins 51j series and r388 receivers were insensitive.
The only thing i have found is the drawing below showing an r388 used as a monitor at a. Page update february 16, 2014, collins 51j series pto rebuild. Electronic page numbers original page manual page numbers 11, 12 etc. Note that this manual is worthwhile even if you already have a 51j3 manual, as it has more info and is more complete. I need a reduction drive knob for a collins 51j4 qrz forums. Band change collins 51j4 receiver covers the frequency range of 0. Circuits affected by band changes are the rf amplifier grid, first, second, and third mixer grids, crystal selector, and crystal harmonic tuning circuits. If you have a 51j4 receiver, you should get this book. The differences between models are relatively minor, except for the inclusion of mechanical filters in model 51j4, which brought a substantial improvement in selectivity. Over the years, power cords become frayed, the electrolytic capacitors dry out, and the potted bias rectifier modules give up the ghost. The collins 516f2 power supply is used to power the collins 32s transmitters and the kwm2 transceiver. The editor and publisher assume no responsibility for the accuracy or safety of. This site helps you to save the earth from electronic waste.
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