ITEM NAME:External S Meter SWR Watt Meter Power Meter for Yaesu FT-857 FT-897 Description: 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-060 [MTR ARX SEL]. 3, rotate [DIAL] to select an external instrument display: SIG: the input signal strength display C T R: 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 ATX 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. Specification: Material: Plastic Size: Approx.12x15x12 cm / 4.72x5.91x4.72 inch Package Includes: 1 Pc Power Meter Note: 1.If you can not find the numbers 60, 61 menu, is this two radio hidden menu. Long press the F key to open the menu settings, the 1st menu set to ON, press the F key to open the exit to save the hidden menu. 2.Please allow 1-3cm error between the size from the above and the actual item due to manual measurement..SWR: SWR display. SIG: the input signal strength display. MOD: Modulation Level Display. PWR: transmit power display. N / A: blank.