Specifications: Weight: 300g Size: 6.7*7*6cm Line length: 37cm Colour: Black Package List: 1 * External S Meter Display Meters for Yaesu FT-857/FT-897 FT-857D& FT-897D external header display setting method: Receive Display Settings 1. press (FUNC) key to enter the setup menu, enable the extended menu. 2. rotate (SELECT) to call up the setup menu item No-061(MTR ARX SEL). 3. rotate (DIAL) to select an external instrument display: -SIG: the input signal strength display -CTR: Discriminator Center Meter -VLT: battery voltage -N / A: blank -FS: buckle in the instrument 1mA full scale output signal calibration standard external instruments -OFF: Turn off the meter. 4. press (FUNC) button to save the settings and exit the setup menu. Emission Display Settings 1. press (FUNC) key to enter the setup menu, enable the extended menu. 2. rotate (SELECT) to call up the setup menu item No-061 (MTR ARX SEL). 3. rotate (DIAL) to select an external instrument display: -PWR: transmit power display -ALC: Automatic Level Control voltage display -MOD: Modulation Level Display -SWR: SWR display -VLT: Display Supply Voltage -N / A: blank -OFF: Turn off the meter. Note: The instrument has been calibrated delivery, but do not preclude the bumps transit results in a static pointer is not zero, in this case the instrument can be adjusted at the mask-side self-zeroing screws appear black. High Performance: The display meter has high performance and super stability. It keeps your machine running stably. Wide Applications: The external display meter can only be applied for Yaesu FT-857D and FT-897. So choose the right model for your needs. Clear Display: The automatic can clearly display level control voltage, modulation level, standing wave ratio and supply voltage. Premium Material: The SWR power meter has high quality and excellent durability.This device adopts premium material, durable and long service life.You can use it confidently. Convenient to Use: The SWR meter is easy to operate.This product does not need some complicated tools.