Audiovox AVT-1498 Operations Instructions download pdf (Page 30)

TECHNICAL INFORMATION

The following information will address TV antennas and attempt to give some insight into how TV

antennas and their application affect television performance.

UHF/VHF FREQUENCIES

VHF (CH 2 - 13) and UHF (CH 14 - 69) signals are nearly identical with one critical difference:

“wavelength.” VHF wavelengths are longer than UHF wavelengths. Therefore, the best antenna is

one that closely matches the wavelength of the signal you are trying to receive.

Also keep in mind that VHF wavelengths are significantly reduced when obscured.

ANTENNAS

Following are a few points to consider in regards to installing and choosing an antenna:

Metallic Paint

Manufacturers of boomerang antennas warn users that painting antennas with metallic paint will

hurt performance. This is also true for foil antennas used in fiberglass high tops that are painted.

Outside Metal

When TV antennas are used inside low top van conversions, the TV signal can be obstructed by the

outside metal of the vehicle. This will diminish UHF performance and may eliminate VHF reception

altogether. However, depending on antenna’s location and the direction of the vehicle, some VHF

signal may be received.

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Audiovox AVT-1498 Operations Instructions Page 30