Morse code?

[Dendoe]

Whilst flying a J-52 Trimotor (I love vintage aircraft) just after take off I get a double blast of what I assume is Morse code that refuses to go away. As I love flying this relic It is most annoying. Can anybody help me to get rid of it? :-/. I have tried most things. Any help appreciated.
Dendoe

[Steve M]

It's a radio frequency, discussed here a while back..

http://205.252.250.26/cgi-bin/yabb2/YaB ... 1288456425