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Old 15-Apr-2013, 6:05 PM   #11
tripelo
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Join Date: Jan 2010
Location: Dallas, TX
Posts: 127
Mid 1960's VHF Antenna, FinCo CS-V10

The vintage antenna (previous post) is a Finco CS-V10.



The image is from: Popular Science 1967

It is covered by Finco patent No.3,427,659.

FISHBONE TYPE ARRAY WITH DIPOLE SPACING INCREASING TOWARDS THE SMALLER END

The patent describes Finco’s discovery that log periodic dipole antennas could achieve greater gain for TV frequencies if the element spacing was tapered somewhat wider towards the front. Previous thought was either; logramithic spacing which tapered smaller spacing towards the front, or uniform spacing.

In the patent, an example antenna lists dimensions and increased gain values. The dimensions given in the example match those measured on this CS-V10 antenna.

The patent was originated in 1964 and issued in 1968.

Interesting in this same time period , The University of Illinois (holder of the log periodic patent) was in litigation with several TV antenna manufacturers, of which Finco (Finney) was one.
Attached Images
File Type: jpg Finco CS-V10.jpg (24.4 KB, 19831 views)

Last edited by tripelo; 15-Apr-2013 at 7:56 PM. Reason: Book image may not have been in public domain.
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