Model 650B Tombstone Project

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Model 650B Tombstone Project

Ron Ramirez
Silent Key

Posts: 13,776
Threads: 580
Joined: Sep 2005
City: Ferdinand State, Province, Country: Indiana

12-04-2005, 04:26 PM

Ed - thanks. In tombstones, Model 650B was the first step down from Model 116B in 1936; Model 640B, the next step down, used the same cabinet and had the same frequency coverage; just one less tube (7 in the 640 compared to 8 in the 650). All use the same dial drive mechanism as the 116, but the frequency coverage is different.

The 650B is sort of a junior version of the 116B.

Model 660 was only available in console cabinets, not as a tombstone, in 1936. It was built on the same chassis pan as the 116 and has ten tubes. Just a slight step down from the 116 in performance; in fact, the only real difference besides the frequency coverage is the 660 uses a Type 75 as second detector-AVC-1st audio, while the 116 uses two tubes for these jobs (37 for 2nd det.-AVC and 77 for 1st audio). Oh, and the 660 has a four-point tone control; the 116 has a five-point control.

--
Ron Ramirez
Ferdinand IN

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Model 650B Tombstone Project - by Ron Ramirez - 12-04-2005, 12:27 AM

[No subject] - by don'tdomelikethat - 12-04-2005, 09:11 AM

[No subject] - by Ron Ramirez - 12-04-2005, 04:26 PM

[No subject] - by don'tdomelikethat - 12-04-2005, 04:59 PM

[No subject] - by Ron Ramirez - 12-04-2005, 06:16 PM

[No subject] - by Bill Hutchinson - 12-04-2005, 08:00 PM

[No subject] - by Ron Ramirez - 12-06-2005, 11:04 AM

[No subject] - by Bill Hutchinson - 12-08-2005, 10:43 AM

[No subject] - by Derek D - 12-12-2005, 12:29 PM

[No subject] - by Ron Ramirez - 12-12-2005, 01:28 PM

[No subject] - by Ron Ramirez - 12-19-2005, 12:55 AM

Re: Model 650B Tombstone Project - by Ron Ramirez - 05-23-2011, 06:47 PM

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