在30mhz以上有很多信号可以判断10米是否开通,我常用的是33.0mhz的日本fax广播,
31.00 usb buckland park, sa atmospheric radar (7.5 kw)
31.025 usb cyprus military high power ohr (frequency can vary)
32.325 usb cyprus military high power ohr (frequency can vary)
33.00 usb japan data fax pager - ja1 in pm95sq
33.00 usb woodpecker type tx - location unknown
33.20 usb darwin, nt antartica radar (7.5 kw) (temp qrt)
33.20 usb davis, antartica radar 62s, 59w (7.5 kw)
34.512 usb rtty tx unid qth within australia, but possibly vk5 or vk6
45.205 usb north korea sw harmonic, signs off 0400 utc
35.00 usb beijing, china sw harmonic
35.24 usb yankalilla, adelaide ms radar (temp qrt)
35.24 usb learmonth, western australia ms radar (temp qrt)
35.25 usb bbc singapore sw harmonic (3x11.75 mhz) signs off 0200 utc
35.25 usb chinese (presumed) radar tx - buzzing or raspy sound
37.50 usb kunming, china - buzzing sound, 12 kw
37.72 usb kototabang, indonesia ms radar (0s,100e) 12kw 5 yagis
37.95 nfm asian 2-way utility - heard in sydney, feb, 2010
38.90 usb wuhan, china ms radar (31n, 114e)