Is that "SOLID" copper center conductor or the Copper plated aluminum as
is the case with LMR400 these days...8^(
Dave
NR1DX
On 4/8/2021 5:43 PM, Jim Brown wrote:
On 4/8/2021 2:18 PM, Jim Garland wrote:
On a related topic, I’ve stopped using LMR400 and LMR400UF coax
completely for HF work, using instead trusty, old-time RG-213, with
its untinned copper braid.
I've used a LOT of Commscope 3227 and their PTFE plenum equivalent.
It's loss specs are the same as LMR400, solid #10 copper center,
pretty dense tinned copper braid over Al foil. Both solder quite well.
The PTFE plenum coax is smaller diameter, so I build it up with heat
shrink before mounting the 83-1SP connectors.
73, Jim K9YC
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