Hello, I am going to be making some adaptor harnesses for my HT, they are
going to have a PL-259 on one end and a SMA male end on the other, my
question is are the center conductor's inside the RG-58 and RG-174 the same
diameter because I see all the jumper harness's that are available
commercially made of RG-174, but when I see DIY pages they are made of
RG-58, and I just want to make sure. I read that RG-58 has alot less loss
and is cheaper. Thanks

RG-58 has lower loss than RG-174, because RG-58's center conductor is
larger in diameter than RG-174s. You'll need to buy SMA connectors
which are specifically designed for RG-58 - this cable won't fit into
an SMA connector made for RG-174.

Because of its larger diameter, it's also likely to be stiffer than
RG-174. This means that it could put more stress on the HT's SMA
socket, if the harness is pulled or pushed sideways.

The lower loss in RG-58 isn't likely to make a significant amount of
difference for a short harness, at least not at 2-meter frequencies.

--
Dave Platt AE6EO
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