This is the 70cm EME-PA. Behind the PA, on the wall, you see the Filter to reduce 3rd harmonic and the HF400-Relay and the direcion-coupler (both from EME-Müller).
Inside you see the stabilization board for the screen-grid-voltage (homebrew, simply with zener-diodes).
On the right side, you see the flapper to tune the Anode.