And I too am a frequent visitor to the skies around Sleap, Shawbury, Sherlowe, and Shrewsbury. My Pilot 111 has never faltered, though it did so once over the Lake District from Morcambe up to the Solway. And the other pilot in the aeroplane also had a Pilot 111, and his did exactly the same (both units showed 'no signal' just for that leg).
SSD