I could put up a topband carrier as well. By placing it a few Hz away from yours, can try for a double plot ? Andy www.g4jnt.com On 4 March 2011 19:58, Chris <[email protected]> wrote:
Thanks Andy, great stuff. I think we can be pretty sure it was as you suggested and not aircraft. If it was aircraft it would be there all the time presumably. Pete and I plan to repeat the test when