Aligning the 40-190 - Printable Version

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Aligning the 40-190 - jmac3ky - 03-09-2013

Hi Philconians,

I am wanting to align my beautiful Philco 40-190. It plays and I have a good signal generator (probably 1970s model). My problem is determining where to hook up the signal output. I have the schematic and Riders alignment instructions but they are unclear. Adjusting the I.F.s went fine and the instructions say hook to No. 1 on Loop Panel. (I used a .1 capacitor.) That worked great.

From there on it simply says for Output Connections: Use Loop on Generator. I read the part about making a wire loop in the generator output lead, but it doesn't say where to attach it for the next five adjustments, including SW. Anybody have a handle on correct placement of the lead?

Your advice will be appreciated. Thanks.

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RE: Aligning the 40-190 - codefox1 - 03-09-2013

Some info here:

http://www.nostalgiaair.org/PagesByModel/339/M0013339.pdf

My dummy coil is around 40 turns of magnet wire from discarded transformer wound on a paper towel cardboard .

You might also want to invest in an inexpensive modern digital frequency meter to check the accuracy of your vintage signal generator after letting it settle in for a half hour. Turn the modultion off while doing the check.

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RE: Aligning the 40-190 - jmac3ky - 03-10-2013

I located the answer. All is well. Thanks.

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