Tom_M wrote:
If you are having reception problems the first thing to do is to determine where the problem lies.
First, make sure you are pointing the antenna in the right direction. The arrow on the knob does not point to the front of the antenna. The arrow is for positioning the antenna for stowing. If the arrow is pointing north the antenna is facing either east or west.
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Most problems are not the antenna but the wiring. Check all the coax for:- Loose fittings
- Corroded connections
- Cracked or cut outer covering
Make sure that there is power getting to the antenna. While you are on the roof, disconnect the coax from the antenna and check that there is 12 volts present.
If some channels are good but others bad, you may benefit from adding the Wingman attachment. Make sure the antenna will stow okay with the Wingman attached. Or you could replace the head with the Sensar IV which has the Wingman built in. Prices are $25 > $30 for the Wingman. $50 > $60 for the Sensar IV head.
Here's a link to a good article on tuning up your antenna:
Tune up your antenna
The general consensus is that the Winegard Sensar is the best RV antenna, especially for VHF. In the U.S. about 25% of the full power stations are VHF.
One very good point Tom brings up is LOOSE CONNECTIONS on RV coax fittings are very common. Tighten everything up first and then check your reception.