AN/GRR5 query
 

How is the dial reading displayed on this radio?

Most photos don't show this feature very clearly.

Pete

Its more or less pretty standard. There's a calibrated dial behind the
panel (upper left side). A rotating mask mask reveals the band in use.
There's a dial light that sort of works but the bulb is all but unheard
of (or at least I can't find any!). I used a RatShak 1.5v lamp. That
huge dial-like item in the middle is used for mechanical pre-sets for
tuning. BTW, if you obtain one of these receivers, you'll invariably
need to change out the old metallic rectifier stack in the HV/AC
portion of the PS and the 2 selinium rectifiers used in the filamant
circuit. Regards de K3HVG

Uncle Peter wrote:

How is the dial reading displayed on this radio?

Most photos don't show this feature very clearly.

Pete

That's a good description. I also posted a closeup photo in the
alt.binaries.pictures.radio newsgroup.

need to change out the old metallic rectifier stack in the HV/AC
portion of the PS and the 2 selinium rectifiers used in the filamant

My AN/GRR-5 ( http://antiqueradio.org/angrr-5.htm ) works, but I should
replace those rectifiers, I suppose. Did you use something like a 1N4007
diode? Haven't looked at the schematic in ages.

Regards,

Phil Nelson
Phil's Old Radios
http://antiqueradio.org/index.html

Yep, a bridge of 1N1007's did the trick, in both locations. Turn down the
filamant pot, first, then power-up and re-adjust with the filament voltage
to the required 1.4 volts. Before replacing the diodes, the best I could
get was about 1.2 volts.

Phil Nelson wrote:

That's a good description. I also posted a closeup photo in the
alt.binaries.pictures.radio newsgroup.

need to change out the old metallic rectifier stack in the HV/AC
portion of the PS and the 2 selinium rectifiers used in the filamant

My AN/GRR-5 ( http://antiqueradio.org/angrr-5.htm ) works, but I should
replace those rectifiers, I suppose. Did you use something like a 1N4007
diode? Haven't looked at the schematic in ages.

Regards,

Phil Nelson
Phil's Old Radios
http://antiqueradio.org/index.html