Galaxy DX99V from dual to single final possible?

[doffo]

Hello,

I am curious to see if one can just remove the 2nd final from the equation on the radio and just have it be a single final. If so, any guidance on what would need to be removed/jumped on the board so it works with the 1 final? Surely the bias would need to be set once again.

Any information on this is greatly appreciated. Thanks for reading.

 

[sp5it]

Just compare schematics 1 final vs 2 finals.
Personally I don't see any benefit from that modification.
Mike

 

[doffo]

Just compare schematics 1 final vs 2 finals.
Personally I don't see any benefit from that modification.
Mike

I tried to turn down the ALC to try and keep it around 10 watts on SSB, but at times during peaks it seems to just jump up and go passed that amount. Figured to keep it safe, just do away with the 2nd final.

 

[sp5it]

There is other way, but I need what board you have in your DX99V.
Old and new are single final based on schematics here: https://cbtricks.org/radios/galaxy/dx99v/

 

[doffo]

Of course, the one day I need the ladder, it isn't in the garage lol. The radio is up high on a shelf out of reach at the moment. I thought I had it inside here, but nope... I will have to borrow a ladder again..

If the board is the same as on this, this might have the answer. Dual Final Conversion

But based on that, removing R272, C209, and lifting the legs up from the 2nd final off the board should at least disable that section out?
I would just desolder a side and lift the part up so its up above. This way I dont lose the parts.

 

[sp5it]

Make power adjustment proper way.
Set ALC as before.
In place of red cross add 1kOhm pot. (Just lift one leg of the resistor and add pot.). Adjust output power to desired lvl. Done.
Mike

 

[doffo]

Make power adjustment proper way.
Set ALC as before.
In place of red cross add 1kOhm pot. (Just lift one leg of the resistor and add pot.). Adjust output power to desired lvl. Done.
Mike

Much appreciated. That would be the easier way out.

 

[9C1Driver]

You can control the output from the front of the radio. The RF power control is lower middle. You should be able to turn it down on ssb to almost nothing, or set it where ever you need it. Hate to see you butcher that radio up for no reason.

 

[doffo]

You can control the output from the front of the radio. The RF power control is lower middle. You should be able to turn it down on ssb to almost nothing, or set it where ever you need it. Hate to see you butcher that radio up for no reason.

The RF Power up front just adjusts the AM Power, but doesn't change the SSB side. The radio itself isn't in the best of shape when I got it, but its pretty neat being able to slide 5 KHz each side with it. Just would like to be able to run a KL203P or the Cobra 250 (Basically as Palomar) with it and not worry about driving it too much. I did try to turn down the ALC, but though most of the time its kept around 12 watts SSB, at peaks it reaches passed 20+ watts. Just would like to govern it and keep it around 10.

But no worries. I won't burn traces or clip the limiter. I can always revert it back to stock if I ever sell the radio again.

 

[Shadetree Mechanic]

On SSB you can adjust output power with the microphone level.

 

[doffo]

On SSB you can adjust output power with the microphone level.

I do lower the mic level, but then it becomes hard to hear me on the other radio though it reads lower watts out. Before anything, I will give it another go with lowering the mic level just to be sure.

 

[doffo]

Bah... All right.. Ill just leave it be lol... Least the information is there and it is achievable... Ill just dig out the black President Jackson radio again from the box and use it for a bit. Thanks for the replies.