It's 28 Volts AC.
Use bulb type 1819 (28V, 40mA) instead of 1820. They are readily available
and are the original mfgrs. spec. Don't know
where you got the 1820 bulb from, but my Telex HAM IV specs a 1819, of which
I have a box of 10 Sylvania
bulbs as my spares.
73,
Bill, N3RR
----- Original Message -----
From: Bill Aycock <baycock@HIWAAY.NET>
To: Tower Talk <towertalk@contesting.com>
Sent: Tuesday, May 01, 2001 10:49 PM
Subject: [TowerTalk] bulb in rotor control?
> I have an older CDE rotor, the "HAM III", and the dial light has just gone
> out. The bulb type is "s 1820", a bayonet type. None of my catalogs list
> this type, although they list others with numbers near that. The voltage
at
> the socket is about 28 volts, and the only similar bulbs I have found are
> for 24 volts. I dont fully trust the 'no-load' reading to be safe.
> Query- does anyone know of a direct substitute that is more readily
> available? RS maybe? Or- does anyone have a listing of this bulb that
shows
> its rated voltage?
>
> THanks- Bill-W4BSG
> -
> Bill Aycock --- Persimmon Hill
> Woodville, Alabama, US 35776
> (in the N.E. corner of the State)
> W4BSG -- Grid EM64vr
> baycock@HiWAAY.net
> w4bsg@arrl.net
>
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