General, Advanced and Amateur Extra classes: Like 17m this band also is quite narrow but worth investigating when conditions mean the band could be open. I have nothing more for you. The Japanese have charts for Amateur frequencies in Japan . Distances of over miles are very common, and greater distances can be achieved by those with good antennas. It is found that comparatively few radio hams use directional antennas and this means that average amateur radio stations are at less of a disadvantage. Typically this can be 3.
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HF Ham Bands and Frequencies
Stations using low-power FM may be heard towards the top of the band. By choosing the correct amateur band or allocation, it is possible for a radio amateur to maximise his opportunity of making the sort of contacts he or she requires. When overhead, moon bounce and satellite relay are also possible. In fact the IARU for Region 1 have recommended that contests and phone operation should be excluded from the band. However, this may only be short lived and it can be very selective in terms of location. These enhancements may only last for 10 to 15 minutes at maximum, and sometimes less.
However, it is worth taking a look above this, particularly in contests because stations may also be active in this sector. Radio amateurs may engage in satellite and space craft communications; however, the frequencies allowed for such activities are allocated separately from more general use radio amateur bands. Amateurs have sponsored the launch of dozens of communications satellites since the s. Back to Top Having Trouble? In the evening, as the levels of ionisation fall, the local signals will fall in strength, leaving long-distance stations to the west. QSO Abbreviation for a contact.
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HF Ham Radio Bands | HF Frequencies | Electronics Notes
Now is a good time to check your supplies and be prepared! QTH What is your location? Although rather narrow, it is still very popular and well worth investigating when conditions look promising. Maximum power, watts PEP. Then at night the distances over which stations can be heard increases considerably, but local stations fall in strength. As the afternoon wears on, openings further west may arise. In fact the IARU for Region 1 have recommended that contests and phone operation should be excluded from the band.
US Amateur Radio Frequency Allocations