For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/hamradio/openSUSE_Tumbleweed/hamradio.repo
zypper refresh
zypper install acfax
For openSUSE Factory ARM run the following as root:
zypper addrepo https://download.opensuse.org/repositories/hamradio/openSUSE_Factory_ARM/hamradio.repo
zypper refresh
zypper install acfax
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/hamradio/15.6/hamradio.repo
zypper refresh
zypper install acfax
For 15.5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/hamradio/15.5/hamradio.repo
zypper refresh
zypper install acfax