160m band offers reliable working over range up to 25 miles during daytime. On winter nights ranges up to several thousand miles.
80m-band (3.5-3.8 MHz)
During the day time 80m-band covers upto about 200 miles. This band is more useful during the night because the range is several thousand miles. Transoceanic contacts are regularly made during the winter months. During the summer the static level is high.
40m-band (7.0-7.2 MHz)
40m-band has many of the characteristics as 80m-band except that the distance, that can be covered during the day and night hours are increased. Day-light distance upto about thousand miles and during winter nights it is possible to work stations as far as the other side of the world. The signals following the darkness path. Summer static is much less of a problem than on 80m.
20m-band (14.0-14.35 MHz)
This is the best amateur band for DX work. During the high portion of the sunspot cycle it is open to some part of the world practically throughout the 24 hours, while during a sunspot minimum it is generally useful only during twilight hours and the dawn and dusk periods. There is practically always a skip zone on the band.
15m-band (21.0-21.45 MHz)
15m-band shows highly variable characteristics depending on the sunspot cycle. During sunspot maximum it is useful for long distance work during a large part of the 24 hours, but in years of low sunspot activity it is almost wholly a daytime band, and sometimes unusable even in daytime. However, it is often possible
to use it for distances up to 1500 miles or more.
10m-band (28.0-29.7 MHz)
10m-band is generally considered to be a DX-band during the daylight hours (except in summer) and good for local work during the hours of darkness, for about half the sunspot cycle. At the sunspot minimum the band is usually dead.
