HF Antenna

[taco6513]

I had a Siro Antenna I was using to 11 and 10 meter. The wind broke the antenna off at the base. I am thinking of a multi-band HF antenna

to replace it with. Planning on upgrading my license in the future and upgrading my radio also.

I have been told I will need a manual antenna tuner. Could I get some recommendations on tuners and HF antennas?

I have a 40ft tower I could mount on or the top my my commercial metal building. Maybe use building as ground plan. Building is 148X25.

Thanks

KI5GXD

[kidphc]

Any vertical should work. To get resonant bands with a tower you could run a fan dipole, or any number of wire antennas.

Only time you would need a tuner is if your system is not impedence matched.

Even then I would recommend an auto tuner.

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[tweiss3]

The multiband verticals supposedly work well (Hustler & Cushcraft), but you need to have a minimum of 32 ground radials. If you mount it on the roof of your metal building, it might make a good substitute for the ground radials, but they are 25-32 feet tall, and would need guy wires, and tuned for each band as you assemble/install the antenna. Also, verticals tend to have a higher noise floor.

Dipoles (fan or single band) or EndFedHalfWave would be a more efficient choice. A 80m thru 10m is 134 feet in length, and a 40m thru 10 is about 64 feet in length. They can be installed parallel to the ground at 30', or as slopers and inverted "V".

[kidphc]

The multiband verticals supposedly work well (Hustler & Cushcraft), but you need to have a minimum of 32 ground radials. If you mount it on the roof of your metal building, it might make a good substitute for the ground radials, but they are 25-32 feet tall, and would need guy wires, and tuned for each band as you assemble/install the antenna. Also, verticals tend to have a higher noise floor.
Dipoles (fan or single band) or EndFedHalfWave would be a more efficient choice. A 80m thru 10m is 134 feet in length, and a 40m thru 10 is about 64 feet in length. They can be installed parallel to the ground at 30', or as slopers and inverted "V".

That is exactly why I was thinking vertical with a inverted v mounted to the tower. Can switch between antennas.

Or better yet forget the vertical and go multi element yagi rotator and an inverted v.

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