Here's a picture of the Raspberry Pi fed ZLC Feed. The primary receiver is a Uniden BC350C. For the zlc_slc2 feed I have a BCT7 scanner (not shown) and the BCT8 scanner. The other 2 are just part of my monitoring shack. The Sony Air-8 was my first real air band receiver back in the mid 80's. I also have a Sporty's JD-100 receiver. Both do reasonably well in monitoring. They are a bit more steamy than the newer receivers, but their simplicity is nice. I've found that my newer Uniden 346XT which was primarily built for 800 MHz trunked radio system reception is nearly deaf as a post in the VHF air band with the stock antenna and no filtering, even when sitting at the airport. The JD-100 or the Sony are nice for both home and portable monitoring.
The most important part of the setup which is not shown is the antenna, feedline, etc. I will try to post some pictures later, but currently I have a Glen Martin 8' rooftop tower with various antennas including HF and VHF/UHF antennas. The ZLC feed is currently using an 11 element 2m yagi. It's not perfectly cut for the air band, but it's close enough that the gain from the yagi more than makes up for any loss for the elements being slightly small for the air band. (And the free price was right!) That is fed to into that shack with 50' of LMR 400 low loss coax. I've found that since I'm so close to the city, that commercial FM signals are a problem, so I run the signal through an HPN 30118 combined notch filter ( http://www.liveatc.net/forums/listener-forum/i-need-a-filter-for-my-scanner/msg44582/
) which really improves the signal. The filter feeds a 4 port Stridsberg Multicoupler which I use to share the one antenna signal with my various receivers.
Another fun part of the project was setting up a Raspberry Pi, an ARM/GNU Linux box, to run the feed. It's about 5 Watts to run, so it's nice to be able to have something small and economical to run the feed.
It's more fun to spend money on fancy receivers with lots of bells and whistles, but the biggest bang for the buck comes from the less-exciting things that get the signal out of the air and into the radio. I'm glad to be a new feeder and am enjoying sharing a great marriage of two hobbies - aviation and radio.