[Milsurplus] Dial Light for GRC-9 Receiver

[Richard Brunner]

Another option:  There is available a small LED which works very well on 
1.5 volts, identified as "222 E10 base 1.5-3 volt LED." It's a screw 
base.  It starts giving light at 0.5 volt, good output at 1.0 volt, 
plenty more at 1.5 volts, and runs very well on the 1.5 volt filament 
line.  Leave the original lamp socket in place, but remove the bulb so 
it doesn't shadow the dial.  Run the leads through the hole in the 
chassis that the original lamp lead runs through, and solder to the 
filament line.  Position the lamp to illuminate the three bands on the 
dial, and hold as you wish. Mine is merely held with tape, and seems 
satisfactory.

There are some miniature electronics in the base, and wrapping an 
antenna lead around the lamp I heard very weak harmonics every 18 Kc, 
but installed in the receiver nothing is heard.

Richard, AA1P