VHF 2m power amplifier LDMOS 144-148 MHz 1000W KIT. Power amplifier 144-148 MHz for BLF188XR transistor. The transistor is not included in the. Copper bracket for press transistor.
Low pass filter 144-148 MHz. Coupler 2 m (tandem match) SWR meter. Over voltage protection (including load dump). Low ohmic inverse current operation.Diagnostic feedback with load current sense. Operating voltage 5 58 VDC. Operating current 38 44 A. On-state resistance 7.2 m.
To allow the switch to be disabled by an emergency signal, 3 protection triggers are added to board: high VSWR protector to disconnect the amplifier from power supply if SWR rises higher than preset level 2.0:1 (may be varied by user). Forward and reflected voltages from directional coupler must be provided to determine the VSWR.
Output power excess protector to disconnect the amplifier if output power is more than preset level (150W and higher, may be varied by user) DC current excess protector to disconnect the amplifier if current consumption is more than preset level The onboard current sensor provides about +5VDC at 30 Amps for external current meter. Meter impedance must be at least 10 KOhm.
It has a min switch-off time as low as 30 microseconds and fast enough to protect the amplifier in case of emergency. All modules are used in this power amplifier.
The item "VHF 2m power amplifier LDMOS BLF188XR 144 MHz 1000W KIT" is in sale since Wednesday, September 23, 2020. This item is in the category "Consumer Electronics\Radio Communication\Ham, Amateur Radio\Ham Radio Amplifiers". The seller is "v_r3kr" and is located in Voronezh.This item can be shipped worldwide.