[Boatanchors] National SW-3 screen resistor

[RJ Mattson]

Hi Al,
I have never seen an original DC SW-3 schematic without a disconnect.
I have a National brochure picture of the DC SW-3 showing the toggle switch.
Vic said he has the front hole.  I think Vic's might have been user enlarged
because he said it doesn't look factory.
Does your DC SW-3 have the chassis stamped with the tubes 236 and 237?
There is evidence that the SW-3 was also manufactured for commercial
applications and this might account for the variations.
These posts have rejuvenated my interest to finish some 40 band-spread coil
sets.
The set is quite a performer on 80m cw.  Even 75m ssb.
When Radio Shack gave customers a free battery each month, I ran it on
battery power. (The wife and kid also had RS battery club cards to help the
cause :-)
bob...w2ami
www.qrz.com/callsign/w2ami


----- Original Message ----- 
From: "Al Klase" <skywaves@webex.net>
To: "Vic Rosenthal" <vic@rakefet.com>
Cc: "RJ Mattson" <rjmattson@hvi.net>; "Boatanchors List"
<boatanchors@mailman.qth.net>
Sent: Wednesday, March 31, 2004 8:39 AM
Subject: Re: [Boatanchors] National SW-3 screen resistor


> Vic Rosenthal wrote:
>
> > RJ Mattson wrote:
> >> The DC SW-3 has a toggle switch in the front  lower right hand
> >> corner to disconnect the B- of the batteries.
>
> I also have a DC SW-3.  No toggle switch.
>
> Al
>
> -- 
> Al Klase - N3FRQ
> skywaves@webex.net
> Flemington, NJ 08822
> Web Page:  http://www.webex.net/~skywaves/home.htm
>