Retevis RT97L 25W GMRS Waterproof Repeater with Speaker Mic

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  • 📡 Upgraded Duplexer, Extended Range (25W Power)
  • ⚡ Plug & Play Setup
  • ☔ All-Weather Durability
  • 🏆 Best Selling RT97L Repeater Kit


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Description

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FAQ

1. What is the difference between 5W and 25W?

The difference in power can be significant. For example, using 5W of power, communication over a long distance might result in weak or no signal. However, with 25W of power, the range can greatly improve, allowing for clearer and more reliable communication over much longer distances.

While power is crucial, factors like antenna height also play an important role. In situations where elevation isn't favorable, higher power can be a big help in extending communication range.

2. Is the actual output power really 25W?

The factory output is between 22W-25W. However, when operating with a duplexer, there may be power loss, reducing output to around 15W-22W, depending on the quality, thickness, and length of the feeder cable. 

3. What’s the GMRS Repeater Frequency Range (TX and RX)?

For users operating with GMRS, the frequency range of the RT97L is:

  • TX (Transmit): 462.550 - 462.725 MHz
  • RX (Receive): 467.550 - 467.725 MHz

This range allows for effective communication and operation in the designated GMRS frequencies, which are crucial for users who need clear, uninterrupted signals.

4. How Does Using a Raspberry Pi Enhance RT97L’s Functionality?

The RT97L portable gmrs repeater is designed with flexibility in mind. By connecting the repeater to a Raspberry Pi via its DB-9 interface, users can expand the repeater's functions. This allows for easy programming and the ability to customize the repeater to fit specific needs, whether you’re operating in a particular area, enhancing security, or fine-tuning performance.

5. What Is Amp Absorption in TX and RX?

  • Receive Mode Absorption: 180mA
  • Transmit Mode Absorption: 5.5A

6. How is the RT97L Waterproof Even if the Doors Are Uncovered?

The RT97L gmrs mobile repeater is rated IP66 waterproof, meaning it can withstand powerful jets of water from all directions. This rating ensures that it performs well even in harsh weather or environments with heavy water flow. However, to ensure optimal performance and longevity, it's always a good idea to install the repeater in a protected location, especially in areas with extreme weather conditions.

7. Does the RT97L Have an Internal Duplexer?

Yes, the RT97L portable repeater comes equipped with an internal duplexer, which is essential for enabling the repeater to work efficiently with an antenna. The duplexer allows the device to handle both transmit and receive signals simultaneously without interference.

8. How Many Channels Does the RT97L Have? And What Does It Mean?

The RT97L is capable of storing 16 different channels, which means it can quickly switch between up to 16 communication frequencies.

9. What is the RT97L's Duty Cycle?

The duty cycle for RT97L repeater is 100%.

    10. What is the DB-9 Female Connector used for?

    RT97S base station comes with a DB-9 port, which can be directly connected to the included speaker mic and is compatible with Raspberry Pi.

    11. Does this repeater work with your handheld FRS units? Or just the GMRS radios?

    Because of the limitations on FRS by the FCC, this repeater can be only ued for GMRS radio, no mater handheld GMRS radios or Mobile GMRS radios.

    12. Is this repeater compatible with other manufacturers handheld GMRs radios that are repeater capable? For example BTECH, Radioddity, Midland?

    Yes, the RT97L repeater is compatible with GMRS handheld radios that are repeater capable.


