Is there a way to reduce the range of a receiver other than adjusting gain?
I have a two piaware receivers running (SD Card) 3.6.2 . One has a home made coco antenna that I use the get maximum range. The other I use with a stock whip antenna and I only want to show local traffic. The reason I do this is because I live in an area that is world heritage listed. I am under a flight path and there is a large group of people complaining about the number of planes flying overhead ( I love it ). A new International airport is being built nearby and residents are worried about the number of planes increasing. I like to keep a count as many seem to exaggerate the numbers.
So far I have experimented with antenna placement and adjusting gain. I have had good results but I find I have to keep tuning gain from time to time to only show traffic within 10 to 20km. I also end up counting some I dont want and missing some I do.
If I was able to filter out all traffic further than 20km from the receiver it would be perfect.
You can see the two receivers and range on my virtual radar here