RF power output fail

Some day cabs are all steel, I delivered to the company that makes the components for FL for the cascadia and got to look at what's coming out of the presses, aluminum for some but a lot of steel,

 

I wish there were some way to know the performance ( range, SWR ) of this setup before spending the $100.00 and putting forth the effort to hook it up. I believe the new 2017 Freightliners are putting the mount in the back of the cab, and yes it probably isnt as good as the side of cab setup, its got to be better than the factory stock antenna. Did you know Freightliners reasoning for the integrated antenna system was for improved aeordynamics, really, didnt know a wilson 2000 antenna on top of the mirror resulted in so much wind drag, obviously Volvo isnt too concerned about it.

 

I just wonder about SWR readings because of reflect off of the cab and also the trailer blocking the signals. Thats why it has been recomended not to use coil antennas with short shaft , on the side mount, because the coil will be too close to the cab and will affect SWR and performance.

 

Why they just dont go back to mirror mount like the columbia model had and forget about it. Ive had three Volvos before I got into this Cascadia, and all three the stock antenna setup worked great, good SWR and good range, and the fuel mileage was alot better. I know there are several variables that influence MPG but I doubt Volvos mirror mounted antennas affect it much. If I still had a Volvo I would be a couple hundred dollars richer and could buy a new radio, LOL.

 

In the eBay listing from the link supplied on page one of this thread, the seller states that the rf power could fail the self test because of the low deadkey setting and this is normal.
(According to the seller.)

 

That was one of my initial thoughts, why do they set a low carrier, did they do a swing mod?

 

The eBay listing stated swing kit so, yes.