| E2 |
Rectifier |
| E10 |
Modified R valve |
| E25 |
Tungsten anode tx valve |
| E28 |
|
| E35 |
Tubular dull emitter valve |
| E44 |
Modified MT5 tx valve |
| E50 |
Special V24 with 6 turns per cm. grid |
| E62 |
|
| E68 |
|
| E77 |
DE3 in miniature bulb |
| E102 |
DE5 type |
| E116 |
Very low impedance LS5A |
| E118 |
DET1 with heavy grid and
anode leads |
| E129 |
Modified FE1 valve with very fine grid wires |
| E130 |
Audion type valve made for Marconi Co. |
| E132 |
Triode (CV1643) |
| E133 |
Triode (CV1645) |
| E158 |
|
| E164 |
5-electrode valve with
625 barium filament |
| E181 |
|
| E196A |
Early magnetron |
| E201 |
|
| E233 |
Modified D8 |
| E235 |
Mercury rectifier |
| E242 |
Trial H210 with stranded filament supports to combat microphony |
| E246 |
|
| E272 |
CAT6 with a large anode |
| E294 |
|
| E304 |
|
| E334 |
PX4 with oxide coated filament |
| E356 |
Copper anode triode |
| E366 |
Oxide coated DA100 |
| E377 |
|
| E395 |
MS4 with mercury vapour filling |
| E410 |
|
| E414 |
DEV with 1V filament |
| E434 |
VMS4B |
| E458 |
H2 double diode |
| E469 |
|
| E504 |
Helium filled EHT rectifier |
| E514 |
|
| E521 |
ACT22 |
| E558 |
|
| E574 |
High slope PX25 |
| E589 |
|
| E603 |
|
| E632 |
Oxide PX4 |
| E675 |
ACT9 for ultra short waves |
| E686 |
Acorn pentode |
| E704 |
Modified W31 |
| E742 |
Valve similar to 304A tx valve |
| E744 |
Y63 |
| E748 |
D42 |
| E759 |
N66 |
| E770 |
ACT10 (air cooled CAT15) |
| E800 |
|
| E842 |
|
| E852 |
W63 |
| E862 |
KT66 on a 5 pin base |
| E872 |
NT65 (Navy version of
PT5) |
| E880 |
NT75 4-segment glass magnetron |
| E897 |
Tetrode (1) |
| E903 |
|
| E905 |
MHD4 special made for Cambridge Instruments |
| E936 |
Z62 (1) |
| E942 |
ACT14 (air cooled CAT6) |
| E947 | |
| E960 |
VT58 |
| E960T |
VT98 |
| E972 |
DET19 |
| E993 |
|
| E997 |
E936 with a ceramic bases (1) |
| E1001 |
Experimental acorn triode |
| E1007 |
Triode (258T) |
| E1011 |
Experimental micropup, developed into E1046? (2) |
| E1013 |
WE 212E |
| E1024 |
VT114 copper-glass tx
tetrode (CV1114) |
| E1033 |
|
| E1039 |
Attempt at glass version
of NT60 |
| E1046 |
VT90 (CV62) (or CV219?) |
| E1046A |
? (also copied by RCA as A2137) (2) |
| E1046B |
? (also copied by RCA as A2137A)(2) |
| E1046D |
See E1166 (2) |
| E1061 |
Mentioned in A Scientists
War as not traced |
| E1097 |
(CV1111) |
| E1107 |
Beam deflection VHF valve (1) |
| E1130 |
Millimicropup, 1kW pulse at 1GHz (2) |
| E1132 |
(CV1111) |
| E1143 |
(CV1577) |
| E1148 |
CV6 |
| E1149 |
Glass-metal triode (Scientists
War - not traced) |
| E1155 |
NT100 (CV44) |
| E1161 |
Triode (CV1253) |
| E1164 |
(CV1091) |
| E1166 |
E1046D, second enlargement
of micropup |
| E1180 |
(CV1077) |
| E1188 |
Experimental cavity magnetron |
| E1189 |
NT98 |
| E1190 |
Millimicropup (CV55 and
CV155) |
| E1191 |
CV12 |
| E1192 |
Beam tetrode (VT501) |
| E1198 |
CV38 |
| E1199 |
Peak voltmeter diode (CV1405) |
| E1209 |
(CV7) small gas triode |
| E1210 |
Glass magnetron for RX
use, 9.1cm |
| E1228 |
Rugged miniature wire-ended
thyratron (CV3?) |
| E1229 |
(CV4) |
| E1231 |
(CV52) concentric triode
oscillator |
| E1232 |
NT99 |
| E1233 |
Magnetron, 10cm, 50 to
100kW |
| E1234 |
Oxide coated cathode VT90 (E1046) (2) |
| E1235 |
Triode (CV1580 or CV29?) |
| E1236 |
(CV69) |
| E1239 |
Micropup, largest, oxide
coated cathode |
| E1242 |
(CV1510) |
| E1248 |
CV8 |
| E1254 |
Oscillator triode for
VT fuze |
| E1255 |
(CV40) magnetron, 10cm,
100 - 200kW |
| E1256 |
(CV42) magnetron, 9.1cm,
100 - 200kW |
| E1265 |
(CV114) |
| E1266 |
CV15 - block mounted VT90
with smaller filament |
| E1267 |
CV41 magnetron, 10.7cm,
100 - 200kW |
| E1271 |
Tetrode (CV57) |
| E1273 |
CV58 or CV258 axial mixer diode |
| E1274 |
All concentric TX triode
for <50cm |
| E1287 |
S-band magnetron (CV23?) |
| E1289 |
Thyratron (CV1248) |
| E1290 |
Triode amp., anti-microphonic |
| E1297 |
(CV5) |
| E1305 |
Grounded grid triode,
similar to RL7 |
| E1308 |
|
| E1320 |
(CV51) |
| E1323 |
Triode (CV344) |
| E1324 |
Magnetron, Scientists
War - not traced |
| E1325 |
Magnetron (CV56) strapped
E1189 |
| E1326 |
Magnetron (CV69) strapped
E1198 |
| E1330 |
(CV268, or CV123?)) |
| E1331 |
(CV1510) |
| E1332 |
Triode (CV92) |
| E1335 |
High gain rugged midget
pentode (CV61) |
| E1336 |
Triode, rugged miniature
(CV229, or CV122, or CV266,or CV267?) |
| E1337 |
(CV78) |
| E1342 |
Magnetron E1326 with reduced
anode length (CV64, or CV160, or CV186?) |
| E1344 |
Triode, common grid-earther
grid oscillator/receiver |
| E1355 |
(CV1343) |
| E1356 |
TR switch |
| E1359 |
Magnetron (CV76) cf. E1325,
25kV, 40A, 2µs, heavy duty cathode |
| E1360 |
(CV268) |
| E1362 |
(CV126) |
| E1364 |
Rugged miniature gas triode |
| E1365 |
Waveguide TR cell, 3cm
(CV114) |
| E1366 |
Midget valve for torpedo
school |
| E1368 |
Triode (CV90, or CV350?) |
| E1371 |
Diode (CV105) |
| E1373 |
Magnetron (CV99) similar
to 1325/1359, 8.5cm |
| E1374 |
Concentric valve for up
to 2GHz |
| E1378? |
May be invalid
|
| E1379 |
Magnetron (CV79) formerly
E1210DE, 6.6cm |
| E1380 |
Magnetron (CV89) formerly
E1210DE, 6.3cm |
| E1389? |
Magnetron (CV89) (MUST
BE WRONG) |
| E1411 |
CV153 |
| E1415 |
ATR cell (CV115) slotted
disc cell for 10GHz |
| E1416 |
(CV281) |
| E1417 |
TR switch (CV117) |
| E1419 |
Triode (CV154) |
| E1421 |
TR cell |
| E1423 |
Tetrode (CV406) |
| E1429 |
Magnetron (CV79) |
| E1436 |
(CV188) |
| E1440 |
Smaller version of CV90
with 2W cathode |
| E1453 |
(CV319, or CV1646?) |
| E1457 |
Large disc seal triode,
5 to 10kW pulsed at 3GHz (CV257) |
| E1458 |
Triode (CV178) |
| E1459 |
Tetrode (CV174) |
| E1463 |
Hydrogen triode, 160kW,
2500pps (CV319?) |
| E1465 |
CV115 |
| E1468 |
Noise diode (CV172) |
| E1474 |
(CV78) |
| E1480 |
Triode (1419) without
internal feedback |
| E1481 |
Magnetron CV192 (CV64
