On Friday, August 19, 2016 at 12:53:20 PM UTC-7, wrote:
The terra is an older push button for each number. The far right number has only 0, 2, 5, 7 (which makes sense as it's 25khz spacing). The terminal 5 would be assumed for the 2 and 7.

Been there.
The issue is really which radio will fit where the wheel chock was.
Jim