What is it???

[truetone36]

I received a strange item today. this thing came from a radio transmitter shack and I know it's a piece of transmitting equipment, but I don't know exactly what it does. Since I don't have a digicam I'll describe it in as much detail as I can.
It's a metal cabinet approx. 3 ft. tall by 18 in. wide by 18 in. deep. It contains 4 hollow aluminum cylinders which have coaxial cables connected to them. They are connected to each other in pairs. there are 2 coax cables running out of the top of the cabinet, one on the left and one on the right.
I'm no expert on transmitting gear, does anyone know what this is? Thanks in advance for any info.

[Sandy G]

Beats me. But I know about receivers, not transmitters..

[Cadillac Kid]

Maybe 'bottles' AKA a cavity filter in a repeater? Used as RF bandpass filters. Do they look like this?

[myrgatroyd]

Guess what I have. Nice game (grin)

How are the cables lead into the cylinders? Can you see inside the cylinders? Any wholes in the cylinder, perhaps for adjusting sth? Does this thing have anything like a power supply?
I would guess this are HF-filters.

Yours
Alex

[electronjohn]

I'll cast my vote for some sort of cavity filter as well.

[truetone36]

Originally Posted by Cadillac Kid

Maybe 'bottles' AKA a cavity filter in a repeater? Used as RF bandpass filters. Do they look like this?

That's them. Mine look just like that. Thanks for the info.

[Arkay]

Just curious: would these have any conceivable genuine use in a home-audio environment, say in connection with reception antennae and tuners/receivers (or elsewhere), even if it amounts to a silly degree of overkill?

[Cadillac Kid]

Arkay,

I can't think of a use for home audio. They are used for high powered transmitters under 1000 mHz.

One use would be a low power FM radio station. Your neighbors on the FM dial would appreciate them.

[myrgatroyd]

If my neighbour had a good taste for music... I would appreciate. It is a shame what the stations call "radio program". Really. A shame.