[Hammarlund] Sp-600 rewired for product detector

[Al Parker]

Hi Smith,
    That's a beautiful job you did.  If you'd used black instead of blue 
spaghetti it'd be indistinguishable from the factory work.
    I wish I had remembered the AB7YD s-meter ckt while I was doing an 
SP-600 recently.  I'll try to keep it in mind for future work.
73,
Al, W8UT
New Bern, NC
www.boatanchors.org
www.hammarlund.info

----- Original Message ----- 
From: "stbradford" <stbradford at insightbb.com>
To: <hammarlund at mailman.qth.net>
Sent: Sunday, March 30, 2008 10:22 PM
Subject: [Hammarlund] Sp-600 rewired for product detector


>   Hello group,
>
> I have finished the rewiring of the SP-600 for the product detector 
> circuit as found on the Hammarlund service page. See 
> http://www.hammarlund.info/SP600mods.htm
>
> The article is well written by AB7YD and the installation went as 
> described. I haven't made the meter scale change yet, saving that for a 
> rainy day.
>
> I used a small 12 vdc dpdt relay from Radio Shack I placed it on the 
> underside of the chassis with a small amount of two part epoxy.
>
> The completed circuit changes can be seen at 
> http://w9hak.home.insightbb.com/
>
> Smith Bradford
> W9HAK