Midland MXTA51 MicroMobile 2.1dB NMO Replacement Antenna Kit vs Retevis RT97S Portable GMRS Repeater
Head-to-head spec comparison to help you pick the right kit component for your needs.
Midland
$55
Retevis
$340
Verdict
It's a Tie
The Midland MXTA51 MicroMobile 2.1dB NMO Replacement Antenna Kit and Retevis RT97S Portable GMRS Repeater are evenly matched. Your choice depends on which features matter most to you.
Spec-by-Spec Comparison
| Spec | Midland MXTA51 MicroMobile 2.1dB NMO Replacement Antenna Kit | Retevis RT97S Portable GMRS Repeater |
|---|---|---|
| Kit Role | Magnetic-mount NMO antenna upgrade for MXT575 — improves range by eliminating interior-mount losses | GMRS repeater hub |
| Category | antenna | gmrs-repeater |
| Renter Install | vehicle mount | permission required |
| Building Fit | vehicle / RV | licensed RF relay |
| Max Power | N/A | 5 W |
| Channels | N/A | 8 |
| Clear LOS Range | N/A | N/A |
| Coverage | N/A | N/A |
| Battery Life | N/A | N/A |
| Water Resistant | Yes | No |
| SOS Button | No | No |
| Weather Alerts | No | No |
| License Required | Yes | Yes |
| Subscription Required | No | No |
| Subscription/mo | 0 $ | 0 $ |
| Price | $55 | $340 |
| Rating | 8.0/10 | 8.2/10 |
| Buy on Amazon |
Pros & Cons
Midland MXTA51 MicroMobile 2.1dB NMO Replacement Antenna Kit
Pros
- Official Midland replacement kit — designed specifically for MXT500 and MXT575
- Strong 3.5-inch magnetic base with rubber boot stays put on roof or hood
- 6-meter RG-58A/U coax cable gives plenty of routing flexibility in a van or RV
- 2.1dB unity gain antenna restores factory-spec range after trail damage
- Includes metallic plate (MXTA38) for non-ferrous roof surfaces
Cons
- 2.1dB gain is modest — serious operators may want the MXAT01VP (7.5dB, $195) for max range
- Magnetic mount is not a permanent install; may shift at highway speeds without MXATMT1 bracket
- ASIN unverifiable via Amazon (bot-walled) — sold primarily through Midland direct and specialty radio retailers
Retevis RT97S Portable GMRS Repeater
Pros
- Adds a real RF relay layer no handheld can provide
- Purpose-built GMRS repeater with built-in duplexer
- Portable AC/DC format can support temporary building or neighborhood drills
- Pairs with repeater-capable handhelds like the BTECH GMRS-V2
- Best fit for licensed building captains and prepared neighborhood radio leads
Cons
- Not a renter gadget; needs permission, antenna placement, and power planning
- No organization-wide license shortcut; unrelated GMRS operators still need their own licenses
- Shared repeater use needs a responsible licensed operator, call-sign discipline, and written operating rules
- Bad antenna placement inside concrete can erase the benefit
- More complex and easier to misuse than simple handheld radios
Our Verdicts
Midland MXTA51 MicroMobile 2.1dB NMO Replacement Antenna Kit
The MXTA51 is the clean, hassle-free antenna upgrade for any MXT575 install — the factory magnetic-mount NMO kit means no drilling, no adapters, and guaranteed radio compatibility. For serious range in flat terrain, upgrade to the MXAT01VP fiberglass antenna ($195); the MXTA51 is the right call for most RV users who want plug-and-play performance.
Retevis RT97S Portable GMRS Repeater
The RT97S is the advanced GMRS product OutageKit was missing: a repeater for a licensed building radio lead trying to make floor-to-lobby or neighborhood RF coverage more reliable. It is not for casual renters, condo-board blanket use, or internet-linked networks, and it does not bypass GMRS licensing or station-identification rules. It belongs only when a responsible licensed operator can place the antenna, power the unit, and run a written channel plan.
Midland MXTA51 MicroMobile 2.1dB NMO Replacement Antenna Kit
$55