Martin OM8ARK in Košice caught that the transmitter on board the ISS should be active these days. You can hear what the NA1ISS signal looks like in the recording:
Repeater Uplink: 437.800 MHz FM
Repeater Downlink: 145.800 MHz FM
Doppler Shift is 10 KHz
Russian callsigns: RS0ISS, RZ3DZR
USA callsign: NA1SS
Keplerians for the ISS:
ISS 1 25544U 98067A 05364.00723160 .00023308 00000-0 16676-3 0 500 2 25544 051.6446 337.2396 0010935 095.6575 011.0998 15.73549098406500