The R-390A Frequently Asked Questions Page |
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References |
This page
contains links to or other information about reference
information for the R-390 series of receivers. As such, it is
advice to those who endeavor to maintain and restore the R-390A
family of receivers. Appropriate attribution is appreciated. Contents |
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The Final Engineering Report on Radio Receivers R-389( )/URR and R-390( )/URR 1953-Sep-15, Collins Radio Company (Courtesy of Bill Hawkins) |
.PDF 1.5 MB |
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Cost Reduction Program for Radio Receivers, R390/391( )/URR Final Progress Report, Collins Radio Company (Courtesy of Bill Hawkins) |
.PDF, 76K |
Military Specification, MIL-R-13947B - Receiver, Radio (Radio Receiver R-390( )/URR) 1960-Oct-26 (Courtesy of Tom Marcotte, N5OFF) |
.PDF, 168K |
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MilSpec MIL-R-13947B, Amendment 7 1966-Jun-02 (Courtesy of Craig McCartney) |
.PDF, 392K |
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MilSpec MIL-R-13947B, Notice 1 1986-May-28 (Courtesy of Craig McCartney) |
.PDF, 17K |
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MilSpec MIL-R-13947B, Notice 2 1996-Mar-29 (Courtesy of Craig McCartney) |
.PDF, 30K |
Military Specification, MIL-PRF-3098/9F, MIL-PRF-3098/16G, MIL-PRF-3098/24D, and MIL-PRF-3098/26F Military Performance Specification Sheets for the crystals used in the R-390A (Courtesy of Nolan Lee) |
.PDF, 137K |
NAVSHIPS 0967-063-2010, Radio Receiver R-390A/URR Operation, Maintenance and Installation, 1966-Nov (Courtesy of Ed Alves, KD6EU) |
.PDF, 45 MB |
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NAVSHIPS 0967-063-2010 Temporary Change T2 (Courtesy of Ed Alves, KD6EU) |
.PDF, 504 KB |
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NAVSHIPS 0967-063-2010 Temporary Change T3 (Courtesy of Ed Alves, KD6EU) |
.PDF, 521 KB |
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NAVSHIPS 0967-063-2011, Radio Receiver R-390A/URR Manual Supplement, “Temporary Change 1 to Field Change 6”, 1969-Jun (Courtesy of Ed Alves, KD6EU) |
.PDF, 2 MB |
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NAVSHIPS 93053 Temporary Change T2 (Courtesy of Ed Alves, KD6EU and Miguel Bravo) |
.PDF, 880 KB |
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NAVSHIPS 0967-063-2012, Radio Receiver R-390A/URR Manual Supplement, 1974-Aug-01 |
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NAVSHIPS 0967-063-2013, Radio Receiver R-390A/URR Manual Supplement, 1974-Aug-01 |
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NAVSHIPS 0967-063-2014, Radio Receiver R-390A/URR Manual Supplement T-4, 1966-Nov (Courtesy of Ed Alves, KD6EU) |
.PDF, 77 KB |
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NAVSHIPS 0967-063-2031, Radio Receiver R-390A/URR Manual Supplement T1A, 1964-Nov-30 (Courtesy of Ed Alves, KD6EU and Muguel Bravo) |
.PDF, 80 KB |
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NAVSHIPS 0967-063-2032, Temporary Change T2 to Technical Manual Navships 0967-063-2030 (17 August 1967) (Courtesy of Muguel Bravo) |
.PDF, 69 KB |
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NAVSHIPS 0967-063-2040, Radio Receiver R-390A/URR Technical Performance Standards, 1961-Sep-19 |
.PDF, 159K |
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NAVSHIPS 0967-063-2050, Maintenance Standards Book for R-390A/URR (Also known as 93053.42A), Includes changes T1 (8/7/63) and T1A (11/30/64), 1963-Aug-07 |
.PDF, 3.2 MB |
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NAVSHIPS 0967-063-2060, Radio Receiver R-390A/URR Eliminating Spurious Radiation (Field Change l), 1960-Jan-11 |
.PDF, 196K |
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NAVSHIPS 0967-063-2070, Radio Receiver R-390A/URR Line Output Terminals Modification (Field Change 2), 1960-Oct |
.PDF, 150K |
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Temporary Correction T-1 to NAVSHIPS 93053, (Field Change 3), 1963-Aug-07 (Courtesy of Ed Alves, KD6EU, and Miguel Bravo) |
.PDF, 84 KB |
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NAVSHIPS 0967-063-2080, Radio Receiver R-390A/URR Changing Terminals to "AN" Type (Field Change 3), 1964-Nov-30 |
