Phone Patch Operation - Yaesu MARK-V FT-100MP Operating Manual

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.
MARK-V FT-1000MP Field
B ANT A
REMOTE KEY BACKUP
CW
SIDETONE
OFF ON
Page 84
P
HONE
A C C
BAND DATA
+13.8V RX ANT
IN
OUTPUT
DC 13.8V
200 mA
CAT
DVS-2 PACKET
P O
ATCH PERATION
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.
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.
DC IN ~ AC IN
INPUT
DC 13.8V
INPUT FUSE
20 A
AC 100-120V ~
T8A
50-60Hz 6A
TRV TX GND LIN
OFF ON
OUT
EXT
EXT
RTTY PTT ALC PATCH AF OUT
SPKR
GND
CABLE B (Supplied w/LL-7)
Note
TELEPHONE LINE
SP-8/LL-7
MONI NULL
RADIO
BALANCE SP
A B LINE OUT
INPUT
CABLE A (Supplied w/LL-7)
O
PERATING
M
ANUAL