[Hammarlund] SP600 ReCap BBODs

[kirklandb at sympatico.ca]

I found in one series that  the Red/White and Blue wiring from the RF deck
is reversed - both for the RF unit and Crystal unit: don't mix and
match!!

> Date: Thu, 31 Jan 2013 11:28:16 -0800
> From: jamminpower at earthlink.net
> To: hammarlund at mailman.qth.net
> Subject: Re: [Hammarlund] SP600 ReCap BBODs
> 
> Actually, you can sort out the 6 (or 7) wires from the RF deck fairly 
> easily with just an ohmmeter (having discovered this after failing to 
> label them and with the paint on the wires long faded and color-free). I 
> don't bother to label them any more.
> 
> For instance, for the 6-wire RF deck (the most common one), this is the key:
> Blue wire goes right to V3 pin 5
> Yellow-Black goes to pin 3 of V1, V2, V3 and V4 with very low resistance 
> (just a few ohms)
> Green-Red goes to pin 6 of V1 and V2 with about 4400 ohms (varies a bit 
> with model)
> Blue-Red goes to pin 1 of V4 with about 2K ohms
> Red-White goes to pin 6 of V3 through 6800 ohms
> White-Black to pin 1 of V1, V2 through 520K (will probably be higher)
> 
> 
> Enjoy!
> -A
> 
> -- 
> James A. (Andy) Moorer
> www.jamminpower.com
> 
> 
> 
> On 1/29/2013 12:52 PM, Joe Connor wrote:
> > . . .
> >   
> > Another issue is removing the wires that go from the RF deck to the pod on the side of the deck. Originally, those wires were color coded but the colors have probably faded by now so that you can't rely on the color code to know where they go. I found that Testor's model paint came in handy. I would put a dab of different color paint on each one before disassembly and draw a diagram showing which color wire went where. It worked like a charm. Just use colors that are easily distinguishable. The pod has a cover so no one will see any paint on the wires once you get the set reassembled.
> >
> 
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