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HAFIDZ YOUNG SCIENTIST

I am Hafidz, the young scientist.This blog is about my exciting homeschooling journey.It will remains as my sweet memories forever. Glad to share the special moments with you !!!


Friday 22 November 2013

POPULAR BANDS : UF, VHF AND UHF

Popular Bands

So what are the bands that most Radio Amateurs use? The table below shows bands that are relatively common and how and when they are in use. Again your license will determine which bands and what portions you are eligible to use.


Band (meter)MHzUse*
HF1601.8 - 2.0night
803.5 - 4.0night and local day
407.0 - 7.3night and local day
3010.1 - 10.15CW and digital
2014.0 - 14.350world wide day and night
1718.068 - 18.168world wide day and night
1521.0 - 21.450primarily a daytime band
1224.890 - 24.990primarily a daytime band
1028.0 - 29.70daytime during sunspot highs
VHF650 - 54local to world-wide
2144 - 148local and medium distance
UHF70 cm430 - 440local
* It should be noted that band conditions vary for many reasons and thus all of these bands can at times take on the characteristics of others. See the section on Propagation. This table should be considered a general guideline.

HF Bands

For amateurs who have an interest in long distance communication the HF (high frequency) bands will be of great interest. These bands offer propagation to all parts of the world at some time during the day, night or season. Do you want to talk to Japan from the east coast or Europe from the west? There will often be a time and a band where this communication is possible.


During a sunspot high cycle conditions are best for the higher HF frequencies and during a low the low frequencies are often in demand with all kinds of variation in between. Magazines such as QST and CQ Amateur Radio publish charts monthly that predict the best propagation to different areas of the world. These are just best guesses and will help you to choose your times and bands but there is no substitute for getting on the air.
Canadian and U.S. hams have different band allocations in the HF area although there is a lot of common ground. The following pages show a summary of the allocations in each country. For complete details go to the corresponding RAC or ARRL web site listed above.
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