PE3W18647 is a TNC male to SMA female cable using RG55 coax. This Pasternack TNC male to SMA female cable assembly uses a 50 Ohm TNC for connector 1 and a 50 Ohm SMA for connector 2.
Our male TNC to female SMA cable assembly uses a flexible cable type that is 53 Ohm. Pasternack PE3W18647 TNC male to SMA female cable assembly is constructed with RG55 coax.