RG316 coax, shown below, is perfect for making up patch leads, building baluns and more. This 50 ohm coax is thin, flexible and will take a considerable amount of power. I’ve also bought a crimping tool. The tool is suitable for SMA plugs plus many more RF connectors.
RG316 Attenuation in dB per 100 feet
|MHz||dB per 100 feet|
I use RG316 patch leads for long, medium and short wave receivers. The loss at these frequencies, as shown by figures above, is negligible when using a couple of feet of this coax.