The Wireless-Set-No19 Group
Royal Signals
www.royalsignals.org.uk

www.MegaCycles.co.uk   -   www.KiloCycles.co.uk
The WS19 website is best viewed at 1024 x 768

WS19 Logo

The WS No 19 Established & Designed in England 1940
Royal Signals Established 28 June 1920

For the open exchange of information and opinions about collecting, restoring, maintaining and operating the Wireless Set No. 19 and all other radios, as well as line and other forms of comms equipment, used by the Allied forces before, during and after World War II. For organising operating events with the broadest possible participation. ALL collectors of vintage military communications equipment are most welcome.

 

The following information on FX and LA Ferrites

has been made available from Alan Gall

Click here for contact details

FX1007
E-cores, 2 cores Min, mu = 1150 min.
Small sig applications.
L41 x H44 x W9mm.

FX1052
E-cores, 2 cores Min, mu = 900 min.
Small sig applications.
L13 x H13 x W3mm.

FX1053
I-core, used with FX1052
mu = 700, E & I

FX1054
Tube, Ref 3.

FX1060
Tube, A1 material, Ref 4.

FX1065
Tube, B2 material, Ref 4.

FX1068
Tube, Ref 3.

FX1073
E-core, 2 cores Min,(2e5).
mu = 1150.

FX1076
Toroid, A4 material,
Uncoated.

FX1082
Rod, Ref 3.

FX1085
Tube, B2 material, Ref 4.

FX1095
Tube, B2 material, Ref 3 & 4.

FX1097
Tube, Ref 3.

FX1098
Tube, Ref 3 & 4.

FX1099
Rod Ref 3.

FX1105
E-core, mu = 1150 Min.
Dimensions, 30 x 25 x 12mm.

FX1107
I-core, used with FX1007
Dimensions, 41 x 28 x 9mm.

FX1108
Toroid, Ref 3.

FX1111
Tube, Ref 3.

FX1112
Tube, Ref 3.

FX1115
Beads, screening, A1 material,
Ref 4.
Out Dia 4.15mm.
In Dia 1.55mm.
Hi 5.6mm.

FX1128
Tube, Ref 3.

FX1130
Rod Ref 3.

FX1133
Rod, Ref 3.

FX1135
Tube, A1 material, Ref 4.

FX1142
Rod, Ref 3.

FX1145
Tube, A1 material, Ref 4.

FX1147
Rod, Ref 3.

FX1156
Tube, Ref 3.

FX1158
Tube A1 material, Ref 4.

FX1159
Tube, Ref 3.

FX1164
Tube, A1 material, Ref 3 & 4.

FX1178
Tube, A2 material, Ref 4.

FX1188
Tube, A1 material, Ref 4.

FX1229
Rod, Ref 3.

FX1230
Toroid, Tube, A1 material, Ref 3.

FX1238
E-cores, A13, (3h1) mu = 1150 Min.
2 cores small sig application.

FX1231
Toroid, Ref 3.

FX1239
E-cores, Min 2 cores, B2, Ref 4.

FX1242
Bead, screening, B2, Ref 4.

FX1243
Tube, A4 material.
Ref 3.

FX1247
Rod, Ref 3.

FX1265
Same size as FX1105
but in B2 material
for drawing see Mullard file.

FX1299
Toroid, Ref 3.

FX1302
Rod, Ref 3.

FX1304
Tube, Ref 3.

FX1315
E-cores,
Dimensions, 2 ends, 40 x 48 x 15mm
mu = 1150 Min.

FX1322
Toroid, Ref 3.

FX1346
Rod, Ref 3.

FX1354
Rod, Ref 3.

FX1355
Rod, Ref 3.

FX1358
Toroid, Ref 3 & 4.

FX1359
Tube, Ref 3.

FX1360
Tube Ref 3.

FX1361
Tube, Ref 3.

FX1362
Rod, Ref 3.

FX1381
Rod, Ref 3.


