yea, i have cocidered all of what you have said. the County system i listen to dispatches for about 10 + jurisditions. i am VERY close to one of 6 towers that the systems use to transmit.
It could be primary overload. Have you tried listening with no antenna? Very few receivers work well when they're VERY close to a transmitter - even the one they're listening to. (Picture someone using a bullhorn placed right up to your ear - you won't understand anything.)
I in inbetween 2 cell towers and 2 or 3 ham operators on my street
That's not the problem if it's 24/7 interference. The last ham who operated 24/7 died of exhaustion centuries ago. (That's supposed to be a joke - even a ham repeater doesn't transmit 24/7.)
Cell towers, maybe. Good luck in figuring out which channel on which tower is causing intermod with which channel on which other tower to end up at the frequency you're listening to. (And you're not limited to 2 - you could be hearing the product of 67 different signals all mixing and producing a signal on the frequency you listen to - because there's a rusty joint on the fence surrounding one of the towers.)
at first it seemed to be just major RF overload (intermod) even with a mix of IDEN intermod (chopper sound). so i honestly think i have multi problem so i been trying to nip away lil bit at a time. so i am at the next phase of my solution which is to try a filter to block out the celluar band.
If it's intermod, unless the intermod is occurring in the scanner (very rare), a filter on the primary frequencies won't do a thing. You're receiving on-channel garbage caused by X and Y (some unknown signals). If you filter that out, you're also filtering out the signal you want to hear, since they're on the same frequency.
Intermod is the most difficult type of interference to determine, let alone eliminate. (From a commercial viewpoint - with access to a lot of expensive equipment. A hobbyist is at a great disadvantage.) If the intermod is being created in one of the transmitters (common), or a fence or rain gutter or some other bad metal-to-metal contact on property you don't own, it would be almost impossible for you to get it eliminated. (the owners of the transmitters causing it, and the owner of the transmitter or other object in which it's occurring, have to get together to eliminate it.) Just hope that it starts getting bad enough to interfere with the county's use of their system - then they'll find out what's causing it and try to eliminate it. (It took about 15 years - and a move to a different band - to eliminate the problem locally. We have a hill - which naturally has lots of towers on it - from which everyone knew it was impossible to use a cellphone or two way radio. The paging system of a hospital 6 miles from the hill was part of the problem. So was some VHF-hi equipment the county was using. When they went to an 800MHz trunk system, the problem went away. And they spent years trying to eliminate it.)
Your best bet is to just do a "hot and cold trace". Walk around with a portable that gets the interference and try to localize it. When it gets bad enough that - with no antenna - it totally overwhelms the portable, you're probably looking at the source. Then it depends on what the source is. If it's owned by the county, or a large phone carrier, you're a gnat trying to toss an elephant over your shoulder. If it's some small company's dispatch system you might stand a chance.