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Reviews Categories | Antennas: VHF/UHF+ Omnidirectional: verticals, mobile, etc | MFJ-1729 Dual band antenna Help

Reviews Summary for MFJ-1729 Dual band antenna
MFJ-1729 Dual band  antenna Reviews: 18 Average rating: 3.9/5 MSRP: $34.95
Description: MFJ's Power Gain is ham radio's most powerful dual band magnet mount mobile antenna!
It gives you outstanding gain on 440 MHz and 2 Meters. Low SWR lets you rig deliver full power safely. Get a whopping 2.6 dB gain on 2 Meters and 6.3 dB gain on 440 MHz.
Perfect for dual band mobiles or HTs. Free BNC handheld adapter. Handles 300 Watts PEP.
MFJ's exclusive 27 1/2 inch stainless steel SlimLineRadiator minimizes wind vibration for less SWR flutter -- gives you longer range and better readability. Includes 15 feet of coax with PL-259 connector, heavy duty magnet mount with scratch resistant rubber guard.
Product is in production.
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KF7OMB Rating: 5/5 Oct 18, 2017 21:17 Send this review to a friend
great antenna  Time owned: more than 12 months
I have owned this antenna for about 6-3/4 years on 2 different vehicles, I would definitely buy it again, it is the first mobile ham antenna I owned after just getting my ticket, have had no problems driving on the freeway up to 80 mph at times without the magnet coming off the top of my car and my car isn't new its an old 92 toy. maybe I got lucky I don't know, I would recommend it to any old or new hams out there.
K1EHZ Rating: 4/5 Mar 5, 2017 06:15 Send this review to a friend
Good for the price  Time owned: more than 12 months
I have owned two of these for two years so here is an update. Since my last post both antennas experienced intermittent problems which were probably due to water leaks and poor whip contact.

SWR is great across both bands
Magnet is strong
Gain seems good

Both antennas leaked water into base
Whips were painted their full length which may have caused intermittent contact problems

I removed 1/2" of paint from the bottom of the whips to improve contact with the base and made sure the set screw was tight. I sealed the coax entry into both bases with non-corrosive black silicone gasket compound. I peeled the membrane off the bottom of one base, checked the connections, and filled the base with silicone potting material.

So far they are performing fine with these fixes. Maybe a 4 rating is a bit high given the work needed. But the excellent SWR and the advertised gain provided by the longer length whip are worth the effort.
KB3DBF Rating: 5/5 Nov 18, 2016 23:14 Send this review to a friend
Has been a great antenna for me  Time owned: more than 12 months
I've owned this antenna for more than 10 years. I have tried others, Diamond, Larsen etc. I may have just happened to get that one good one from MFJ, but this is the best performing dual band antenna I have and it continues in service on my work car. After all these years there is a bit of corrosion showing at the base of the magnet where it meets the whip, but I can't complain as it has been subjected to all kinds of weather and miles on the highway.
The Larsen dual band I own doesn't match the performance, even with NMO connection and all.
I'm getting ready to outfit my new Chevy with a radio and will order another MFJ 1729.
WB4JPG Rating: 2/5 Feb 25, 2016 08:41 Send this review to a friend
Needs help  Time owned: 6 to 12 months
The MFJ-1729 when it works, works OK. I'm on my 3 replacement in less than 10 months (Yes MFJ does honor there warranties and they ship the very same day), but it's a hassle. The main problem is the capacitor goes out in the base. Seems like a serious quality or design problems with the MFJ-1729.

The only other problem I have with the antenna is the wire they use to make the whip is thin gauge. Just driving down at highway speeds will create a slight bent at the base. And yes it does whistle and has a good deal of flutter. Just a slightly higher gauge will would solve those problems.
K7MWJ Rating: 2/5 Jul 26, 2015 11:19 Send this review to a friend
*sigh*  Time owned: 6 to 12 months
Update to previous review:

