TM 5-6675-318-14Table 9-2. METER AND AMATEUR RF BANDS - ContBANDIWIDTHDESCRIPTION11 m Band (25.6-26.1 MHz)Used for long-distance international broadcasts during heavy activity of solarspots.Like 13 m band, its condition changes from time to time. When condi-tions are good,r e c e p t i o n i s e a s y , a s t h e r e i s n e i t h e r n o i s e n o r i n t e r f e r i ngs i g n a l s.AMATEUR BANDS160 m Band (1.9 MHz)8040201510Also called “top band,”and among amateur bands it has longest wavelength. Itis good for short-distance transmissions.m Band (3.5 MHz)This band is generally used for short-distance broadcast. However, dependingon season and time, it can be used for DX traffic communication.m Band (7 MHz)When solar spots are least active, this band is most efficient for DXcommunications.However, its allotted bandwidth is narrow and it is suscepti-b l e t o i n t e r f e r i n g s i g n a l s .m Band (14 MHz)Also called “amateurs’ main band.”Its listening area changes with time andseason.It can be used as world-wide traffic communication band, and it isusually possible to receive broadcasts from every country.m Band (21 MHz)When solar spots decrease, DX station and traffic communication signals ared i f f i c u l t t o r e c e i v e .When spots are active,i t i s p o s s i b l e t o r e c e i velow-power DX stations as surprisingly strong signals.m Band (28 MHz)Among amateur bands, this has one of higher frequencies (HF). This band hasboth HF and VHF characteristics and more features than 15 m band. When solarspots are active, You can tune into every distant DX station.9-46
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
