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Author Topic: 10 Meter Antenna  (Read 13175 times)
KC7NFF
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Posts: 36




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« on: July 13, 2010, 08:54:47 PM »

Looking for a good 10 meter mobile antenna to be installed on the fender of a 99 wrangler with a soft top.  I am installing an FT-8900r and will be purchasing a CR627b which is a triband 6m. 2m, 70 CM Antenna.  Not sure where to find this monoband 10 meter antenna. I am wanting to stay away from hamsticks.  Any help would be great.
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WX7G
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« Reply #1 on: July 14, 2010, 02:07:59 AM »

Why stay away from Hamsticks? It should be very efficient on 10 meters. You can go with the Hustler mobile antenna. It too will be quite efficient.
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K0BG
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« Reply #2 on: July 14, 2010, 06:23:15 AM »

Why not just use a full-sized whip? Just a tad over 98 inches, so a slightly trimmed CB whip will work very well. No tuning, no matching, required.
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K3GM
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« Reply #3 on: July 14, 2010, 06:53:37 AM »

I used a Larsen 27NMO (I think), with an NMO mount.  On my previous vehicle, I had it on a fender mount.  I'm in heavy road salt country, so I potted the underside of the mount with copious amounts of RTV.  It's worked well for many years.  The antenna is now atop my Tahoe, along with a small Diamond or Comet 6m/2m/70cm, also many years old.
« Last Edit: July 14, 2010, 10:51:36 AM by Tom Hybiske » Logged
VA3WXM
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« Reply #4 on: July 14, 2010, 09:19:07 AM »

I second the Larsen NMO27.  Just a matter of finding a mount that will work.
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KC7NFF
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« Reply #5 on: July 14, 2010, 04:39:51 PM »

WX7G,  I read that hamsticks are not so hot, but you are saying that they will work very efficiently?
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K3GM
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« Reply #6 on: July 14, 2010, 06:17:14 PM »

I've had really good results using $15.00 cheapo Workman hamstick style antennas on 10m and 6m.  Both have a slow spiral wrap up the fiberglass stick and adjustable stingers on top.  I use the 6m stick on the top of my Tahoe while underway, but the 10m stick is too tall for roof mounting.  Last spring, I worked super rare EL58 on 6m from MA while using the stick, so I'm not complaining!  By the way, these antennas come with an NMO base too.
« Last Edit: July 15, 2010, 04:15:24 AM by Tom Hybiske » Logged
KD4LLA
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Posts: 455




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« Reply #7 on: July 14, 2010, 06:42:48 PM »

There is nothing "wrong" with a hamstick antenna.  Just remember it is a compromise until you get a better antenna.  For an antenna that can be had for $20 and put in a old CB mount...  I used one for fifteen years on my pickup, with a R/S HTX-100, and most folks here will laugh at that.  All I can say is, it worked for me, as I didn't have time to be a purist.  Also used a full size 1/4w whip.  The important part is getting an antenna up, any antenna, and operating the radio!
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KE3WD
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« Reply #8 on: July 14, 2010, 08:23:19 PM »

Trim a Wilson 1000 CB antenna to resonate on 10. 

Added advantage to its rather good performance is that most folks will likely think there is nuthin' but a CB in mah truck...
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KI4SDY
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« Reply #9 on: July 14, 2010, 11:25:03 PM »

My first choice would be the 9 foot CB whip without the spring attached at the bottom. Just screw it directly into the mount. It will then be tuned in between 11 meters and 10 meters. You can use it for both with a switch box. If you want to use it for 10, 11, and 12 meters, just put the spring on it and it will perform great on all three. You don't need to trim anything. You will find that it is very broabanded with low SWR. Why ruin a good antenna?

You can use a Wilson 1000, but like any loaded magnetic antenna, it will be a compromise in contrast to the 9 foot whip and more expensive. You won't need to trim that either. Just tune the whip by sliding the bottom of the wire up and down inside the coil.

Obviously, some of these "eHam experts" are just parroting what they are hearing from others. Try the antenna first, before you start cutting it up for no reason. Roll Eyes
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K1WJ
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« Reply #10 on: July 15, 2010, 09:04:26 AM »

A 10 meter hamstick is the most efficient hamstick made - good to go - at 8ft = 1/4w on 10m. 73 K1WJ
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K0BG
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« Reply #11 on: July 15, 2010, 12:41:21 PM »

Actually, 9 feet (108 inches) is a bit long. The real over all length, including a ballmount if used, is just 99 inches (28.4 MHz).
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AA4PB
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« Reply #12 on: July 15, 2010, 01:05:40 PM »

WX7G,  I read that hamsticks are not so hot, but you are saying that they will work very efficiently?

On 75M, Hamsticks are pretty poor compared to big screwdrivers and such. On 10M I'll bet you can't tell the difference between a Hamstick and a screwdriver. How efficient they are depends on the frequency. For a given physical length, lower frequency means more loading coil which causes more loss.

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K0BG
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« Reply #13 on: July 15, 2010, 03:11:06 PM »

What Bob says is true, however, no HF mobile antenna surpasses about 90% efficiency, perhaps a bit less. The reason is, there will always be some ground losses (2 to 5 ohms on 10 meters depending on the mounting location), and a wee bit of conductor loss, even if it is made of pure silver.
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KI4SDY
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Posts: 1452




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« Reply #14 on: July 15, 2010, 06:18:29 PM »

Actually, I have proven again that another "eHam expert" does not know what he is taking about. The 9 foot whip I was referring to was with the 6" inch spring attached." Note; I told the inquirer to remove the spring for 11/10 meter use, which brings it down to 102". Check the Radio Shack site and put "CB stainless steel whip" into the search panel and you will quickly come up with the famous 102" whip that has been the standard since the 1950s! Roll Eyes

I would also appreciate it if you would not make comments, concerning my comments, just to annoy me and confuse the inquirer. I have placed you on "ignore."
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