What you have is an old Winegard WG7082 antenna with a Channel Master 9512 rotator and what appears to be a Channel Master 0064B preamplifier. It's pretty clear from the photos that age has caught up with this system: the weather boot has come off the preamplifier, and it looks as if the preamplifier itself was mounted in a manner (turned 90 degrees on it's axis on the mast) that subjected it to weather. Take heart: it was a very good antenna in it's day, and perfectly suited analog reception from Sacramento. Several issues have changed since that antenna was first installed.
Digital reception has changed how signals are now received: the several of the Sacramento stations that were previously on VHF are now on UHF, but you still have VHF channels 9 and 10 from Sacramento receivable at your location. Digital TV stations use less transmitter power than their analog counterpoints to deliver a signal. You no longer need the low-band VHF reception capability of the WG7082 to see KCRA or KVIE. Secondly, age and weather have taken enough of a toll on your antenna system that we would expect it to be working at only about 40% of original design capacity. Additionally, you are about 70 miles from the Sacramento transmitters, and atmospherics will play a big role in the quality of your reception, even though TVFool.com claims that you should have adequate signal strength in your area to receive those signals. I would strongly suggest that you consider replaciing your entire roof antenna system with all new components that reflect the new digital station's transmitting realities of your area.
My suggestion would be to use a 2- antenna based on an
AntennasDirect 91XG UHF antenna plus a an AntennaCraft 10Y-7-13 VHF yagi mounted on the same mast, separated by 4' with the UHF antenna at the top pf the mast and the VHF antenna mounted just above the rotator. I would use a standard 5' mast above the rotator to carry the two antennas. Use either a Channel Master Titan 7777 dual-input preamplifier, which has separate VHF and UHF antenna inputs, or an AntennaCraft 10G222 preamp, which is similarly equipped with separate inputs. You should replace all of the existing coaxial cable with new RG-6u coax cables using the very best compression-type "F" fittings available, such as Thomas and Betts or similar quality, and be sure to use weather boots and anti-seize compound on all outdoor fittings. Good rotators include the Channel Master 9521a remote-control rotator, or the less-expensive AntennaCraft TDP-2 rotator. Replace all of the rotator cable you now have with double-shielded 3 conductor wire.
Once installed, you should find a notable improvement in your TV reception, especially in the UHF stations. The cost for such equipment won't necessarily exceed the cost of a large single all-purpose antenna, but will yield better results.