[AMRadio] Strange, did aliens arrive?

[w5jo at brightok.net]

I came into the station to calibrate a clock so I dialed up 10 Mc to find 
nothing, not even a carrier.  So I dialed down to 5 and the same.  I then 
went to 2.5, which is a bit of a stretch for me and nothing.

Same at 15, nothing not even a carrier

Anyone else or am I in a hole?  First time that I ever could not hear them 
on at least one frequency

Jim
W5JO