On Tuesday, February 2, 2016 at 6:43:02 AM UTC-8, shkdriver wrote:
Hey Group,
I've got a 1975 Std, Cirrus new to me. I am replacing the com radio and in the process I deleted a poorly done splice in the coax cable with a rg-58 solder end.
After the bnc end was installed, I measured the resistance between the center and shield leads, I measured 0.9 ohms,

Snip snip
Not too surprising. Look up Gamma matched antenna; the antenna is a dc short circuit.
Heinz