70 chassis - Printable Version

70 chassis - Printable Version

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70 chassis - tab10672 - 03-09-2014

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

RE: 70 chassis - Radioroslyn - 03-10-2014

Check volume control early sets have a dual pot later with AVC will have a single unit.
Terry

RE: 70 chassis - Steve Davis - 03-10-2014

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

RE: 70 chassis - tab10672 - 03-10-2014

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.

RE: 70 chassis - morzh - 03-10-2014

Yep. Now you know Icon_smile

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.