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3-7-9 RELAY CONTROLLER (BPF UNIT; IC102)
6
HF50A
Outputs the RX-A circuit bandpass fil-
ter group select signal.
Low : While receiving on 30–60 MHz.
7
AT12A
Outputs the RX-A circuit 12 dB atten-
uator control signal.
High : The 12 dB attenuator is ON.
8
AT6A
Outputs the RX-A circuit 6 dB attenu-
ator control signal.
High : The 6 dB attenuator is ON.
9
AT3A
Outputs the RX-A circuit 3 dB attenu-
ator control signal.
High : The 3 dB attenuator is ON.
11
DWSPA
Outputs the RX-A circuit split function
control signal.
Low : The split function is ON.
12
RMUTA
Outputs the RX-A circuit mute control
signal.
Low : While the RX-A circuit is muting.
13
TRVS
Outputs the transverter’s receiver cir-
cuit control signal.
High : The transverter is ON.
14
RSELA
Outputs receive antenna ([ANT 4])
select signal.
Low : [ANT 4] is selected.
16
VPR2A
Outputs the RX-A circuit 50 MHz pre-
amplifier 2 control signal.
Low : The pre-amplifier 2 is ON.
17
VDWA
Outputs the RX-A circuit 50 MHz cor-
rection amplifier control signal.
Low : The pre-amplifier 2 is ON
(Receive 50 MHz band).
Pin
Port
Description
number
name
3-7-10 RELAY CONTROLLER (BPF UNIT; IC401)
6
B0B
Outputs the RX-B circuit bandpass fil-
ter (0.03–1.6 MHz) select signal.
7
B1B
Outputs the RX-B circuit bandpass fil-
ter (1.6–2 MHz) select signal.
8
B2B
Outputs the RX-B circuit bandpass fil-
ter (2–3 MHz) select signal.
9
B3B
Outputs the RX-B circuit bandpass fil-
ter (3–4 MHz) select signal.
10
B4B
Outputs the RX-B circuit bandpass fil-
ter (4–6 MHz) select signal.
11
B5B
Outputs the RX-B circuit bandpass fil-
ter (6–8 MHz) select signal.
12
B6B
Outputs the RX-B circuit bandpass fil-
ter (8–11 MHz) select signal.
13
B7B
Outputs the RX-B circuit bandpass fil-
ter (11–15 MHz) select signal.
14
B8B
Outputs the RX-B circuit bandpass fil-
ter (15–22 MHz) select signal.
15
B9B
Outputs the RX-B circuit bandpass fil-
ter (22–30 MHz) select signal.
16
B10B
Outputs the RX-B circuit bandpass fil-
ter (50–54 MHz) select signal.
Outputs the RX-B circuit bandpass fil-
17
B10WB
ter (30–50 MHz and 54–60 MHz)
select signal.
Pin
Port
Description
number
name
Summary of Contents for IC-7800
Page 1: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 65 VOLTAGE DIAGRAM 67 Dec 2009 ...
Page 79: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 60 VOLTAGE DIAGRAM 64 Feb 2009 ...
Page 157: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 57 VOLTAGE DIAGRAM 59 Aug 2008 ...
Page 245: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 57 VOLTAGE DIAGRAM 59 Jul 2008 ...
Page 333: ...THE TRANSCEIVER i7800 SERVICE MANUAL S 14015HZ C1 2 Mar 2006 ...
Page 555: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 14015HZ C1 2 C 2004 2006 Icom Inc ...