Code chart for Tesla tubes from 1947 to the end 1984 → Articles → Tubes-Store.com

Code Mon Year Code Mon Year Code Mon Year Code Mon Year Code Mon Year

FD 1 1947 BT 1 1951 QU 1 1955 YM 1 1959 UA 1 1963

FH 2 1947 BU 2 1951 QV 2 1955 YN 2 1959 UB 2 1963

FL 3 1947 BV 3 1951 QW 3 1955 YO 3 1959 UC 3 1963

DR 4 1947 FP 4 1951 UO 4 1955 EW 4 1959 AM 4 1963

DS 5 1947 FQ 5 1951 UP 5 1955 EX 5 1959 AN 5 1963

DT 6 1947 FR 6 1951 UQ 6 1955 EY 6 1959 AO 6 1963

AA 7 1947 KL 7 1951 YA 7 1955 LD 7 1959 GR 7 1963

AF 8 1947 KM 8 1951 YB 8 1955 LE 8 1959 GS 8 1963

AH 9 1947 KN 9 1951 YC 9 1955 LF 9 1959 GT 9 1963

GL 10 1947 OG 10 1951 CK 10 1955 RR 10 1959 NU 10 1963

GM 11 1947 OH 11 1951 CL 11 1955 RS 11 1959 NV 11 1963

GN 12 1947 OJ 12 1951 CM 12 1955 RT 12 1959 NW 12 1963

IA 1 1948 SC 1 1952 HT 1 1956 XA 1 1960 TD 1 1964

IB 2 1948 SD 2 1952 HU 2 1956 XB 2 1960 TE 2 1964

IC 3 1948 SE 3 1952 HV 3 1956 XC 3 1960 TF 3 1964

KH 4 1948 GX 4 1952 LG 4 1956 DO 4 1960 ZX 4 1964

KJ 5 1948 GY 5 1952 LH 5 1956 DP 5 1960 ZY 5 1964

KK 6 1948 GZ 6 1952 LJ 6 1956 DQ 6 1960 ZZ 6 1964

PB 7 1948 AU 7 1952 ZD 7 1956 KU 7 1960 FA 7 1964

PC 8 1948 AV 8 1952 ZE 8 1956 KV 8 1960 FB 8 1964

PD 9 1948 AW 9 1952 ZF 9 1956 KW 9 1960 FC 9 1964

NB 10 1948 ER 10 1952 TW 10 1956 QJ 10 1960 SJ 10 1964

ND 11 1948 ES 11 1952 TX 11 1956 QK 11 1960 SK 11 1964

NF 12 1948 ET 12 1952 TY 12 1956 QL 12 1960 SL 12 1964

BA 1 1949 JN 1 1953 AB 1 1957 WE 1 1961 YP 1 1965

BC 2 1949 JO 2 1953 AC 2 1957 WF 2 1961 YQ 2 1965

BE 3 1949 JP 3 1953 AD 3 1957 WG 3 1961 YR 3 1965

HF 4 1949 NJ 4 1953 GA 4 1957 CS 4 1961 EG 4 1965

HG 5 1949 NK 5 1953 GB 5 1957 CT 5 1961 EH 5 1965

HJ 6 1949 NL 6 1953 GC 6 1957 CU 6 1961 EJ 6 1965

EK 7 1949 RD 7 1953 NX 7 1957 JH 7 1961 LS 7 1965

EM 8 1949 RE 8 1953 NY 8 1957 JJ 8 1961 LT 8 1965

EO 9 1949 RF 9 1953 NZ 9 1957 JK 9 1961 LU 9 1965

LP 10 1949 VA 10 1953 TG 10 1957 PN 10 1961 RN 10 1965

LQ 11 1949 VB 11 1953 TH 11 1957 PO 11 1961 RO 11 1965

LW 12 1949 VC 12 1953 TJ 12 1957 PP 12 1961 RP 12 1965

CE 1 1950 ZR 1 1954 ZK 1 1958 VK 1 1962 DW 1 1966

CG 2 1950 ZS 2 1954 ZL 2 1958 VL 2 1962 DX 2 1966

CO 3 1950 ZT 3 1954 ZM 3 1958 VM 3 1962 DY 3 1966

OP 4 1950 DL 4 1954 FT 4 1958 BB 4 1962 XD 4 1966

OR 5 1950 DM 5 1954 FU 5 1958 BD 5 1962 XE 5 1966

OS 6 1950 DN 6 1954 FV 6 1958 BF 6 1962 XF 6 1966

MT 7 1950 SX 7 1954 MP 7 1958 HQ 7 1962 KR 7 1966

MU 8 1950 SY 8 1954 MQ 8 1958 HR 8 1962 KS 8 1966

MV 9 1950 SZ 9 1954 MR 9 1958 HS 9 1962 KT 9 1966

