|
| Radio Record DM300
new version |
|
 |
 |
|
DM300 old |
DM300 new |
Tetrode
Introduced in 1927
| |
1 |
2 |
3 |
4 |
sc |
base |
| old |
a |
f |
f |
g2 |
g1 |
B4+sc |
| new* |
a |
f |
f |
g1 |
g2 |
B4+sc |
*) made after WWII (1952?)
|
|
Vf |
Af |
Va |
Vg |
mAa |
Ra |
g |
gm |
|
old |
3.5 |
0.1 |
10-30 |
-1.5 |
3.5 |
4,400 |
4.5 |
0.7 |
| new |
4 |
0.09 |
|
|
|
|
|
|
| Equivalent (old version) |
A441, 410DG, BG4, DG407, DX406, DZ1, MX40,
PM4DG, R43, RE074D, RO4141, TA41, TMBG, U409D |
|
