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Rg8 is fine for jumpers. I use RG8/U because I prefer larger coax for jumpers and it's flexible for it's size and I use RG213/U for outdoor HF cable runs because it has better U/V properties to last longer outdoors.

You can mix and match RG8X and RG8 and 213 for jumpers and cable runs although I would suggest the antenna cable run be one long piece to the antenna, balun, etc.

Don't get too hung up on cable spec's like velocity factors and DB loss on HF bands including CB. The LMR 400 type cables were intended for the much shorter wavelength VHF and UHF frequencies due to the higher losses where the RG8 types are for the broader frequency ranges below 30 MHz. Even LMR 400 is inefficient compared to 7/8 in. Heliax cable.

You can still use LMR 400 for HF.

[QUOTE="fourstringburn, post: 578014, member: 2920"] Rg8 is fine for jumpers. I use RG8/U because I prefer larger coax for jumpers and it's flexible for it's size and I use RG213/U for outdoor HF cable runs because it has better U/V properties to last longer outdoors. You can mix and match RG8X and RG8 and 213 for jumpers and cable runs although I would suggest the antenna cable run be one long piece to the antenna, balun, etc. Don't get too hung up on cable spec's like velocity factors and DB loss on HF bands including CB. The LMR 400 type cables were intended for the much shorter wavelength VHF and UHF frequencies due to the higher losses where the RG8 types are for the broader frequency ranges below 30 MHz. Even LMR 400 is inefficient compared to 7/8 in. Heliax cable. You can still use LMR 400 for HF. [/QUOTE]

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