SR_DEMO_A - Walkie Talkie Transceiver/Data transfer Module

Demo Board specification

This demo board can be used for the evaluation of these modules:

• SR_FRS_1WU: 1W/400M-480M
• SR_FRS_1WV: 1W/136M-174M
• SR_FRS_1W350:1W/350M-390M
• SR_FRS_2WU: 2W/400M-480M
• SR_FRS_0W5U: 0.5W/400M-480M
• SR_DMR_2WU: 2W/400M-480M (DMR digital module)

Please select the right demo board based on the module you used.

It is a complete Walkie Talkie Transceiver system; only DC 5V power supply is needed. You may evaluate the voice talking and data transferring by the demo board. You needn’t waste your time in search the components and sealing. It is convenient for you to evaluate our module quickly, and it is also effective for you to expedite the development.

What you get

One antenna for this demo board is included.

You can purchase a battery and speaker separately. They are not included to reduce shipping costs.

We will provide the technical support for both hardware and software, more than that, we can provide the demo code for your reference.

Features of the demo board

1. Voice intercom demo
2. Data transfer demo
3. Group interface for customer development

Instructions for the voice intercom demo

1. Plug the speaker into the white outlet
2. Fix the antenna to the demo board
3. Connect the DC power supply (or Battery) to the demo board，please pay attention to the power polarity；The DC power voltage could be 3.3V-5V, the recommend DC power is 4.0V; The current capacity should be double of the transmit current.
4. Next, connect the power supply. The power Led should turn on.
5. Then press the PTT key, the red LED for transfer state indication will turn on. Now you may talk. Release the PTT key, the red LED will turn off returning it into the receive state，so you may receive the talking from opposite side.

Comments

• The Tx Frequency and Rx Frequency can be set separately.
• The Tx CTCSS and Rx CTCSS can be set separately.
• The parameters are not persistent because this demo board does not include the MCU.

Notes:

You will receive the demo board with antenna, without battery(Li_ion battery is better), speaker(1W/4R);

The demo board is subject to change without notice. Please contact us for complete spec. of demo board.