I'm going to build a QCX+ 40m cw radio for backpacking and I'm going to make a dipole with the florescent 26 AWG copper clad antenna wire from DX Engineering. I'm trying to keep weight and bulk down because I'm hoping for a multiple day and later multiple week hike with it. The dipole will probably be made with a BNC to banana post adapter as the center. What's the lightest, thinnest, and most flexible coax I can mount BNC connectors to without creating significant loss? I'm also wondering what to use, if anything, for end insulators. Any line used will be 550 cord because I have a bunch and use it for so much in my hiking gear anyway. I'm building this low power kit as a fun learning experience and if it doesn't work well, I won't be out a lot of money and I already have a full size base radio at home. I've only ever made coax with pl259 connectors and usually with RG8x but that seems a bit heavy and bulky for hiking. I just answered my own question. Crimp on BNC work fine with RG58 and that's as thin and light as I know you can get. Any ideas about light small end insulators or should I just tie cord directly to the ends for a portable antenna?