Motorola HT1250LS+ 用户手册

Welcome to Motorola’s HT Series family of radio 
users. This user guide supports HT1250•LS+

™ 

radios. These radios combine the very latest in 
two-way technology while delivering outstanding 
functionality at the touch of a button.

HT1250•LS+ portable radios operate on UHF/
VHF PassPort, LTR Trunked, and 
Conventional radio systems.

Contact your Motorola dealer for a list of 
features available with your radio.

Trunked systems allow a large number of users 
to share a relatively small number of 
frequencies or repeaters without interfering with 
each other. The airtime of all the repeaters in a 
Trunked system is pooled, which maximizes 
the amount of airtime available to any one radio 
and minimizes channel congestion. 

PassPort is an enhanced trunking protocol 
developed by Trident Micro Systems that 

supports wide-area dispatch networking. A 
network is formed by linking several Trunked 
sites together to form a single system. This 
offers users an extended communication 
coverage area. In addition, users with 
PassPort-enabled radios can seamlessly roam 
among all sites within the network. Seamless 
roaming means that you do not have to 
manually change the zones on your radio 
when roaming from site to site.

LTR is a transmission-based trunking protocol 
developed by the E. F. Johnson Company for 
primarily single-site trunking applications. In 
transmission trunking, a repeater is used only 
for the duration of a single transmission. Once 
a transmission is completed, that repeater 
becomes available to other users. This means 
that a conversation comprised of many 
transmissions may occur over several different 
channels within the LTR system. This method 
of trunking provides system efficiency by 
making repeaters available to all users after 
every transmission.