Kenwood TK-80 Service Manual page 25

TK-80
Pin No. Pin Name Port Name
10 B7 O3
11 B6 O2
12 B5 O1
I/O Port Expansion: BU2099FV (TX-RX unit IC15)
Pin No. Pin Name Port Name
6 IF1 Q0
7 IF2 Q1
8 IF3 Q2
9 IF4 Q3
10 AGS Q4
11 NBS Q5
12 RBK Q6
13 PL Q7
14 AIP Q8
I/O Port Expansion: BU2099FV (TX-RX unit IC16)
Pin No. Pin Name Port Name
6 AM Q0
7 SSB Q1
8 SCB Q2
9 NC Q3
10 VOXS Q4
11 PMU Q5
12 VCAS Q6
13 ABK Q7
14 MMU1 Q8
15 MMU2 Q9
Band Data Decoder: BU2099FV (Final unit IC4)
Pin No. Pin Name Port Name
6 18AT Q0
7 LPF6 Q1
8 LPF5 Q2
9 LPF2 Q3
10 LPF1 Q4
11 28AT Q5
12 24AT Q6
13 21AT Q7
14 LPF3 Q8
15 LPF4 Q9
24
SEMICONDUCTOR DATA
RX band select 7. ON: 14.5MHz≤f<21.5MHz, OFF: Other
RX band select 6. ON: 10.5MHz≤f<14.5MHz, OFF: Other
RX band select 5. ON: 8.0MHz≤f<10.5MHz, OFF: Other
IF filter selection. ON: 6.0kHz selection, OFF: Other
IF filter selection. ON: 2.7kHz selection, OFF: Other (option)
IF filter selection. ON: 2.2kHz selection, OFF: Other
IF filter selection. ON: 0.5kHz selection, OFF: Other (option)
Selection of constant during AGC. ON: AGC fast, OFF: AGC slow
NB setting. ON: NB off, OFF: NB on
RF blanking. ON: RBK on, OFF: RBK off
VSFM, VSRM op-amp gain selection. ON: Low gain, OFF: High gain
AIP setting. ON: AIP on, OFF: AIP off
Mode selection. ON: During AM mode, OFF: Other
Mode selection. ON: During SSB mode, OFF: Other
Mode selection. ON: During SSB mode or CW mode, OFF: Other
Not used (usually ON)
VOX setting. ON: VOX on, OFF: VOX off
AF blanking during power supply OFF. ON: ABK on, OFF: ABK off
VCA selection. ON: VR, OFF: D/A
AF blanking. ON: ABK on, OFF: ABK off
Microphone mute 1 (input side). ON: Normal, OFF: During microphone mute
Microphone mute 2 (output side). ON: During microphone mute, OFF: Normal
Selected for 18AT. ON: 14.5MHz≤f<19.0MHz, OFF: Other
Selected for LPF6. ON: 21.5MHz≤f, OFF: Other
Selected for LPF5. ON: 14.5MHz≤f<21.5MHz, OFF: Other
Selected for LPF2/4AT. ON: 2.4MHz≤f<4.5MHz, OFF: Other
Selected for LPF1. ON: f<2.4MHz, OFF: Other
Selected for 28AT. ON: 27.0MHz≤f, OFF: Other
Selected for 24AT. ON: 22.0MHz≤f<27.0MHz, OFf: Other
Selected for 21AT. ON: 19.0MHz≤f<22.0MHz, OFF: Other
Selected for LPF3/7AT. ON: 4.5MHz≤f<8.0MHz, OFF: Other
Selected for LPF4/14AT. ON: 8.0MHz≤f<14.5MHz, OFF: Other
Description
Description
Description
Description