Re: ATU for mBITX
look at the "Bias Tee" link at <http://qsl.net/n5ib/>
for a way to remote the Elecraft T1 and run power on the coax.
Each of the two Bias Tee units will fit the traditional Altoids tin.
The T1 tuner and its Bias Tee can be fitted into a weatherproof box at the antenna
At the Tx end an SWR meter is needed to monitor/verify the match.