I’m working on a project involving
antenna installations on a navy ship. The specifications
call for using triaxial antenna cable, i.e. coaxial
cable with two separate AND insulated shields.
I’ve done a lot of antenna installations in
many sorts of environments and normally I use double
braided cable like RG-214 or foil+braid cable. This
normally satisfies all requirements for shielding
as foil+braid cable has a shielding efficiency of
I’ve been searching the internet
for more knowledge, and I’ve found some manufacturers
like Times that makes triaxial cable and others
like Trompeter and King that makes connectors.
The cable specs are not so impressive, they
seem to be equivalent to the foil and braid double
shielded coax. The pricing is however very impressive
Also the connectors look very expensive.
So what are the true benefits of using triax
for HF and VHF shipborne antennas? Has it got something
to do with EMP protection levels?
appreciate any input on this from someone more knowledgeable