I would question that statement. If it's a remotely controlled station (commonly called a Remote Base), it can operate anywhere. It's only the CONTROL LINK that must be in an 'appropriate' band segment (or via phone). SkyCommand is a good example of that. The remotely controled station operates anywhere on HF.
In the case of a remote base on a repeater, the repeater frequencies double as Auxiliary Frequencies and it is legally identical to SkyCommand. The only difference is that both AUX frequencies are duplexed in the same band. There are simply too many clearly legal examples that contradict what the ARRL guy said. Joe M. Brian Romine wrote: > > Even though according to one ARRL > official "if a repeater is linked in any manner to 10m; the 10m > frequency must be within the 10m repeater sub-band."