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    RF from amateur radio triggering squawks from outside alarm sounder

    Otherwise 100% (if elderly) Optima XM6 panel with good battery, and Pyronix "Belle" outside sounder, alo with a good back up battery. I am a radio ham and when I transmit on 136kHz (yes, kHz LF) it will make the outside sounder squawk very briefly and intermittently every few minutes. The two...
  2. C

    Armoured mains cable sizing question

    I need to run mains single phase power to some new land we have bought, a distance of about 150 metres from my workshop with a decent mains power feed into it. I want to use 3 core armoured and bury it. I need to run a normal 13 amp socket at the field end. What size cable do I need, and is it...
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