Camelradio R1 Single Frequency Repeater Instructions
To customers
Thank you very much for your favor of our products! The purpose of this specification is to let you quickly grasp the use of this product and understand the detailed functions and operation of the product. In order to avoid bodily injury or property damage caused by improper operation, please read this product carefully before using it.
This datasheet applies to the following products: R1 single frequency repeater
This product is based on a professional-grade RF chipset and is of reliable quality.
Camel Radio, promote the technological progress of the industry!disclaimer
We strive for completeness and accuracy in the preparation of the manual, but we do not accept any responsibility for errors or omissions that may occur.
RF radiation information
Radio frequency refers to the electromagnetic frequency that can be radiated to space, which is a technology widely used in communication, and the product will produce a certain amount of radio frequency radiation during use.
Meet the metrics
This product complies with ETSI-TS102 361-1. The indicators are in accordance with CE & FCC specifications.
Feature description
This product is a single frequency repeater that compatible with handsets from MOTOROLA and Hytera. Developed for scenarios such as drone mounting, wall-mounted installation, etc., with obvious advantages in size and weight. Based on the DMR dual-slot physical layer, only one frequency is needed to complete the call repeating work, 1 slot for RX and the other for TX, which saves half of the frequency resources compared with the traditional differential frequency repeater. At the same time, the restriction of the TX and RX frequency of the duplexer is eliminated, and it can work in all frequency from 400MHz to 470MHz. The frequency of TX and RX is independently adjustable, which can be the same or different. The user only needs to find a suitable high point, install the power supply and antenna to work.
The repeater can configure the transceiver frequency according to the needs of the scenario, and the transceiver frequency does not affect each other. The repeater has a radius of 4-5 kilometers (outdoor), which can expand the communication area of ordinary handsets by 2 times. Depending on the scenario, the repeater can be placed at a high center to cover the whole world or at a tunnel bend to connect the two ends, and the repeater will forward the legitimate call to other devices after receiving the legitimate call (as shown on the left side of the
Multiple repeaters(SPECIAL version) can be attached to the LAN. For example, 1 repeater is placed on each floor of a building. When a handset initiates a call, the voice will be transmitted to the entire LAN through the network and forwarded by other repeaters, so as to complete the signal coverage of the entire building. The special feature of this machine is that the entire building can be covered with only one frequency point.
Product Advantages:
- The circuit adopts the classical superheterodyne architecture, with voltage controlled bandpass filter, dedicated receiver, dedicated PLL, and crystal IF All RF components come from TI, AKM, SKYWORKS, KDS and other international first-class suppliers. The performance is better than that of zero-IF integrated RF solutions.
- The all-aluminum body and good thermal design ensure long-term high- load operation.
- 400-470 full section work. Compatible with Motorola and Hytera
- Optimized for small mounting scenarios, strong anti-interference; leading standby power consumption and weight.
- Digital signal transmission is used in the whole process of audio forwarding to avoid the loss of sound quality caused by analog audio
- Compared with the traditional frequency repeater, this product does not need to reprogram the handset, and still works in DMO mode. Even if the repeater signal range is out of range or the repeater fails, the call between the handset is still valid – making the communication more reliable.
Typical spec
| Main feature | |||
| Frequency range | 400-470MHz | Channel capacity | 5600 |
|
protocol |
DMR |
Operatin g voltage |
7.4-9V |
|
current |
230mA @ DMR idle 1200mA @ TX | Ambient temperat ure |
-20℃～ +60℃ |
| Antenna impedance | 50Ω | interfac e | UART/Audio |
| LCD | 0.49 inches | weight | 280g |
| size | 113*79*42mm | ||
| transmitter | |||
|
Channel bandwidth |
12.5KHz |
Modulati on frequenc y offset | |
| Frequency accuracy | ±1.0ppm | Idle power | TDMA≦-57dBm |
| Transmit power | UHF:4W/0.5W | Audio response | +1dB~-3dB |
| Audio quality | 16bit digital HD | DMR FSK
error |
≤5% |
| EMI | -36dBm@<1GHz – 30dBm@>1GHz | Digital Protocol | ETSI TS 102 361 |
| Specific ation | |||
| Adjacent channel power |
-60dB |
Digital modulati on |
12.5KHz:7K60FXW |
| Receiver | |||
| Channel bandwidth |
12.5KHz |
Frequenc y accuracy |
±0.5ppm |
| Co- channel suppressi on |
-12dB |
Forwardi ng delay |
90ms |
|
Blocking |
90dB |
Digital sensitiv ity |
-116dBm @ BER=1% |
| Spurious signal anti- interfere nce |
93dB |
selectiv ity |
65dB |
| Intermodu lation | 65dB | Audio quality | 16bit digital HD |
| serial
number |
Pin name | attribute | specificati
on |
remark |
| 1 | Audio
monitoring |
O | 8 ohms 1W | |
| 2 | LCD | O | 0.49 inches | |
| 3 | Write frequency
port |
I |
RJ45 |
Dedicated programming
cable |
| 4 | Reset key | I | Compression reset | |
| 5 | RF port | I/O | 50 Ohm | |
| 6 | Power port | I | 7.4V | Capacity>
2A |
Remark:
① Only the first channel plays a role when programming. The user only needs to configure the RX frequency, TX frequency and color code, and the rest will be processed automatically. It is recommended to enable the transmission timeout (TOT) for 60 seconds, which can be configured according to the situation and should not be too large.
Screen display
The LCD is divided into two rows. The left side of the upper row shows the RX frequency of the unit in KHz. The right side of the top shows the call status, if there is a call, it will show ‘#'(or ‘*’for remote call), and if there is no call, there will be no display. The color code is displayed on the left side of the lower row, and the color code is represented by the two decimal numbers after the beginning of CC. For example:
Workflow diagram
As long as the repeater receives a call that matches the receiving frequency and color code of the SFR, it will repeat it. When repeating, the caller’s ID, call address, and call type are transparently transmitted
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Documents / Resources
 |
Camelradio R1 Single Frequency Repeater [pdf] Instructions R1 Single Frequency Repeater, R1, Single Frequency Repeater, Frequency Repeater, Repeater |