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Old 12-27-2013, 10:46 AM
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rickfray rickfray is offline
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Predicta Holiday Network K3(N5)

I am rebuilding my Predicta Holiday networks and am confused on one symbol on N5 (K3) (part # 30-6030-7). The C2 (.004)/R3 (90k) combination that goes to leads #2 & 3 is one I've never seen before in what looks like the resistor with half of cap C2 next to it. What does that mean, just connect them in parallel? Thanks

Rick
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Old 12-27-2013, 12:14 PM
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Phil Nelson Phil Nelson is offline
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You can replace that "combo" component with a 90K resistor and two .002 caps connected from each end of the resistor to ground. You can also construct that resistor/cap component using two resistors and three caps, as described in "Replacing the Vertical Stage Couplates" in the following article:

http://antiqueradio.org/PhilcoH3412L...Television.htm

Either way seems to work fine.

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http://antiqueradio.org/index.html

Last edited by Phil Nelson; 12-27-2013 at 05:40 PM.
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Old 12-27-2013, 03:38 PM
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Predicta Holiday Network K3(N5)

OK Phil, just to make sure I understand, I can do one of the following two options?



Thanks

Rick
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Old 12-27-2013, 05:37 PM
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Yes. The simpler version uses two .002 caps, one from each end of the 90K resistor to ground. (I edited my previous reply to make it a little more clear.)

Phil Nelson

Last edited by Phil Nelson; 12-27-2013 at 05:41 PM.
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Old 12-27-2013, 06:07 PM
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bandersen bandersen is offline
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Funny you should post this now. I just built some replica networks for a Predicta Tandem last night

I used two 47K and two 0.0012 and a 0.0016. Overkill really though. Next time I'll just use three 0.0015.

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Old 12-28-2013, 07:30 PM
DaveWM DaveWM is offline
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when ever I see your work Bob I feel like such a hack...

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