Re: [amsat-bb] Lights for G5400B control box

[Margaret Leber <maggie@xxxxxxxxxxxx>]

Bruce Nolte N3LSY wrote:
> Karl Sandstrom wrote:
>> Does anyone know of a good replacement for the bulbs in a Yaesu G5400B
>> control box?  These are the lights above the position meter faces.  I 
>> would
>> prefer not to go back to Yaesu, if possible.
> Radio Shack has some 12 volt  "grain of wheat" bulbs, either with a
> clear or a green tint to them, that can be made to work. The clear ones
> will have to use the green tape, while the green ones, which are sold as
> part of a multicolor assortment, will probably be okay as they are.
> Shouldn't cost more than 5 bucks to change 'em all out, even if you have
> to buy more than you need. The store near me does not use the display
> boards anymore for small parts, they put them in  drawer cabinets.


   This comes up every so often.
   Some of the accumulated wisdom of the list follows.


-------- Original Message --------
Date: Wed, 02 Jul 2003 17:35:21 +0000
From: Cliff Buttschardt <cbuttsch@slonet.org>
To: Margaret Leber <maggie@voicenet.com>
Subject: Re: [amsat-bb] Yaesu G-5500 pilot lights?

Good one Maggie.  I just checked my rotor box with a voltmeter with the
idea of putting in LED's.  I measured 14 volts AC at the lamp socket.
Cliff K7RR

Margaret Leber wrote:
 >
 > Alan P. Biddle wrote:
 >
 > > Anyone know what the meter pilot light bulbs are in the controller? 
  The
 > > schematic only calls them out as PL-1 and PL-2.
 >
 > I've been carrying around a note in my PDA for a couple of years now
 > that says
 >
 > "Rotor lamps:  Radio Shack # 272-1092C micro lamps."
 >
 > I know I gleaned this from an AMSAT-BB posting but don't recall if it's
 > a direct replacement or something that "can be made to work".
 >
 > I also recall hearing of folks replacing them with LEDs. Sounds like A
 > Good Thing.
 >
 >   73 de Maggie K3XS
 >
 >
 > -------- Original Message --------
 > From: Alan P. Biddle <APBIDDLE@att.net>
 > To: AMSAT-BB <AMSAT-BB@AMSAT.Org>
 > Subject: RE: [amsat-bb] Yaesu G-5500 pilot lights?
 > Date: Mon, 7 Jul 2003 23:02:36 -0000
 >
 > Maggie,
 >
 >>"Rotor lamps:  Radio Shack # 272-1092C micro lamps."
 >
 > Probably the best "direct" replacement from RS.  They are _almost_ 
perfect.
 > The only minor problem is that they are rated at 12.0 V and 60ma, and the
 > voltage supplied is ~14 V.  A 33 ohm resistor in series works 
perfectly.  A
 > comparison with the working original bulb shows what to the eyeball MK2
 > luminosity meter is exactly the same brightness.
 >
 > Some information for those doing this.  The RS bulb shows a brightness of
 > 0.15MSCP.  In the next bin was a 14 V bulb @ 150 ma which would 
probably be
 > "too bright."  YMMV.  For going the LED route, there is plenty of room on
 > the perf board for just about any LED and resistor to be installed.
 > Something with a brightness of 0.15MSCP would be a good place to start.
 >
 > The original bulb is a long glass tube.  It looks like an NE-2, but is
 > incandescent and has the leads coming out of the opposite ends.  For 
an LED
 > you might want to put two LEDs in series to spread out the source of
 > illumination.
 >
 > Thanks to all who wrote!
 >
 >
 > Alan
 > WA4SCA
 >
 > -------- Original Message --------
 >
 > From: Deon Erwin <zr1dq@qsl.net>
 > To: <APBIDDLE@MAILAPS.ORG>, "AMSAT-BB" <AMSAT-BB@AMSAT.Org>
 > References: <000001c340aa$c6723fa0$1954550c@alanscomputer>
 > Subject: Re: [amsat-bb] Yaesu G-5500 pilot lights?
 > Date: Thu, 3 Jul 2003 12:35:18 +0200
 >
 > Alan
 >
 > I have long since given up replacing dial lamps, instead I use colourless
 > LEDs.
 >
 > High brightness LEDs come in all shapes, sizes and colours and you 
will find
 > a suitable replacement for your dial lamp.  Measure the voltage, 
calculate
 > the correct resistor value and you will have replaced the lamp for 
the last
 > time.
 >
 > Also, LEDs do not generate heat to turn plastic lenses and faceplates
 > yellow.
 >
 > Deon ZR1DQ
 >
 > ----- Original Message -----
 > From: "Alan P. Biddle" <APBIDDLE@att.net>
 > To: "AMSAT-BB" <AMSAT-BB@AMSAT.Org>
 > Sent: Wednesday, July 02, 2003 5:01 PM
 > Subject: [amsat-bb] Yaesu G-5500 pilot lights?
 >
 >
 > Hi,
 >
 > Anyone know what the meter pilot light bulbs are in the controller?  The
 > schematic only calls them out as PL-1 and PL-2.
 >
 >
 > Alan
 > WA4SCA



-- 
-----/___.   _)Margaret Stephanie Leber CCP, SCJP/"The art of progress /
----/(, /|  /| http://voicenet.com/~maggie SCWCD/ is to preserve order/
---/   / | / |  _   _   _    `  _  AOPA 925383/ amid change and to  /
--/ ) /  |/  |_(_(_(_/_(_/__(__(/_      K3XS / preserve change amid/
-/ (_/   '        .-/ .-/        ARRL 39280 /order."-A.N.Whitehead/
/________________(_/_(_/_______AMSAT 32844_/<maggie@voicenet.com>/


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