18 Oct
2017
18 Oct
'17
6:53 p.m.
Hello all, Could anyone identify what the pumping hash sound is on the enclosed .wav file ? I get this sound on NOAA 15, 18 and 19. Just getting start on this. Have simple 137 MHz tuned dipole shaped in a V pointing North and South as per the directions. Thank-you. Michael – N8iup