In Channel Jumper
wrote:

And I am not aware of any supplier that would just
take the one back - USED and replace it with another new transceiver of
a different manufacturer.

On the other hand, Ten-Tec has a 30-day return policy for new gear (they
only sell direct).

http://www.tentec.com/pages/Return-Policies.html

--
Bert Hyman W0RSB St. Paul, MN