2020年5月18日 · LDMOS RF Power Amplifier 23cm 300 Watt designed to work with 23cm band amateur radio transceivers. – Integrated controller design, controller integrated into main PA box. First option allow you to install the controller in a ham shack and PA box closer to antenna. Second option is for installing the PA on the operator desk.

Top view of PA chassis, showing two completed GI-7B PAs installed with a 90 degree hybrid combiners on both input (low power) and output (high power). Fifty Watts of drive easily yields 500W output. Grid current must be kept under 100mA per tube to control thermal drift.

2016年12月22日 · You can setup PA 23cm 150W block near antenna or assemble a complete solution with power supply, RF Power and temperature display, protection and automation. Edition of this PA on two MRFE6S9160 transistors with power up …

This is a simple power amplifier for the 23cm HAM band. It uses the 18W RA18H1213G module from Mitsubishi as the active device. Interactive BOM is available here. 23cm power amplifier …

2017年2月6日 · This page describes how I assembled a 23 cm PA kit based on the Mitsubishi RA18H1213G power module. All components except the power module were purchased from Bert Modderman PE1RKI. He is a wizard with his CNC milling machine. Mechanical parts sold by him are beautiful and perfect!

PA 23cm assembly KIT for your own power amplifier assembly. The device provides operation control and protection of the power amplifier.

Our high-performance amplifier for the 23 cm amateur radio band achieves great performance, high efficiency and best linearity. In contrast to tube amplifiers, an LDMOS transistor with a supply voltage of only +50 V is used here.

LDMOS Power Amplifier for 23cm - 150 W desired for all modulation types, including WSJT. Ideal for CW, SSB, ATV, SAT, EME WSJT. PA includes transistor's current temperature compensation circuit controlled by gate bias, VSWR and RF Power …

At 2.5kV anode voltage and with good air cooling, it puts out 250W easily with about 12.7dB of gain. It can be pushed up to 500W output, but thermal stability becomes a problem. The complete GI-7BT power amplifier. The air inlet is a 1" pipe filled with waveguide beyond cutoff material.

Drill a 1.5mm hole in the center of each disk. Cut 2 x 12mm lengths of 1.5mm diameter rod. cool the rods in ice for 20 minutes. Heat the disks to 400 degrees F in an oven. Carefully place a disk flat on a ceramic surface capable of handling the heat.