FX1393
Tube, A1 material
Ref 4.

FX1398
Rod, Ref 3.

FX1447
Tube, A4 material
Ref 4.

FX1455
Tube, B2 material
Ref 4.

FX1459
Rod, Ref 3.

FX1467
Tube, Ref 3 & 4.

FX1474
Tube, Ref 3.

FX1478
Tube, Ref 3 & 4,
B2 material.

FX1487
Tube, Ref 3.

FX1488
Tube, Ref 3.

FX1505
Tube, Ref 3.

FX1507
Tube, Ref 3.

FX1516
Bead, screening, 2 hole, B2.
12.4 long, 5.9 Dia, holes 0.7mm

FX1582
Toroid, A4, 25.4 x 19 x 4.8mm
Uncoated, Ref 4.

FX1583
Toroid, Ref 3.

FX1584
Toroid, Ref 3 & Ref 4.

FX1585
Toroid Ref 3.

FX1586
Toroid A4 38.1 x 25.4 x 6.3mm, Uncoated

FX1587
Toroid B1 38.1 x 25.4 x 6.3mm, Uncoated

FX1588
Toroid B2 38.1 x 25.4 x 6.3mm, Uncoated

FX 1589
Toroid B3 38.1 x 25.4 x 6.3mm, Uncoated

FX1590
Toroid B4 38.1 x 25.4 x 6.3mm, Uncoated

FX1591
Toroid Ref 3.

FX1593
Toroid A4 12.7 x 8.3 x 3.2mm, Uncoated

FX1594
Toroid B1 12.7 x 8.3 x 3.2mm, Uncoated

FX1595
Toroid B2 12.7 x 8.3 x 6.3mm, Uncoated

FX1596
Toroid Ref 3.

FX1597
Toroid Ref 3.

FX1598
Toroid B5 12.7 x 6.3 x 3.2mm, Uncoated

FX1652
E cores, Dimensions for two cores
20 x 19 x 5mm, mu = 1150 Min
Small signal application.

FX1653
E cores, Dimensions for two cores
90 x 63 x 24mm, mu = 1150 Min
Small signal application.

FX1818
E cores, Dimensions for two cores
42 x 35 x 9mm, mu = 1150 Min
Small signal application.

FX1897
Tube, D4 Ref 4.

FX1819
E cores, mu = 1150
2 cores, 56 x 58 x 13mm

FX1898
Screening bead, 6 holes, B2
o.d. 6.3 x 10.5mm
hole Dia 0.6mm

FX2049
Double Aperture core, B2
13 x 8 x 6mm

FX2236
Pot core 14mm, A13 (3h1)
mu = 950,
Transformer, Former DT2202 one section.
DT2279 two sections.
Ring DT2351
Clips DT 2352
Board DT2354

FX2239
4 slot.
Pot core, 21mm, A13 (3h1) mu = 1150 Min.
Transformer.
Former DT2204 (1 section)
DT2282 (2 section)
Ring DT2361
Clips DT2357
Board DT2364


FX2238

Pot core, 18mm, A13 (3h1) mu = 1150 Min.
Transformer.
Former DT2178 (1 section)
DT2281 (2 section)
Ring DT2356
Clips DT2357
Board DT2359

FX2240
Pot core, 25mm, A13 (3h1) mu = 1200 Min.
Transformer.
Former DT2179 (1 section)
DT2283 (2 section)
Ring DT2366
Clips DT2367
Board DT2369

FX2241
Pot core, 30mm, A13 (3h1) AL = 5815 Min.
Transformer.
Former DT2205 (1 section)
DT2284 (2 section)
Ring DT2371
Clips DT2372
Board DT2374

FX2242
Pot core, 35mm, A13 (3h1) AL = 6950 Min.
Transformer.
Former DT2180 (1 section)
DT2285 (2 section)
Ring DT2376
Clips DT2377
Board DT2379

FX2243
Pot core, A13, (3h1) 45mm, AL = 8830 Min
Transformer, Former DT2206 one section.
Ring DT2501
Clips DT2502
Board DT2504

FX2246
Tube, A2, Ref 4.

