Heathkit GDA 1205 Schematic

Page 1

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MINES:

SCHEMATIC or THE
HEATHKIT®

MODEL GDA-IzOB-Z z

6-CHANNEL MODULAR R/C RECEIVER

1 ALL RESISYORS ARE lid-WATT UNLESS OTHERWISE
MARKED Ik = 100m.

CAPACITOR VALUES LESS WAR 1 ARE IN ME VALUES

10R GREAIER ARE IN VF UNLESS OIHERWISE NOIED. 7°
DNVCETOI
3. CD THIS SYMBOL INDICATES A POSITIVE nc 'fi!?l,"5lz°!. sum 1' :N'f'":
VOLTAGE MEASUREMENT WIIII ND SIGNAL eEINc I 1 «mm __l._
RECEIVED. 50%:an 1.71" ' 00 Ton Wm ]
I' EU
4. .. THIS svmsoL Is USED ON A PART IIIAI CHANGES I I, 1 u mun
VALUE DEPENDING ON THE FREQUENCY BAND IN T . .
voun RECEIVER. SEE IHE CHART "ALTERNAIE FREQUENCIES :D: 5M3}: I' w
AND PARTS." :46le - m
5. ALL VOLTAGES ARE MEASURED WITH A HIGH IMPEDANCE L. J

VOLIMEIER, FROM THE POINT INDICAIED IO COMMON
GROUND. VOLTAGES MAV VARV twin

6 REFER TO THE "STEP~BY~STEP ASSEMBLY" OR TO THE
CIRCUIT BOARD X-RAY VIEWS" FOR HIE IHYSICAL
LOCATION OF PARTS.

INTERCONNECTING DIAGRAM

Page 2

«MMMM *
RM -

MM mu LLLLLLLLLL.

'l COLLECTOR O5 2 BASE OF 06 3 COLLECTOR 06
.5 - 2.0V p-p 04V p-p 4.0V p-p

COLLECTOR 07 PIN 2 IC101 IC OUTPUT PINS 9-16

4 4.0V p-p , 5 6 (with servo connected)
4.8V p-p