Albrecht GP 1 Service Manual

Albrecht GP 1 SERVICE MANUAL GPS + PMR PORTABLE HANDHELD RADIO 24. 04. 2002 ALAN Electronics GmbH

3.4 Setting and Operation 3.4-1 Common function setting 1) Mode setting You can activate the GPS only / PMR only / PMR+GPS / mode. Defa

- In the Standby page, press the Up/Confirm/Down Button (#6) briefly to enter to the Basic mode. - When channel is highlighted, press

Press the Up/Confirm/Down button (#6) to confirm your selection. 5) VOX selection mode The Voice Activated Transmission (VOX) function all

8) ROGER SELECTION MODE If Roger option is on, when you finish the transmitting automati- cally the ALBRECHT GP 1 make a beep sound and tr

e) Connect AF oscillator to MIC terminal for conform modulation degree. f) Adjust the frequency of AF oscillator to 1kHz and adjust AF level

C) The Conform of Rx sensitivity 1) Adjust SSG to channel frequency. 2) Adjust modulation frequency, 1kHz to modulation degree, 1.5KHz. 4)

Run out of battery or charge problem. Fault of PTT key. Fault of Q4, Q5, Q6. Transmitter works but frequency is unmatched

C81, C75, VC1, L1, C74, C76. VCO control voltage through loop filter adjusts frequency and Microphone signal through Modulation termina

It has RF signal through L7, L8, SF1, SF2 and Q1 RF signal from Local oscillator mixed. It develops 1'st IF 21.7MHz. 1st IF goe

5.3-1 Audio Modulation and Audio Amplification Audio signal produced by external or internal microphone, limits amplification by IC U7.

CONTENT 1. GPS(Global Positioning System) 2. PMR(Private Mobile Radio) 1. GENERAL 1.1 General 1.2 Characteristic 1.3 Composition 2

3. BLOCK DIAGRAM

4. SCHEMATIC

5. COMPONENT PARTLIST Revised: February 15, 2002 JGP-2002.SCH Revision: 1.0 Bill Of Materials Feb

14 37 C26,C28,C33,C34,C51,C61, 104 C83,C98,C113,C114,C115, C121,C125,C129,C138,C139,

7. CHANNEL DATA 1. GPS(Global Positioning System) 1.1 PRODUCTOR : JRC 1.2 MODEL No : ALBRECHT GP 1 1.3 GPS ENGINE SPEC (ATTACH FILE) 2. PMR(

62 3 FB1,FB2,FB3 120 63 1 GANT 1575 64 1 J4

106 4 TH1,R33,R37,R65 220 107 2 R14,R39 22 108 8 R16

6. ASSEMBLY DRAWING

7. CHANNEL DATA CH TX FREQ CH 1’st Local 1 446.00625 1 424.30625 2 446.01875 2 424.31875 3 44

2. SPECIFICATION 2.1 GENERAL SPECIFICATIONS a) Frequency Range : 446.00625 ~ 446.09375MHz b) Output Impedance : 50 Ohms unbalanced c) M

3. OPERATION 3.1 Key Name FUNCTIONS AND CONTROLS 1) Antenna 2) Push-To-Talk (PTT) Button 3) Monitor Button 4) Mark &

3.2 ICONS on LCD 132 * 64 dots with ICONS 1) TX Indicator Appears when a signal is being transmitted. 2) RSSI (Receivi

Blinks in VOX selection mode or appears when VOX is activated. 7) Key Lock Indicator Blinks in auto lock selection mode or when the key lock

1) Up Button a) Short Touch – In the Standby page, press this button briefly to move to the next higher main volume level. – In the Map page, pre

the required option for respective functions or to go enter the sub-menu. 3.3-3 Page Button(#7) 1) Short Touch In the Standby Page, Map Pag