To continue with more from Jerrold, attached is a "showroom sample" Zenith antenna, circa 1979. This was used to sell its unique features up close.
The bowtie has a Z cut into it. The X-director element(s) is a classic Jerrold design as well.
Notice the notches in the director element so it can be shortened and optimized for high UHF channels.
This antenna seemed to be in production for only a few years, after which only Channel Master and Winegard survived the late 70s.
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