| Author |
Message |
    
Straycat
| | Posted on Sunday, June 08, 2003 - 10:26 am: | 
|
I just took my Galaxy 88 out of the closet. I haven't used it in 3 or 4 months and its exhibiting some strange behavior. On AM it seems OK but on SSB it doesn't swing as far as it used to. I used to get 35-40 watts with an Ahhhhh! Now I get about 18 and the key will hold at 5 watts for a couple of seconds before it goes all the way back. Sometimes just keying the mic on sideband gives me a 10 watt dead key. ?????? SSB bias ?? which VR ? Or is this a bigger problem ? Thanks |
307
| | Posted on Monday, June 09, 2003 - 9:06 am: |
|
Turn down the mic all the way and tell me , does it still key up a few watts on SSB? It sounds like it is oscillating from the mic circuit and thats what is causing the TX on SSB with no audio.
307 |
Straycat
| | Posted on Monday, June 09, 2003 - 7:05 pm: |
|
307 I think you were right. The radio would not do the SSb key while upside down. I sprayed the VR& SSB carrier balance and then worked it back and forth, set it so it showed no key on SSB and it looked like it was cured. I turned it over and it would key again right side up. I tapped the radio and the key fell. SSoooooo right then and there I suspected a bad solder joint or maybe a loose screw on the board mounting it to the radio. I found one screw that would turn a bit and tightened it. No more problem. Its possible the loose screw was making bad contact and creating the oscillation. Got it working again and now it performs like before. |
307
| | Posted on Tuesday, June 10, 2003 - 12:06 pm: |
|
Yup...I know , people argue with me when I tell them to tighten "all 4 screws" that connect the mother board to the chassis. This causes squealing in talk back , oscillations , and all sorts of stuff..
307 |
|
