Racal type numbers
I have added this section to help identify the variations in the More Common Racal units to be found.I have further info here on many other type numbers, they will be added as and when I get time.
I would like to thank John Whitehouse G6LJU for his considerable effort in supplying me the info used on this page.
| RA17B | Four Bandwidth Model of RA17 |
| RA17C | American Style RA17 |
| RA17C-2 | Canadian Army Model with modified BFO and MHZ drive otherwise as RA17C-3 |
| RA17C-3 | Standard American style model with silicon power rectifiers and 75 ohm wideband termination. |
| RA16C-5 | As RA17C-3 but with +- 6khz BFO range |
| RA17C-6 | As for RA17C-3 with double tuned circuits and AVC in RF Stage |
| RA17C-7 | RA17C-6 partially converted to UNF screw threads |
| RA17C-8 | RA17C-3 with time delay compensated I.F circuits |
| RA17C-9 | RA17C-3 for use in RA78B |
| RA17C-10 | Built to special order only ???? |
| RA17C-11 | Built to special order only RA17C-3 with time delay compensated I.F Bandwidth of 1.2 , 3 , 8 ,khz plus additional I.F output of 5 khz bandwidth |
| RA17C-12 | Standard American style RA17 mk3, UNF threads throughout ,1w A.F out. |
| RA17C-13 | Special order only, As RA17C-12 but with pentode RF stage and dial brake on MHZ control. |
| RA17C-14 | Special order only Broadcast version of RA17C-12 with bandwidths of 1.2 , 3 , 5 , 7 , 9 , and 13 khz |
| RA17C-15 | Special order only RA17C-12 modified for use with MA78B |
| RA17C-16 | RA17C-12 modified for Dutch Army |
| RA17C-16/1 | Special for Netherlands |
| RA17C-17 | As RA17C-12 modified for use with MA257 |
| RA17C-18 | RA17C-12 with time delay compensated I.F bandwidths of 1.2 , 3 , 6.5 , and 13 khz and additional I.F output 5-8 khz bandwidth |
| RA17C- 19 | RA17C-12 modified for use with RA78D and RA66 |
| RA17C-26 | Modified RA17C-12 for use with RA66 |
| RA17D | American style receivers with 13 khz bandwidth in place of 3khz |
| RA17E | RA17 receiver 13 khz bandwidth in place of 3 khz |
| RA17F&G | RA17 mk2 with 6ba6 compensated I.F circuits |
| RA17H | RA17 with time compensated delay I.F circuits |
| RA17J | RA17 double tuning in AVC and RF stages |
| RA17K | RA17 mk2 for use with RA78 |
| RA17L | Standard British version of RA17 mk3 |
| RA17L-2 | RA17L with UG aerial socket |
| RA17L-3 | RA17L with Thorn Pigmy connector |
| RA17L-4 | RA17L modified for use with MA1350A |
| RA17L-5 | RA17L modified for use with MA1350A and RA66B ( RA17C-25) |
| RA17L-6 | Modified RA17L for use with RA66 by addition of MA251 |
| RA17N | Special version with 1.6 mhz IF stage and coupling facilities for use with MA143 |
| RA17P | Broadcast version of RA17L with bandwidths of 1.2 , 3 ,5 ,7 ,9 and 13 khz |
| RA17R | RA17L modified for use in RA78 |
| RA17R-1 | RA17R modified for use with RA66B by addition of MA251 supplementary to mods to operate in MA78 |
| RA17T | As RA17L but with IF bandwidths of 200hz, 500hz, 1.2 , 2 , 4 ,13 khz also IF/RF Gain control is disabled when AGC is switched on.(Special mod) |
| RA17U | RA17L modified for use with MA257 |
| RA17W | As RA17L but with IF bandwidth of 200hz, 500hz, 1.2, 2 , 4, 13 khz also IF/RF Gain control is disabled when AGC is switched on.(Special mod) |
| RA63A | SSB Adaptor (100kHz input). |
| RA63B | North American Version |
| RA63C | SSB Adaptor 455 khz input |
| RA63D | SSB adaptor 100 khz input Crystal Controlled |
| RA63E | SSB Adaptor (455kHz input) (RA63/A/RA73). |
| RA63F | Not allocated. |
| RA63H | Ruggedized version of RA63B |
| RA63G | Ruggedized version of RA63A |
| RA63K | Ruggedized version of RA63D |
| RA63L | Ruggedized version of RA63E |
| RA63M | Ruggedized version of RA63C |
