I have a Walston tracker setup, and I wish I could carry it with me when I chase on the bike. I have a little pack on the front handle bars that has room for a small pair of binoculars, and the Walston receiver.
The antenna is the challenge. I have the “scabbard” but am befuddled as to how to attach it to the bike such that it is protected, but available for tracking.
I use two small bungees and strap it to the front side of the handlebars. My Walston is the folding type. The break down version in the bag straps even neater.
I also use a fanny pack where the front number plate would go. It’s a 2 bottle. I put a bottle of water in one side, Walston rx on the other side. 10X50 binos in the center and an FRS radio. I leave the FRS on so my timer can yell at me if I’m following the wrong plane!