In late June, roughly 6 months after purchase, I noticed a lot of cutting out of signals on any frequency. Took the antenna off the truck and noticed the bottom "membrane" was coming off. Peeling it back a bit (oh man, is it thin!) I noticed rust where the coax is soldered to the capacitor and the coax was also rusted and had broken away from the the antenna mount.
When this was new, despite the whistle going down the freeway (see previous review), this thing worked pretty well. Would like to give this a 2.5 - OK but needs help!
Am disappointed in the quality if the underside of the base. Calling MFJ to see what kind of customer service they provide.
K1EHZ Rating: 5/5 Jun 8, 2015 14:28 Send this review to a friend
Works fine!  Time owned: 0 to 3 months
I recently installed a 2m FM radio in a 2013 Subaru Outback. I purchased the MFJ-1729 in case I wanted to move to a dual band radio in the future. It is centered just behind the first roof rack rail with the coax tie-wrapped to the rail over to the door behind the driver side door. The coax fits nicely down the front edge of the door opening with bits of coax seal keeping it tucked in front of the door gasket down to the bottom where the coax enters the car. The SWR is 1.0 on a fairly wide band around 146MHz, including the receive and transmit frequencies of the local repeater. I don't have any other mobile antenna experience for comparison, but the MFJ-1729 works fine on the road with 25 watts from the radio. Because it is tie-wrapped to the rail, I unscrew the antenna element when going into parking garages and car washes. The mag mount connector can be protected with a 3/8" vinyl tube cap. A 3/8"x24 cap nut also fits for more protection in a high pressure car wash.
KF2YD Rating: 1/5 Mar 31, 2012 10:30 Send this review to a friend
MFJ-1729 Review  Time owned: 0 to 3 months
I was really hesitant to buy another MFJ product because I had purchased so many MFJ products in the past that were defective because of poor quality control. The reviews sounded so good that I decided to take another chance and buy one. When I opened up the package I noticed that the rubber protective piece that was on the bottom of the mag mount was deformed and was coming loose! This was very upsetting so I called HRO and explained to them that I had a received another defective product from MFJ. They were very nice and told me that I could return the defective MFJ antenna and that they would send me another replacement. After seriously thinking about all of the defective MFJ products that I had received in the past I finally came to the conclusion that it would be better to ask for a refund and spend a little more and buy a much better quality built antenna from a different manufacturer. Very dissatisfied!
KD8EZU Rating: 5/5 Dec 20, 2011 08:54 Send this review to a friend
MFJ can make a good product  Time owned: 0 to 3 months
Reading most reveiws about MFJ, one would think that anything that comes out of Starksville , Miss would be pure junk. That is pure BS.

Bought this antenna from HRO and it arrived in a super nice and HUGE box to protect it ( thanks HRO ) Very nice packaging if one was looking at it on a display board. I coated the plastic ( rubber?) base and O-ring seal ( goes around the screw on fitting for ant,)with 3M Silicone paste to protect it and also about 1 foot of the coax from the base to also protect that from the elements\UV.

VERY strong magnet that did not move at all and my car gets up to 90 MPH at times on isolated roads. T

The whip did not flutter or sway in driving and I like that. Fairly flat SWR ( 1.3-1.5 ) on 2-meters . THe addition of BNC adapter is just great as the primary use for this antenna is with my trusty Radio Shack HTX-202 HT , battery powered . I noticed that I could immediately HEAR stations that I could not before. Hit the Blumont, VA repeater, while 50 miles away near Frederick , MD on 5 watts or less from the HT. A real improvement that was a pleasant surprise.

MFJ does have quality control issue's but they're American made and affordable.

I'd recommend the antenna, spray\apply rubber parts with either 3M Silione Paste or good ole' Amour All to protect against UV .

Why pay more?
KJ4WHO Rating: 4/5 Dec 9, 2011 11:10 Send this review to a friend
Whistles!  Time owned: 0 to 3 months
Bought the antenna and mounted it on the roof of my 4 door pickup. Driving down the road I noticed that at 40 mph and above there was a very high pitched noise coming from the area of the antenna. It was really annoying. Tried changing the position but nothing helped. Finally tried wrapping the coil section in electrical tape. Voila! Problem solved. Had to drop a point for this.

Oh, it's a great antenna I was able to hit repeaters from 90 miles away with a HT in the truck. Really impressive performance.

I'll update as I have more time with it. I would recommend it, especially for the cost. But be aware it might whistle for you too.
WA2B Rating: 3/5 Aug 4, 2011 05:53 Send this review to a friend
Works Well But....  Time owned: more than 12 months
The MfJ-1729 works well but be careful of the center pin on the PL-259. When parking my car in NYC I remove my radio and antenna. Taking the antenna on and off from the back of the radio is difficult and eventually the center pin weakens.
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