sweeping sounds / tones ,between 4 - 5 mhz.

[alok]

I hear between 4 - 5Mhz and eleswhere sweeping tones / signals that eat up a bunch of frequencies.
Like between approx. 4630 to 4680 Mhz on 1/23/10 at 5PM PT.

What are these ,can they be decoded or looked at ????

alok

 

[ka3jjz]

Look up CODAR on wikipedia. You just found the bane of DXers existence on 60m 73 Mike

 

[Ken_Allen]

Yep, it's CODAR as said above.