The PHILCO Phorum
Model 60 Antenna coil repair - Printable Version

+- The PHILCO Phorum (https://philcoradio.com/phorum)
+-- Forum: Philco Radio Discussions (https://philcoradio.com/phorum/forumdisplay.php?fid=5)
+--- Forum: Philco Electronic Restoration (https://philcoradio.com/phorum/forumdisplay.php?fid=8)
+--- Thread: Model 60 Antenna coil repair (/showthread.php?tid=5717)


Model 60 Antenna coil repair - SteveJB - 01-06-2013

I have the last run (run 7) of the Model 60. The antenna coil is open where it goes from the 10k resistor to ground, it is listed as .7 ohms.

Does anyone know what direction and number of turns it needs to be? I haven't taken it out yet and would like the details so I can be ready to rewind it quickly.

Thanks,
Steve

RE: Model 60 Antenna coil repair - kporter - 01-07-2013

While you're waiting for an answer, you can still make the BC band work by jumpering that point to ground with a jumper if you want.

RE: Model 60 Antenna coil repair - SteveJB - 01-09-2013

Thanks, I will try that.

Steve

RE: Model 60 Antenna coil repair - Ron Ramirez - 01-09-2013

I have the info, but it's bedtime for me here in the Eastern Time Zone. Icon_yawn I'll try to remember to look that up for you. Kindly remind me if I forget.

RE: Model 60 Antenna coil repair - SteveJB - 01-09-2013

Thanks Ron.

RE: Model 60 Antenna coil repair - Ron Ramirez - 01-10-2013

OK Steve

Four turns of #38 gauge, clockwise (with the lugs of the coil facing you), starting at terminal 4 and ending at the ground lug (mounting bracket).

To find terminal 4, hold the coil up with the lugs facing you and with the mounting bracket at the bottom. Pretend the lugs are the face of an analog clock, and the mounting bracket is at the 6 o'clock position. The lug at roughly the 7:30 position is lug 1, and continue counting clockwise from there.

RE: Model 60 Antenna coil repair - SteveJB - 01-12-2013

Thank you Ron. I will try to get this done this weekend. The radio is playing well after the antenna so hopefully this will restore normal operation.

Steve

RE: Model 60 Antenna coil repair - SteveJB - 01-13-2013

What does this small coil do? The radio plays well on BC with the open end grounded. I am wondering if I really need to rewind it.

RE: Model 60 Antenna coil repair - Ron Ramirez - 01-13-2013

It serves as the primary antenna winding for the "police" band (1.5 to 4 mc). There is a coil inside the antenna coil form which is the BC band primary. When the radio is switched to band 2 (police), this coil is shorted out, leaving only the 4-turn coil in the primary.

If you do not replace the 4-turn winding, when you switch to "police" band you will be shorting the antenna direct to ground and will then have no reception on band 2.

RE: Model 60 Antenna coil repair - SteveJB - 01-13-2013

Thanks. I thought it may be for the police band. Ill re-wind it now.

RE: Model 60 Antenna coil repair - SteveJB - 01-13-2013

I finished it this afternoon. It made a big difference in performance on the police band, especially at the 1500-1800kc range.

Thank you,
Steve