10-14-2016, 08:15 PM
(10-09-2016, 11:53 PM)Radioroslyn Wrote: If you can measure the output of the oscillator like with a scope and it's pretty uniform across the dial it maybe a problem with the tracking of the rf stage rather than the oscillator. Just a thought.
Terry, All: I am just getting back to this for a few minutes. I have prints coming and micas also. I can't believe I did all this with the huge tube shield off! That was that cause of the backward dial .Just rf going right around the tuning gang ? Well putting the shield on stops that as well as just about every other station from coming in.In fact just putting my hand near the 1st detector ,oscillator or Rf tube stops all but one strong local station . I do not have much time to mess with it now .Though I would post the ohms on the coils as I think they are
Rf coil primary 7.8 sec 4.8
Coil#6 primary 17 sec 4
Coil 8 primary .7 secondary 5 and 2 oscillator
Coil19 primary 28 sec 28
Coil22 primary 75 sec 53
Not sure where I am going with this .But it has to work with the shield in place. But I may have mislead everyone (including myself ) with the description of symptoms because of this.
Some of the other checks I have done are the voltage checks
But I think I need to go back and double check. Coil #6 with a secondary of 4 ohms seems wrong.
But realize that this check mainly shows things are connected. I had these coils out to inspect ans make sure nothing else was influencing my readings . And it looks like coil #6 had been "fixed" with a larger wire soldered up from the terminal to the beginning of the outside or secondary coil .However this may have been just to get rid of the rot that occurs which many here talk of . It does not appear to have been unwound .Coil 19 and 20 seem to have reasonable values .I would expect a 1 to 1 relationship at coil six .But ohms do not directly tell that story .One coil is wrapped around the outside of the other .Again this may all be fine ?
