![]() These new rules become effective in March 2012, but they leave existing (unmodified) radios with an outdated channel set. Recently, the FCC changed the grant to loosen the restrictions a bit and replaced one of the channels with a different one to avoid interference. Yaesu did this in their FT-8x7ND rigs by pre-programming special channels into the memory and restricting transmission on 60 meters except while on one of those memories. Recent HF rigs have enabled use of these channels by taking steps to ensure than an unsuspecting operator does not accidentally transmit elsewhere in the band, or with anything other than upper sideband. Unlike most other allocations, these are restricted to phone emissions in upper sideband, with a maximum of 50 watts PEP. ![]() In the US starting in 2003, amateurs have had a secondary allocation of five specific channels in the 60 meter band.
0 Comments
Leave a Reply. |