63. English WWII Radio Surplus

Links to other pages:
52. French radio equipment used by Germans in WW2
61 American boatanchors - part I
62 American boatanchors - part II
64 Some Russian surplus equipment

91n News

R109 Receiver (1.8-3.9/3.9-8.5MHz, IF= 465kHz)
Valves: 5x ARP12, 3x AR8 (duo-diode-triode)
It is different models with different frequency ranges, one with two RF-amplifier stages.

Block diagram

Receiver chassis

Rear view showing receiver and vibrator unit
Operational voltage: 6V.D.C. 1.3A

see Wireless for the Warrior Vol. 3 for further details


Swedish Ra100 VHF transceiver (WS31, BC1000)
...really wasn't aware that the Swedish army is equipped with NATO equipment, too!
Coverage: 40-48MHz, IF: 4.3 and 2.515MHz, RF= 300mW

try my article on the WS31 at http://www.vmars.org.uk/ .  I think you will find most of what you need there,
including details for shifting its operating frequency to 6m.  The article is in the "technical articles" section -
and was in issue 7 of the VMARS Newsletter.

73s, Richard, G7RVI



WS38 Mk2, the 6V6 is a mistake and shouldn't be put in, it simply doesn't
work because the earlier owner did some changes without understanding the circuit
Coverage: 7.3-9MHz, IF=285kHz, RF=200mW



Swedish Ra130B VHF transceiver (suppose to be WS-88). Another rig from the Allies,
probably not indispensible as another mate once was refused week-end leave
from the army since the radio communication with this set was found
WS88 frequency coverage: 38-42.2MHz, IF=3MHz, RF=0.25W

Actually there are two types of WS88, type A and type B.

Type A was originally crystaled for 40-42 MHz
Type B was originally crystaled for 38-40 MHz

C12a L6a: 1900-4000kc/s
C12b L5a: 4000-8000kc/s
Valve: ARTH2
Spare: ARTH2
Vibrator: 650 (6V)
Spare: Vibrator 650

Wavemeter Class D No.1 Mk.I

At least like German equipment the 60 years old British surplus equipment needs treatment with vaseline oil (Waffen Íl) to stop corrosion on open metal surfaces and places where paint has been damaged, particularly on iron chassis, screws, vibrator holders and variable capacitors (condensers), use CRC 2-26 if the surface need contact with another electrode.

Technical data and circuit diagram: http://users.froggy.com.au/vk2zio/museum/dwave.htm

RAF Amplifier Unit Type 165

How to open WS88.
my WS88's have been rivetted in each corner.  The only way I know how to open
them is to drill out the rivets - and then replace them with a nut and bolt
of suitable size.   I have done that with a couple of sets, and no harm
seems to have been done.

The frequency range is around 38 to 42 MHz - but there are a couple of
variants - type A and type B (at least for the British Army), which cover
slightly different frequencies.  Sorry don't have exact details to hand -
perhaps someone else can oblige. 

I have worked with a friend here on moving the WS88 to 6m, but it is far
from simple - the very dense construction does not make the job easy, and
the fact that few of the RF circuits are properly screened means that
unpleasant feedback effects occur.  Although we made a set tune around
50MHz, the performance was not good - Rx sensitivity was poor - needs more

73s, Richard, G7RVI

VHF transmitter unit type 50 (RAF)




Type number
Transmitter type 50 (RAF)