I have been experimenting with an older UHF TV yagi. I changed it over to vertical polarization and pointed it in the direction of transmitters, a simulcast Phase II system about 25 miles away. So far I am receiving the system at good strength, even with the squelch on my 436 set to 5. The audio does, at times seem garbled. I am waiting for the snow to disappear to relocate the antenna and check further.
One benefit is that I receive all the local high band signals fine as well as some distant ones. All the local 800 signals come in full strength/
For scanning receivers, TV antennas are the way to go if you need:
- high gain and a directional antenna
- broad banded to include VHF freqs, yet great on 700 and 800 mHz (something you won't get on an 800 mHz-only yagi)
- lower cost for the antenna itself than commercial-grade yagi
- lower cost for good quality 75 ohm coax
- more mounting options (just be certain to turn it vertically as pictured in this thread)