On 21 Feb 2020 at 23:04, Seannon Baker (AG0NY) wrote:
This is why I question the legalityThe copy of the ARRL "US Amateur Radio Bands"
chart that I have, dated 4/25/2017, says:
"Permitted operating modes include upper sideband
voice (USB), CW, RTTY, PSK31 and other digital modes
SUCH AS [capitals are mine] PACTOR III."
The "such as" clearly does NOT restrict the modes
to only those digital modes specifically listed.