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HF Band Characteristics
160
1.8-2.0 MHz.
A neighbor to the AM Broadcast band, Very similar conditions to what you hear on
AM Broadcast, quite localized during the day, with long distance capability at
night. During the summer months the long distances at night can be several
hundreds of miles and during the winter it can be several thousand
miles.Sometimes noise created by
static crashes hinder communications in the summer months but very nice in the
winter!
80
3.5-4.0 MHz.
80 Meters is very similar to 160 meters but with greater distances especially at
night. 80 tends to be a very reliable band less subject to variations of the
sunspot cycle and is used a lot for regular net operations and message handling
and "local rag chewing". Again can be very noise prone in the summer static.
40
7.0-7.3 MHz
This is many ham's favorite band. It is always open somewhere. During the summer
daytime distances of 300-400 miles and night time distances of 1000 miles are
very common. Winter days with 500 miles or more are usual and night time
conditions bring DX intercontinental communications.This band is shared with
short-wave broadcast from countries outside of North America. Between these
interfering signals a ham with a reasonable station can work stations worldwide
if you can find a clear spot!. Not as affected by the sunspot cycle as 20-10
meters.
CHECK OUT THE 1721 ROUNTABLE GROUP ON 40 METERS!
30
10.100-10.150 MHz.
A lot like 40 meters but can only be used on CW and RTTY. No broadcast
interference and has slightly longer range than 40 meters. Daytime ranges of
1000 miles are quite common.
20
14.000-14.350 MHz.
Just about all of the serious DXers hang out on 20 meters!
This can be a VERY exciting band with some of the best DX found on any band.
Around the world daytime communications are generally possible and when the
sunspot cycle is peaking 20 can be used around the clock! Not likely to be used
for short-range communications. The only way to work someone a few hundred miles
away would be scatter or possibly "long path". Ground wave signals of about
50-75 miles might be all you would expect. At the bottom of the sunspot cycle,
openings to other continents are short, rare and few and far between!
17
18.068-18.168 MHz.
Band conditions are very similar to 20 meters. This seems to be a very popular
band when hams go mobile and
lots of fun can be wxpected.
15
21.000-21.450 MHz.
A lot like 20 meters but a bit more flakey.. More influenced by the sunspot
cycle. Much less night time activity than 20 meters but at the peak of the
sunspot cycle, 15 can provide much greater distances! On the down side, at the
bottom of the cycle, 15 may not open for days.
12
24.890-24.990 MHz.
Very heavily influenced by the sunspot cycle. At the bottom of the cycle it is
suitable only for very short distance groundwave communications only for long
periods of time. At the peak of the cycle it is capable of communications over
thousands of miles with a minimum of equipment. Another nice mobile band when
conditions are right.
10
28.000-29.7000 MHz.
This is the HF band most heavily affected by sunspots and the sunspot cycle and
it can be erratic and exciting at the same time with lots of Dx for the qsl
hunter or just as a fun band. Minimum power and simple antennas can bring you a
hundred countries in a short period of time when the sunspot cycle is rising
towards the peak. Five watts or even less can work half way around the earth!.
Ground wave coverage is 25 miles or so. Lots of beacon stations worldwide
for you DX hunters.