I would agree that the most likely candidate is the mic element.? I would look into another source to connect to the mic input.? Remember that the sleeve is connected to the PTT line, so you would need to make a breakout cable with the tip going to an audio source (PC or Phone) and the ring to a switch to ground the PTT line (you can also just short the connector with the lid off of the rig).? You will also need a 1 to 10 micro F cap to isolate the electret bias voltage on the mic input.? The rig side would be the positive lead if using an electrolytic.
For background, there have been a LOT of complaints on this board with supplied mic issues for the v6.? More so than the 2 years prior and all of the version 4 and 5.? The Baofeng mic looks really good but has had quality issues even with the ones supplied with their handhelds.? Honestly, a $20 CB mike with a preamp would be a better choice.? You can then adjust the volume for the best sound with full output.? I bought this one on Amazon:
? (looks like the price went up a few dollars).
If you do go that rout you will need to make an adapter to match the 4 pin connector to the 3.5 mm jack, or cut off the end and connect a 3.5 mm jack inplace of the 4 pin connector.? I went the adapter rout, as the cases for v4 and v5 have 4 pin plugs on them.
As is the case in most new uBITX ventures, there is a set process of solving the problems one by one.? There are many others on this board that can help if you run into something that I have not seen.
Good luck on finding your last major issue.
73
Evan
AC9TU
