How Much Signal Block From Anenna In The Attic

Investing in a low noise pre amplifier can also improve the signal levels.

How much signal block from anenna in the attic. If your house has a tin or steel roof then the attic wouldn t be much of an option. This antenna has all the reception power of an outdoor antenna but features a curved metal frame of reflectors that are designed for fitting easily into smaller attic spaces. Attic antenna attic mount loss is at least 3 db for a 3 4 inch plywood roof covered with roofing paper and one layer of 3 tab asphalt shingles. Most roofs have asphalt shingles on them which won t appreciably block rf radiation.

What is the typical signal propagation loss to be expected from a 2 meter 70cm j pole antenna mounted in an attic where the roofing material is the common 5 8 plywood and asphalt shingles compared to the same antenna mounted outside at the same height. The kb9vbr 2 meter j pole antenna is 69 inches tall overall. You will need a peak. Improving an attic shortwave antenna a case study.

Is it of the magnitude of reaching only half the distance or is the loss less significant. The effective range of most antennas is lowered by 10 15 miles with an attic installation so you may consider getting a more powerful antenna than you would typically need with an outdoor antenna. The only concern with attic mounted antennas is the space available to you for mounting. How much loss can be expected.