RadioRanked verdict
HYS
HYS Dual-Band Magnetic Mount Mobile
A solid, honestly-labeled mag mount for the right vehicle. Check for a metal roof before buying; without one, no mag mount in this category will perform as modeled.
Proprietary RR score
How we scored it
Performance is derived from the antenna's length in wavelengths on each band it covers, not from the advertised gain. How we score →
Length versus wavelength
What 435 mm Buys You
An antenna radiates according to its length measured in wavelengths, not according to the number on the packaging. Here is where this one lands on each band it covers.
| Band | Wavelength | This antenna | Works out as |
|---|---|---|---|
| VHF146 MHz | 2053 mm | 0.21 λ | quarter wave |
| UHF435 MHz | 689 mm | 0.63 λ | 5/8 wave |
Decision helper
Is this antenna right for you?
Yes, if you're…
- ✓Vehicles with a full metal roof or trunk
- ✓50W-and-under mobile radios
Skip it, if you're…
- ✕Fiberglass, aluminum, or composite-bodied vehicles
- ✕Radios running more than 50W
Tradeoffs
The good and the bad
What we like
- HYS is upfront that a metal ground plane is required, not buried in fine print
- Gain claims are conservative relative to the modeled length
- Strong proportions for 70cm performance
- Individually tested per the listing
What we don't
- Will not work as advertised without a metal roof or panel under the mount
- 50W ceiling rules out higher-power mobile radios
- 17 inches is long enough to need care in low-clearance parking
Ready to buy?
Fast Prime shipping, no-questions-asked returns through Amazon.
Overview
The HYS dual-band mag mount is a 17.1-inch stainless whip on a 3.5-inch magnetic base, rated for 50 watts, with a PL-259 connector for any SO-239-fed mobile radio. HYS is explicit that the magnetic base needs a metal ground plane to work, which is honest labeling most sellers skip.
At 0.21 wavelengths on 2m and 0.63 on 70cm, near the 5/8-wave sweet spot, HYS's claimed 2.15/3.5 dBi is actually a little conservative next to what our model credits the length with. Just do not skip the fine print: without a metal roof or a large enough metal panel under the base, none of this performs as modeled, magnetic or not.
Specifications
| Frequency bands | VHF, UHF |
| Gain | 3.50 dBi |
| Connector | PL-259 |
| Length | 435 mm |
| Antenna type | mobile |
| Flexible | No |
| color | Black |
| unitCount | 1 |
Key Features
- Frequency coverage: 144/430MHz operation across 136-174MHz and 400-470MHz for VHF/UHF mobile radio use. Maximum Power Input-watts:50 W; Gain: 2.15dBi/3.5dBi. Omni-Directional, 43.5cm(17.12inches) Stainless Steel Antenna.
- PL-259 connection: 13ft RG58 cable with PL259(UHF male) plug fits radios or mounts using a standard SO-239 UHF female jack. For SO239 VHF&UHF mobile radio, Radio Scanner, Ham Radio Transceiver, Handheld & Amateur Radio Equipment.
- Magnetic mounting: 3.5in base holds to vehicle roofs, trunks or steel plates; a metal ground plane is required. so you can set this up on a file cabinet, window frame, or vehicle roof in seconds. No drilling, no tuning, no tools. Just place the base, plug in the 13 ft RG58 cable, and you are on the air.
- Signal-ready design: Built to last with a 17.12in stainless steel whip that shrugs off rain, sun, and road grime. Rated for up to 50 watts with 2.15 dBi gain on VHF and 3.5 dBi on UHF, the omni-directional pattern pulls in signals from every direction, so you hear weak repeaters and distant stations clearly, day after day.
- Compatibility note: Compatible with any radio or scanner that uses a standard SO239 antenna connector, compatible with Motorola, Kenwood, Icom, Vertex, HYT, Hytera, Baofeng, Midland and Uniden radios. Also works with handhelds and other amateur transceivers. Check your radio's antenna jack before ordering to make sure it matches.