Yaesu Plug-In Modules FTD-7
DTMF Paging Unit, for FT-270R
The VX-120 and FT-270R allows you to utilize a DTMF (Dual-Tone, Multi-Frequency) tone encoder/
decoder, with a dedicated microprocessor providing paging and selective calling features
now that you've installed the optional FTD-7 DTMF Paging Unit. This capability allows
you to make a call to a specific station (Paging), and to receive calls of your choice di-
rected only to you (Code Squelch).
The paging and code squelch systems use 3-digit numeric codes (000 - 999) which are
stored in the DTMF Pager Memories. Basically, your receiver remains silent until it re-
ceives the 3-digit DTMF pager code that matches those stored in the DTMF Pager Memory.
The squelch then opens so the caller is heard, and the LCD displays the 3-digit DTMF
pager code which was received. Also, the paging ringer immediately sounds, if the Bell
function is activated. When you close the PTT switch to transmit, the 3-digit DTMF pager
code which is stored in the last selected DTMF Pager Memory register will be transmitted
On the paged radio, the squelch will close automatically five seconds after the incoming
page ends (you may now resume DTMF Pager operation).