| RA66 | Panoramic Adaptor for RA17 |
| RA66B | Panoramic adaptor for RA17 and Mufax Recorder |
| RA66B-1 | RA66B modified with American Valves, plugs, sockets |
| RA78A /B | Frequenct measuring receiver (RA17/SA21/SA77) |
| RA78A-1 | Frequenct measuring receiver (RA17C-15/RA137D/SA21/SA77) |
| RA78G | Frequenct measuring receiver (RA17R/SA53C/SA77) |
| RA78H | Frequenct measuring receiver (RA17C-15/SA53C/SA77) |
| RA78J | Frequenct measuring receiver (RA17R/RA137C/SA535C/SA77) |
| RA78K | Frequenct measuring receiver (RA17C-15/RA137D/SA535C/SA77) |
| RA78L | Frequenct measuring receiver (RA17C-15/RA237D/SA535C/SA77) |
| RA78M | Frequenct measuring receiver (RA17R/RA237D/SA77/SA535C) |
| MA79A | Universal Transmitter Drive Unit with internal 1 mhz standard |
| MA79 A-mod 1 | As MA79A but with tone/dc convertor LA255 |
| MA79B | As MA79A but with external 1 mhz standard |
| MA79D | Universal Transmitter without modulation |
| MA79E | As MA79A modified for Royal Navy |
| MA79G | As MA79A but with facilities for MA175 & MA 202 |
| MA79H | As MA97G but with MA284 fitted |
| RA98A | ISB Adaptor with AFC |
| RA98B | North American version |
| RA98B-1 | RA98B modified for all American Plugs,Valves,Sockets |
| RA98C | Broadcast Version of RA98B |
| RA98C-1 | RA98C modified to fit Receiver Terminal RA133 |
| RA98D | ISB/SSB Adaptor |
| RA98E | RA98D Adapted for use with the RA217 |
| RA98F | RA98A adapted for use with RA317 for Royal Air Force |
| RA117 | HF receiver with 1.6 mhz IF |
| RA117A-1 | RA117A modified with American plugs and valves |
| RA117A-2 | Ra117A modified for use with MA282/RA66B |
| RA17C | Broadcast version without crystal bandwidths |
| RA117C-1 | RA117 modified for use with RA220B |
| RA117C-2 | RA117C modified for use with RA133A |
| RA117D | special for RA167. Replaced with RA273 |
| RA117E | Royal Navy Version for RA220 |
| RA117F | Swedish version of RA117A |
| RA117Q | HF receiver double tuned RF and 60 khz if bandwidth. North American version |
| RA117Q-2 | British version of RA117Q |
| RA117R | As RA117Q but with 100 khz if centered on 100khz |
| RA117S | Special for GCHQ Tewkesbury ref Tx |
| RA121A | 100 khz ISB Adaptor |
| RA121B | 100 khz ISB Adaptor North American version |
| RA121C | 465khz ISB Adaptor |
| RA137A | 10-980 khz LF converter with tuned calibrated input for use with RA17 series |
| RA137B | As RA137A North American Version |
| RA137C | As RA137A modified for use with RA78E |
| RA137D | As RA137B modified with RA78F |
| MA197A | HF receiver pre selection and protection unit 2-30 mhz |
| MA197B-1 | As MA197A for Royal Air Force |
| MA197B-2 | AS MA197A for use with RA133 and general commercial applications |
| MA197B-3 | As MA197B but for Dutch Navy |
| MA197C | Modified MA197B-1 for use with RA17/117 and RA217/1217 |
| RA217A | Transistorised HF Communications Receiver |
| RA217B | As RA217A but for use with MA329B |
| RA217C | RA217 for use it RTA382 |
| RA217D | For use in assembly RA329B |
| RA217Q | RA217 with 100khz IF filter based on 100 khz |
| RA217R | RA217 with 11 inch front panel. Military version |
| RA218 | ISB Adaptor with fine tuning and 100Khz input. (RA117) |
| RA220 | RA117E/MA218/MA150E/MA197B |
| RA220B | RA117C-1/MA150G/MA197B/RA218A |
| RA220C | RA1127/RA218/MA79/MA250B |
| RA220D | RA117E/RA218/MA97B fitted in 6ft rack assembly with desk unit |
| RA222A/G/M | 1-8 Channel transistorised receiver ssb/am/cw 12 or 24V |
| RA222B | As above but with squelch unit |
| RA222C | As RA222A/G/M but with remote control unit |
| RA222D | as above with squelch unit added |
Thats it for now.... I will add to the list when I get a bit more time.