▼ Menu

MS4

 
See also:
M-OV's Screened Grid Valves - Marconi MS4 Advert - CV1164 short entry
    
Extras ▼

 

The MS4 from M-OV is described as a general purpose screened-grid valve for use in RF amplification in receivers. The valve was available in both clear and metallised finishes.
This exhibit is or later manufacture than MS4 as can be seen from the top cap connection. The 'tp hat' style replaced the screw cap arrangement.
The MS4B is a 'maximum gain' improvement and dates from the early 1930's.
The wire mesh is the screening grid (g2) and the anode consists of two small flat plates.
The classic envelope is - mm in diameter, and excluding the B5 base pins is - mm tall.
References: 1005 Type MS4 was first introduced in 1929.

 

Pin Connections
B5
1
2
3
4
5
tc
g2
g1
h
h
k
a

 

Absolute Maximum Operating Conditions
Tetrode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
μ
4.0
1.0
200
60
-1.5
2.4
0.3
0.9M
1.9
1,700
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated April 04, 2015.
Return to Main Index