Icom IC-2820H Instruction Manual - Page 31

Antenna Connector [ant2 Rx], External Speaker Jack 1 [sp-1], External Speaker Jack 2 [sp-2], Power

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PANEL DESCRIPTION 1 1 i ANTENNA CONNECTOR [ANT2 RX] (p. IX) Connects a 50 Ω antenna with a PL-259 connector and a 50 Ω coaxial cable for diversity reception. o EXTERNAL SPEAKER JACK 1 [SP-1] Connects an 8 Ω speaker. Outputs audio from both left and right bands when no external speaker is connected to [SP2]. See the table at right for details. • Audio output power is more than 2.4 W. ANTENNA INFORMATION 2 For radio communications, the antenna is of critical impor- 3 tance, to maximize your output power and receiver sensitivity. The transceiver accepts a 50 Ω antenna and a 4 Voltage Standing Wave Ratio (VSWR) of 1.5:1 or less. High 5 SWR values not only may damage the transceiver but also lead to TVI or BCI problems. 6 7 !0 EXTERNAL SPEAKER JACK 2 [SP-2] • Speaker information 8 Connects an 8 Ω speaker. Outputs right band's audio only. • Audio output power is more than 2.4 W. Connected speaker Left band audio Right band audio 9 !1 POWER RECEPTACLE [DC13.8V] Accepts 13.8 V DC ±15% with the supplied DC power No external speakers [SP-1] only Internal speaker (mixed audio) External speaker (mixed audio) 10 11 cable. [SP-2] only Internal speaker External speaker 12 NOTE: DO NOT use a cigarette lighter socket as a power source when operating in a vehicle. The plug may cause voltage drops and ignition noise may be su- 2 external External speaker via External speaker via 13 speakers [SP-1] [SP-2] 14 perimposed onto transmit or receive audio. 15 16 17 18 19 10

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10
1
PANEL DESCRIPTION
1
2
3
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5
6
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8
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19
i
ANTENNA CONNECTOR [ANT2 RX]
(p. IX)
Connects a 50
Ω
antenna with a PL-259 connector and a
50
Ω
coaxial cable for diversity reception.
o
EXTERNAL SPEAKER JACK 1 [SP-1]
Connects an 8
Ω
speaker. Outputs audio from both left and
right bands when no external speaker is connected to [SP-
2]. See the table at right for details.
• Audio output power is more than 2.4 W.
!
0
EXTERNAL SPEAKER JACK 2 [SP-2]
Connects an 8
Ω
speaker. Outputs right band’s audio only.
• Audio output power is more than 2.4 W.
!
1
POWER RECEPTACLE [DC13.8V]
Accepts 13.8 V DC ±15% with the supplied DC power
cable.
NOTE: DO NOT
use a cigarette lighter socket as a
power source when operating in a vehicle. The plug
may cause voltage drops and ignition noise may be su-
perimposed onto transmit or receive audio.
• Speaker information
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
Ω
antenna and a
Voltage Standing Wave Ratio (VSWR) of 1.5:1 or less. High
SWR values not only may damage the transceiver but also
lead to TVI or BCI problems.
Connected
Left band audio
Right band audio
speaker
No external
Internal speaker (mixed audio)
speakers
[SP-1] only
External speaker (mixed audio)
[SP-2] only
Internal speaker
External speaker
2 external
External speaker via
External speaker via
speakers
[SP-1]
[SP-2]