[Lf] 30dB below audibility

[Andre' Kesteloot]

LAWRENCE MAYHEAD wrote:

>  Hi Johan,Many thanks for your report on my experimental
> DFCW transmission.I am glad that you found the 1hz shift
> about right,I settled on that value after tests using
> Spectran and a weak local signal.This may be of intrest to
> others, using resolution of 0.12hz at a sample rate of
> 8000 and 10sec elements I was able to see a signal that
> was 30/40db  below audibility. I will contine with beacon
> tests espesially when there is a chance of good
> propagation and would appreciate reports. 73s Laurie