Heathkit DX 60B Schematic 2

Page 1

V'l

V2

6CL6
VFO CR STAL ecu, a DRIVER BAND SWITCH
INPUT Y REAR WAF R
G SWITCH CRYSTAL OSCILLATOR 47 E FINAL
GE, LLIILF
6 H VARIES WITH
_ WITH 0 DRIVER c '00 a) /
- Cl ® 9 CRYSTAL L/ PLATE [(IJIJ-F 5
7-: W ACTIVITY 9 9 = AOMETER 09 | 6/3
.OOI , ////a,, CS C 7
@ // 4'. 24 90 o .005 .005 2| H MH H03!
1 1' ' 6 '1 HI: =
l 0 godly/[fig 0 R5 -
9 I000 '-
- W _ an: = C/4
7 5 p; -- R4 ' -' - 0/2 .005
x. x3 x2 I. - .33 'éw I. gag I --
r w H I? Rzz R
C: III-L ; _ I 25K AW 6800 __ 820R 820D. ZOI
H.005 - - = DRIVE LEVEL 2W :-
92 1 I
33K I92! GRID
R20 33" -��33 METER
__ 470K SWITCH
= = +| 35'0"
W I 20 V4
63, 922 SDETT
.005 V5 MODULA OR 925
IMEG 7 -
Ian7
SPEECH *-
AMPLIFIER .-
MIKE C30
m7 \ ,
mgm 4700 00' ® \ m9 3
l / 4
IOOK C32 \
@AUDIO
= mg I60? ma GAIN l-OO' L .
' MEG IIIIF 2'2 EC 928 FUNCTION I
I0 F SWITCH :
REAR LU
I
1
KEY JACK
NOTE&
ALI. RESISTOR VALUES ARE I/2 WATT UNLESS SPECIFIED OTHERWISE.
2 ALL RESISTOR VALUES IN OHMS; K : I000. MEG = 1,000,000.
ALL CAPACITOR VALUES IN Mfd UNLESS SPECIFIED OTHERWISE.
ALL SWITCHES, EXCEPT THE CRYSTAL SWITCH, ARE VIEWED
FROM THE REAR. THE CRYSTAL SWITCH IS VIEWED FROM THE
. I!) SHAFT END.
Schemuhc 0f the HEATHK" FUNCTION SWITCH SHOWN IN OFF POSITION.
BAND SWITCH SHOWN IN 80 METER POSITION.
AMATEUR TRANSMITTER INDICATES VOLTAGE READINGS.
V LTAGES TAKEN WITH FUNCTION SWITCH IN AM POSITION.
Model D X - 6 O B VOLTAOES TAKEN WITH AN II MEGOHM INPUT METER. v3
VOLTAGE READINGS ARE DC UNLESS SPECIFIED OTHERWISE. <
VOLTAGES MAY VARY $1034.. ewe
VOLTAGES TAKEN WITH DUMMY LOAD CONNECTED.
l XI -0

V1
6CL6

OSCILLATOR

V 2
6CL6

DRIVER

V3

6146 FINAL
AMPLIFIER

LON-PASS
FILTER

IZAXY SPEECH
AMPLIFIER

GRID BLOCK KEYING

V4

6057 CARRIER

CONTROL
MODULATOR

300 VOL TS

BLOCK DIAGRAM

-l30 VOLTS

POWER SUPPLY
d600 VOLTS L

6.3 VOLTS AC
FILAMENT