Antenna System:

• Transmit Antenna: “PE1RKI” Slotted Waveguide, tuned for 1304MHz
• 437MHz 333k or 2M DVB-S/S2 Rx Antenna WIMO “Big Wheel” Horizontal Polarisation, omni directional
• Feeders: Andrew LDF5-50 (Rx) and LDF6-50 (Tx)
• 2m (Voice) Rx Antenna: Simple dipole with receiver tuned to 144.750MHz 103.5Hz CTCSS

GB3OO Repeater during construction (8/10/2025)

Getting ready to start work!

Getting ready to hoist the Tx antenna

GB3MHZ (Martelsham) as received on the Tx antenna

Tx and Rx Antennas

Tx Antenna Return Loss

Transmitter:

• SR-Systems Minimod DVBS-2
• SR-Systems H264 Encoder
• Power Amplifier: “Homebrew” LDMOS Linear Amplifier 20W Class-A
• 70cm Rx: BATC Minitiouner with “Ryde” Software
• 2m Rx: QYT WP-9900
• ModBus Telemetry by G8YTZ
• Media Player: PiDeck Systems “PiDeck” (Blackmagic Hyperdeck emulator)
• Broadcast Switcher and Streamer: Blackmagic ATEM Mini Pro
• Software Control and media scheduling: Bitfocus Companion