Albrecht AE 6890 Guide

Repair & Adjustment Hints

AE 6890 Jumper settings, Power and Channel options

Jumpers at detachable front section board

To open: take off front section, remove 4 screws

Jumper section A:

Selecting the initial factory default frequency. (1 = solder jumper or 0 Ohm resistor

added) Factory default is version 3 jumpers added for Germany dE

Version A0 A1 A2 Country DISPLAY,CHANNEL

1 1 0 0 UK U(FM40CH 4W)

2 0 1 0 Spain (Italy) E (F40 4W/AM40 4W)

3110GERMANY DE(FM80 4W/AM40

1W)

4 0 0 1 EU EU(FM40 4W/AM40

1W)

5 0 1 1 CEPT(FM) EC(FM40 4W)

6 1 1 1 POLAND(-5K) Po(FM40/AM40 4W)

Jumper section B:

Enable 240CH by adding 0 OHM or solder jumper.

Default setting: no jumper, 240 CH is not allowed

Jumper section C:

Default: Enable MULTI Standard selection by user: 0 Ohm or solder jumper added

Disable Multi Standard selection: delete 0 Ohms or delete solder jumper.

Operation in 240 CH mode:

• Keep buttons PRI and TON pressed during switch on

• Release Power knob

• Relase PRI and TON

• Select bands Ato Fby CH 9 knob

Reset to Multi Standard mode:

• Keep button CH 9 pressed during power on

Reset appears on display for a moment, then normal operation starts

Operation in standard mode (all EU countries)

• Keep MHz button pressed during Power on

• Release POWER button

• Release MHz button

• Select country between dE (D, CZ), EU (European AM + FM), EC (European

FM), E(Spain AM+FM), Po (Poland AM+FM) and U(UK FM channels)

• Press MHz to confirm

Power jumper options (for use in Russia only)

Open main radio cabinet. Install solder jumpers or 0 Ohms resistors.

Possible modifications (1) and (2) or (3)

(1) highest possible AM power max. 6-8 W eff

(2) highest possible FM power max. 8-10 W

(3) set AM power from 1 W to 4 Watts

Note: instead of jumper (3) the AM power in 1 Watt position can be

fine adjusted by potentiometer between about 700 mW and 4 Watt eff.

4 W Power adjustment in FM

User potentiometer RV 6 in the power stabilizing section (near Modulation

transformer for fine tuning to 4.0 Watts FM power.

Main board, with components values

Main board, circuit diagram

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