WOW! I wish it was this easy every time. That is one of the best TV Fool reports I've seen. I count 34 real channels which should provide more than twice that number of programing feeds. And they are all on the same azimuth. It doesn't get better than this.
For a slight over-build, I would recommend an Antennacraft HBU-33
http://www.solidsignal.com/pview.asp...0Antennas&sku= aimed at 336° per your compass. That mounted on your chimney should provided ample signal strength to drive up to four receivers with no amplifier in the system. An HBU-22 or even the RCA ANT-751 would work. For that matter, a cheap set of rabbit ears (no amplifier) should work if there is no metal in the walls.
Channel Master offers the CM-7000pal
http://www.amazon.com/Channel-Master.../dp/B0033TJPJW a turn-key DVR solution.
Windows 7 Home Premium includes the software for a home theater PC, including DVR functionality. You would need to add a Silicondust HD Homerun tuner
http://www.amazon.com/SiliconDust-HD...5679176&sr=1-1 If you are a Linux fan, MythTV is the HTPC software that comes to mind.
I own three HDHR units:
http://forum.tvfool.com/showthread.php?t=820 I can grab the laptop and watch HD TV anywhere in range of my wireless-G access point.