江建衡 在 2004-11-9 20:23:51 发表的内容
江建衡 在 2004-11-8 8:27:00 发表的内容
新买的NOS管Telefunken ECF82已经收到。瓶身上的暗码是B6205309，请DX们帮我看看，这是什么时候出产的管子，谢谢。 |
可能DX们看不到照片无法发表高见,现把照片传上来.与盒子拍在一起的是新买的NOS管,单独拍的是现在使用的二手管.我自己瞎猜,62代表1962年.二手管的暗码是60开头,大概是指1960年出品的.当否? |
看看这篇关于TFK管子Date Code的介绍吧
Telefunken Tube Date Codes
Source Material from Eric Barbour
Originally presented in "Tube Collector" Vol.2 No.4 This list shows date codes covering Telefunken tube production between 1930 and 1968. This chart had originally come from a tube enthusiast in Europe; the German- titled chart had been retitled in English. Setting-up the original information in straight "decode" format, we get the table below. Some of the identifications are unclear, what with smudging of the original, and are marked. A few dates are missing. The code uses pairs of lower-case letters a-z (less j), plus (to a limited degree) ? ? and ? As a special case, for postwar Berlin-produced tubes (Berliner R鰄re), the upper-case letters A and B are added. A great many letter combinations are not used. The code was random in some years. Later, the three months of a given quarter share a common first letter, and the second letters are normally in ascending order. Thus the months of 1955 are coded aq, as, at; ba, bc, bf; ca, cc, cd; db, dc, dh. However, the letter sequence was sometimes reversed, so that for 1944 the months ran ka, na, la; fk, bk, ck; ad, gd, rd; fv, mv, uv. The months May-December, 1945, all lack codes, a sign of the then-times, and a hint that this code gives month of manufacture, not of warranty expiration.
I wish to thank Eric Barbour and The Tube Collector for this data. This is presented free of charge, and free of any commercial endorsement or purchase obligations, intended for use by individual or clubs of vacuum tube collectors to aid in the identification of Telefunken date codes. With this in mind, Brent Jessee Recording makes no claim as to the final accuracy or completeness of this list, and is not responsible for any circumstances or losses (whether commercial or private) arising from the use of this list. Presented "as is" and "as found".
A
滗 11-43
鋋 9-67
鋕 4-43
鋤 6-43
aa 6-35?
aA 1-46
aB 2-46
ab 4-31
ac 1-49
ad 7-44
ae 4-32
af 2-49
ag 5-32
ah 7-47
ai 5-31?
ak 6-32
al 5-35
am 4-36
an 4-35?
ao 3-49
ap 1-45
aq 1-55
ar 1-39
as 2-55
at 3-55
au 6-31?
av 4-61
aw 5-61
ax 6-61
ay 7-67
az 8-67 B
ba 4-55
bb 10-67
bc 5-55
bd 10-46
be 10-52
bf 6-55
bg 7-61
bh 8-61
bi 9-61
bk 5-44
bl 11-67
bm 12-67
br 5-41
bt 11-52
by 12-52
C
ca 7-55
cb 10-49
cc 8-55
cd 9-55
ce 9-33
cf 1-30
cg 1-36
ch 12-49
ci 10-61
ck 6-44
cl 11-49
cm 11-61
cn 12-61
co 7-33
cp 2-30
cq 1-68
cr 5-46
cs 8-33
ct 2-41
cu 2-68
cv 3-68
cw 3-30
cy 10-40
cz 4-41
D
da 2-31
db 10-55
dc 11-55
dd 1-62
de 7-30?
df 2-36
dg 9-30
dh 12-55
di 2-62
dk 4-38
dl 3-62
dm 1-31
dn 3-31
do 4-68
dp 5-58?
dq 5-68
dr 9-39
dt 7-36
du 6-30?
dw 8-47 E
ea 1-56
eb 10-53
ec 2-56
ed 3-56
ee 4-61
ee 4-62
ef 5-62
eg 6-62
eh 8-58?
ei 2-34
ek 11-30
el 10-36
em 11-53
en 1-34
e?3-34
eo 8-68?
ep 2-45
eq 9-58
er 10-30
es 12-30
et 9-47
ez 12-53
F
fa 1-53
fb 4-56
fc 1-54
fd 5-56
fe 6-56
ff 8-46
fg 7-62
fh 3-40
fi 8-62
fk 4-44
fl 9-62
fm 2-53
fn 10-68
fo 2-39
fp 2-54
fq 11-68
fr 12-68
fu 7-42
fv 10-44
fw 3-54
fx 3-53
fy 2-42
fz 9-41
G
ga 4-50
gb 10-51
gc 7-56
gd 8-44
ge 8-56
gf 9-56
gg 10-62
gh 11-62?
gi 12-62
gm 5-50
go 10-47
gr 6-50
gt 4-45
gu 1-38
gy 12-51
gz 11-51
H
ha 10-56
hb 11-56
hc 7-50
hd 10-33
he 11-33
hf 7-46
hg 10-38
hh 12-56
hi 6-39
hk 8-50
hl 3-63
hm 2-63
hn 3-63?
