1.25 metres: Difference between revisions
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(→Equipment: added back in the 7r. yes, trust me, it does.) |
(+6r... it does too, according to the download spec file.) |
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== Equipment == | == Equipment == | ||
Because 222 MHz is only available to amateurs in the United States, very little currently-manufactured equipment supports it; examples include the [http://www.eham.net/reviews/detail/1404 Alinco DR-235T], the [http://www.eham.net/reviews/detail/1739 Kenwood TH-F6A] and the U.S. | Because 222 MHz is only available to amateurs in the United States, very little currently-manufactured equipment supports it; examples include the [http://www.eham.net/reviews/detail/1404 Alinco DR-235T], the [http://www.eham.net/reviews/detail/1739 Kenwood TH-F6A] and the U.S. versions of the [[Yaesu]] [http://www.yaesu.com/indexVS.cfm?cmd=DisplayProducts&ProdCatID=111&encProdID=8D3254BFC69FB172D78647DC56EFB0E9&DivisionID=65&isArchived=0 VX-7R] and [http://www.yaesu.com/indexVS.cfm?cmd=DisplayProducts&ProdCatID=111&encProdID=4C6F204F6FEBB5BAFA58BCC1C131EAC0&DivisionID=65&isArchived=0 VX-6R] HTs. Many amateurs, especially those who do weak-signal work, use [[transverters]] on this band. | ||
== Modulation == | == Modulation == | ||
Revision as of 17:55, 16 March 2008
222 MHz to 225 MHz is an amateur band only in the United States.
Equipment
Because 222 MHz is only available to amateurs in the United States, 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 HTs. 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
Primarily line of sight, although enhanced modes do exist. There is no F2 propagation on this band, but troposphere ducting and aurora exist.