Galaxy 99v2 Service Manual

| 16-04-2021
[RAND-1-100] Comments



AM / FM / SSB 10 Meter Radio

Description Reviews (12) The new DX99V2 is the only Galaxy all mode mobile radio. It operates on AM/FM/LSB/USB. With dual MOSFET finals (instead of four or eight finals) the DX99V2 draws less than 10 amps and can be hooked up anywhere a standard radio is wired no special heavy gauge wiring is required. GALAXY 99V2 SSB 10 METER RADIO. SUPER TUNED AND ALIGNED. GALAXY HAS DONE A GREAT JOB BRINGING THIS CLASSIC BACK WITH THE UPGRADES. IT NEEDED AND KEEPING ALL THE TREASURES WE LEARNED TO LOVE ABOUT THE ORIGINAL. 10-Meter Radios are intended for use by amateur radio operators only. A license from the FCC is required.

RADIO MODIFICATIONS

Frequency Conversion For (EPT004410Z Band PCB)

  1. Description Reviews (12) The new DX99V2 is the only Galaxy all mode mobile radio. It operates on AM/FM/LSB/USB. With dual MOSFET finals (instead of four or eight finals) the DX99V2 draws less than 10 amps and can be hooked up anywhere a standard radio is wired no special heavy gauge wiring is required.
  2. NEW Galaxy 99V2 10 Meter Radio This radio will be shipping on 7-17-2013!! While the features are essentially the same as the classic DX99V, it has a few significant upgrades:. High performance main circuit board (same as the one used in the DX98VHP) provides increased frequency stability and accuracy for sideband, as well as increased sensitivity and selectivity on receive. Streamlined.

Export Frequency Conversion

Remove the bottom cover from the unit and locate the Band PCB EPT004410Z on the left side of the radio. Remove the screw holding the board and plug in the loose connector J3 on the component side as shown above.
2.Unsolder and remove the short jumper wire on the solder side of the Band PCB, and re-mount the board back in place. The radio will now work from 25.165MHz – 28.755MHz

Frequency Conversion For (EPT004410A “SMT” Band PCB)

Export Frequency Conversion

Remove the bottom cover from the unit and locate the frequency divider circuit board on the left side of the unit. Remove the screw holding the board and plug in the loose connector to J3 of the frequency divider circuit board.
2.
Unsolder and remove the solder bridge from pins 8V and H on the bottom of the pcb as shown in the diagram above, and re-mount the board back in place.

Channel Chart (After Modification)

Channel Chart Bands A- H

Manual
Ch. No.Band Sel
A
Band Sw
LO		Band Sel
B
Band Sw
LO		Band Sel
C
Band Sw
LO		Band Sel
D
Band Sw
LO		Band Sel
A
Band Sw
HI
CB		Band Sel
B
Band Sw
HI		Band Sel
C
Band Sw
HI		Band Sel
D
Band Sw
HI
125.16525.61526.06526.51526.96527.41527.86528.315
225.17525.62526.07526.52526.97527.42527.87528.325
325.18525.63526.08526.53526.98527.43527.88528.335
425.20525.65526.10526.55527.00527.45527.90528.355
525.21525.66526.11526.56527.01527.46527.91528.365
625.22525.67526.12526.57527.02527.47527.92528.375
725.23525.68526.13526.58527.03527.48527.93528.385
825.25525.70526.15526.60527.05527.50527.95528.405
925.26525.71526.16526.61527.06527.51527.96528.415
1025.27525.72526.17526.62527.07527.52527.97528.425
1125.28525.73526.18526.63527.08527.53527.98528.435
1225.30525.75526.20526.65527.10527.55528.00528.455
1325.31525.76526.21526.66527.11527.56528.01528.465
1425.32525.77526.22526.67527.12527.57528.02528.475
1525.33525.78526.23526.68527.13527.58528.03528.485
1625.35525.80526.25526.70527.15527.60528.05528.505
1725.36525.81526.26526.71527.16527.61528.06528.515
1825.37525.82526.27526.72527.17527.62528.07528.525
1925.38525.83526.28526.73527.18527.63528.08528.535
2025.40525.85526.30526.75527.20527.65528.10528.555
2125.41525.86526.31526.76527.21527.66528.11528.565
2225.42525.87526.32526.77527.22527.67528.12528.575
2325.45525.90526.35526.80527.25527.70528.15528.605
2425.43525.88526.33526.78527.23527.68528.13528.585
2525.44525.89526.34526.79527.24527.69528.14528.595
2625.46525.91526.36526.81527.26527.71528.16528.615
2725.47525.92526.37526.82527.27527.72528.17528.625
2825.48525.93526.38526.83527.28527.73528.18528.635
2925.49525.94526.39526.84527.29527.74528.19528.645
3025.50525.95526.40526.85527.30527.75528.20528.655
3125.51525.96526.41526.86527.31527.76528.21528.665
3225.52525.97526.42526.87527.32527.77528.22528.675
3325.53525.98526.43526.88527.33527.78528.23528.685
3425.54525.99526.44526.89527.34527.79528.24528.695
3525.55526.00526.45526.90527.35527.80528.25528.705
3625.56526.01526.46526.91527.36527.81528.26528.715
3725.57526.02526.47526.92527.37527.82528.27528.725
3825.58526.03526.48526.93527.38527.83528.28528.735
3925.59526.04526.49526.94527.39527.84528.29528.745
4025.60526.05526.50526.95527.40527.85528.30528.755

