[Hallicrafters] Hallicrafters/Echophone EC-1

[Wj5mh at aol.com]

In a message dated 11/27/2003 2:26:39 PM Central Standard Time, 
k6uuz at juno.com writes:
I recommend you change the line cord to a 3-wire with a safety ground. 


Thanks Ed...  Yup, I've worked on another AC/DC radio and am aware of the 
shock hazards.  My first shocking experience was in 1961 with a Clarion broadcast 
radio.  Luckily, I'm still here to say that I didn't learn the first time. 
However, after the third time, I was more careful.  I was young and stupid at 11 
years.

Thanks to all who replied to my request for assistance.  I have solved the 
12K8 issue after another look at the RCA tube manual base diagram, and the 
schematic base diagram.  I had the pins reversed between 6 and 8.  But, the primary 
of T1 (lower side on schematic) still doesn't connect directly to pin 4 ( 
grids 2&4HX ).  It does connect, but through a 5K resistor, and this is not shown 
on my EC-1 schematic.  There is also a .02 cap at pin 4 to ground which 
doesn't show on my schematic.

I also noticed that pin 6 ( Plate T ) does have an extra wire on it that goes 
nowhere.  The main wire off of that pin does go to the oscillator primary 
selection switch.  Have no idea of what the other wire was used for unless it was 
some kind of gimmick capacitor??  It doesn't appear on my schematic either, 
but the wire appears to be original.

If you have a schematic that shows these additional parts/changes, I would 
certainly like to take a look at it.

Thanks,
Joe ( WJ5MH )