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NAVSHIPS 0967-063-2110, Radio Receiver R-390A/URR (Field Change 6), 1966 (Courtesy of Ed Alves, KD6EU and Miguel Bravo) |
.PDF, 425 KB |
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NAVSHIPS 0967-063-2111, Radio Receiver R-390A/URR Temporary Change T-1 to Field Change 6, 1969-Jun |
.PDF, 45K |
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NAVSHIPS 0967-063-2112, Radio Receiver >R-390A/URR Temporary Change T-2 to Field Change 6, 1969-Aug |
.PDF, 76K |
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NAVSHIPS 0967-063-2120, Radio Receiver R-390A/URR Reduction of Internal Interference (Field Change 7), 1967-Aug-17 |
.PDF, 530K |
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.PDF, 341K |
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EIB 836 regarding a hint to simplify the alignment of the 1st IF (Courtesy of Pete Wokoun, KH6GRT) |
.PDF, 605K |
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EIB 895 regarding adding a dropping resistor to the audio output B+ circuit to reduce the plate voltage after the radio has been converted to solid state rectifiers under Field Change Number 6 (Courtesy of Pete Wokoun, KH6GRT) |
.PDF, 523K |
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EE125-AB-OMI-010/P610 - R390A/URR (SPAWAR 0913-LP-063-2010) of 15 May 1985 (Supercedes the Navy 0967-LP-063-2010 manual of 15 April 1970) |
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.PDF, 11MB |
TO 31R1-2URR-286-WC-1 Preventive Maintenance Work Cards 1975-Jun-16 (Courtesy of Jeff Adams and J C Stott) |
.PDF, 379K |
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TO 31R1-2URR-442C Radio Receiver R-390A/URR Organization Maintenance Manual Supplement, 1967-Nov-30 |
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Drawings by Number (Courtesy of Craig McCartney) |
.PDF, 112K |
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Drawings by Name (Courtesy of Craig McCartney) |
.PDF, 112K |
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Meter faces (Visio) (Courtesy of David Goncalves) |
.VSD, 1,400K |
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Meter faces (Acrobat) (Courtesy of David Goncalves) |
.PDF, 107K |
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Meter faces (.TIF) (Courtesy of Buzz at the Military Vehicle and Radio Pages) |
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The R390A-Y2K Manual The "Re-created" 1985 Navy manual |
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Wei-Li's Pearls of Wisdom - a valuable collection of postings from the R-390A mailing list. |
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Roger Ruszkowski's R-390A Checklists - a valuable compilation of wisdom from the R-390A mailing list and other sources. |
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Perry Sandeen's R-390A Reflector - Redux - a compilation of postings from the R-390A mailing list. |
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Perry Sandeen's repaginated and edited version of "Receiver noise figure sensitivity and dynamic range - what the numbers mean" - the classic Jim Fisk article from Ham Radio Magazine of October 1975 |
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Perry Sandeen's edited version of "R-390/R-390A AGC - Ending The Moment Of Silence - The Way They Should Have Done It" - by David Wise |
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Perry Sandeen's contribution of Professor Johannes Fischer's article "The R-390A/URR and its Squelch Facility" |
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Perry Sandeen's contribution of Hammarlund 1970 R390A Sales Brochure |
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Perry Sandeen's procedure for Replacing FL101 in the R-390A |
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Perry Sandeen's procedure for improving the B+ regulator in the R-390A |
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Perry Sandeen's lists of .5 watt resistors in the R-390A and SP-600 |
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Scott Seickel's excellent R-390A Gear Train Rebuild Tutorial |
