The AMP‑U25 will also work with any handheld radio that outputs 2W–6W with the appropriate connecting RF cable. The AMP‑U25 includes the SMA Female connecting cable to hook right up to BTECH and BaoFeng radios right out of the box.
Easily install in a home or mobile environment; the AMP‑U25 measures just 5.5" x 4.5" x 1.4" and weighs just 1.8lb making it the perfect companion for field operation without adding a lot of weight.
Cleaner Output Signal
Harmonic filters on the input allow the amplifier to transmit a cleaner output signal. The amplifier is so well engineered that in most circumstances it transmits a cleaner, purer signal then it receives from your handheld radio
The AMP-U25 includes voltage spike suppression, over-temperature protection, RF sensing, and automatic power control (APC) to protect it under adverse operating conditions.
Three Primary Modes of Amplification
Connect to the antenna output of the handheld transceiver to the RF-IN connector on the rear panel of the amplifier with the Radio to Amplifier RF cable. Transmit and receive right on the Handheld radio - while your output signal is amplified.
Connect to the antenna output of the handheld transceiver to the RF-IN connector on the rear panel of the amplifier with the Radio to Amplifier RF cable. Connect a speaker microphone, headset, or compatible accessory to the radio. Transmit and receive right on the accessory connected to the Handheld radio - while your output signal is amplified.
Connect the speaker microphone to the MIC jack on the front panel of the amplifier. Connect to the antenna output of the handheld transceiver to the RF IN connector on the rear panel of the amplifier with the Radio toAmplifier RF cable. Connect the accessory port of your radio to the CONTROL jack on the front panel of the amplifier using the Amplifier Control Cable. Transmit and receive using the speaker microphone on the amplifier while incoming audio is relayed through the loud amplifier speaker.
|Amplified Frequency Range||136 – 174 MHz||400 – 480 MHz||136 – 174 MHz||400 – 480 MHz|
|Input RF power||2 - 6W (±10%)||2 - 6W (±10%)||2 - 6W (±10%)||2 - 6W (±10%)|
|Output RF power||20 - 40W||20 - 40W||20 - 40W||20 - 40W|
|Analog FM, P25 Phase 1, C4FM (System Fusion), NXDN, IDAS, dPMR, and MPT1327 modes||✔||✔||✔||✔|
|DMR and P25 Phase 2 modes||✔||✔|
|Out-of-Band Transmit (Pass-through the HT's power to the external antenna while amp is powered off)||✔||✔|
|External Antenna Connector||SO-239||SO-239||SO-239||SO-239|
- Frequency range: AMP-U25 : 400 – 480 MHz
- Power supply: 13.8 VDC (±15%), 5.5 A maximum
- Input RF power: 2 - 6W (±10%)
- Output RF power: 20 - 40W
- Size: 5.5-in D x 4.5-in. W x 1.4-in. H (40 mm D x 115 mm W x 36 mm H)
- Net weight: 1.8 lbs. (800 g)
The BTECH AMP-25 Series is designed to work with any BaoFeng or BTECH handheld transceivers, but it will also work with any handheld radio that outputs 2 W – 6 W with the appropriate cable. With the included Radio to Amplifier RF Cable, the amplifier will also work with Wouxun transceivers, some TYT transceivers, and some Kenwood transceivers. If the supplied cables do not connect to your radio, you will need to use adaptors or build cables with the appropriate connectors.
Your BTECH AMP-25 amplifier does not include an antenna. It is very important to not transmit without an antenna or dummy load connected to the ANT connector on the rear panel of the amplifier.
Transmitting without an antenna or dummy load may cause harm to the radio equipment.
When choosing an antenna, make sure that it is suitable for the bands you plan on transmitting and receiving on. For example, if you plan on transmitting on 145MHz, make sure that the antenna you select has an SWR of 1.5:1 or less on that frequency. Using an antenna with an SWR greater than 1.5:1 could damage the amplifier.
If you plan to use a magnetically-mounted (mag-mount) antennas, ensure that the antenna is grounded to a metal surface, such as a vehicle body. Magnetically-mounted antennas do not operate properly without a good ground.