"Jim-NN7K" . wrote in message
...
One other thing might check out, is the Salt Water Dummy Loads
(on several web sites). One mearly uses (can, Jar with lid),
and with metal plates attached to coax connector, filled
with salt water - Fill with water, then with ohm meter , add
Salt until the brine hits 50 ohms! Tho, don't know how high
frequency it is reliable to, should work to at least 50 MHz.
Jim NN7K

Generator tests (60 or 400 Hz, multi-KW) are routinely performed with a
trailer-mounted device called a load bank, where plates are immersed into a
tank of salt water. The depth of the plates determines the load resistance.