Page
41
of
72
Copyright 2021 FlexRadio. All Rights Reserved.
7 June 2021(FW:0.9.12, Utility: 0.9.12)
6.3.4.6 Unlisted Amplifiers
PTT
Connect
an
appropriate
cable
between
the
radio's
PTT
output
and
the
tuner's
PTT
Input
A
or
B
jack.
Most
radios
have
a
PTT
interface.
However,
it
is
essential
to
check
your
manual
to
determine
the
keying
voltage
and
current,
especially
with
older
radios.
The
Tuner
Genius
XL
PTT
lines
are
opto
‐
isolated,
but
they
will
not
tolerate
high
voltages
or
an
AC
voltage.
Therefore,
be
prepared
to
provide
a
keying
buffer
relay
designed
for
the
task,
like
the
Ameritron™
ARB
‐
704
amp
to
transceiver
interface.
i
–
Some
operators
choose
to
use
a
keying
buffer
in
all
cases
as
"insurance"
to
prevent
any
possible
damage
to
the
exciter
or
tuner
due
to
possible
transient
voltage
spikes
or
RF
ingress.
Band
Data
Most
radios
use
one
of
these
protocols
to
send
band
data
to
external
devices:
BCD
/
PTB
protocol
Connect
your
radio
or
band
decoder
to
the
BCD/PTB
Input
A
or
BCD/PTB
Input
B
connector
on
the
tuner.
This
connection
requires
no
additional
configuration
and
works
automatically.
Band
data
arriving
on
the
BCD/PTB
connection
overrides
other
sources.
See
section
14.2.7
,
PTB/BCD
Connector
Pinout,
for
additional
information.
The
restriction
described
in
section
6.3.1.4
,
Band
Data
and
Frequency
Measurement
based
restrictions,
may
apply.
CAT
protocol
Connect
your
radio's
CAT
output
to
the
CAT
Input
A
or
CAT
Input
B
connector
on
the
tuner.
Then,
configure
the
CAT
protocol
details
using
the
Tuner
Genius
XL
Windows
Utility
.
CI
‐
V
protocol
Connect
your
radio's
CI
‐
V
output
to
the
CI
‐
V
Input
A
or
CI
‐
V
Input
B
connector
using
a
3.5mm
TS
or
TRS
connector.
Configure
the
CI
‐
V
protocol
details
using
the
Tuner
Genius
XL
Windows
Utility
.
Frequency
Measurement
The
Tuner
Genius
XL
will
measure
an
RF
signal's
frequency
applied
to
one
of
its
inputs
and
automatically
switch
in
the
appropriate
inductor
and
capacitor
values.
This
band
switching
mode
often
requires
that
you
double
‐
key
briefly
before
the
transmission
to
allow
the
tuning
solution
switching
to
complete.
Also
see
section
6.3.1.4
,
Band
Data
and
Frequency
Measurement
based
restrictions,
in
this
case.
Please
proceed
to
section
6.5
,
Testing.