.PDF, 3.4 MB |
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Graham Baxter's R-390A Mechanical Filter Repair Tutorial - An outstanding pictoral journey through the repair of R-390A mechanical filters. |
2.7 MB |
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Graham Baxter's R-390A Audio Transformer Repair Tutorial - An enlightening pictoral treatise on the repair of R-390A audio transformer. |
.PDF, 716 KB |
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Larry Haney's R-390A Antenna Relay Repair Tutorial - An introduction to the internals of R-390A antenna relays. |
.PDF, 667 KB |
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Larry Haney's R-390A Collins PTO Observations - A look at the internals of a Collins PTO. |
.PDF, 1.8 MB |
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Larry Haney's R-390A Cosmos PTO Observations - A look at the internals of a Cosmos PTO. |
.PDF, 3.3 MB |
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Larry Haney's R-390A Power-on OA2 Regulator Observations - A look at the operation of the OA2 Regulator Tube. |
.PDF, 790 KB |
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Larry Haney's R-390A - Improved BFO Neutralization - A different method. |
.PDF, 8.2 KB |
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Larry Haney's R-390A DB Meter and S-Signal relationships - A comparative look. |
.PDF, 30.2 KB |
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Larry Haney's R390A Oscillator Output Level Effects |
.PDF, 82.7 KB |
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Larry Haney's R390A Antenna Trimmer Cap Repair |
.PDF, 1.4 MB |
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Larry Haney's AGC Fix for the Lankford SSB Mod |
.PDF, 389 KB |
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Larry Haney's R-390 Newbie Support |
.PDF, 71 KB |
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Larry Haney's R-390A Limiter Filament Dropping Resistor |
.PDF, 147 KB |
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Larry Haney's R-390A Oven Frequency Stability Report |
.PDF, 50 KB |
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Michael Crestohl and Bill Coss provided a collection of handouts from the US Navy Technical Training Center in Pensacola FL. - It is the 'A' School R-390A training handout for the Cryptological Technician Class 'A' Cryptologic Maintenance Course (A-102-109). The document is not classified and is in the public domain |
.PDF, 3.4 MB |
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I replaced the failing Collins mechanical filters in one of my R-390A's with Dave Curry's Longwave Products replacement filters. |
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R-390/URR - R-390A/URR Handboook by Paolo Viappiani, 1996, ISBN Number 9-789705-648898, published by Editrice Il Rostro, Milan, Italy (The book is written in Italian) |
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Electric Radio Magazine can be obtained from Ray Osterwald, NØDMS, ER's editor at:
Electric Radio Magazine 14643 County Road G Cortez, CO 81321-9575 A complete index to Electric Radio Magazine is available. |
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Rick Mish & Miltronix - Servicing R-390A receivers for more than 20 years |
R-390A Service |
Dave Medley, "The R-390 (EXCEPT the R-390A) Page" |
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Jan Skirrow, VE7DJX, "BoatAnchor Dreams" |
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Contributors
Barry Ornitz, WA4VZQ |
Bill Hawkins |
Bill Neill |
Chuck Rippel, WA4HHG |
Craig McCartney |
Dallas Lankford |
Ed Alves, KD6EU |
J C Stott |
Jan Skirrow, VE7DJX |
Jeff Adams, KG4RZM |
Jose Gavila, EB5AGV |
Josh Rovero, KK1D |
Michael Crestohl, W1RC |
Nelson Dionne |
Nolan Lee |
Pete Wokoun, KH6GRT |
Reid Wheeler |
Rich McClung |
Roy Morgan |
Scott Seickel |
Tom Marcotte, N5OFF |
Tom Norris, NU4G |
David Goncalves, N1XZB |
Graham Baxter, G8OAD |
Miguel Bravo |
Larry Haney |
Bill Coss, WA6SW |
Stefano Frigeri, IU2DIA |
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Send Comments to the FAQ-Meister: (root[at]r-390a[dot]net) |
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Version: 63 - - Last revision: 2020-Dec-09 |