Gerry W1VE has 2m and 70cm transverters from Ukraine, which should be a good fit for the µBITx:
These take from 1 – 50mW of drive, so he asks where to find the right tap off point before the final.
The boards cost just US$21. They put out about 8 watts in theory (less in practice) and they are sufficiently small to fit in the µbitx nicely. Imagine, a HF/V/U station for around $200. “Awesome” says Gerry.
Jose CO2JA says “Put an L attenuator on the driver output and turn off the finals. Use a saturated NPN switch driven from the +TX to key the transverter”.
Allison KB1GMX says “The ubitx sans driver and finals will put out roughly the right power for most modern transverters without the problem of too much power. The receiver is a good match as well.”
Joe KD2NFC drew our attention to this built-up board (semi-kit) for a 2m transverter and attenuator board available on eBay.