N2EY wrote:
(Dennis Ferguson) wrote
determining compliance with the regulations. In this case, the builder
is expected to employ good engineering practices to meet the specified
technical standards to the greatest extent practicable. The provisions
of Sec. 15.5 apply to this equipment.

I'd say the provisions of Sec 15.5 are quite restricting, though....

It depends on the particulars of the application, and one's good luck,
I guess, since 15.5's primary effect is to make it uncertain whether
or not a Part 15 device will be (and will continue to be) usable. Given
the bizzilions of Part 15 transceivers sold to people who seem happy with
their purchase, however, it is clear that many have suffered no constraints
from 15.5 which bother them. For some applications the probability of
being constrained by 15.5 seems to be pretty small in practice.

Note too that the ARS is also (though differently) constrained with
respect to applications, particularly by 97.113 and 97.115. Whether
the ARS restrictions or the Part 15 restrictions are more onerous
depend a lot on what use you want to make of the devices you build.

Dennis Ferguson