Hi Tom,
The SG Labs transverter also provides an analogue output for forward and reverse power.
I put together some parts from the junk box - meter / switch / pot and a lead with a suitable header, which plugs in to the transverter. You have to keep the cover off during use, so it wouldn’t be great as a permanent attachment, but I found it invaluable whilst tweaking the Yagi I made using the VK5DJ calculator.
Mine is 15 element using aluminium rod and a plastic pipe boom. The tolerances sound a bit daunting, but all you are doing is cutting aluminium rod, and then filing to length if necessary. Start with the longest element, then if you cut too deep, you can use the remains for the next element! Purchase a good steel ruler, if you don’t have one.
Anyway, let us know what you do, it’s all interesting stuff.
73
Adrian
G4AZS