
The actual frequencies for the ISS REPEATER are.
Uplink (your transmit freq) 145.990 tone 67.0hz
Downlink (your receive freq) 437.800
The thing is, you will need to compensate for the Doppler effect.
When ISS comes above horizon 437.900 — 145.987
Next. 437.850 — 145.989
Midway through pass. (Highest) 437.800 — 145.990
Next. 437.750 — 145.991
When ISS gets Down to the horizon 437.700 — 145.993
Ron Mahn KI5FR
Here is how to locate the next ISS flyover: