[Hallicrafters] Pilot Lamps

[Kenneth D. Grimm, K4XL]

Hi Rich,

You are right about the Chicago 1891 being a 500 hour bulb.  My problem
is that all of my local Radio-TV distributors have closed down and I'm
at the mercy of Radio Shack for quick replacements.  They show their
1891, and several others too, as having a life expectancy of 30 hours.

I took Ron Kolarik's advice and looked in my local auto parts store and
found lots of 1891s, but no 1892s.  I did notice that they had an 1893
with which I wasn't familiar.  Now that I'm back in the shack and have
access to the catalogs, I discover that it's a 14 volt bulb with the
same brightness of an 1891, a little more current, and a life expectancy
of 7,500 hours.  Even if this baby becomes fragile after a thousand or
so hours I think I'll try some in the gear that I never open except to
change out a dead pilot light!  8*)

73,
Ken K4XL
k4xl at arrl.net
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----- Original Message -----
From: "Rich Oliver" <Rich.Oliver at lowell.edu>
To: "Kenneth D. Grimm, K4XL" <K4XL at arrl.net>
Cc: "Gary Franklin" <franklin6209 at chartermi.net>; "Hallicrafters"
<hallicrafters at mailman.qth.net>
Sent: Tuesday, April 16, 2002 10:44 AM
Subject: Re: [Hallicrafters] Pilot Lamps


> Ken et al,
>
> The 1891 is rated for 14.0 Volts at 240 ma for 500 hours; the 1892 is
> 14.4 Volts at 120 ma for 1000 hours.  I tried switching to long life
> bulbs (756's, as I recall) in my TR-7 and found that they do indeed
last
> a long time if left alone, but they become very fragile and the
> filaments break from the slightest shock.  That means you have to
change
> the bulb every time you take the covers off or even just move the rig,
> so I switched back.  Now I'm thinking of switching to LED's.
>
> 73, Rich, KC9GQ