▼ Menu

Y63

Sensibly equivalent to:
63ME 6H5 CV1103 NR69 VI103 Y64
See also:
Tuning Indicators - CV1103 short entry
    
Extras ▼

 

The Y63 'magic eye' tuning indicator is housed in a classic shaped envelope with the electrodes held in a glass pinch. The leads from the pinch are connected to pins in the International Octal base. The triode section is clearly visible in the main picture and requires a grid voltage change of 22 volts for maximum visual change. The display is green.
The 6G5 = 6U5 is electrically identical but fitted with a UX6 base.
This is a second generation indicator with a 6.3 volt heater. This type of indicator was used in many radios. This particular exhibit has been masked at the top to enhance visual contrast. It has also suffered a failure of the envelope to base seal and has been repaired with tape.
The classic envelope is 40 mm in diameter and, excluding the IO base pins, is 93 mm tall.
References: Datasheet, 3002, 1043 & 1040. Type Y63 was first introduced in 1937.

 

Pin Connections
IO
1
2
3
4
5
6
7
8
-
h
a
t
g1
-
h
k

 

Absolute Maximum Operating Conditions
CRT
Vh
Ah
Va
mAa
6.3
0.3
200
4.5
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated April 04, 2015.
Return to Main Index