Once all the yagis were bolted in place on the mast i used my antenna analyzer to adjust their driven elements to provide the best match in the weak signal portions of each band.
Antenna in attic lightning.
Of course performance won t be as good as with an outdoor antenna up high but it may be good enough.
The near vertical portion of wire 20 ft from the attic shortwave antenna to the receiver could pick up vertically polarized electrostatic interference.
The roof and walls will shield the antenna from lightning strikes.
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Remote rf switch control box in the shack chooses which antenna is operational in the attic.
Install a 9 1 unun at the antenna end of the coax.
The one i recommend.
Does an attic mounted antenna need to be grounded.
Most customers who mount an antenna in their attic end up installing a preamp on their antennas.
Well here is where it is good to have an indoor or attic antenna as a backup.
A second advantage to mounting the antenna in the attic is that you will be protected from lightning strikes in the event of severe weather.
Apparently for an indoor e g attic antenna the probability of being struck by lightning is not significantly affected by grounding.
The house will act as a natural shield and as long as your attic mounted antenna system is independent to the rest of your antennas lightning won t be an issue.
This is great for the amateur radio.
There are already many grounded electric lines running through the attic.
Made for enhanced high definition reception the ge pro outdoor attic mount antenna optimizes your free digital channels in full 1080p hd.