The N plugs and sockets from Diode Comms (SSB Electronics) suffer from
a design fault. The centre pin is not fully captive and can therefore
float backwards inside the connector. This is a result of movement in
the ECO-10 cable between the dielectric/foil and braid/sheath. This
can give rise to a failed or poor (lossy) interconnection as the pin is
shoved back by the force of connecting it to the mating connector.

I have decided to fit the PL-259 connectors instead. These have
compression gland and top hat fitting, the centre pin is rigid and
does not float. This will limit operation to VHF, ECO-10 is rated to 6
GHz. The alternative is to find a suitable 10 mm N connector that has
a centre pin which will accept a 3mm centre conductor.

Norrie