I wanted to thank those that have replied and helped me out with these questions. I realize they are a little off topic but I found this group through the repeater builder website so I thought it wouldn't hurt to ask.
Further, if you don't mind, I have developed a related question. I have further researched the repeater builder website and found the mod to reduce the trickle charge rate of the desk top charger. Since the desktop charger circuit and and circuit of the MVA are similar does anyone know where the equatable resistor would be in the MVA. A fellow member has given me the schematics but they are just different enough for me to encounter some serious head scratching. Can anyone offer assistance? Albert KI4ORI > Two questions for everyone. > > First off, I am trying to mod my MVA (Convertacom) to handle NiMH > batteries. I have looked at the repeater-builder website and found the > schematic. I opened up my MVA and there is no silk screening on the > board to identify the components. I began to attempt to trace the > circuit but that might take eons. > > So, does anyone have a picture or can tell me where R45 is located so > that I might change it to the appropriate value? Actually if I could > just identify which IC is labeled as U4 that would work too. I can > surely find pin 9 from there. > > Secondly, I have run into a programming problem. I have HT600's, > P200's and a newly acquired MT1000. Went to try and program the MT1000 > on my 286 and received "Serial Bus Access Error 003" on the screen > when trying to read the radio. I checked batteries, cables, and the > like and no change. I then tried to read one of my other radios that I > had programed before and received the same error. So then I tried my > 386 computer. Same error. I then tried a different RIB. Same error. > > Anyone have any ideas? >