10 meter FM Mod (28.000 – 29.655MHz)

Galaxy 99v2 Service Manual Lg

10 meter FM Band Conversion (26.065 – 29.655MHz Mod)

Remove the covers from the radio and locate X2 (grid location E2 Main PCB). Replace X2 13.560MHz crystal to a 14.460MHz crystal.
2.
Do a complete Alignment of the radio.
Re-Assemble the unit and check All Bands and functions for Proper operation.

This will give you the following freqs. in order.


Band A = 26.065 – 26.505
Band B = 26.515 – 26.955
Band C = 26.965 – 27.405
Band D = 27.415 – 27.855
Band E = 27.865 – 28.305
Band F = 28.315 – 28.755
Band G = 28.765 – 29.205
Band H = 29.215 – 29.655

This will cover almost the complete 10 meter range 28.000 – 29.700 and still keep the 11 meter CB.

Clarifier Mod

To make the fine clarifier control track on transmit and receive

Solder bridge J106 pin 54 to 8 volts

Galaxy 99v2 Service Manual Troubleshooting

Disabling Talkback (“SMT” Echo PCB) ( EPTOSSB50C)

tip:Talkback can become distorted if these radios have been “peaked,” and there is no cure because the talkback just amplifies what goes to the RF section. Try adding a 470k ohm resistor from junction of C154/R207 to the junction of C187/R235 on the solder side of the board. This will also give you clean talkback on SSB and FM. Try different values of resistance to get the amount of volume you want. The less the resistance the louder the talkback will be.

Galaxy 99v2 Modifications

Disabling Talkback (EPTOSSB50B) (Used in Early DX99V’s)

Disabling Talkback

Tip:Talkback can become distorted if these radios have been “peaked,” and there is no cure because the talkback just amplifies what goes to the RF section. Try adding a 470k ohm resistor from junction of C154/R207 to the junction of C187/R235 on the solder side of the board. This will also give you clean talkback on SSB and FM. Try different values of resistance to get the amount of volume you want. The less the resistance the louder the talkback will be.

Roger Beep Tone Mod

The tone and time of the roger beep on the DX99V can be changed as follows: * The Roger Beep tone is controlled by R181 which is 220K ohms:
For a higher tone try 150K to 200K ohms.
For a lower tone try 270K to 2M ohms.
* The Roger Beep time is controlled by C134 which is 2.2uF@16V DC:
For longer time try 5uF or 10uF@16V DC.
For shorter time try 1uF@16V DC.

Galaxy Dx 99v2 Service Manual

Galaxy DX 99V Alignment page

Related Posts

  • Galaxy URANUS Service Manual & MODS

    CB Radio Galaxy Uranus service manual & Frequency Modification Sommerkamp TS-789DX -…