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[KC1SOZ]

Does anyone recognize this Yagi antenna? I have a strong feeling that it is an HDTV antenna, but I can find no markings to identify it, no balun or place to attach it. Sorry about the size of the image but it's the only way to get enough detail in it to help in identifying it. And no, it does not seem to be a Winegard.

[K6SDW]

Typical VHF/UHF TV antenna.....

[VE3NNM]

It is a portable VHF-TV/UHF-TV/FM antenna for a travel trailer or RV. On the back side of one of those pairs of black insulators there should be wing nuts. That's where the "75 to 300 ohm" balun goes to connect coax to it for the run to the TV.
A full installation would have the antenna mounted on the top of short aluminum mast which sits inside a bracket on the RV or trailer that locks the mast with a large wing bolt. When you get to your destination you expand the antenna by grabbing one of the antenna's large elements and pulling outward. All the elements should then swivel and you now have all the elements perpendicular to the boom. You then push up on the aluminum mast to extend the antenna above the roof line, point it in the direction you want and tighten the large wing bolt on the bracket to lock it in place. Low profile and low wind load when traveling.

EDIT: On closer inspection it appears that the elements don't have the plastic straps to make them all swivel outwards together so you'd have to open each element individually.
Also, when used for traveling it's important that the end of the antenna on the floor faces forward so the elements don't fly open from wind force when driving down the highway.

[WA3SKN]

Its a TV antenna.
The "twin lead/coax and balun" connection is up where the corner reflector is and you can see the wing nuts in the photo.

-Mike.

[KE6SLS]

As Mike says, it's a VHF/UHF log periodic broadcast TV antenna.  It's not meant for travel, it's intended to work in a fixed location.

There is no such thing as an HDTV antenna :| 

73
Jaye

[VE3NNM]

If an antenna like that is marketed for a permanent installation then it represents a severe drop in quality by a formerly reputable manufacturer.

The compromises in electrical continuity by having the large elements swivel are completely unnecessary in an antenna that is not intended for temporary operation. For antenna that needs to be collapsible those types of connections are necessary, for a permanent installation they are nothing but a point of poor strength and pending corrosion. I would never consider hang a contraption like that on a house and I have never installed a home antenna that operated in such a manner. OTA TV shut down here over a decade ago and the TV antenna installation days around here are over. I have an almost identical antenna sitting in the aluminum pile that I took off of my parent's Lextra travel trailer after the OTA shut down, so what do I know. I guess things have really gone downhill in the TV antenna market over that time.

[K1KIM]

Good parts there to build a UHF antenna. Elements don't look long enough for a 2 Meter/UHF.

If you use them make sure to scrape off the anodizing. It is a process that blocks electrical continuity.

[WB8UHZ]

 Its just a regular VHF/UHF log periodic TV antenna could be from Radio Shack.

73 Tim

WB8UHZ