05-13-2024, 06:43 PM
Hi, I’m new to the phorum. I’m completing an electronic restoration of a Model 90 (2-45s). The outer winding on the 1st detector coil is open. What is the wire size and number of turns?
|
1st detector winding
05-13-2024, 07:06 PM
Count the turns as you unwind them.
Note the direction. Even if not important, it's a good practice. Gauge is not superimpirtant. 39-40 is ok. 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. 
05-13-2024, 07:15 PM
Welcome to the Phorum, TimG! Another option is to run a needle gently down the coil and count the 'bumps'. Each bump is one turn.
You may want to see the restoration of a Model 90 by our founder, Ron. https://philcoradio.com/library/index.ph...on-part-5/ Take care and BE HEALTHY! Gary "Don't pity the dead, pity the living, above all, those living without love." Professor Albus Dumbledore Gary - Westland Michigan 
05-13-2024, 11:43 PM
If you are speaking of the primary of #7 I used 96t of 38g wire.
https://philcoradio.com/library/download...n%2056.pdf When my pals were reading comic books I was down in the basement in my dad's workshop. Perusing his Sam's Photofoacts Vol 1-50 admiring the old set and trying to figure out what all those squiggly meant. Circa 1966 Now I think I've got! Terry
05-14-2024, 10:10 AM
Hi Tim,
Pardon my manners it was kinda late last post. The 1st gen 90's (p/p 45's) and the 2nd (se 47) use the same rf plate coil. The 3rd gen (p/p 47's) has a different IF frequency so I would think some of the rf parts are going to be different. Probably not the rf amp coil. https://philcoradio.com/phorum/showthread.php?tid=24784 When you have the tuning cap out to replace the grommets under it do take the screws that fasten the stator plates in place loosen one by one and re-tighten one by one. My set had an intermittent problem where the volume would drop down abt 1/2 after a hour of use. 10 or 15 mins later it would resume at full volume. Very annoying. That was the fix. Welcome to the Phorum Have fun chasing electrons! When my pals were reading comic books I was down in the basement in my dad's workshop. Perusing his Sam's Photofoacts Vol 1-50 admiring the old set and trying to figure out what all those squiggly meant. Circa 1966 Now I think I've got! Terry
« Next Oldest | Next Newest »
Users browsing this thread: |
|
|
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
