[Hallicrafters] Hallicrafters/Echophone EC-1

[Deane D McIntyre]

Wj5mh at aol.com wrote:
> 
> In a message dated 11/27/2003 11:56:45 AM Central Standard Time,
> w7ts at comcast.net writes:
> I have about 6 Echophones in the basement.
> 
> Hello Ken...  I'm in the "layout review" stage...comparing the schematic I
> have with the radio, and I have already found differences at the 12K8.  On my
> schematic, it shows the resistor coming off of pin 5 running to pin 6 with a cap
> to ground.  The low side of T1 primary runs to pin 4.  Well, in the radio, it
> looks like the resistor off of pin 5 runs to cathode/pin 8 with a cap to
> ground, and the low side of T1 primary doesn't directly connect back to the 12K8.
> So, I'm not sure what I have.  Do you know of a difference between an EC-1
> and EC-1 Commercial?
> 
> Maybe I should try and find the layout for the EC-1B schematic, and see if it
> uses a 12K8.
> 

The EC-1B (I have one in my collection) uses a 12SA7 as the converter tube;
the tube line up is the same is the original six tube S-38. Have manual
(all four pages of it) with schematic and alignment info if anyone needs one.

73,

Deane McIntyre VE6BPO