VX 10 1950 MD 10 1954 SF 10 1958 OD 10 1962 QA 10 1966

VY 11 1950 ME 11 1954 SG 11 1958 OE 11 1962 QB 11 1966

VZ 12 1950 MF 12 1954 SH 12 1958 OF 12 1962 QC 12 1966

XU 1 1967 JD 1 1971 QM 1 1975 ED 1 1979 YS 1 1983

XV 2 1967 JE 2 1971 QN 2 1975 EE 2 1979 YT 2 1983

XW 3 1967 JF 3 1971 QO 3 1975 EF 3 1979 YU 3 1983

AJ 4 1967 UL 4 1971 BG 4 1975 IU 4 1979 HN 4 1983

AK 5 1967 UM 5 1971 BH 5 1975 IV 5 1979 HO 5 1983

AL 6 1967 UN 6 1971 BJ 6 1975 IW 6 1979 HP 6 1983

MX 7 1967 EA 7 1971 ZU 7 1975 LX 7 1979 DD 7 1983

MY 8 1967 EB 8 1971 ZV 8 1975 LY 8 1979 DE 8 1983

MZ 9 1967 EC 9 1971 ZW 9 1975 LZ 9 1979 DF 9 1983

TA 10 1967 WU 10 1971 JX 10 1975 GO 10 1979 KX 10 1983

TB 11 1967 WV 11 1971 JY 11 1975 GP 11 1979 KY 11 1983

TC 12 1967 WW 12 1971 JZ 12 1975 GQ 12 1979 KZ 12 1983

BM 1 1968 AX 1 1972 SP 1 1976 XJ 1 1980 IL 1 1984

BN 2 1968 AY 2 1972 SQ 2 1976 XK 2 1980 IM 2 1984

BO 3 1968 AZ 3 1972 SR 3 1976 XL 3 1980 IN 3 1984

KD 4 1968 NA 4 1972 LK 4 1976 OA 4 1980 BP 4 1984

KE 5 1968 NC 5 1972 LL 5 1976 OB 5 1980 BQ 5 1984

KF 6 1968 NE 6 1972 LM 6 1976 OC 6 1980 BR 6 1984

YG 7 1968 HK 7 1972 PE 7 1976 UV 7 1980 HW 7 1984

YH 8 1968 HL 8 1972 PF 8 1976 UW 8 1980 HX 8 1984

YJ 9 1968 HM 9 1972 PG 9 1976 UX 9 1980 HY 9 1984

OU 10 1968 RA 10 1972 DA 10 1976 QD 10 1980 FM 10 1984

OV 11 1968 RB 11 1972 DB 11 1976 QE 11 1980 FN 11 1984

OW 12 1968 RC 12 1972 DC 12 1976 QF 12 1980 FO 12 1984

FE 1 1969 MJ 1 1973 NG 1 1977 CX 1 1981 Unused codes

FF 2 1969 MK 2 1973 NH 2 1977 CY 2 1981 GD GE GF

FG 3 1969 ML 3 1973 NI 3 1977 CZ 3 1981 JR JS JT

RK 4 1969 VG 4 1973 BX 4 1977 ZG 4 1981 KO KP KQ

RL 5 1969 VH 5 1973 BY 5 1977 ZH 5 1981 LA LB LC

RM 6 1969 VJ 6 1973 BZ 6 1977 ZI 6 1981 MG MH MI

SM 7 1969 TN 7 1973 MM 7 1977 JU 7 1981 PX PY PZ

SN 8 1969 TO 8 1973 MN 8 1977 JV 8 1981 WR WS WT

SO 9 1969 TP 9 1973 MO 9 1977 JW 9 1981 ZO ZP ZQ

GG 10 1969 GU 10 1973 IR 10 1977 VQ 10 1981

GH 11 1969 GV 11 1973 IS 11 1977 VR 11 1981

GJ 12 1969 GW 12 1973 IT 12 1977 VS 12 1981

ZA 1 1970 CA 1 1974 KA 1 1978 NM 1 1982

ZB 2 1970 CB 2 1974 KB 2 1978 NN 2 1982

ZC 3 1970 CC 3 1974 KC 3 1978 NO 3 1982

QX 4 1970 FW 4 1974 WL 4 1978 UG 4 1982

QY 5 1970 FX 5 1974 WM 5 1978 UH 5 1982

QZ 6 1970 FY 6 1974 WN 6 1978 UJ 6 1982

DG 7 1970 XQ 7 1974 RG 7 1978 IG 7 1982

DH 8 1970 XR 8 1974 RH 8 1978 IH 8 1982

DJ 9 1970 XS 9 1974 RI 9 1978 IJ 9 1982

NR 10 1970 UD 10 1974 TK 10 1978 MA 10 1982

NS 11 1970 UE 11 1974 TL 11 1978 MB 11 1982

NT 12 1970 UF 12 1974 TM 12 1978 MC 12 1982