Another small point; the diameter of the antenna affects bandwidth. The ELT antenna is small in diameter and therefore has very little bandwidth.
i.e. The further you get away from 121.5 Mhz., the less the gain of the antenna.
Bottom line; Not a very good idea.
Mel Asberry..DAR since last century
A&P/EAA Tech Counselor/Flight Advisor
Specializing in Amateur-Built and Light-Sport Aircraft
North Texas (8TA5)
RV-6 Flying since 1993, 172hp O-320, 3-Blade Catto (since 2003)
Legend Cub purchased 12/2017
FRIEND of the RV-1
Eagle's Nest Mentor