Midland MXTA51 MicroMobile 2.1dB NMO Replacement Antenna Kit vs Midland WR400 Deluxe NOAA Weather Alert Radio with SAME Localized Programming, 80+ Emergency Voice & Flashing Alerts, Alarm Clock/AM-FM Radio
Head-to-head spec comparison to help you pick the right kit component for your needs.

Midland
$55

Midland
$100
Verdict
It's a Tie
The Midland MXTA51 MicroMobile 2.1dB NMO Replacement Antenna Kit and Midland WR400 Deluxe NOAA Weather Alert Radio with SAME Localized Programming, 80+ Emergency Voice & Flashing Alerts, Alarm Clock/AM-FM Radio 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 | Midland WR400 Deluxe NOAA Weather Alert Radio with SAME Localized Programming, 80+ Emergency Voice & Flashing Alerts, Alarm Clock/AM-FM Radio |
|---|---|---|
| Kit Role | Magnetic-mount NMO antenna upgrade for MXT575 — improves range by eliminating interior-mount losses | Plug-in home weather and civil emergency alert monitor; self-alerts 24/7 with no action required from user |
| Category | antenna | weather-radio |
| Renter Install | vehicle mount | plug-in |
| Building Fit | vehicle / RV | any room |
| Max Power | N/A | N/A |
| Channels | N/A | 7 |
| 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 | Yes |
| License Required | Yes | No |
| Subscription Required | No | No |
| Subscription/mo | 0 $ | 0 $ |
| Price | $55 | $100 |
| Rating | 8.0/10 | 8.0/10 |
| 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
Midland WR400 Deluxe NOAA Weather Alert Radio with SAME Localized Programming, 80+ Emergency Voice & Flashing Alerts, Alarm Clock/AM-FM Radio
Pros
- Plug-in with 4-AA battery backup: continues alerting through a power outage — exactly the moment it is needed most
- SAME (Specific Area Message Encoding) county-level programming filters out irrelevant state-wide alerts; only the user's county wakes the device
- Three alert modalities — 85 dB siren, synthesized voice announcement, and tri-color flashing LED — accessible to elderly users with hearing or vision impairment
- 80+ alert types (NWS weather + civil FEMA alerts) with no subscription, no app, no internet required
- Dual alarm clock + AM/FM radio: replaces bedside radio so it stays plugged in and relevant 24/7
Cons
- Programming the SAME county codes requires reading the manual once — not truly zero-setup out of the box
- Siren at 85 dB can startle; elderly users with heart conditions may want to lower the alarm volume in settings
- No battery-only portable mode beyond backup AA cells; not designed for travel
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.
Midland WR400 Deluxe NOAA Weather Alert Radio with SAME Localized Programming, 80+ Emergency Voice & Flashing Alerts, Alarm Clock/AM-FM Radio
The WR400 is the correct choice for a caregiver kit because it requires no new habits: plug it in, program the home county once, and it wakes the household with voice announcements and flashing lights 24/7 — even during a power outage via AA backup. For an elderly parent who cannot monitor a smartphone or app during a night storm, a dedicated plug-in alert device that shouts and flashes is the most reliable last line of warning.
Midland MXTA51 MicroMobile 2.1dB NMO Replacement Antenna Kit
$55
Midland WR400 Deluxe NOAA Weather Alert Radio with SAME Localized Programming, 80+ Emergency Voice & Flashing Alerts, Alarm Clock/AM-FM Radio
$100