Ok what are they?

I found these in a box that I got from a SK estate auction. What are they? I know two are low and high pass filter but where can I get info on all of them? I tried online but all I get is websites that offer no info.

First and fourth pictures appear to be high voltage capacitors.
Second picture is tough to tell with the glare but appears to be a choke filter with an interesting altitude restriction.
Picture 3 would appear to be a VHF Low, High pass filter
#5 looks like an audio filter with a 3KHz cut off.


I doubt that you will find a whole lot online about them. they appear to be mostly pre-WWII vintage. If you have the test equipment to check them out, I'll bet that most have failed as the dielectrics used tended to dry out. The choke may still work but I am not sure what use it would be in the shack.
Looks to me like some conversation starters and interesting paper weights.

Bruce

Actually they all have date stamps of the 70s and 80s on them. The second one I found more info online and it looks like a transformer of some sort. How would I go about testing them to see if they worked/ Their all still in the box never used. I even found some old IF amps and a crystal oscillator in the box from the 80s.

Having only two wires, the second can not be a transformer. The picture on the front is of a standard choke wound on a metal form.
A transformer would have two or more additional wires and a winding pictured on the other side of the plates.

To test you would need an LC meter or a scope with a signal generator. The procedure would be much more than I could write up in a reply to a post.
A quick search
https://www.google.com/webhp?source...1&espv=2&ie=UTF-8#q=capacitor inductor tester

will show you what is commercially available as well as a couple of articles on do it yourself.

Again, I don't know your shack setup, but I don't have any 350VDC power supplies that need filtered.
I might suspect the choke as being to filter 400Hz from a power line but with a 10,000 ft ceiling it was not designed for aircraft work.
The HPF doesn't look big enough to handle much power, and unless you are playing 6M and getting into televisions, most modern rigs don't need after filtering.

I suppose the audio filter could be used if you need to make audio sound like it is sent over POTS.

Have fun
Bruce

Not sure what Im going to do with them. I can sell them on ebay like some have already. Found out they go to a old military radio that is sold on ebay and a few other sites so there is a small market for the parts. One of them has a sma male connector on the back and i have the sma cables that came with them all.