help ID antennas

[vt4runner]

found these in a box in neighbors garage. Any input as to what they might be for would be helpful

NMO base, 12" whip

threads onto a 3/8" stud, 13.5" tall, had mini UHF connector on cable

17.5" long, magnetic base

 

[fineshot1]

The first pic is a 1/4 wave nmo mount antenna and if its about 12" then its cut for about the 220mhz ham band. The other two are either 800mhz cellular or 800 or 900mhz LMR antennas. Would need make/model numbers or sweep them with an analyzer to know exactly what they are for.

 

[hoser147]

fineshot hit it on the head On the first one the mount will probably cost as much as the antenna or more, so hopefully you have it all. Seems to me that ive seen the second one advertised somewhere as a scanner antenna.

 

[vt4runner]

i have mounts and coax for all the antennas. the second and third antennas dont have anysort of marking to identify make/model. both were on magnetic bases.

 

[nd5y]

The bottom one looks like it has a base coil made of copper wire. If so it is probably a CB antenna.

 

[vt4runner]

How long would i need to cut the 1/4 wave down to for 450-470 mhz. about 6.5" i belive, just wanted to check myself.

 

[W6KRU]

How long would i need to cut the 1/4 wave down to for 450-470 mhz. about 6.5" i belive, just wanted to check myself.

That sounds good, that is in the ballpark. You would need an antenna analyzer to get closer than that.