KIT for LDMOS amplifier LCD SWR Directional coupler 144-148 MHz 1000-2000W
The SWR sensor.
Cable - RG141
Band 70-146 MHz
Size 120 x 50 mm
The configuration used in the Directional coupler works well over the frequency range of 70 to 146 MHz, with a coupling factor of 43 dB to 38 dB. Directivity of 22 dB from 26 dB 70 to 146 MHz.
LCD SWR power meter indicator for LDMOS MOSFET tube amplifier 2400W max
The forward voltage must be applied to the input port F, reflected to input port R.
Power supply voltage is +7.5...+15 volts.
Minimum voltage from directional coupler (SWR bridge) +2.55V
For proper operation the device requires calibration. Calibrate the Power Meter reading with trimpot FWR on reference instrument. Calibrate the readings SWR by REW trimpot on the reference meter connected in series to the antenna or using the load with known resistance , such as 100 ohms. In this case, the VSWR set to 2.0:1 .