1.25 metres: Difference between revisions
(Changed "Central America" and "Caribbean" to "Central American nations" and "Caribbeans nations", since the sentence refers to countries.) |
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== Propagation == | == Propagation == | ||
222 MHz propagation is primarily line of sight, although enhanced modes do exist. There is no [[F2 layer|F2]] propagation on this band, but [[ | 222 MHz propagation is primarily line of sight, although enhanced modes do exist. There is no [[F2 layer|F2]] propagation on this band, but [[tropospheric ducting]] and [[aurora]] exist. | ||
Revision as of 12:55, 1 July 2008
| Band: 1.25m | |
| Bands | |
| 160m 80m 60m 40m 30m 20m 17m 15m 12m 10m 6m 4m 2m 1.25m 70cm 33cm 23cm 3cm | |
| Band Privileges | |
| US Extra | 222.000-225.000 |
| US Advanced | 222.000-225.000 |
| US General | 222.000-225.000 |
| US Technician | 222.000-225.000 |
| UK (all) | {{{UK}}} |
222 MHz to 225 MHz is an amateur band only in Region 2. Countries where 222 MHz operation exists include the United States, Mexico, Central American nations, Caribbean nations, and Brazil.
Equipment
Because 222 MHz is only available to amateurs in Region 2, very little currently-manufactured equipment supports it. Examples include the Alinco DR-235T, the Kenwood TH-F6A and the U.S. versions of the Yaesu VX-7R and VX-6R HT. Many amateurs, especially those who do weak-signal work, use transverters on this band.
Modulation
Like the 6 metre and 2 metre bands, operation is typically CW and SSB in the lower band and FM in the upper band.
Propagation
222 MHz propagation is primarily line of sight, although enhanced modes do exist. There is no F2 propagation on this band, but tropospheric ducting and aurora exist.