The numbers Ive seen from a NEC model is 7.5 dbd on Channel 7, slightly higher through the middle of VHF Hi and a dropoff on channel 12 and 13. However this dropoff is suspect, as the Winegard 10 element VHF Hi antenna also displayed this, and its great on 12 and 13.
So, the short answer is 7 to 9 dbd gain (over a reference dipole) on VHF High (Channel 7 to 9).
Ch 14 4dbd
Ch 30 5dbd
Ch 50 6dbd
or there abouts...
The UHF specs are from the front end of a
Winegard 7000R. You can see that even it with the longer elements for VHF Low is only getting just above reference dipole gain. The 7000R is worth consideration if you need VHF Low as well and are within 25 miles of the towers. Its well built as well. My guess is that Winegard makes the RCA ANT751 too, which is also well built.
On VHF Low (Ch. 2-6), with the RCA ANT751, I would expect negative gain compared to reference dipole cut to channel....40" length telescoping Rabbit Ears will be better.
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