Looking back at 1981 and the reception of BBC TV audio on 41.5 MHz in Texas

First of all, let's set the scene for a bit of context. The original TV system in the UK was known as 405-line and was in use from 1936 to 1985. The lowest TV channel was B1 with the video carrier being on 45.0 MHz. One unusual feature of this system was that the audio was AM and this was 3.5 MHz lower than the video carrier i.e. 41.5 MHz for Channel B. Pat Dyer, WA5IYX was a very active TV DXer…