BTECH AMP-V25 Amplifier User Manual
- June 10, 2024
- BTECH
Table of Contents
AMP-V25 Amplifier
BTECH Amplifier
The BTECH Amplifier is a portable, lightweight, wide coverage RF power amplifier for handheld radio equipment. It supports both digital and analog radio and automatically recognizes digital and analog systems. The amplifier is available in two versions, FDMA and D Series TDMA, which support different modes of communication.
Product Highlights
- Portable and lightweight design
- Wide coverage RF power amplifier
- Dual mode amplifier for both digital and analog radio
- Automatic recognition of digital and analog systems
- FDMA Amplifier supports Analog, P25 Phase 1, C4FM (System Fusion), NXDN, IDAS, dPMR, MPT1327
- D Series TDMA Amplifier supports all FDMA modes plus DMR and P25 Phase 2
Product Usage Instructions
Before using the BTECH Amplifier, it is important to choose a suitable antenna for the bands you plan on transmitting and receiving on. If you plan on transmitting on 145MHz, for example, you will want to ensure you have picked an antenna that states it is capable of working with 145MHz.
It is also important to note that the BTECH Amplifier does not include an antenna. Do not transmit without an antenna or dummy load attached to the amplifier. Doing so may cause harm to the radio equipment.
If you plan to use a magnetically mounted antenna, it must be grounded to a metal surface, such as a vehicle body. Magnetic base antennas do not properly operate unless they are fully magnetically grounded first.
The BTECH Amplifier can be operated in three basic ways:
- Connect it directly to your radio and use an earpiece to operate the amplifier.
- Connect it directly to your radio and use the speaker to operate the amplifier without using the radio itself. The kit includes a KPG-22 to KPG-22 (Kenwood 2 Pin) Control Cable. You may need to use an accessory adaptor if your radio does not use the KPG-22 2 Pin Standard.
- Operate the amplifier independently by connecting it to a power source and then connecting the radio to the amplifier using the KPG-22 to KPG-22 Control Cable.
When operating the BTECH Amplifier, it is important to comply with RF exposure standards set forth by organizations such as ANSI/IEEE and the FCC. Do not remove the RF exposure label from the device, and make sure that user awareness instructions accompany the device when transferred to other users. Do not use this device if the operational requirements described in the user manual are not met.
For further support and information, visit baofengtech.com.
READ FIRST：
- The BTECH Series Amplifiers are available in different frequency bands and frequency modulation modes (D Series covers both FDMA/TDMA).
- Transmitting Out of Band (Example: Transmitting VHF on UHF):
- FDMA Amplifier: Transmitting out of band on the FDMA Amplifiers will pass through the direct HT power through. Ensure the connected antenna is matched and you can transmit out of band without amplification
- TDMA Amplifier (D Series): Amplifier will not transmit out of band (example: it will not transmit a VHF signal on the UHF amplifier (vice versa)). Do not transmit out of band on the TDMA (D Series) Amplifier
- Transmitting on a different Modulation Mode:
- FDMA Amplifier: The FDMA amplifier will not properly transmit another other modulation mode (such as DMR which is TDMA)
- TDMA Amplifier (D Series): The TDMA Amplifier is compatible with both FDMA and TDMA signals. It will automatically transmit the proper signal
- Use a Proper External Antenna to the Amplifier
Antenna Basics
Your BTECH Amplifier does not include an Antenna. It is very Important to not
transmit without an antenna or dummy load attached to the amplifier. Doing so,
may cause harm to the radio equipment. You will want to choose a suitable
antenna for the bands you plan on transmitting and receiving on.
Example: If you plan on transmitting on 145MHz you will want to ensure
you have picked an antenna that states it is capable of working with 145MHz.
If an antenna is not properly tuned for the frequency you transmit on – it can
cause damage with the reflected power going back into the radio. Pick an
antenna with SWR of less than 1.5:1 to safely transmit.
Magnetically Mounted Antennas:
These antennas must be grounded to a metal surface, such as a vehicle body.
Magnetic base antennas do not properly operate unless they are fully
magnetically grounded first.
