ISS Packet Digipeater is Now on 70 Centimeters

The Amateur Radio on the International Space Station (ARISS) packet digipeater aboard the ISS has been active for several days now on 437.550 MHz. The UHF frequency means users will have to make adjustments for Doppler on both uplink and downlink.

The change to 70 centimeters comes in the wake of a problem that has sidelined the Ericsson VHF transceiver, so the UHF model has been put into servic…

Posted in ARRL News.