Valve Equivalents for the RA17L British Version

• 10 CV138 high slope RF pentodes, V1, V2, V5, V6, V8, V10, V12, V19, V22, V23,
• 4 CV454 vari-mu RF pentodes, V14 - V17,
• 2 CV3998 pentodes, B9A base,V7, V9,
• 2 CV4012 Heptode frequency changers, V11, V13,
• 2 CV140 double diodes, V18, V21,
• 1 CV5331 double triode, B9A base,V3,
• 1 CV1377 rectifier, Octal base,V20,
• 1 CV2209 dual control pentode, V4,
• 1 CV469 diode (early models only), wire ended sub-miniature, V24.

WARNING

There are two distinct models of RA17L, the British Military version, which uses CV numbered valves and the North American model, which uses U.S. commercial valves. The valve sets for these two models are different. Several valves, whilst similar in function, have a different pin-out. Inserting the valve from the other set will almost certainly result in destruction of the valve and may cause damage to other components.  In particular, many substitution guides give 6AS6 or its variants as equivalents for the S6F33 (special 6F33 - V4). In fact the connections to G2 and G3 are reversed and the connections to the base _must_ be changed to do this substitution.
Where U.S. numbered equivalents are shown for CV valves below, they may be safely substituted in British versions.

Valve Equivalents

* this is a special quality type
@ this is not a direct substitute, but will work in an RA17L.