See what Jerry says - but the top looks like there's a metal "something" above the nylon bushing that could be making ground contact...
CB SWR level is extremely high
- Thread starter Chris
- Start date
Forget the pictures, just Ohm it out. From the connector on the opposite end of the cable, the center conductor to the antenna mounting bracket (your unpainted part) should be open-circuit. The center conductor to the chrome coupling nut should be short-circuit. The outer conductor on the connector should be the opposite, i.e., short-circuit to the mounting bracket and open-circuit to the chrome coupling nut.
The nylon goes into the mount to shield the bolt coming up from the bottom. The metal something is the "ring" that is supposed to contact the mount.
In this photo you can see the shoulder of the firering, but next to it there is also a metal portion as well. When installed, that metal portion touches the antenna mounting bracket. Is that an issue?
I have installed it per their instructions, so I am not sure what else (if anything) I could do differently.
I have used some markup to point out the metal portion next to the shoulder that makes contact with the mount.
I have installed it per their instructions, so I am not sure what else (if anything) I could do differently.
I have used some markup to point out the metal portion next to the shoulder that makes contact with the mount.
If I didn’t have the Savvy taillights and Savvy tub armor I would have gone this route.
Thank you for that - I got the nylon, but wasn't sure if the metal was supposed to be grounded or not. Not familiar with that mount.
You've got it mounted correctly.
Just need the antenna base grounded to the chassis.
Looks oriented correctly, insure that nylon insulator you can see in the second photo is centered in its hole in the bracket to prevent the threaded stud from touching the bracket which would short the antenna to ground.
Okay, at least we ruled that out. Time to ground the mount in that case, I ordered some wire braids so hopefully that will do the trick.
I ran the cable thru the tail light hole, up thru the tub thru the grommet in the left corner then up the roll bar.
I feel like your antenna cable on the hinge might get into harms way?
Yeah, I’m not sure, you may be right actually. This just seemed like the best place to mount it since MORryde offered the mount for the bracket. However, maybe what I should do is remove it and just use this mount and drill it right through the tub armor into the tub, then I would bypass all this ground bullshit, huh?
Run a ground strap between the bolt in the tub closest to the hinge and the closest nut of the mounting bracket. Then check it.
I doubt the MORryde carrier designers know or care about the first thing about the requirements of properly mounting CB antennas. Similar to Terraflex stupidly completely powder coating their antenna mounting brackets. It's not their business so they're unlikely to design anything properly where RF and antennas are concerned.
I agree with you, we will see how the ground strap works. If it still gives me trouble, I’ll yank it off the hinge and drill it into the Savvy tub armor.
Just did this and the SWR is 3 on channel 1 and 4 on channel 40.
That's dramatically lower than what it is when the tunable tip is on.
What does this mean?
Take the coil off and mount the antenna directly to the coupler on the mount. Redo the test and let me know the readings
Here are the SWR readings without the coil:
The SWR is 3 on channel 1 and 1.75 on channel 40 with the tunable tip installed but screwed all the way down.
The SWR is 3.5 on channel 1 and 3.25 on channel 40 with the tunable tip removed completely.
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