Highland Ham wrote:

Question ; Would it be sensible to use RG58/U for 2.3 GHz sig (obviously
depending on length of that type of coax) I thought teflon type coax was
almost mandatory for that frequency.

Not really, but it is what I have available at present ! Teflon vs
polyethylene isn't reallly that important with regard to frequency...it
is more a question of quality of the shield, I think. I suppose
polyethylene insulation will tend to melt while soldering connectors so
it is more likely that an impedance bump will occur due to the centre
conductor being off-centre. Non-solid insulation would have less loss
but this has to survive being passed through car-door seals.

It is probably a good thing these things have been discontinued, too.
I found it impossible to assemble without special jigging to prevent
the insulation from melting and swelling up while soldering the pin,
blocking the assembly. Teflon insulation would behave better I
suppose.

With one end kluged into shape with a hot knife and the other end
soldered with the insulation wrapped with aluminum tape, the return
loss of the cable and a good load measures around 27 dB or better
(probably beyond the accuracy limits of my test setup), so they work OK
regardless of the kluges.

Steve (VE3SMA)