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What was the correct DC ohms of a good coil on these??
I have been told 900 ohms 1000 ohms 1500 ohms
I have one from a Philco Model 17 and the coil checks out good at 670 DC ohms.
one from a Model 16 125-126 45-2028 OPEN COIL
one from a Model 650 45-2086 OPEN COIL
All the links I find leaves it up in the Air. Nothing as to what Philco intended them to be in DC ohms
Any Help appreciated
Bob T
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City: Jackson, NJ
1. 1000 feet of #40 gauge enameled copper wire will be needed to rewind the coil in the Shadow Meter assembly. It just so happens that #40 gauge wire has a resistance of about 1.1 ohms per foot. So in a typical radio, a current draw of 10ma. will give the 10 volt drop across the coil that it takes to operate the shadow vane correctly.
(calculates at 1,100 Ohms)
http://www.philcorepairbench.com/tips/svctip01.htm
People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
Posts: 110
Threads: 26
Joined: Nov 2005
City: Wilmington
State, Province, Country: NC
Yes Thank You
I did find an original that measured 960 ohms, so that is close enough.
Bob T
Posts: 110
Threads: 26
Joined: Nov 2005
City: Wilmington
State, Province, Country: NC
Found another P/N 6497 Original from early 16B
Coil measures 848 DC Ohms
Functions well, not tried in Radio.
Bob T
Posts: 15,286
Threads: 531
Joined: Oct 2011
City: Jackson, NJ
As long as it functions well, plus minus 20% or so does not matter. It is a DC magnet, they are way simpler and not critical to things like a turn short.
People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
