I am wondering if this will work…

This is for receive only…. I have a mag mount antenna that I have
trimmed to around 19" for around 155 MHz (1/4 wave), I was wondering
about adding a 6.5" antenna next to it for UHF.

The antenna is screwed to the mag base on a 1/4 20 stud. My idea is to
take a 2 inch piece of flat steel and drill a 1/4 inch hole to mount
under the antenna. Then I will attach my 6.5" antenna..

|
| -- 19"
|
| |
| | -- 6.5"
|_|
|
|
|
| -- Coax
|
|


My other question has to do with grounding. I used my VOM to check and
see it the outer braid of the coax goes anywhere. I thought it might
ground to the magnet but this is not the case. The center of the coax
goes to the 1/4" stud on the mag mount but the outer braid seems to
not go anywhere.. is this right?

Thanks!

Fred