FX2249
Double aperture core, B1
10. x 5.4 x 10.9mm
Full channel.

FX2431
Single aperture core, B1,
8 x 2 x 6mm


FX2501
Pot core, A13 (3h1), 10mm, AL = 1205 min.
Transformer, Former DT2109
Ring DT2341
Clip DT2342
Board DT2344

FX2502
Pot core, A13 (3h1), 12mm, mu = 900 min.
Transformer, Former DT2170
Ring DT2346
Clip DT2347
Board DT2348

FX2633
Single aperture core, A13, 8 x 2 x 6mm.

FX2634
Double aperture core, A13, 10.9 x 5.4 x 10.9mm

FX2691
Toroid, A13, 13.7 x 6.3 x 3.2mm, Not coated.

FX2754
Double aperture core, A13, 13 x 8 x 3.2mm.

FX2837
Double aperture core, A8, 10.9 X 5.4 X 10.9.
Hall channel.

FX2856
X core, X22, mu = 1440 Min.

FX2857
X core, X30, mu = 1525 Min.

FX2858
X core, X35, mu = 1580 Min.

FX3008
Toroid, A13, 12.7 x 6.3 x 3.2mm,
Coated.
Special product, A4.

FX3009
Toroid, A13, 12.7 x 6.3 x 3.2mm,
Coated.
Special product, A4.
AL = 710.

FX3234
U60 / 35 / 15, A16 (3c8).
Rectangular, Satin finish.

FX3235
U60 / 55 / 15, A16 (3c8).
Rectangular, Satin finish.

FX3239
Toroid, 6 / 4 / 2, (3e3).
Replaced with toroid in (3e5), mu = 10,000

FX3280
Pot core, A8 (3e4), 10mm, AL = 2,493 Min.
Transformer, see FX2501.

FX3286
Pot core, A8 (3e4), 30mm, AL = 11,250.
Transformer, see FX2241.

FX3287
Pot core, A8 (3e4), 35mm, AL = 13,350.
Transformer, see FX2242.

FX3288
Pot core, A8 (3e4), 45mm, AL = 15,000 Min
Transformer, see FX2243

FX3311
Toroid, A8, 12.7 x 6.3 x 3.2mm,
Not coated.

FX3312
Toroid, A8, 25.4 x 19 x 4.8mm,
Not coated.

FX3313
Toroid, A8, 38.1 x 25.4 x 6.3mm,
Not coated.

FX3316
Double aperture core, A8, 10.8 x 5.4 x 6mm,
Half channel.

FX3432
RM6-s, TFR A13(3h1), AL = 1,930 Min.
Bobbins DT2491 4 pin
DT2492 6 pin
DT2494 d/s 6 pin
DT2498 + earth tag, DT2398 no spike.

FX3433
RM6-s, TFR A13 (3h1), AL = 2,000 Min
Former DT2467 one section 4 pin
DT2517 one section 6 pin
DT2477 two section 6 pin
DT2398 no spike
DT2498 with spike.

FX3434
RM7, TFR A13 (3h1), AL = 2,230 Min.
Former DT2468 one section 4pin
DT2391 one section 5 pin
DT2392 one section 8 pin
DT2523 two section 8 pin
DT2387 no spike
DT2487 With spike.

FX3435
RM8, TFR A13 (3h1), AL = 2,400 Min.
former DT2470 one section 4 pin
DT2480 one section 8 pin
DT2481 two section 8 pin
DT2396 no spike
DT2497 with spike.

FX3436
RM10, TFR A13 (3h1), AL = 3,260 Min.
Formers DT2534 one section 5 pin
DT2335 one section 8 pin
DT2641 one section 5 pin
DT2642 one section 8 pin
DT2644 one section 12 pin
DT2539 two section 8 pin
DT2643 two section 8 pin
DT2645 two section 12 pin
Clips DT2406 no spike
DT2506 with spike.

