I have read many mixed opinions on grounding in the attic so i have decided to ground just to be safe side.
Antenna attic ground plane gauge.
Preferably you want it to be shielded.
Signal strength from distant vhf repeaters does not seem to be affected even when the roof is wet.
The only concern with attic mounted antennas is the space available to you for mounting.
I have several vhf ground plane and discone antennas in my attic.
Antenna mast grounding clamp ancable 2 pack electrical ground rod clamp 1 2 to 1 inch for antenna coax cable tv tower electronic fence etc 4 4 out of 5 stars 7 9 99 9.
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.
The wood structure is pretty transparent to rf energy.
In my opinion the thicker the better.
Other locals are using screwdriver style mobile hf antennas that can work with a proper ground plane installed as a base below them.
I want to cut the cord and put a antenna in my attic.
16 gauge would be fine any thinner and you might be pushing it.
Here s part of my setup.
You will need a peak in your attic that is tall enough for the antenna to fit.
Half dipole antennas ground plane monopole and marconi antennas are different they have parts that must be electrically grounded.
Four counterpoise wires of thick gauge these are copper wires that will create the ground plane for your antenna.
An obvious solution if you need concealment and have access to a space like an attic.
Aluminum plates or chicken wire can be used to create the required ground reflection.
Theses are sprout antennas like the one on a car and wire antennas for showrt wave and ham radio.
I used good 10 gauge speaker wire on mine.
The kb9vbr 2 meter j pole antenna is 69 inches tall overall.
Grounding tv antenna and metal porch and resolving ground rod issues.
Dipole and long wire antennas can also be used with mobile outdoor style auto tuners feeding them in an attic space.
I have no idea how to ground it though.