for higher input) |
| E1485 |
(CV807) |
| E1487 |
Magnetron CV208 , 12 segment,
strapped, 10GHz |
| E1488 |
(CV182) |
| E1489 |
Double pentode (CV222) |
| E1494 |
Magnetron CV191, 1487
for higher frequency |
| E1495 |
'higher power' CW valve
(CV259) "10x CV55" for 600MHz |
| E1496 |
1239 improved and modified
for lower frequencies. CV240. "4x NT99" |
| E1497 |
Hydrogen diode CV215 for
absorbing overswing energy in a network |
| E1511 |
Magnetron (CV355) High
power X-band, lower frequency than 1487 |
| E1516 |
TR switch CV221. CV114
with shorter discharge gap, wider band, gold seals, copper body |
| E1524 |
Fullwave gas rectifier
(CV338) |
| E1527 |
(CV290) |
| E1531 |
Magnetron CV214, E1494
with coaxial to waveguide feed, limited frequency range |
| E1532 |
Triode (CV1644) |
| E1541 |
Triode (CV1716) |
| E1547 |
ACT23 |
| E1563 |
(CV1863) |
| E1591 |
(CV181) |
| E1599 |
(CV273) |
| E1606 |
(CV278) |
| E1633 |
(CV456) |
| E1647 |
(CV288) |
| E1648 |
(CV135) |
| E1659 |
(CV453) |
| E1706 |
(CV437) |
| E1707 | |
| E1709 | double triode (from actual example) |
| E1714 |
(CV408) |
| E1769 |
DET24 (CV397) |
| E1795 |
|
| E1796 | KT101 (from actual example) |
| E1824 |
Tetrode? |
| E1832 |
|
| E1838 | DH81 (pen markings on actual example) |
| E1841 |
Hexode? |
| E1860 |
(CV240) |
| E1935 |
(CV415) |
| E1938 |
(CV493) |
| E1954 |
(CV25) |
| E1955 |
Thyratron (2D21) (CV797) |
| E1956 |
(CV261) |
| E1959 |
(CV495) |
| E1996 |
ACT25 (CV436) |
| E2004 |
(CV2115) |
| E2016 |
(CV1758) |
| E2018 |
(CV454) |
| E2019 | |
| E2095 |
(CV471) |
| E2112 |
|
| E2121 |
Noide diode (CV2341) |
| E2133 |
(CV2276) |
| E2134 |
Pentode (CV2179) |
| E2149 |
|
| E2163 |
(CV491) |
| E2164 |
(CV492) |
| E2178 |
|
| E2188 | |
| E2196 |
(CV3920) |
| E2218 | |
| E2221 |
(CV2277) |
| E2226 |
Output pentode |
| E2244 |
(CV3921) |
| E2266 |
Pentode (CV2231) |
| E2277 |
Pentode (13E1) |
| E2311 | |
| E2346 |
|
| E2548 |
|
| E2597 | |
| E2631 | Looks to be a halfwave rectifier (from actual example) |
| E2635 | |
| E2729 |
Triode (CV6097) |
| E2760 |
(CV5747) |
| E2788F |
(CV5405) |
| E2792 |
(CV6097) |
| E2801 |
(CV5363) |
| E2811 |
TR switch (CV5210) |
| E2815 |
Pulsed attenuator (CV5315) |
| E2908 |
Triode (CV5326) |
| E2920 | OPX1 |
| E2960 |
Geiger tube (CV6133) |
| E2975 |
Triode (CV4120) |
| E2978 |
(CV6129) |
| E2987 |
TR switch (CV5398) |
| E3000 |
(CV9774) |
| E3001 |
(CV9775) |
| E3084 |
(CV6028) |
Compiled from "The Saga
of Marconi Osram Valve", "Metres to Microwaves", "A
Scientists War", the CV Register, papers in the UK National Archive,
other references and valves in my own collection or seen elsewhere.
Please do not copy without reference!
Note that the information in brackets shows where an equivalent was listed,
but where there is insufficient information to say if it was an actual
equivalent or a possible substitute. Refs: (1) = UK National Archive AVIA 7/121 (2) AVIA 7/921