FX3437
RM6-s, TFR A8 (3e4), AL = 3,300 Min.
Accessories see FX3432.


FX3438
RM6-r, TFR A8 (3e4),AL = 3,560 Min.
Accessories see FX3433.

FX3439
RM7, TFR A8 (3e4), AL = 4,200 Min.
Accessories see FX3434.

FX3440
RM8, TFR A8 (3e4), AL = 6,450 Min.
Accessories see FX3435.

FX3441
RM10, TFR A8 (3e4), AL = 6,450 Min
Accessories see FX3436.

FX3574
E-Core, E41 / 22 / 9, A16 (3c8).

FX3579
E-Core, E54 / 13 / 8, A16 (3c8).

FX3590
E-Core, E25 / 9 / 12, A16 (3c8).

FX3591
E-Core, E25 / 9 / 6, A16 (3c8).

FX3604
U15 / 11 / 6, A16 (3c8).
Rectangular section.
Former DT2607 4 pin.

FX3605
U20 / 16 / 7, A16 (3c8).
Rectangular Section.
Former DT2608 4 pin

FX3606
U25 / 20 / 13, A16 (3c8).
Rectangular section
Former DT2609 10 pin.

FX3607
E-Core, E42 / 21 / 20, A16 (3c8.)
Transformer core 330Watts at 25Khz, Push Pull.

FX3608
E-Core, E55 / 28 / 21, A16 (3c8).
Transformer Core 600 Watts at 25Khz Push Pull.

FX3609
E-Core, E55 / 28 / 25, A16 (3c8).

FX3670
RM8, A16 (3c8)
Transformer Core
Former DT2470 4 pin
DT2480 6 pin
Clips DT2396 or DT2496.

FX3676
U10 / 8 / 3. A16 (3c8)
Rectangular section
Former DT2606 4 pin.

FX3687
E-Core, E42 / 21 / 20, A16 (3c8).
Gapped.

FX3688
E-Core, E55 / 28 / 21, A16 (3c8).
Gapped.

FX3689
E-Core, E55 / 28 / 25, A16 (3c8).
Gapped.

FX3690
E-Core, E186 / 76 / 30, A16 (3c8).

FX3720
EC-Core, EC35 / 17 / 10, A16 (3c8).
Transformer core 100Watt at 25Khz Push Pull.

FX3721
EC-Core, EC35 / 17 / 10, A16 (3c8).
Gapped.
Former DT2723 Solder Tag DT2700
DT2724.

FX3730
EC-Core, EC41 / 19 / 12, A16 (3c8).
Transformer core 150Watt at 25Khz push Pull.

FX3731
EC-Core, EC41 / 19 / 12, A16 (3c8).
Formers DT2733 solder tags DT2700
Formers DT2734 solder tags DT2701


FX3740
EC-Core, EC52 / 24 / 14, A16 (3c8).
Transformer core 300Watt at 25Khz Push Pull.
Formers DT2743, DT2744. Solder tags DT2700, DT2702.

FX3741
EC-Core, EC52 / 24 / 14, A16 (3c8).
Gapped
Formers & Tags as FX3740.

FX3750
EC-Core, EC70 / 34 / 17, A16 (3c8).
Transformer core 700Watts at 25Khz Push Pull.
Formers DT2753, DT2754.
Solder Tags DT2700, DT2702.

FX3751
EC-Core, EC70 / 34 / 17, A16 (3c8).
Gapped
Formers & tags as FX3750.

FX3837
U30 / 25 / 16, A16 (3c8).
Rectangular section
Former DT2610 10 pin.

FX3838
E-Core, E44 / 17 / 18, A16 (3c8)
Circular centre pole for telephony line Hybrid Transformer.
Clamp DT2640.

