[Ham-Mac] Fldigi Suggestion for 60 Meter RTTY

[Bob Nielsen]

On Mar 30, 2012, at 4:21 PM, Rick Prather wrote:

> Dick,
> 
> RTTY as we know it, is not allowed on 60 Meters.  
> 
> The reference to RTTY is for PACTOR III.
> 
> The two digital modes are PACTOR III and PSK31.
> 
> Rick
> K6LE

It's not quite that simple.  I don't have a copy of the R&O handy, but from http://www.arrl.org/60-meter-faq

• What Modes Can I Use on 60 Meters?-

Effective March 5, 2012  the FCC has permitted CW, USB, and certain digital modes on these frequencies. The National Telecommunications and Information Administration (NTIA) is the primary user of the 60-meter band.

The FCC Report and Order permits the use of digital modes that comply with emission designator 60H0J2B, which includes PSK31 as well  as any RTTY signal with a bandwidth of less than 60 Hz.

The Report and Order also allows the use of modes that comply with emission designator 2K80J2D, which includes any digital mode with a  bandwidth of 2.8 kHz or less whose technical characteristics have been documented publicly, per Part 97.309(4) of the FCC Rules. Such modes would include PACTOR I, II or III, 300-baud packet, MFSK, MT63, Contestia, Olivia, DominoEX and others.

On 60 meters hams are restricted to only one signal per channel and automatic operation is not permitted. In addition, the FCC continues to require that all digital transmissions be centered on the channel-center frequencies, which the Report and Order defines as being 1.5 kHz above the suppressed carrier frequency of a transceiver operated in the Upper Sideband (USB) mode. This is typically the frequency shown on the frequency display.

Bob N7XY

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