A rather dramatic title, but I wonder if I'm killing my neighbour's RFID door entry key fobs with my station's RF? Randomly it seems, that the landlord (Council) have to come out and re-programme one of my neighbour's electronic key fobs to let them in. I run QRO, just below the legal limit and have had issues with RFI to the intercom system before (audio breakthrough on to the internal handsets). There's occasions where key fobs have just failed. I've been running QRO on and off for years. I thought if it was an RFI problem, that the key fobs would be affected more often. I've not kept a log of when the key fobs have gone wonky, so it may just be coincidental... It's a GDX system by Stanley. 73, Ian - MM0IMC.