I recently started toying with the idea of operating mobile. After doing a lot of research online it seems the absolute best way to do this is to drill a hole and have a NMO mount installed. Knowing this I started thinking about buying a 2nd vehicle just for this purpose. The car I have now I purchased new at the end of 2012 and it didn’t seem right to do this as I was concerned with water leaks or rusting. It turns out that a couple of shops around me that specialize in 2-way radio will install a NMO mount for reasonable price. Where I’m not willing to try on my own, I am willing to defer to the experts. I decided having a shop that specializes in this would be the way to go.
Before doing this however I decided it would be a good idea to do a prototype and see how things worked. Before committing to drilling a hole in my car I wanted to know it would be worthwhile. I bought a 5-inch mag mount and several of the MFJ hamsticks. W5TOM’s website was extremely helpful in understanding what would work for this. I put a the 20 meter antenna on the mag mount and hooked it up to my analyzer. (Keep in mind I was operating parked. I do not recommend a hamstick on a mag-mount while driving!) With nothing grounded but the mag mount it was resonant around 13.5 MHz, and at 14.074 it was in the 3.5:1 range for SWR. I hooked up my tuner and very crudely hooked up a ground strap. It was placed between a piece of plastic and the metal hook that the back hatch latches to. The plastic held it in place. With the tuner I was able to get everything in tune, and I hooked up my rig and my laptop to try some FT8.
What happened next blew my mind. I was at a local park where there isn’t any electricity and so there wouldn’t be the high noise floor I’m used to. I figured I would probably need to adjust the antenna since it had such a high SWR and mag mount and all that, but I figured let’s see what happens first. There was no noise floor, and before I knew it I had over 20 contacts and had added 3 countries to my list (Brazil, Argentina, and the Canary Islands). This blew my mind, I have a park not far from my place that I can get to most of the year, and with a far less than ideal antenna setup I just worked the world. The only limiting factor was my laptop and gel batteries, but I got over 2 hours of non-stop FT8.
Knowing this, the NMO mount is happening. I am going to contact a couple of shops around the Twin Cities and see what prices are. I’ve been looking at what mounting options to use and I’m excited to get it installed. I can’t wait to have a permanent install in my car.