SIMPLEX REPEATER
Two way radio range extender
very easy to operate
installs in seconds
Built in monitor speaker, hear what the radio is
receiving !!
Stores and retransmits up to 60 seconds of
received speech. ( most only do 30 seconds )
Will interface with almost any radio ( may need adapter plug to suit radio) i.e see uniden explanation below )
I will attempt to document the connections of the various radios (prs or
otherwise) however see the motorcycle
communications for other PRS radio connections . if you
wish to make up your own adapter/interface cable ......see info
below.
The configuration of the two parallel 2.5mm stereo sockets are tip Mic
, ring speaker and sleeve, common earth .
This unit is a small (83mm X50mmX25mm) , microprocessor
controlled simplex repeater based on the ISD2560 voice storage chip running at a
sampling frequency of 8 KHz! so the stored and replayed audio is of very good communications
quality! It is designed to interface with any two way radio
with a speaker/mic audio accessory jack . The simplex repeater will extend
the range of any low power two way radio by being paired with a radio on
the same channel, as a intermediary placed at the highest common point between
the two radios on the same channel . The simplex unit records the
received the audio from the two way radio and when finished
receiving , enables the transceiver PTT and plays back the recorded
message into the mic socket of the transceiver, when the replayed message has
ended, it places a "cosmetic" end of message "BEEP",(
NOTE: some firmware
versions only !) (this allows the listener to
know the message was actually repeated) then it allows the transceiver to return
to receive mode for the next recording . The unit is fully automatic ,
runs on 4 AAA alkaline cells, draws less than 33mA when actually
repeating , When not in use , the unit will
drop back into "sleep mode", I measured 1.3mA standby current. That extends its battery life and
depending on its frequency of use, will run for days/weeks. If you don't
wish to use internal batteries, It has the
facility for an external power source 8-14 v DC centre pin positive,
supplied with a headset earphone/mic and Radio Plug adapter
described as 2.5mm stereo ,tip mic, ring speaker and sleeve common .
The
other end is a 2.5mm mic plug (tip positive) and 3.5mm speaker plug,
spaced at 10mm. (The repeater comes supplied with the internal circuit diagram, only
when purchased ) ,the unit is not water proof .
Simplex repeater connected to Uniden 040 ( requires mic cable swap over)
Note: (tip on the Uniden is EARTH and sleeve is AUDIO..... this is the reverse
of most handhelds)
With the repeater interface cable supplied (2.5mm and 3.5mm speaker
@10 mm centres ), mic tip is audio and
sleeve is earth !( enables immediate use with GME TX610 or TX630 radios !)
price NZ$ 112.00 ( Repeater doesn't include PRS radio in picture)
Pinfold Health Services Ltd,1172 Arawa st, Rotorua 3201,New Zealand. ph +64-7-3488850 fax +64-7-3486555 pinfold@xtra.co.nz