Posts: 411
Threads: 42
Joined: Sep 2008
City: Ironton Ohio
Are there any visual differences between early and late version 70 chassis' ? I have a 70 that is missing tubes, tube shield and labels and was wondering, besides tracing the electronics are there any obvious signs to tell which version it is.
Thanks, Todd
Posts: 7,248
Threads: 266
Joined: Dec 2009
City: Roslyn Pa
Check volume control early sets have a dual pot later with AVC will have a single unit.
Terry
Posts: 1,400
Threads: 70
Joined: Oct 2007
City: Linn Creek, MO
Also, looking at the chassis from the back, on the left side, the early 70 has three compensating condensers. If there are four, it is a late model. This is good to know when looking at a 70 on Ebay when they don't show an under chassis picture.
Steve
M R Radios C M Tubes
Posts: 411
Threads: 42
Joined: Sep 2008
City: Ironton Ohio
Thanks for the replies. It is apparently an early chassis, I have another early set but I couldn't get to it (without an afternoon worth of digging) to look at the chassis. I would have rather it be a late chassis so as to have both versions. By the way, although both are early, one has a bakelite dial with 3 piece trim the other is a brass dial with 5 piece trim. I thought there was one certain dial type per version.
P.S. Mortz, I now understand what you mean about the grill routing, these 2 are different, one is just a concave strip cut out of the top 1/3 of the grill, the other is more like the "Russian R" picture you posted.
Posts: 15,444
Threads: 539
Joined: Oct 2011
City: Jackson, NJ
Yep. Now you know
![Icon_smile Icon_smile](https://philcoradio.com/phorum/images/smilies/icon_smile.gif)
Tim The Mad Murdock and I just went though a 70, each one, so if you have questions - ask, will be glad to help with electrical part.