Specifications

11
23-Dec-2002
N:\PRODUC~1\PK-900\PK900PSK\PCBOAR~1\PK232P~1\PK900PS
4
Title:
Size:
TW P/N:
Date:
File:
Sheet of
A
Engineer:
Project:
Timewave Technology Inc.
R. Gawtry
1 4
3 6
PS
T1
XFMR
1 4
3 6
PS
T2
XFMR
Q2
MBT4401
16
9 8
11 6 13 4
1
K1
RELAY_DPDT
C1
.01 uF
D1
1N4004
JH1 DSP Cap bypass
J1
+12VDC
J2
Rx Audio
J4
J5
Sound card select - low for sound card
J6
Gnd
J3
RX Audio
J7
TX Audio
Radio 1 jack on PK-900
GND
Radio 1 Jack on PK-900
+12 VDC
From PK-900 PB0 - R253
Sound Card Speaker Out
Sound Card Audio in
From RX Audio out
To TX Audio in
From PK-900
From PK-900
From PK-900 Audio out
To PK-900 Audio in
RV2
500
R1
0
R2
10K
R9
10K
RV1
500
J8
PAD
J9
PAD
J10
PAD
D2
LED
R10
3.3K
3
2
1
84
U1A
OPAMP_DUAL
5
6
7
U1B
OPAMP_DUAL
R3
10K
R12
20K
R4
10K
C5
10 uF
C6
10 uF
C7
10 uF
C8
1 uF
JH3 RX Gain
R13
47K
JH4 RX Gain - default on
VI
1
ADJ
4
VO
2
VO
3
VO
6
VO
7
U2
LM317_SO8
R14
270
R11
1K
C9
1.uF
R5
10K
+12
+12
C10
10uF
C11
10uF
C12
10uF
C2
.01 uF
R15
47
C3
.01 uF
R16
0
R17
0
R6
10K
R7
10K
R8
10K
C13
470.0 uF
J12
PAD
Sound Card in audio level
R18
0
R22
620
or to DSP board in
Q1
MBT4401
R23
10K
+12
Sound Card Signal Ground
Sound Card Signal Ground