Page 84
O
PERATING
M
ANUAL
P
HONE
P
ATCH
O
PERATION
Advanced Features
O
VERVIEW
Phone patch operation allows linking your
MARK-
V FT-1000MP
Field
to the public telephone line to pro-
vide two-way simplex communications for MARS op-
eration, or on behalf of a third parties. The
MARK-V
FT-1000MP
Field
may be used with the
LL-7
phone
patch unit installed in the optional
SP-8
external loud-
speaker, or with phone patch units from other manu-
facturers. The diagram at the bottom of the page shows
interconnection for the
SP-8/LL-7
combination; be sure
to consult the documentation provided with units of
other manufacture for installation instructions.
O
PERATION
Phone patch Tx/Rx switching may be done manu-
ally using the PTT method, or automatically using the
VOX circuit of the transceiver. While the PTT method
does not require balancing the bridge circuit in the
LL-
7
, it does require more work by the operator: switching
the microphone
PTT
or transceiver
MOX
button at each
“over” during patched conversations. Therefore, most
operators prefer to use the VOX method whenever the
telephone signal-to-noise level permits. If the telephone
noise level is high, however, the PTT method may still
be necessary, so you should become familiar with both
methods.
Regardless of which patch control method is used,
you may need to instruct the person on the telephone
to speak slowly at a clear normal voice, and to say
“over” and then keep quiet when they expect a response
from the other radio station. This serves as a notice to
you (if you are using PTT control) to switch to receive
while signaling the other station to go ahead and trans-
mit, and will help avoid “doubling” with the other sta-
tion.
During all phone patch operation you should moni-
tor both sides of the conversation at all times (this may
be required by law). This requires a telephone at the
operating position.
Refer to the
LL-7
Instruction Sheet for further de-
tails on phone patch setup and operation.
Note
You may need to contact your telephone company
for permission to connect another device to the
phone circuit. Also, you should use a proper 600
Ohm, three-way transformer if connecting the
LL-
7
with a telephone set to the same phone line.
MARK-V FT-1000MP
Field
SP-8/LL-7
REMOTE
B
A
ANT
KEY
BACKUP
LIN
CAT
DVS-2
BAND DATA
+13.8V
TRV TX GND
RX ANT
PACKET
RTTY
PTT
EXT
ALC
EXT
SPKR
PATCH
AF OUT
GND
OFF
OFF
IN
O U T
CW
SIDETONE
ON
A C C
ON
OUTPUT
DC 13.8V
200 mA
INPUT
DC 13.8V
20 A
INPUT
AC 100-120V ~
50-60Hz 6A
FUSE
T8A
DC IN
~ AC IN
E
X
T
S
P
P
A
T
C
H
R
A
D
IO
S
P
IN
P
U
T
A
G
N
D
MONI NULL
RADIO
BALANCE
SP
A
B
LINE OUT
INPUT
TELEPHONE LINE
CABLE A (Supplied w/LL-7)
CABLE B (Supplied w/LL-7)
Summary of Contents for MARK-V FT-100MP
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