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Author Topic: Thinking Antron A99 or Imax 2000 for 10m but dont want to overspend...  (Read 2494 times)
KB1TXK
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« on: April 02, 2011, 06:44:01 PM »

For 10m specifically, is an Imax 2000 better than an A99?  Should I bother with the ground-plane kit or can I just use my own wire (14ga solid) w/ equal result?

This will be used on an HTX-10, and possibly (hopefully) an ft-897. If that matters. No amp.


While I am having a good time w/ 10m on an inverted vee, I suspect I'll have a better time w/ a vertical.  I've also read that an A99 is better for 10m, and the Imax is better for CB. I didn't know if anyone else was of the same opinion.


99.99999% of the time , whatever antenna I go with will be used on 10m. I have an el cheapo CB 'matcher' that ive used between my 10m vee and CB, so I assume it will work w/an imax or a99 thats tuned for 28.400...in case I need to go there.

« Last Edit: April 02, 2011, 06:46:58 PM by KB1TXK » Logged

AC5UP
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« Reply #1 on: April 02, 2011, 08:21:43 PM »

http://www.eham.net/reviews/detail/830
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VE7REN
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« Reply #2 on: April 03, 2011, 12:47:20 AM »

i have both app and 2000 imax. either one kicks but over my g5rv or dipole on 10 meter. 17 meter too. huge difference on recieve and tx. get one and get talking..............
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N4NYY
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« Reply #3 on: April 03, 2011, 06:31:53 AM »

I would go with the Imax. I have one and it tunes 10-17M. I don't think it is all that efficient on 17M, but it still works. It works very well on 10-15M, and I have made numerous contact all over the place on 5W QRP on mostly 10-15M. I have heard the Antron on the air and it is junk. People who went from the Antron to the Imax, made a world of difference in my receiver.

Now, is it my first choice for an antenna? No. I would love to have a tri-band Yagi. I have never used a reference antenna to compare the two. There is some sort of matching network in there that allows it to tune on 10-17M. Realistically, It should not be able to tune 10-17M,unless you have some traps or such. But for the cost and easy of setup, it is hard to beat. For about $100, you can get on the air quickly. You will have your detractors here that do not like it because it is a CB antenna. But as I said, if it is about cost, setup, etc, it is hard to beat. If cost and setup is not an issue, you can go in other directions.

One other thing, on local groundwave, I get about 40 miles range on 10M for SSB local rag chew (compared to about 10-12 mile range on CB). So it you like to do local rag chew on 10M, it serves that purpose.
« Last Edit: April 03, 2011, 06:33:39 AM by N4NYY » Logged
KD8GEH
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« Reply #4 on: April 03, 2011, 07:37:19 AM »

IMAX2000 for sure. Note its kinda tall, but kicks pretty good on 10-12..works on 15 and 17 .  If your on a budget, I wouldn't bother with a GP kit. I guess you could make some but they would be difficult to orient 45 degrees.

73,  De Dave KD8GEH
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KB1TXK
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« Reply #5 on: April 04, 2011, 06:05:29 AM »

Thanks for the opinions. Sounds like the Imax will be the one I go with.  If I happen to have the extra $ for the groundplane kit I may go that route...but I'm thinking 3x 8' lengths of 14ga inside of narrow PVC will fit the bill. We'll see.

Thanks again!
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KB3HG
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« Reply #6 on: April 04, 2011, 07:14:27 AM »

Well, I have had the same Antron 99 for over twenty years. still works. Gotta love the 9.9db gain claims, like they say it is what it is. A Basic antenna, I think back in the 80s it cost me about 60.00, fiberglass is still good. I use it for 10 meters only. I also have a ground plane made from  some 2/0 wire I was given.( 4 10' ) for 3.00 /year I'm not complaining, could I have done better? Yes. there was a 11 meter antenna a long time ago Sigma  5/8, i forget who made it but I could not find a used one at the time. The A99 is a compromise antenna on an other band other than 10/11 meters. Sure it loads up but the efficiency is down. It definitely beats no antenna and no transmitting.
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KB1TXK
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« Reply #7 on: April 04, 2011, 07:36:47 AM »

Yeah this won't be used on any bands other than 10 and 11.
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WB6BYU
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« Reply #8 on: April 04, 2011, 08:59:34 AM »

In that case I think AC5UP had the best answer - the Cushcraft AR-10.

It's basically the same antenna - a half wave radiator with a matching network at the base.
Longer (like 5/8 wave) won't work any better because the current distribution isn't right.
(Sloping radials actually make a 5/8 wave antenna WORSE, but they might help reduce
common mode currents on the feedline that raise the angle of radiation even further upwards.)

And if you decide you want to try a different band, you can remove the base loading coil and
reuse the aluminum tubing as a quarter wave vertical.

I certainly wouldn't waste money on the other options if they cost more than the AR-10.
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