    Technical Specifications Comparison

    Parameter RT97 RT97S RT97L
    Waterproof Rating / / IP66
    Frequency Range TX: 462MHz
    RX: 467MHz
    TX: 462.550-462.725 MHz
    RX: 467.850-467.725 MHz
    462-467 MHz (GMRS)
    Channel Capacity 16CH 8 GMRS Repeater Channels 16 channels
    Channel Spacing ±12.5kHz (Narrow)
    ±25kHz (Wide)
    ±12.5kHz (Narrow)
    ±25kHz (Wide)
    12.5/25kHz
    Operating Voltage DC 12V-24V DC 12V-24V DC 15V/10A (AC 100-240V input)
    Operating Temperature -30°C to +60°C -30°C to +60°C (-22°F to 140°F) -30°C to +60°C
    Frequency Stability ±2.5ppm ±2.5ppm ±2.5ppm
    Antenna Impedance 50 Ω 50 Ω 50 Ω
    Dimensions 260×210×70 mm 260×210×70 mm (10.25×8.3×2.8 in) 285×185×68 mm (±5 mm)
    Weight 1.66 kg 1.66 kg (3.7 lbs) 3.5 kg (±0.5 kg)
    Modulation F3E FSE FM
    Spurious Emission ≤ -60dB ≤ -60dB ≤ -13dBm
    Max Frequency Deviation Wide: ±5kHz
    Narrow: ±2.5kHz
    Wide: ±5kHz
    Narrow: ±2.5kHz
    Wide: ±5kHz
    Narrow: ±2.5kHz
    Audio Distortion ≤ 5% ≤ 5% ≤ 5%
    FM Noise Wide: ≈45dB
    Narrow: ≈40dB
    Wide: ×45dB
    Narrow: ×40dB
    Wide: ≤45dB
    Narrow: ≤40dB
    Rx Sensitivity (12dB SINAD) 0.2µV (Wide)
    0.25µV (Narrow)
    0.2µV (Wide)
    0.25µV (Narrow)
    0.35µV
    Squelch Sensitivity 0.15µV (Wide)
    0.2µV (Narrow)
    0.15µV (Wide)
    0.2µV (Narrow)
    0.2µV / 0.15µV
    Adjacent Channel Selectivity ≥70dB (Wide)
    ≥65dB (Narrow)
    ≥70dB (Wide)
    ≥65dB (Narrow)
    ≥65dB / ≥70dB
    Intermodulation Rejection ≥55dB ≥55dB ≥60dB
    Spurious Rejection ≥55dB ≥55dB ≥60dB
    Image Rejection ≥55dB ≥55dB ≥60dB
    Duplexer Isolation / / >75dB
    Transmit Current / / ≤6A

    Spec

    Model RT97L
    Output Power Factory output: 22-25W
    After passing through the duplexer: 15-22W
    Frequency Range
    462.550-462.725 MHz (TX)
    467.550-467.725 MHz (RX)
    Channel Capacity
    16 CH
    Bandwidth
    20KHZ/12.5KHZ
    Audio Distortion
    ≤5%
    Frequency Stability
    ±2.5ppm
    Maximum Frequency Deviation
    4.5KHZ/2.5KHZ
    Modulation Mode
    FM
    Adjacent Channel Selectivity
    ≥65dB
    Transmit Current
    ≤6A
    Operating Voltage
    15V DC
    Antenna Impedance
    50Ω
    Operating Temperature
    -30°C~+60°C
    Dimensions
    285x185x68mm
    Weight
    3563g
    Note: Power will further attenuate after passing through the feeder. The degree of attenuation depends on the diameter, length, and material of the feeder. Please select an appropriate feeder according to your specific situation.

    Features

    ● 16 Channels

    ● Channel Lock

    ● Scan Channel

    ● Volume Set

    ● Modem Set

    ● Squelch Level

    ● Repeater Delay

    ● High (25W) / Low (5W) Power Switching

    ● Backled Adjustment

    ● Low Temperature Mode

    ● 50 CTCSS codes/210 DCS codes

    ● Init Option

    ● Software Version

    Reviews

    Customer Reviews

    Average Rating

    5
    Based on 18 reviews

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    All Reviews

    Its been on air about a week. So far, about a 15 mile radius in the hilly, tree filled terrain of Western PA. Getting great reports from those I've talked with. Using the MA09 antenna around 25'. It will go up another 15 feet soon, which should drastically improve coverage.

    This repeater Retevis RT97L — and any type (UHF, VHF, GMRS, DMR) — would be great for my city, Bucharest, Romania. Unfortunately, there aren’t many active radio clubs here, and most old users focus only on HF because of the lack of repeaters, chasing DX and collecting trophies. That doesn't really reflect the true spirit of amateur radio, which should be about community and shared learning — not just individualism.