FX3839
A special gapped version of FX3838.

FX3845
E-Core, E65 / 33 / 27, A16 (3c8).
Transformer core 1000Watts at 2Khz Push Pull.

FX3848
Toroid, 13.2 x 5.4 x 4.1mm, A16 (3c8).
Nylon coated for use in AC motor speed control.

FX3849
Toroid, 27.6 x 17.1 x 6.3, A16 (3c8).
Nylon coated for use in AC motor speed control.

FX3850
Toroid, 6 x 4 x 2mm, (4c6)
Nylon coated.


FX3851
Toroid, 9 x 6 x 3mm, (4c6)
Nylon coated.


FX3852
Toroid, 14 x 9 x 5mm, (4c6)
Nylon coated.

FX3853
Toroid, 23 x 14 x 7mm, (4c6)
Nylon coated.

FX3854
Toroid, 36 x 23 x 15mm, (4c6)

FX3860
U100 / 57 / 25. A16 (3c8)
Associated with I-core FX3861.

FX3861
I-core, I100 / 25 / 25. A16 (3c8)
Rectangular section, associated
with FX3860.

FX3862
U93 / 76 / 30. A16 (3c8)
Rectangular section, associated
with I-core I93 / 30 / 30. FX3863.

FX3863
Rectangular section.
I-core, I93 / 30 / 30. A16 (3c8)
Associated with U-core, FX3862.

FX3865
E-core, E65 / 33 / 27. A16 (3c8)
Gapped.

FX3920
RM10, A16 (3c8)
Transformer core,
Former DT2614 (0 pins)
DT2534, DT2641 (5 pins)
DT2535, DT2642 (8 pins)
DT2406, DT2506 Clips.


FX3970

RM6-s, A16 (3c8)
Transformer core,
Formers DT2491 (0 pins)
DT2492 (6 pins)
DT2398, DT2498 Clips.

FX3971
Special Product.
RM10, TFR A8 (3e4), AL = 7875 Min
Accessories see FX3436.

FX3980
RM14, A16 (3c8),
Transformer core,
Bobbin DT2631 (12 pins)
DT2632 (0 pins)
Clips DT 2623.

FX3991
A13, 10.8 x 5.4 x 6.
Double aperture core .

FX4000 to FX4009
Suppression beads.

FX4010 to FX4025
Suppression beads
RFI suppression in 3s2.

FX4026 to FX4041
Suppression beads
RFI suppression in 4s3.

FX4050
Toroid, 4 x 2.2 x 1.1mm (3e2)
Nylon coated.

FX4051
Toroid, 6 x 4 x 2mm (3e2)
Nylon coated.

FX4052
Toroid, 9 x 6 x 3mm (3e2)
Nylon coated.

FX4053
Toroid, 14 x 9 x 5mm (3e2)
Nylon coated.

FX4054
Toroid, 23 x 14 x 7mm (3e2)
Nylon coated.

FX4060
Toroid, 4 x 2.2 x 1.1mm (3h2)
(A13), Nylon coated.

FX4061
Toroid, 6 x 4 x 2mm, A13 (3h2)
Nylon coated.

FX4062
Toroid, 9 x 6 x 3mm, A13 (3h2)
Nylon coated.

FX4063
Toroid, 14 x 9 x 5mm, A13 (3h2)
Nylon coated.

FX4064
Toroid, 23 x 14 x 7mm, A13 (3h2)
Nylon coated.

FX4072
Toroid, 29 x 19 x 7.5mm, (3e1)
Nylon coated.

FX4073
Toroid, 36 x 23 x 10mm, (3e1)
Nylon coated.

FX4074
Toroid, 36 x 23 x 15mm, (3e1)
Nylon coated.


References:
1. Mullard Short Form Guide 1984/85
2. Mullard Quick Reference Guide 1977/78
3. Mullard Ferroxcube for Industry 1958
4. Marconi specification WIS8857

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