-
You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
Help with Galaxy dx99v.
- Thread starter morseguy
- Start date
Sometimes this kind of problem clears up with a simple receive alignment.
Another thing you might check is if someone put a 2sc2999e at TR-17. If so; then replace it with the stock part which is a 2sc1674. I had put a 2sc2999e in my 99V and it didn't work so well. Receive was distorted a bit - too. So it was replaced with the stock part and went back to normal. If there are Schottky diodes in there; then that is OK and is a real improvement.
There might also be something wrong in the AGC circuit itself. There is a quad op amp, some diodes, and a couple of transistors in that circuit that may need to be checked out there.
http://www.cbtricks.com/radios/galaxy/dx99v/graphics/99v_block.gif
http://www.cbtricks.com/radios/galaxy/dx99v/graphics/dx99v_sch_old.pdf
I would try working with the first two ideas - first . . .
Another thing you might check is if someone put a 2sc2999e at TR-17. If so; then replace it with the stock part which is a 2sc1674. I had put a 2sc2999e in my 99V and it didn't work so well. Receive was distorted a bit - too. So it was replaced with the stock part and went back to normal. If there are Schottky diodes in there; then that is OK and is a real improvement.
There might also be something wrong in the AGC circuit itself. There is a quad op amp, some diodes, and a couple of transistors in that circuit that may need to be checked out there.
http://www.cbtricks.com/radios/galaxy/dx99v/graphics/99v_block.gif
http://www.cbtricks.com/radios/galaxy/dx99v/graphics/dx99v_sch_old.pdf
I would try working with the first two ideas - first . . .
Last edited:
Well he gave me the the dx99v today to take home. After playing around with it here are the symptons.
Low sensitivity.
Signals that I do hear are distorted and "crispy" sounding.
People tell me my transmitted signal is "watery" and weak sounding.
When transmitting the meter light dims.
Some kind of regulation problem? I know its not the power supply I'm using.
Low sensitivity.
Signals that I do hear are distorted and "crispy" sounding.
People tell me my transmitted signal is "watery" and weak sounding.
When transmitting the meter light dims.
Some kind of regulation problem? I know its not the power supply I'm using.
I forgot to update.
I poked around inside and touching one of the harnesses near the front of the radio, it came back to life. I then tried to get the radio to quit again and could not.
I reseated all the plug-in jumpers, cleaned all the switches and controls, then went thru the alignment.
My friend says the radio works just fine now. So we are both happy.
I poked around inside and touching one of the harnesses near the front of the radio, it came back to life. I then tried to get the radio to quit again and could not.
I reseated all the plug-in jumpers, cleaned all the switches and controls, then went thru the alignment.
My friend says the radio works just fine now. So we are both happy.
- No one is chatting at the moment.