The 1819 shows as having a life of 2500 hours and produces .34
MSCP of light (candle power of some sort). The 1820 shows a life
of 1000 hours but produces 1.6 MSCP so it's about 3 times brighter.
There is also a 757 with a current of .08 and a light output
of .62 MSCP but a rated life of 7500 hours. I might check that
one out sometime. All cost about 80 cents each at Mouser.
Frank
W2FCA
>--- Original Message ---
>From: Bill Aycock <baycock@HIWAAY.NET>
>To: "Tower Talk" <towertalk@contesting.com>
To: <towertalk@contesting.com>
>Date: 5/1/01 8:56:58 PM
>
>I got lots of answers, fast, and I want to thank all who were
so helpful.
>The answers did have what I needed, but raised some other questions.-
I
>will try to answer.
>1. the diagram for a HAM iv shows the number as 1819. Where
did I get
>'1820'? - My diagram simply says 'bulb', and the bulb and two
fuses are
>lumped in a replacement package. No ID there. I got the '1820'
the
>simplest way- off the burned-out bulb.
>2. the (probably correct) type 1819 draws 0.04 Amp- the 1820
draws 0.1 Amp.
> I do not know the difference in Lumens. I wonder if that is
why it burned
>out?
>3. there are several sources at a cost of $.55- RS has them
listed for
>$1.19- In other words, if RS does not have them locally, I guess
I will pay
>the shipping, which will be much more than the double price
from RS.
>
>Much thanks to all
>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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