Frequency Counter CTCSS/DCS Decoder for 2-way Radio Features: 1. New upgraded frequency counter, measuring transmit power, frequency and muting code triple function, fully meet your needs. 2. Equipped with power test cable and antenna for your convenience. 3. With micro USB charging port, built-in 1500MA lithium battery for long time use. 4. Non-toxic one-to-one special walkie-talkie software transmission, will not waste your resource space, you can use it with confidence. 5. This frequency meter can measure continuous carrier signal (walkie-talkie, wireless phone), is the preferred tool for maintenance personnel, wireless enthusiasts to test the frequency and mute. Instructions: 1. When the frequency counter and the walkie-talkie are turned on at the same time, press and hold the walkie-talkie launch button for 1-5 seconds to display the frequency and muting. 2. It is necessary e the attached cable and adapter to connect the walkie-talkie and the frequency counter. Press and hold the walkie-talkie launch button to measure the specific power value of the walkie-talkie. 3. Long press the power button to turn on/off 4. Long press the power button in the off state can switch 1K or 0.1K display mode. 5. Quickly press the power button to reset (retest). Specifications: Material: Plastic Color: Black Power: 1-30W Muting: CTCSS/DCS Frequency: 100-520MHZ Battery Capacity: 1500mAh Antenna Height: 12.5cm / 4.9in Connection Cable Length: 11cm / 4.3in (BNC Male to SMA Female) Size: 9 * 5.5 * 2 cm / 3.5 * 2.2 * 0.8in Weight: Approx. 253g Package List: 1 * Frequency Counter  1 * Antenna 1 * Connection Cable 1 * USB Cable