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philco 37-11
Ron Ramirez
Silent Key
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Posts: 13,776
Threads: 580
Joined: Sep 2005
City: Ferdinand State, Province, Country: Indiana
#2

08-15-2008, 05:28 PM
Read this treatise at Chuck's site. It explains the 1937-38 Philco automatic tuning system. Chuck also has a separate page dealing exclusively with Magnetic Tuning.

In a nutshell, Philco's first attempts at automatic tuning suffered from the inaccuracies of a mechanical system, so "Magnetic Tuning" (in reality, automatic frequency control or AFC) was added to the mix to keep the preset stations, as well as any strong station tuned in on the dial, on-frequency.
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Ron Ramirez
Ferdinand IN
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philco 37-11 - by philco phan - 08-15-2008, 04:58 PM
[No subject] - by Ron Ramirez - 08-15-2008, 05:28 PM
[No subject] - by philco phan - 08-15-2008, 05:30 PM
[No subject] - by Guest - 08-16-2008, 02:29 PM



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  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration