Viagra Board Version "B" Installation
Documentation Project
CBTricks.com

The following describes the installation procedure for adding the Viagra "B" channel modification PCB to the Galaxy DX949,DX959 and DX2547. Although this accessory can be added to any EPT06960Z Main PCB See note at bottom of page.

First you will need to insall the Viagra "B"
1. Viagra "B" with a Blue Dot 15.360MHz (sticker on the case).
2. Frequency Counter.
3. Voltmeter.
4. A few hand tools.
5. Soldering Iron.

Preparing the Radio for the Mod.

1. Fully check out the radio and be sure everything works before starting this mod!


2. Carefully remove the top and bottom radio covers. When removing the bottom cover, disconnect the speaker connector from the main board.

3. Using the provided screw, mount the Viagra "B" PCB through the open hole in the chassis, just behind the channel selector location. Use the hole which is closer to the
center of the chassis.

4. Follow the diagram below.

Radio Alignment

SETTINGS
CONNECTION
ADJUST
V-B
ADJUST
RADIO
ADJUST FOR
Remove TP7-TP9 Jumper PCB.
Set radio to channel 20
Set mode to AM RX Mode
Set clarifier to center
Set Viagra - B to MID band		 On Radio connect freq. counter to PLL IC3 pin 8
- -
VC1
 10.2400MHz
Same as above On V-B connect voltmeter to TP4
VC2
- -
 3.5VDC
Same as above On V-B connect freq. counter to TP5
VC1
- -
 15.360MHz
Set radio to AM TX Mode Same as above
- -

VR7

    

For same freq shown above.
Set radio to AM TX Mode On Radio, connect freq. counter to TP5
- -
L23
 10.69500MHz
Set radio to USB TX Mode On Radio, connect freq. counter to TP6
- -
L24

10.69250MHz
Set radio to LSB TX Mode Same as above
- -

L23

10.69750MHz
Replace TP7-TP9 Jumper PCB.
Note: There are other Viagra "B" boards for radios with the following VCO mixer frequencies.
Red Dot (sticker on the case) 15.810MHz
Green Dot (sticker on the case) 14.910MHz

 

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Disclaimer: Although the greatest care has been taken while compiling these documents,

we cannot guarantee that the instructions will work on every radio presented.