Removing a 4 kW or 12 kW Magnetron
NOTE:
GMR™ 1234/1236 xHD3 open array radars built before 2025 used a different
magnetron than the one shown here. Follow the instructions for removing the
previous model of 12 kW magnetron (Removing a Previous Model 12 kW Magnetron).
The 4 kW magnetron in the GMR 434/436 xHD3 radar and the 12 kW magnetron in GMR 1234/1236 xHD3 radars built after 2024 are protected behind a non-ferrous metallic cover. The magnetron and the cover are secured by four screws.
The two bottom screws also secure a grounding plate that contacts the electronics box housing. The bottom right screw also secures the magnetron ground wire . A metal spacer behind the magnetron is secured to the waveguide with two screws.
- Using a 3 mm hex wrench, remove the bottom two screws that secure the grounding plate to the magnetron.
- Set the grounding plate aside.
- Remove the remaining two screws, and set the magnetron and the cover aside.
- Using a #2 Phillips screwdriver, remove the two screws that secure the spacer to the waveguide.