This is a key component of my poor man's mobile. I'm posting this same review for all the other accessories of the build, but not for the radio which I love and reviewed separately. Here's the build:Regarding each part. Love the radio.The antenna is good and comes nicely packaged with all the needed parts. What is really nice is that the antenna, base, and feed lines are all separate pieces. Mix and match however you want. The base magnet is strong. The antenna and feed lines work well. The long feed line is about 10' which is plenty for me.The 12V adapter is also OK. It's a tight fit, but does fit. It's also pretty cheap - so modify it as you will to change connectors, move the input line, etc. Personally, I think feeding the wire gets in the way because it enters at the bottom of the radio. Such is life. Maybe I'll modify this thing to use a dedicated circuit instead of a cigarette lighter socket - and put on a longer power cord while I'm at it.The speaker thing. -hate- This thing almost kills the build. The first time I contacted someone they reported weak audio. I pulled the hand set and spoke directly into the radio and my audio improved. Also, the wire coil is too short and stiff. Wayyyy to short and stiff. You end up pulling the radio around by the wire. You might as well just hold the radio.But.... It turns out that wrapping the power cord of the 12V adapter and the antenna feed line is an OK solution.Anyways, this was a fun experiment but in the end it seems better to just use a handheld as a handheld and to get a real mobile for the car.Regardless, five stars for being a nice antenna kit

I've used many different magnetic Mount antennas over the years for many different services, and this antenna has been the most impressive of all in terms of tunability and stability. For the 2 m and 70 cm ham bands, even at high power, the SWR is virtually flat. For UHF GMRS my SWR is around 1.3-1.5:1. Impressive!Good quality RG-58U coax, far better quality than the type of coax supplied by other manufacturers, keep signal loss to a minimum. The magnetic base is coated with a rubberized material and is extraordinarily strong, make certain that the surface you intend on placing it on is not made from aluminum. I've also used this antenna place on a large sheet pan for fixed base use, and the SWR is also very usable like that.Because I am extremely fussy about putting things on the surface of my paint, I would recommend that prior to placing the antenna, wipe off the surface of the paint with a wet clean cloth several times and then dry, and similarly do the same to the bottom of the antenna before placing it. If you remove the antenna, I place it in a clean plastic bag so there's no chance that the bottom of the antenna will pick up on magnetic particulate which could be transferred to the pain finish. This is a quality product that will deliver to the discriminating radio operator, I recommend it with confidence.

Works great

Great little antenna, really impressed me with how far I’m able to transmit and receive on such a small antenna. It’s not something super amazing, it just works well.

I have been running an NMO-72 on 2 vehicles for a few years now. It's a rugged and affordable little antenna that gets the signal out on 2m and 70cm. I like the fact that it's rigid enough to stay vertical at highway speeds.

Amazon clumps all these Nagoya reviews together, in spite of covering different products. I happen to own a couple of them. This first bit is in regard to the RB-50 NMO magnet mount:This thing is enormous. The 5" magnet really wants to stay in place. I use it with a half-wave VHF radiator that has a thick loading coil at the base, and it works beautifully, The bottom of the magnet has a heavy rubber rig around the lip, and a felt-like pad in the center to protect your car's finish. Honestly, I'd prefer an all-rubber coating, since I leave it on my car in all weather. I'll see how it holds up. I park indoors, so I'm not too worried about the felt. The mount includes a threaded rain cap, but if you're concerned with moisture, why not remove the entire mount and toss it in the car? The attached cable is slightly longer than the UT-72's, but not long enough to be annoyingly lossy. I find the extra couple of feet useful.The following is in regards to the UT-72 antenna:I own two of these antennas. The original was intended to live atop my Subaru Crosstrek, but I had such a positive experience initially testing it with my base rig, that I opted to leave it there and order another for the car. My home station is based in a small office, in a rental apartment with no balcony. My antenna options are thus _very_ limited; use a UT-72 and some DIY Yagis for VHF and UHF ops, and a random-wire/balun/choke for HF and shortwave listening. Everything is set up indoors. With some luck, I'll eventually work out a safe and discreet means of getting the random-wire out a window. I digress.The UT-72 requires a good ground plane, as mag mounts do. The more conductive surface area underneath the base, the lower SWR and better performance you'll get. My indoor unit is stuck to a large window A/C (of course my landlord has the compressors mounted entirely in our apartments, leaving nothing outside to work with), and my mobile unit is centered behind the sunroof. If you just need a temporary hack, sticking the magnet to an overturned cookie sheet is better than nothing. Mounted as intended, the SWR lives up to vendor claims. I'd be happy to take measurements for a particular frequency/frequencies and post photos of my meter. You can reach me at the address in my profile.In terms of workmanship, this is a rugged antenna. The base is huge—there's no way it's going anywhere at highway speed—and coated with a heavy layer of protective rubber. The thick coil at the base does double-duty, improving broadband coverage and acting as a protective spring. I take every precaution driving places with a low overhead clearance, but I'm confident in the UT-72s ability to flex upon bumping into things, without sustaining damage. The included cable is long enough to run back through my tailgate and up to my mobile rig, and the SO-239 to SMA-F adapter is a nice bonus that facilitates connection to the majority of HTs.If you're shopping for a magmount, I highly recommend this antenna.73

The antenna had different thread spacing and would not attach to my NMO antenna mount. Disappointing.

Works well - allows me to transmit and receive on VHF, 220 and UHF up to 100KM or more.

Great antenna that can be folded down to enter your garage. I like the range I get with this antenna. Much better than my 18 inch one that this replaced.

This was a great addition to my current VHF set up on my Sport Trac, For when I want to use my Baofeng UV5R

Great antenna 📶, huge performance increase was immediately noticed. I can hit a DMR repeater from the far opposite end of the city (20 km) where I used to have to be closer than 10km while I was mobile in the vehicle using a handheld. I wish the cable was about 3 feet longer though.