[Radioroslyn]

L= inductance C=capacitance and F= frequency. 470kc is the IF frequency for this set.

[mikethedruid]

Yes, there IS a meter for that. This one can be used to measure cpacitance, inductance, and resistance.
https://www.ebay.com/itm/LCD-1999-BM4070...SwvMVcdNWj
hope this helps.

[mikethedruid]

Also, as Mike (Morzh) said, to be successful in this hobby one really needs to acquire a good understanding of basic electronics. I strongly suggest the book Audel's Radioman's Guide. It can be had reasonably from Amazon. Any of the older (pre 1960) editions are good for what we need for this hobby.
https://www.amazon.com/Audels-New-Radiom...way&sr=8-5

[Ron Ramirez]

Mike the Druid

Thanks for that link to the LCR meter! I think I should pick one of those up. It might serve me well for those pesky Philco coils. Edit: Ordered.

[morzh]

https://www.ebay.com/itm/Stanford-Resear...ctupt=true

I have this.
Got it for free.

[Stonewall]

If you only broke off one of the leads to the coil, it is quite possible to very carefully, with a good magnifying device, find the broken end of the wire in the coil. I've done it before using a jeweler's loupe and a dental probe. Then you may be able to unwind just enough of the wire to reach a connection point or connect to a new lead. Twist the tiny wire around the connection point and heat with a very hot soldering iron, then apply solder. If the soldering iron is sufficiently hot, it will melt off the insulation; trying to scrape it off is very difficult. If you only unwind an inch or two, the change in inductance and resistance will not be problematic.

[rfeenstra]

I ordered one too!

[Jake Blake]

Thanks for this advice....  I bought new prescription eyeglasses after I made my boo-boo.  I'll get a magnifying glass also.

[Jake Blake]

Somehow, I did not realize there were hand-held meters out there that measure inductance..... That is VERY tempting, more-so for my loudspeaker work .   I  believe I'll get that.  Thanks

[Jake Blake]

Incidentally Stonewall ,
. . . . the insulation on that tiny wire is fiberous, . . . not rubber or any kind of plastic. It was this fiberous stuff that made me think I was just picking out a piece of lint or debris out of the chassis. I couldn't see it well-enough to realize it was a conductor with cloth insulation. Thanks again for your magnifying glass suggestion.

Jake

[Radioroslyn]

Typically it would be silk or cotton.

[morzh]

All natural

[Jake Blake]

Yes, there IS a meter for that. This one can be used to measure cpacitance, inductance, and resistance.
https://www.ebay.com/itm/LCD-1999-BM4070...SwvMVcdNWj
hope this helps.

I got the meter.  Thanks again Mike! 
Neat little thing...it's already told me one of my coils I have in my speaker crossover stash is worthless.  

[morzh]

It's just trying to make you toss all your coils and buy new one made in China. Cause it itself is made in China.

[Jake Blake]

It's just trying to make you toss all your coils and buy new one made in China. Cause it itself is made in China.

Oddly-enough, that is not true for these specific coils....these were probably wound right at the location
where I bought them from : Highland Heights, Ohio.  This one , I thought, was around .5mH,  but turned out to be .28 mH. ( I say 'thought' because I've removed wire from it in a guessing game). This resulting value would only be good for a crossover point of about 5kHz , . . . too high for my preference.

But your point is well-taken.  :-)  I know a few capitalists that are not beyond such things.

Surely, you're not suggesting these little cardboardy ones in the radios were  made in China in 1939 either.   

The new  IF transformer  I bought as a possible replacement has an fragrance of Moo Goo Gai Pan, and measures  8.22 mH for the primary, and .185 mH for the secondary.... sure hope that secondary is high enough.  It's tiny.