Справочник Пользователя для ICOM ic-2720h
5
1
PANEL DESCRIPTION
New2001
■ Main unit
qDATA SOCKET [DATA]
Connects a TNC (Terminal Node Controller), etc. for data
communications.
communications.
• See p. 6 for connection information.
wMICROPHONE CONNECTOR [MIC]
Connects the supplied or an optional microphone.
q +8 V DC output (Max. 10 mA)
w Channel up/down
e 8 V control IN
r PTT
t GND (microphone ground)
y MIC (microphone input)
u GND
i Data IN
w Channel up/down
e 8 V control IN
r PTT
t GND (microphone ground)
y MIC (microphone input)
u GND
i Data IN
e CONTROLLER CONNECTOR [CONTROLLER] (p. V)
Connects the controller unit with the supplied cable.
rCOOLING FAN
Rotates while transmitting.
Also rotates while receiving depending on the setting in ini-
tial set mode. (p. 62)
Also rotates while receiving depending on the setting in ini-
tial set mode. (p. 62)
tANTENNA CONNECTOR [ANT]
Connects a 50
Ω antenna with a PL-259 connector and a
50
Ω coaxial cable.
ANTENNA INFORMATION
For radio communications, the antenna is of critical impor-
tance, to maximize your output power and receiver sensi-
tivity. The transceiver accepts a 50
For radio communications, the antenna is of critical impor-
tance, to maximize your output power and receiver sensi-
tivity. The transceiver accepts a 50
Ω antenna and less
than 1:1.5 of Voltage Standing Wave Ratio (VSWR). High
SWR values not only may damage the transceiver but also
lead to TVI or BCI problems.
SWR values not only may damage the transceiver but also
lead to TVI or BCI problems.
q
i
q
w
e
r
t
y u
i
IC-2720H.qxd 02.9.9 8:12 Page 5 (1,1)