[Elecraft] RF Cable From KX3 to KXPA 100

[Mark Goldberg]

For a 2 foot cable, I don't think the loss will be significant whatever
cable is used. Cable loss for RG8 is about 1.6 dB / 100 ft at 50 MHz. Cable
loss for RG8x is about 2.5 dB / 100 ft at 50 MHz. Cable loss for RG58 is
about 3.3 dB / 100 ft at 50 MHz. So 2 ft of each would be 0.03 dB or 0.05
dB or 0.06 dB, all insignificant. Connector loss is on the order of .1 dB
per connector. So, more important will be the quality of the connectors and
the quality of the cable shielding. I use way better cables than required,
so I would not be a good reference point, but I use a lab quality RG58C/U
cable containing a stranded center conductor (for flexibility) with two BNC
connectors and an adapter between my KX3 and amp. Don't buy cheap no name
cables from Amazon or eBay.

73,

Mark
W7MLG

On Sun, May 9, 2021 at 3:49 PM wb0m at flashdog.us <wb0m at flashdog.us> wrote:

> Hi Everyone,
>
> Quick question:  Should the coax from the KX3 to the KXPA100 be RG-8x or
> RG-8 (or the equivalents). The length will be two (2) feet.
>
> Tnx & 73,
>
> Jeff/wb0m
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