The Nordic Thingy:91 X™ is equipped with two Microwave coaxial connector with switch (SWF) RF connectors with an integrated switch (J1) for easy connection to laboratory equipment.
You can use a Murata adapter cable (part no. MXHS83QE3000) with a standard SMA connection on the other end for connecting instruments. The adapter is not included in the kit. The insertion loss in the adapter cable is approximately 0.5–1 dB.