Retevis RT97L Repeater Review: Real-World Testing for GMRS Enthusiasts

If you're a GMRS enthusiast looking for an in-depth review of the Retevis RT97L Repeater, this article provides insights into its exceptional 25W power, extended range, and rugged design for both mobile and fixed installations. As a 25W GMRS repeater, it offers a significant upgrade over previous models, including the RT97S, with improved power output, range, and versatility. In this review, we'll walk through real-world testing to show how the RT97L performs in various setups, from remote solar-powered installations to rugged field deployments.

Retevis RT97L Repeater Performance: Hands-On Setup and Testing

After unboxing the Retevis RT97L, the user deployed it in a demanding solar-powered remote setup previously using an RT97S. Mounted with a KB9VBR copper J-Pole antenna at 35' elevation and 75' of LMR 400 coax (achieving a near-perfect 1.01:1 SWR), this RT97L GMRS Portable Repeater transmitted at 20.3 watts—a dramatic leap from the RT97S’s 4-watt output. Despite winter solar charging challenges, Retevis’ claim of a 6-amp DC draw at 100% duty cycle suggests manageable battery drain for off-grid users.

Retevis RT97L vs Previous Models: Key Upgrades & Features

Power Output & Range Expansion

The RT97L repeater isn’t just incremental—it’s transformative. While the RT97S delivered reliable 4-watt performance, the RT97L’s 20.3-watt transmission extends coverage to 30+ miles in open terrain (tested on a hilltop). Valleys still pose challenges, but the added power ensures stronger signal penetration. Paired with low-loss LMR 400 coax and a tuned J-Pole antenna, this repeater maximizes efficiency with minimal SWR reflection.

Grab the Retevis 25watt RT97L GMRS Repeater

Solar-Powered Reliability Tested

In this Retevis RT97L Repeater Review, energy efficiency plays a crucial role for remote setups. The RT97L's higher power output raises concerns about winter battery life, which we’ll address through real-world testing. Retevis’ 6-amp draw specification (vs. the RT97S’s lower consumption) requires careful solar system sizing, but real-world testing will confirm if the balance between power and efficiency holds. Pro tip: Pair with deep-cycle batteries and a 200W+ solar array for winter resilience.

RT97L GMRS Mobile Repeater: Rugged Design Meets Portability

Build Quality & Field Readiness

Notably larger and heavier than the RT97S, the RT97L retains Retevis’ signature ruggedness. The user emphasizes its “well-built and rugged” construction, critical for permanent outdoor installations. Despite the bulk, it remains portable enough for mobile deployments—ideal for emergency comms or temporary repeater sites.

Antenna Compatibility & SWR Optimization

The reviewer’s KB9VBR J-Pole + LMR 400 setup proves the RT97L thrives with professional-grade hardware. The 1.01:1 SWR ensures 98%+ power efficiency, minimizing losses over the 75’ coax run. This flexibility makes the RT97L GMRS Mobile Repeater adaptable to both fixed and vehicle-mounted configurations.

User Experience: Upgrading from RT97S to RT97L

Why Upgrade? Power vs. Practicality

Though the RT97S worked “flawlessly,” the RT97L’s 5x power boost addresses range limitations. The trade-off? Slightly higher energy demands. For users needing extended coverage (e.g., mountainous regions), the upgrade is justified. Retevis’ backward compatibility ensures seamless integration with existing GMRS networks.

Winter Battery Life: A Calculated Risk

The user’s solar setup faces its toughest test in winter. At 6 amps/hour, a 100Ah battery would last ~16 hours of continuous transmission—far beyond typical GMRS use. For intermittent operation (e.g., 10% duty cycle), daily consumption drops to 14.4Ah, manageable even with reduced solar input. Always monitor with a quality SWR/power meter like the tester used here.

Conclusion: Who Needs the Retevis RT97L?

This Retevis RT97L Repeater Review confirms it’s a powerhouse for serious GMRS operators. If you need:

• 30+ mile range in open terrain
• Solar/mobile compatibility with 6-amp efficiency
• Bulletproof construction for permanent installations

After thorough testing, this Retevis RT97L Repeater Review shows that the RT97L stands out with its powerful 25W transmission, extended range, and rugged design. It's a perfect choice for GMRS users seeking reliable long-distance communication.