Product Highlights
- The BTECH Amplifier series are portable, lightweight, wide coverage RF power amplifiers for Handheld Radio equipment.
- Dual mode Amplifier for both Digital and Analog Radio Automatic recognition of digital and analog systems.
- Use the FDMA Amplifier for: Analog, P25 Phase 1, C4FM (System Fusion), NXDN, IDAS, dPMR, MPT1327 Use the D Series TDMA Amplifier for all FDMA Modes Plus DMR and P25 Phase 2
- TDMA Amplifier Signified by “D” on Model Number
- High output power up from 30-40 watts (Input: 2-6 watts)
- Small size: This amplifier’s size makes it the perfect companion for field operation without the added weight.
- Includes Voltage Spike Suppression, Over Temperature Protection, RF sensing, Automatic Power Control (APC), Harmonic Filters.
- Harmonic Filters: Purifies the input signal and transmits a cleaner signal
- Built-in large speaker and microphone socket.
- Status indicators: Shows on the amplifier the current status.
Three Basic Options to Operate your Amplifier：
Option 1:
Only connect to the Antenna Jacks on the Radio and Amplifier – Use the radio
itself to operate the amplifier
Option 2：
Only connect to the Antenna Jacks on the Radio and Amplifier – Use the
accessory jack on the radio to an external mic or earpiece to operate the
amplifier
Option 3:
Connect both to the Antenna Jacks and Audio jacks on the Radio and Amplifier –
Use the supplied microphone and built in speaker to operate the amplifier
without using the radio itself. The kit includes a KPG-22 to KPG-22 (Kenwood 2
Pin) Control Cable. You may need to use an accessory adaptor if your radio
does not use the KPG-22 2 Pin Standard.
Option 3:
Connect both to the Antenna Jacks and Audio jacks on the Radio and Amplifier –
Use the supplied microphone and built in speaker to operate the amplifier
without using the radio itself.
The kit includes a KPG-22 to KPG-22 (Kenwood 2 Pin) Control Cable. You may
need to use an accessory adaptor if your radio does not use the KPG-22 2 Pin
Standard.
FCC Statement
This equipment has been tested and found to comply with the limits for part 90 of FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates and can radiate radio frequency energy. If not installed and used in accordance with the instructions, it may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. Verification of harmful interference by this equipment to radio or television reception can be determined by turning it off and then on.
The user is encouraged to try to correct the interference by one or more of
the following measures:
Reorient or relocate the receiving antenna. Increase the separation between
the equipment and receiver. Connect the equipment into an outlet on a
different circuit to that of the receiver’s outlet. Consult the dealer or an
experienced radio/TV technician for help.
Operation is subject to the following two conditions:
This device may not cause harmful interference. This device must accept any
interference received, including interference that may cause undesired
operation.
Note: Changes or modifications to this unit not expressly approved by the
party responsible for compliance could void the user’s authority to operate
the equipment.
Compliance with RF Exposure Standards
United States Federal Communications Commission, Code of Federal Regulations; 47 CFR § 1.1307, 1.1310 and 2.1091 American National Standards Institute (ANSI) / Institute of Electrical and Electronic Engineers (IEEE) C95.1:2005; Canada RSS102 Issue 5 March 2015. Institute of Electrical and Electronic Engineers (IEEE) C95.1:2005 Edition Any Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. This device complies with part 15 of the FCC Rules.
O peration is subject to the following two conditions:
- This device may not cause harmful interference, and
- this device must accept any interference received, including interference that may cause undesired operation.
Guidelines:
Do not remove the RF Exposure Label from the device. User awareness instructions should accompany device when transferred to other users. Do not use this device if the operational requirements described herein are not met.
Supplied Accessories
【Specifications】：
- Frequency range：
- 136MHz-174MHz: AMP-V25 & AMP-V25D / 220-225MHz AMP-V25 (220) / 400MHz-480MHz AMP-U25 & AMP-U25D
- Power supply：
- DC 13.8V （±15%）
- Input RF power：
- 2 – 6W （±10%）
- Output RF power：
- 30 – 40W
- Current：
- 4.0-5.5A
- Size：
- 13511535mm
- Net weight：
- 800g