Dan wrote:

In article ,
"Mark S. Holden" wrote:

Have you considered white LED's?

If you're concerned about keeping it original for collector purposes
it's a bad idea, but they'll last a very long time.

No, I hadn't thought of that. I'm not really concerned about keeping
it "original". I'd rather have it working!

I'll look into LEDs. Thanks for the suggestion.

Dan

Remember that you will have to add a series resistor to limit the
current in each LED, otherwise they won't last long. Use Ohms law to
calculate the resistor value based on the source voltage and the
voltage/current ratings of the LED. I replaced the fifty-six (no typo!)
green LED's in my R8B display with just four bright white ones. The
display now looks blue-green with white charecters. The R8 was designed
before there were bright LED's, so Drake had to use an array of many
dozens of less bright ones to backlight the LCD display.


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In article , starman
wrote:

Remember that you will have to add a series resistor to limit the
current in each LED, otherwise they won't last long. Use Ohms law to
calculate the resistor value based on the source voltage and the
voltage/current ratings of the LED. I replaced the fifty-six (no typo!)
green LED's in my R8B display with just four bright white ones. The
display now looks blue-green with white charecters. The R8 was designed
before there were bright LED's, so Drake had to use an array of many
dozens of less bright ones to backlight the LCD display.

I *think* I might have found some original lamps for a decent price. I
have emailed them, and will report my findings.

Dan

Drake R8, Radio Shack DX-440,
Grundig S650, S700, S800, YB400
Tecsun PL-230 (YB550PE), Kaito KA1102
Hallicraters S-120 (1962)
Zenith black dial 5 tube Tombstone (1937)
E. H. Scott 23 tube Imperial Allwave in Tasman cabinet (1936)

On Sun, 11 Apr 2004 23:11:21 -0400, Dan wrote:

In article , starman
wrote:

Remember that you will have to add a series resistor to limit the
current in each LED, otherwise they won't last long. Use Ohms law to
calculate the resistor value based on the source voltage and the
voltage/current ratings of the LED. I replaced the fifty-six (no typo!)
green LED's in my R8B display with just four bright white ones. The
display now looks blue-green with white charecters. The R8 was designed
before there were bright LED's, so Drake had to use an array of many
dozens of less bright ones to backlight the LCD display.

I *think* I might have found some original lamps for a decent price. I
have emailed them, and will report my findings.

Dan

Drake R8, Radio Shack DX-440,
Grundig S650, S700, S800, YB400
Tecsun PL-230 (YB550PE), Kaito KA1102
Hallicraters S-120 (1962)
Zenith black dial 5 tube Tombstone (1937)
E. H. Scott 23 tube Imperial Allwave in Tasman cabinet (1936)

You can purchase replacement bulbs at:

BulbDirect.com

Part Number: 0084-WI

Description:

84 01-I2 EIKO 6.3v .04A

I've put them in. They work. $.85 a piece

In article ,
T Breslin wrote:


You can purchase replacement bulbs at:

BulbDirect.com

Part Number: 0084-WI

Description:

84 01-I2 EIKO 6.3v .04A

I've put them in. They work. $.85 a piece

Are you sure of those numbers? None of these numbers appear in their
lists. I searched on 0084-WI, 84 01-I2, EIKO, etc.

Thanks

Dan

Drake R8, Radio Shack DX-440,
Grundig S650, S700, S800, YB400
Tecsun PL-230 (YB550PE), Kaito KA1102
Hallicraters S-120 (1962)
Zenith black dial 5 tube Tombstone (1937)
E. H. Scott 23 tube Imperial Allwave in Tasman cabinet (1936)

On Mon, 12 Apr 2004 08:15:27 -0400, Dan wrote:

In article ,
T Breslin wrote:


You can purchase replacement bulbs at:

BulbDirect.com

Part Number: 0084-WI

Description:

84 01-I2 EIKO 6.3v .04A

I've put them in. They work. $.85 a piece

Are you sure of those numbers? None of these numbers appear in their
lists. I searched on 0084-WI, 84 01-I2, EIKO, etc.

Thanks

Dan

Drake R8, Radio Shack DX-440,
Grundig S650, S700, S800, YB400
Tecsun PL-230 (YB550PE), Kaito KA1102
Hallicraters S-120 (1962)
Zenith black dial 5 tube Tombstone (1937)
E. H. Scott 23 tube Imperial Allwave in Tasman cabinet (1936)

-------------------------

http://www.miniaturelamps.com/en-us/dept_26.html

Look for BULB LAMP P/N "84"

Looks the same.

On Mon, 12 Apr 2004 08:15:27 -0400, Dan wrote:

In article ,
T Breslin wrote:


You can purchase replacement bulbs at:

BulbDirect.com

Part Number: 0084-WI

Description:

84 01-I2 EIKO 6.3v .04A

I've put them in. They work. $.85 a piece

Are you sure of those numbers? None of these numbers appear in their
lists. I searched on 0084-WI, 84 01-I2, EIKO, etc.

Thanks

Dan

Drake R8, Radio Shack DX-440,
Grundig S650, S700, S800, YB400
Tecsun PL-230 (YB550PE), Kaito KA1102
Hallicraters S-120 (1962)
Zenith black dial 5 tube Tombstone (1937)
E. H. Scott 23 tube Imperial Allwave in Tasman cabinet (1936)


Looks like bulbdirect may has changed their site. Can't find Eiko
lamps there using search. I'm looking at my receipt so I know I
purchased them there. Anyway, the manufacturer site is:

http://www.eiko-ltd.com/eiko/item.asp?qid=166&lid=84

That's th actual bulb on that page. It fits. You can probably find
it at Mouser or DigiKey.

Hope that helps. I'll keep looking and post if I find it. Regards

In article ,
T Breslin wrote:

Looks like bulbdirect may has changed their site. Can't find Eiko
lamps there using search. I'm looking at my receipt so I know I
purchased them there. Anyway, the manufacturer site is:

http://www.eiko-ltd.com/eiko/item.asp?qid=166&lid=84

That's th actual bulb on that page. It fits. You can probably find
it at Mouser or DigiKey.

Hope that helps. I'll keep looking and post if I find it. Regards

Yeah, that number is valid. A search turns up Atlanta Light Bulbs as
having them for $1 each, unfortunately they have a $35 minimum order.
I'm going to try the local "Bulb Depot" here in town, I just assumed
they wouldn't have it.

If that fails, I have confirmed via email that MTS in Texas has the
original OSRAM bulbs for $2 each, with a $15 minimum. I think they also
have the *other* bulb (for the preselector dial) that is a higher
wattage bulb. They have the OSRAM 2306 and the 2321. They are at:

http://www.mtsmicroscopes.com/

Click on the Bulbs link.

Dan

Drake R8, Radio Shack DX-440,
Grundig S650, S700, S800, YB400
Tecsun PL-230 (YB550PE), Kaito KA1102
Hallicraters S-120 (1962)
Zenith black dial 5 tube Tombstone (1937)
E. H. Scott 23 tube Imperial Allwave in Tasman cabinet (1936)