Fw: SB-104 Question - ALC Mod

[Kees & Sandy]

Hi Mark,

I have a factory upgraded board and it's a .68mfd tantalum cap.
The board artwork says 5mfd. On other machines I replaced them
with 1mfd tantalums because that's what I had. Looks like the
change was to make the ALC a little more responsive.

73s  Kees K5BCQ
Radio Repair Homepage  http://www.qsl.net/k5bcq/



----- Original Message -----
From: Mark Johnson/Ontario/IBM <mjohnson at CA.IBM.COM>
To: <HEATH at LISTSERV.TEMPE.GOV>
Sent: Sunday, November 11, 2001 11:18 AM
Subject: SB-104 Question - ALC Mod


> I've been converting an SB-104 by installing all of the factory  upgrades
> as per the list of Heath Bulletins. One bulletin dated April 21, 1978 has
> you change C-827 on the ALC/Filter Board (K) to .68mfd from the 5 mfd
> installed on the board...This seems like quite a change in capacitance. Am
> I reading this right and is this change a good one to do??
>
> As I've previously said, I have installed all other mods as per these
> bulletins, but this one has me thinking twice..Thought I'd ask the
> experts..
>
> Many Thanks!!
>
> Mark V. Johnson
> VE3DJU/VE3DDI
>
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