ground connections?

[caymann]

Here's my current setup...

I bought a Eagle One antenna. It's a vertical antenna at 31'. I mounted this on the bike rack in the back of MH.

I also bought a ICOM AH-4 tuner that i put inside the engine compartment and connected to the antenna

The radio (ICOM 7000) stays inside the MH in the living room area and i ran the power/control cables + 50' of LMR400 coax w/PL259s, through the length of the coach.

The radio has a RF ground port.
The tuner has a RF ground port.
The antenna has a ground port.
I have a 4' ground rod.

How do i connect all these grounds to:-
1. help a path to lightning to ground using ground rod but not get into tuner/radio.
2. help the tuner with a RF ground to get better SNR
3. help the radio with a RF ground to get better SNR
4. avoid any RF interference inside the MH that affects any DC ckts or AC ckts.

My thinking is:-
1. Connect antenna ground to ground rod and hammer it into ground. I have a 400W lightning arrestor in line.
2. Connect tuner ground to ground rod and keep it less than 9'
3. don't connect radio ground to anything as it's ground is connected to tuner via coax
4. Optionally, connect ground rod to chassis ground so MH can act as counterpoise (this is highly debatable)


Any thoughts/comments?

thanks
jim