I have a guess, but it's just a guess.

Anyone want to share some insight?

Bomb?

flaux capicitor?

where is the Mr. Fusion?

RF filters

Looks like a multi-stage filter, but what's weird is that the frequencies were we usually use RG6 have such high frequencies that those cans are ridiculously oversized. Similar, but still smaller, filter cans were used in a TRF AM receiver from the late twenties that I had back in the 1960s.

I say RG6 because that's what it looks like, seeing the wire next to the F connectors. I note the F connectors are old crimp style, so this could be twenty years old. That's still no excuse for those huge cans. [I know, I know, I said huge cans.]

I cannot tell by the size, but my guess is they are tuning cans for duplexed receiver and transmitter to the same antenna. Bandpass and notch filters.

Strike that.

They all have RG6 and crimp connectors, so most likely headend notch filters for Cable television.

THis would be it [Link: microwavefilter.com]

I'm not sure if the connectors are F or SO-239. Here's a picture of an SO-239 connector, often referred to as a UHF connector.



Another clue involves that all the items are connected in series, so there is a single input and output.

As the items are all in series, that does away with the possibility that it is a duplexer for transmitter and receiver to the same antenna. A duplexer would normally have 3 connectors open, one for the antenna, one for the transmitter, and one for the receiver.

The cans look like high quality notch filters. So I am assuming that these are notch filters, with each can tuned to a seperate notch frequency. Could be on the head end input to an apartment building or hotel where all the rooms get the same cable TV service.

If they were SO-239s, the cable, being almost as large in diameter as the connector, could not possibly be bent and twisted in radii as small as in the photo. I've not seen many connectors for SO-239s, but I doubt there are crimp connectors for them. I vote for F connectors.

That certainly looks like it.

They are F connectors in and out.

This is a large, old home that we are doing an extensive A/V remodel on. The unit in question is attached to the wall next to the spaghetti mess of the cable distro.

Can anyone explain what it would be used for or should I just remove it.

Just remove it. Let's say you were using a normal antenna system, but wanted to modulate a laser disc into the house. You could use a channel 3 modulator, but the problem with them is the lower sideband, which interfere(d) with channel 2. This filter, if set up as a single channel pass filter, could be used to remove the lower sideband and allow channel 3.

However, I did such a thing in the nineties, and we used an active single-rack space filter that cost $300 at that time. If that's right, the thing you've got is much older than that, probably from the days of cable (because of the crimp F connectors) but early on, before active devices were readily available. Maybe 1985.

It is a micro wave filter part called the brick. I just took out the one used at the Arizona Cardinals Stadium. It was used to block channels that the owner did not want or the the installer was inserting new channels where he,she wanted. Take it out and build your own system.

I go with notch filter.

[I know, I know, I said huge cans.]

^ He said huge cans.

I can count on you, Julie!