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The Equipment At The Remote Radio Site. Two Simoco SRM9005 Radios, No Control Head
Low band SRM9005,
no control head.
This radio receives
the selcall sequences
from base. It serves
only to pass them on
the high band radio.
This set doesn’t
change channel.
Standard Simoco Cross-link cable
plugged into the existing control
head socket on each radio
High band SRM9005.
Programmed with all
UKSAR channels
required. The
programming order
must be the same as is
in the Base radio.
The selcall sequence
received from the low
band radio is used by
this radio to change
the high band channel.
The low band radios
serve only as a link to
carry the channel
change selcall se-
quences and the Rx
and Tx audio for the
high band radio. Any-
thing transmitted on
the Base low band set
will be rebroadcast by
the remote high band
radio
Low band aerial
High band
aerial
LB
HB
Because a cross-band system is used where one radio is on a low band channel
and the other on high band, no diplexer is required. This means all UKSAR
channels are available to be used and there is no mutual interference between
the two radios.
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