Anders SM5NNO has drawn attention to a published fix for low levels of drive on SSB with BITx transceivers from Mr K P S Kang (VU2KR / VU2OWF) on this blog. While the mic gain fix relates to the BITx40, it translates readily to the uBITx.
André PA3EIV confirms that the above fix (by Mr. K P S Kang VU2KR works 🙂
He changed the value of R65 to 4K7 and the value of R63 to 10 Ohm using 1206 surface mount components (desoldered from scrap prints).
He now has, on normal voice volume, 10 watt’s out on 20m. RV1 is turned counter clockwise for about 75%. André uses a Baofeng microphone.