    I just received the RT97L repeater today and can't wait to try this. It's much smaller than I thought it would be, which is a good thing!

    I initially had the first generation RT97 that worked flawlessly for years but went with the RT97S when it came out so I could link it nationwide. I have had great results with almost all of the Retevis products I have owned over the years. This being a new product, there was an issue with the programming software that Retevis has fixed. Retevis may be a bit difficult to deal with due to the time difference and language, but they have always solved any of the minor issues I have had with their new products.

    I have in located at the top of a hill, in a fence line at the highest point on my property. It is powered by a marine deep cycle battery that is charged by solar panels.

    This repeater replaced an RT97S that has been in service for a few years. No issues with it, other than the output power after the duplexer was about 4 watts. The new RT97L transmits at 21 watts (verified) after the duplexer. It has added about 10 miles onto my range and works in low spots or valleys that it didn't before.

    Wonderful repeater. Getting 22 watts to the antenna feed line. Got A+ Tech support!

    I first had the transmit delay issue which it wouldn't transmit after keying a radio a couple of times, sent an email to Retevis and the next morning I had the instructions on how to download the firmware update and software for the update. To be fair my repeater's output is 30.1 Watts with the power supply which is more than advertised and it's working great after the update.

    So far so good . Haven't updated firmware,but no issues. Huge improvement in range from the 10 watt version.

    After sale customer service was FANTASTIC. Two thumbs up to the Retevis after purchase service and support. I am impressed!!!!

    I live in a valley about 20 miles wide surrounded by high cliffs. By placing my antenna high in the valley floor I can clearly make and receive messages 20 miles away. Current draw in standby is amazingly low which easy works with a small 20 aH liFpo4 battery and 100 watt solar collector.

    I am enjoying my new RT97L very much. I had some problems with updating the firmware and programming but it was my fault. I am a Mac Book user and had to use a Windows base computer for accomplish these tasks. My problem with Windows. I had to learn a little about the Windows system. All in all it was a fun exercise, just took a little time. Now that I know how it is a easy and quick process.

    Seems to have clearer audio than the earlier model....nice GMRS repeaters

    Just unboxed it, connected it to a KB9VBR copper J-Pole 35' above ground with a 1.01:1 SWR on 75' of LMR 400 coax. The SWR/Power meter shows it transmitting at 20.3 watts. It will replace a fully operational linked RT97S that has been in service for a few years and has worked flawlessly. The RT97S replaced a first generation RT97 that also worked flawlessly for years. This is a solar powered remote setup so my main concern is how the additional transmit power will impact battery life during the winter months when the solar charging at its minimum. The RT97S transmitted at 4 watts. Retevis said this RT97L draws 6 amps DC with a 100% duty cycle while transmitting on high power. If that is true, I should not have a problem. This one is larger and heavier than the first two generations. All are well built and rugged. So far, the only issue is that I need to change the privacy tones, but the software has a password that was not provided. If anyone knows what that is, I would greatly appreciate you sharing it. I will do another review after I have this placed in the remote location. It is on a hilltop and with the 4 watts the RT97S transmits at, has a 30 mile range, unless you are in a valley.

    We have access to grain elevators with about 150 feet of elevation, which should help maximize the range of our repeater. The RT97S’s performance in both rural and elevated locations makes it an ideal candidate for our setup.

    Our goal is to create a reliable communication network for locals, and the RT97L’s GMRS capabilities, combined with its ease of use and installation, make it a strong contender for the job. Looking forward to seeing how it performs!

    Utterly fantastic! Long range and clear! If I ever need more, I will get these ones again.

    We're planning to set up a community GMRS repeater in South Central Kansas, with the potential to expand later. The goal is to provide reliable communication in case of grid, cellular, or internet outages. The Retevis RT97L seems like a promising option for this project, given its 25W power output and durability.

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