Drake drake tr-7 operating sm free download

File name drake_tr-7_operating_sm.pdf

SERVICE MANUAL H. F. TRANSCEIVER BD. *t DESCRIPTION ASSY. # 1 LOW PaSSFilter Module 17.18.19.20 2 T/R Relay Part of LOW Pass Filter 2nd Mixer n7 VC0 High Pass Filter Module Up-Converter Transmit Exciter Digital Control 2nd lF/Audio Passband Tuning/Reference IFSelectivity IFSwitching or NoiseBlanker Translator - RIT 8 PTO SwitchinclCircuitry Power Amplifier Module PTO AUX-7 Connector PowerSupply/Regulator F I ~ 1-3 TR7 Module Locations . Fig. 2-1 Parent Board Pictorial (Top View) (See Page 2-6 for Circuit Side) Fig. 2-3 Parent Board Pictorial (Bottom View) Fig. 2-5 Digital Control Board Pictorial Fig. 2-9 Up-Converter Board Pictorial Fig. 2-11 VC0 Board Pictorial - TEST PI / 49 Fig. 2-13 Translator Board Pictorial Fig. 2-15 2nd Mixer Board Pictorial - Fig. 2-17 IF Switching Board Pictorial rork Scle naomr m Fig. 2-19 IF Selectivity Board Pictorial - Fig. 2-21 PB TIReference Board Pictorial Fig. 2-25 2nd IFIAudio Board Pictorial, Version 2 Fig. 2-23 2nd IF/Audio Board Pictorial Version 1 Fig. 2-27 Jumper Board Pictorial Fig. 2-29 ALC Board Pictorial Fig. 2-30 High Pass Filter Parent Board Pictorial -~ 2-83 Fig. 2-31 High Pass Filter Switch Pictorial (Front & Rear) Fig. 2-33 Low Pass Filter Board Pictorial (Bands 1-4) Fig. 2-34 Low Pass Filter Board Pictorial (Bands 5-8) Fig. 2-35 Low Pass Filter Switch Pictorial (Front & Rear) 2 Fig. 2-37 Power Supply Board Pictorial n R-? U>6 * Fig. 2-39 Power Amplifier Module Pictorial (wlPredriver Bd. # l ) Fig. 2-40 Predriver Board #2 Pictorial & Schematic 2-122 2-18. PTO 3. Remove the top two screws on each side holding the front panel to the side rails, and The Permeability-Tuned Oscillator (PTO)provides a loosen the bottom screws. 5.05-5.55 MHz injection signal to the synthesizer 4. Remove the bandswitch knob. circuitry of the TR-7. The VC0 (Section 2-5) tracks 5. Remove the two screws hol