Not sure what you mean by the "basement". In my experience (45+yrs of installing this stuff) a 9ft whip on a ball mount on the outside upper bed wall will outperform a shorter 3-4ft antenna on the cowl area. The 9ft whip will be somewhat directional toward the mass of the vehicle as in mounted on the driver side rear it will work better toward the passenger front direction. A cowl mounted antenna will favor the mass of the hood so a driver side cowl mount will work better off the passenger front side.Yeah I realize theres not a perfect antenna but I do want to optimize it as much as possible.
Also just to clarify a couple points
- If I used the 102" in my basement, I would put the ball mount on the side of the canopy - not interested in drilling holes in the bed of the truck itself....
- Most likely though, would be a cowl mounted CB antenna. I do like the 102 on my TJ, but not sure if it is truly beneficial over a mid-load antenna (which is why the question - especially considering the non-SSB radio I am considering)
- but if a 102 would net a better result overall than a cowl mounted mid-load antenna then that is a route I would consider
- The little puck GMRS antenna, if used, would go on metal (on the canopy not on the fiberglass top). But I am not sure if it really is any 'better' than a standard 1/4 wave antenna
- that being said, it also probably depends on the radio. If a puck antenna nets better results than a 1/4 wave on cowl, then I see it a possibility
- this also depends on if there is truly any benefit of the 575 over the 275. if the 275 with a cowl antenna nets the same result as a 575 with the puck antenna then mine as well go with the 275 since its smaller, easier to mount and cheaper
Looking forward to seeing those measurements! Its always been of interest since I use handhelds at work a lot anyway.
The extent you go to for a CB install also depends on your type of use. If its just for keeping in contact with others while offroading, that doesn't require the biggest and best antenna on a custom mount with huge ground plane. If CB is a major hobby for you and you like talking all over the world when the skip is in then you will be spending more and the install will be more complex.
I'm a big ham radio geek so all my personal vehicle installs are more elaborate than most plus I test and evaluate a lot of equipment and antennas so my stuff is set up to easily swap radios and antennas. So far I have three NMO mounts and one heavy duty HF/CB mount that will accommodate just about any antenna ever made.
A shortened puck GMRS antenna is a compromise and a simple 6" long wire whip will work a little better.