Help Identifying a commetcial UHF antenna

[SCPD]

I bought this antenna back sometime around the early 1990's. Unfortunately, I cannot locate the paperwork that came with it so I am not sure what type it is.

I know it is for the 450-470 MHz range but that's it. The photos are what it looks like after I removed it from the fiberglass housing. My hope is to convert it to an 850 MHz antenna since I have moved and no longer have a use for a 400 MHz antenna.

I know it is a commercial-grade antenna, or at least that's what it was sold to me as. I think I paid about $80 for it if memory serves.

Anyway, does anyone know what type it is? It surely isn't 1/4-wave and not a ground plane, but that's all I can tell.

Photos are attached and include close-ups.

 

[evfd1625]

Measure from the connector to the coil, if its approx 3 inches you can cut off the rest of the antenna and it will be 1/4 wave on 800 mhz.

 

[SCPD]

Thanks for the idea.

It's actually about 7.5 inches from connecter to coil.

 

[mmckenna]

Looks like an old collinear UHF antenna, and I think you are correct, someone removed it from it's radome.

Cut it for 1/4 wave on 800 and slip a piece of PVC pipe over it.