Bowtie Antenna Calculator

[CK-722]

Something you might want to try.

https://www.changpuak.ch/electronics/Bu ... signer.php

[CK-722]

Note that the typical old Bowtie appears to be designed for the middle of the original 470-890 UHF-TV Band. 680 MHz is the middle of the band. Since the band has been reduced to 470-602 MHz. The middle of this band is 531 MHz. An optimized antenna would have a size 680/531 times the size of a typical old Bowtie.

[k8jd]

lOOKS LIKE A BOWTIE FOR THE NEW uHF channel span would be 16.75 inches wide and 6 inches tall at the far ends. I would make one from stiff wire just the outlines of the two triangular parts fastened to a small block of wood to fasten the element and coax end to , and bracket it to a rafter in the attic.

[CK-722]

It would seem that the major advantage of the Bowtie over rabbit ear dipoles is the bandwidth.

Might be worth a try on FM BC.

The Horizontal Dimension at 98 MHz would be about 7 1/2 feet You would have to build some kind of frame to support it. You'd have to assemble it in an attic, unless there was a stairway. It would be much easier with a full height attic.

[k8jd]

One time I was working on the road and staying in motel rooms , took a good Stereo receiver with headphones , Made a wire loop one wavelength for 95 mHz. 10 ft 7 inches long, I just attached the ends to the 300 Ohm balanced input and ran the loop up to the corners of the room. It sure worked. Maybe it as over 30 years ago so I can't give a log of what I heard but was plenty and far ;D

[CK-722]

Antenna Theorists talk about the "aperture" of a receiving antenna. A large antenna has a larger aperture than a small antenna. And a large antenna is harder to be completely in a node of the signal than a small antenna. Ever move your car a few feet to listen to a weak station, and move it another few feet and you reach a node? This is also the basis of the newfangled antennas with several elements which are switched to get the best signal.