5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
ANT
T/R SWITCH
XCVR
PTT
FROM
FILTER
HF PROJECTS
SWITCH
ON/BYPASS
FRONT
PANEL
LED
SO239
JACK
RG174 COAX
RCA
JACK
REAR
PANEL
BNC
JACK
RG174 COAX
REAR
PANEL
SPST
red
blk
FAN
red
blk
short pins
to turn on
for testing
or bias set.
(dual schmidt-trigger inverters)
HFPAV4R5
0
CONTROL HFPAV4R5
B
2
3
Friday, April 19, 2013
Title
Size
Document Number
Rev
Date:
Sheet
of
RF_IN
TX
SW_VOLTS
TX
IPS
PSU
+12V
+12V
+12V
+12V
VCC
+12V
VCC
+12V
+12V
VCC
VCC
VCC
VCC
Q6
2N5089
R21 1K
R22 1.2K
R11 1M
U3
4N33
1
6
2
5
4
R10 1K
Q3
2N5089
R12
1K
K2
3
2
4
6
7
5
1
8
K3
3
2
4
6
7
5
1
8
C13 .001
C12 .01
D2
1N4007
C11
.01
U1
78L05
1
3
2
VIN
GND
VOUT
C10
.01
J2
1
2
3
4
J6
1
2
C23
.1
R4
10K
R5 10K
J3
1
2
D3
1N4148
J5
1
2
3
4
R6 10K
R18
3K
U2
PIC16F688
5
2
3
4
14
6
7
8
9
10
11
12
13
1
RC5
RA5
RA4
RA3
Vs
s
RC4
RC3
RC2
RC1
RC0
RA2
RA1
RA0
VD
D
H3
TEST
1
2
U6
NL27WZ14DTT1G
1
6
3
4
5
2
IN1
OUT1
IN2
OUT2
VCC
GND
J4
CON3
1
2
3
H4
CW
1
2
Summary of Contents for PackerAmp V4
Page 65: ...APPENDIX A www hfprojects com vstamps comcast net 281 467 9424 ...
Page 76: ......