4 ms·
Before Radio 4 LW was renumbered in 1988, it was 200kHz. And before the early 70s it was referred to as it's wavelength... 1500m :P
by dotwaffle 3mo ago
Before Radio 4 LW was renumbered in 1988, it was 200kHz. And before the early 70s it was referred to as it's wavelength... 1500m :P