These pagers were available in the former POCSAG net by Deutsche Telekom AG and later by e*message. The HF part of the receiver is identical to Skypers. The modification for 439.9875 MHz is thus the same. The shortcome is that the display is much smaller and there is no built-in function for setting time and date autmatically. In addition the date only allows years up to (20)13 starting from (19)94 to be set. This has to be done by hand and is lost on longer absence of battery power.