Notch Filter Help

[zguy1243]

I am looking for a source of a notch filter to kill 443.675mhz. I need a very low insertion loss, .5db or less would be nice. And F connectors would be nice but hard find I know. I am trying to notch a 800watt erp 440 repeater thats about 2 miles from my house. Any help is appreciated.

 

[iMONITOR]

I am looking for a source of a notch filter to kill 443.675mhz. I need a very low insertion loss, .5db or less would be nice. And F connectors would be nice but hard find I know. I am trying to notch a 800watt erp 440 repeater thats about 2 miles from my house. Any help is appreciated.

Contact these guys. If they don't already have a device to do the job, they will custom build, and tune one to meet your requirements.

PAR Electronics
http://www.parelectronics.com/index.html

 

[jpryor]

Tin Lee Electronics Ltd (http://www.tinlee.com/) out of Canada has done a good job with a custom filter solution for my situation. I needed to block out a pair of UHF HDTV transmitters that were causing issues with overloading.

They can do notch filters that will work well for your situation: http://www.tinlee.com/NotchTraps.htm

 

[trooperdude]

I am looking for a source of a notch filter to kill 443.675mhz. I need a very low insertion loss, .5db or less would be nice. And F connectors would be nice but hard find I know. I am trying to notch a 800watt erp 440 repeater thats about 2 miles from my house. Any help is appreciated.

RX only, or you need to be able to switch it out for transmitting as well ?

I've been VERY happy with both PAR and TinLee.

They both will do custom work, and TinLee will do F connectors and either 50 or
75 Ohm on custom order.

TinLee built a diplexer for me with N connectors at 50 ohms that I've been very happy with, and another one with F connectors at 75 ohms.

 

[gingerloffer]

Well, you can ask a professional to make you a custom notch filter because as far as I know, your requirements are not common.


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Asi
Maxrad Mobile Radio Antenna - Maxrad Mobile Radio Antenna Line Catalog by Maxrad

 

[zguy1243]

Thanks all for the suggestions, I believe i have found a good company to make me a little filter for the range. Should do the trick.