If you want to ground the antenna to code the ground rod will have to be bonded to the house ground point with 6 wire. Check NEC article for antenna grounding. I use an Antron 99 and had my antenna mounted at that height for about a year or so.
Once I pushed it up to about 22 feet to the base of the antenna my receive and transmit improved a lot. As prcguy said, the closer you get to 36ft. If I were you I'd mount it to sections of fencing top rail if you're looking for a budget setup. Use cement to put the bottom 2. You can use it up to about 25 feet in height without it bending. One of the locals here managed to get 36ft with nothing but top rail, although I definitely wouldn't reccomend it at all.
Conduit also works and is somewhat stronger. It really just depends on where you're putting the antenna. You may be able to mount it to your house instead. W2PMX Member. This isn't VHF, where you need line-of-sight. The post in the ground will ground the mast and the antenna if you bond the coax shield to the mast.
But as prcguy said, if you want it to code, mount it insulated from the ground and run a ground braid to your house ground. You could use a PVC pipe in the ground, or you could mount the mast to the house.
Just don't mount a metal pipe in the ground and bond it to the house ground. If anything survives the fire when you get hit by lightning , the insurance company won't pay. I didn't say to insulate the antenna or mast from house ground. I don't have the NEC in front of me but TV and CB antennas, satellite dishes, etc are supposed to be grounded to the main house ground with no more than about ft of 10 copper wire.
A mast on the side of a house is usually not considered a ground rod but it would not hurt to bond that to a nearby ground rod with the NEC specified method which includes bonding the ground rod to the house ground with 6 copper wire. LtDoc Member. Joined Dec 4, Messages 2, Location Oklahoma.
I have never had an antenna that was 'too high' except in cost. I have to think that there are specific reasons for not getting an antenna as high as possible, but in general, I honestly can't think an HF antenna can be too high.
It can certainly change the radiation characteristics, but that's not such a bad deal in all cases. I can also see that there are practical aspects that can determine the 'usable' height of any antenna.
Simply put you really don't want electronics in the near field where they can radiate noise into the antenna and transmitted signals can interfere with them. What you have here is a. The whole idea behind an omnidirectional antenna having "gain" is in the ground hugging angle, why ruin it?
Hint; a low angle over the horizon refracting off the ionosphere comes back to Earth much farther away, really great for long distance skip during a band opening. Use power efficiently and you won't need an illegal amplifier, remember if you can't hear 'em you can't work 'em.
Very interesting, Warren. Got it up and installed, Man the skip its picking up this morning is killer! If anyone wants to change their username contact an admin and it will be done.
Multiple accounts belonging to the same member will be deleted without warning. Joined: Jun 7, Messages: 13 Likes Received: 2. Joined: Nov 22, Messages: 2, Likes Received: Zman K9FON. Joined: Nov 26, Messages: Likes Received: Joined: Apr 8, Messages: 6, Likes Received: Now compared with a A99 in testing most stations received my signal at 0. The small tightly wound coils in the Max are more susceptible to loss than the matching system used on the Maco.
For more reading on coils you might read these articles article 1 , article 2 , article 3. The A99 was famous for creating problems and complaints from neighbors and while the Imax is much better than the A99 it still is known for TVI issues.
Many of these can be solved be installing a choke coil just below the feed point of the antenna. We ran the current Max for around a year and in that time I can say it has performed flawlessly with no changes in SWR and no physical issues with the antenna it survived multiple 60mph storms this winter.
The antenna is broad banded enough that you can use it on 10 meters and I have heard of some dedicated 10 meter operators chopping off a small amount of the top section to shorten the antenna for 10 meter use to achieve a better SWR. Other Ham operators use tuners and utilize this antenna for multiple bands.
Are there better performing vertical antennas on the market than the Imax ? Remember me Log in. Lost your password? No lightning arrestor or static discharge unit is needed! The three sections are the following lengths- Base Section —
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