hr 12-33
hu 9-50
I
ia 7-37
ib 4-33
ic 5-36
id 6-33
ie 1-57
if 4-53
ig 2-57
ih 3-57
ii 5-40
ik 4-37
il 4-63
im 5-53
in 5-33
io 5-61?
io 5-63
ip 4-39
iq 6-63
it 11-47
iu 2-40
iv 6-53
iy 1-43
iz 11-42
K
ka 1-44
kb 1-50
kc 4-54
kd 12-46
ke 2-37
kf 9-40
kg 11-37
kh 2-50
ki 4-57
kk 10-41
kl 12-32?
km 10-42
kn 5-57
ko 11-32
kp 5-54
kq 6-57
kr 4-42
ks 7-63
kt 8-63
ku 10-32
kv 5-39
kw 6-54
kx 9-68?
ky 3-50
kz 11-40 L
la 3-44
lb 7-57
lc 8-57
ld 9-57
le 2-33
lf 10-63
lg 11-63
lh 12-63
ln 3-33
lr 6-46
lt 1-33l
lx 11-39 M
ma 10-57
mb 11-41
mc 1-51
md 11-57
me 3-32
mf 8-42
mg 4-47
mh 12-57
mi 1-32
mk 4-40
ml 1-64
mm 2-51
mn 2-32
mo 2-64
mp 3-64
mv 11-44
mw 6-38
my 3-51
mz 6-42
N
na 2-44
nb 1-58
nc 2-58
nd 3-36
ne 3-56
nf 4-64
ng 5-64?
nh 5-64
nn 7-39
nr 4-46 O
鰖 5-43
oa 5-30
ob 8-39
oc 4-58
od 5-58
oe 12-34
of 12-47
og 6-58
oh 7-64
oi 1-41
ok 2-38
ol 8-64
om 3-41
on 6-30
oo 12-41
op 9-64
or 11-34
ot 10-34
ou 4-30
P
pa 10-39
pb 7-58
pc 8-58
pd 9-53?
pe 10-64
pf 11-64
pg 5-47
ph 12-64
pn 7-34
po 8-36?
pr 9-34
pt 6-40
Q
qa 10-58
qb 11-58
qc 12-58
qd 1-65
qe 2-65
qf 3-65
ql 3-47
qr 2-47
qz 1-47
R
ra 1-48
rb 1-59
rc 2-59
rd 9-44
re 9-32
rf 9-36
rg 10-50
rh 11-50
ri 8-37
rk 8-41
rl 3-59
rm 4-65
rn 12-50
ro 5-65
rp 3-45
rq 6-65
rr 7-32
rs 8-32
ru 11-38
rw 2-48
rx 3-48
rz 1-42 S
sa 4-52
sb 4-59
sc 5-59
sd 6-59
se 11-35
sf 5-37
sg 5-52
sh 7-65
si 1-40
sk 12-35
sl 9-48
sm 8-48
sn 8-65
so 7-48
sp 10-35
ss 3-37
st 12-38
su 3-38
sy 6-51
T
ta 8-35
tb 8-40
tc 8-31
td 7-53
te 7-31
tf 7-59
tg 6-47
th 8-59
ti 9-59
tk 10-65
tl 6-35
tm 8-53
tn 9-31
to 11-65
tp 12-65
tq 6-41
tr 7-35
tw 9-53
U
黭 3-43
12-43
ua 11-48
ub 10-59
uc 11-59
ud 12-59
ue 1-66
uf 7-52
ug 12-32
uh 11-31
ui 7-43
uk 8-43
ul 9-38?
um 3-42
un 10-48
uo 12-48
up 2-66
uq 3-66
ur 8-52
uv 12-44
uw 9-52
uy 7-41
uz 10-31 V
va 4-49
vb 1-52
vc 7-54
vd 3-40?
ve 1-60
vf 2-60
vg 3-60
vh 6-36
vi 4-66
vk 6-49
vl 5-66
vm 2-52
vn 6-66
vp 8-54
vr 5-49
vs 7-38?
vt 3-52
vw 9-54
vz 11-36
W
wa 9-37
wb 5-38
wc 4-60
wd 5-60
we 12-39
wf 8-38
wg 8-51
wh 7-51
wi 6-37
wk 4-48
wl 6-60
wm 9-51
wn 7-66
wo 12-37
wp 5-48
wq 8-66
wr 9-66
wt 6-48
X
xa 5-34
xb 7-36?
xc 10-54
xd 7-60
xe 4-34
xf 9-46?
xg 8-60?
xh 6-34
xi 9-60
xk 10-66
xl 11-66
xm 12-66
xp 11-54
xr 7-40
xw 12-54
xy 9-42
Y, Z
ya 10-60
yb 11-60
yc 12-60
yd 9-49
ye 2-35
yf 1-67
yg 2-67
yh 3-67
yi 5-42
ym 8-49
yn 3-35
yq 12-40
ys 1-35
yt 7-49
zb 1-61
zc 2-61
ze 3-61
zf 4-67
zm 5-67
zn 6-67
zu 10-43
zw 5-51
zz 12-42