Gary/Jeff,

Thanks for answers.
I'm replacing the light bulbs with led's but I needed a starting point.
Have a nice day

73's, Evert PA2KW


-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On Behalf Of Garey Barrell
Sent: Friday, September 19, 2008 04:35
To: Drakelist
Subject: Re: [Drakelist] Light bulbs

Jeff -

The Meter illumination bulbs are actually 5V, #1850. The #47 would work 
there I suppose, but I don't see how the #47 would work for the 
indicator lamps. They are powered from the 28V AC winding on the 
filament transformer via a 150 ohm 1W resistor (R27). At 150 mA, they 
would be leaving over 3W in the 150 ohm resistor.? I don't have an L-7, 
but it uses the same transformer and relay as the L-4B, which has a 
30VDC supply.

Evan is the L-7 expert, perhaps he will see this and comment.

73, Garey - K4OAH
Glen Allen, VA

Drake 2-B, 4-B, C-Line & TR-4/C Service Supplement CDs
<www.k4oah.com>



jeff austin wrote:
> Good day
> The bulbs in the L7 are 6.3v 150ma, available from radio shack, part nr
> 272-1110a item nr 47, rgds
> Jeff/9y4ja
>
> --- On *Thu, 9/18/08, Evert Bakker (PA2KW) /<[EMAIL PROTECTED]>/* wrote:
>
>     From: Evert Bakker (PA2KW) <[EMAIL PROTECTED]>
>     Subject: [Drakelist] Light bulbs
>     To: [email protected]
>     Date: Thursday, September 18, 2008, 2:37 PM
>
>     Is there anyone out there who knows what voltage the indicator
>     light are of the L7?
>
>     It's not mentioned in the drawings and I've dismantled my L7 for
>     total revision.
>
>     Thanks in advance.
>
>     73's, Evert PA2KW
>
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>     Drakelist mailing list
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>
>
>

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