Rohde&Schwarz, the HFH
it`s a easy to handle portable ( around 90 pounds) full glowing field strenght meter, the large instruments is calibrated in dB/0,1µV.
HFH works from 100kHz up to 30MHz, it have a BFO also, and Atten.
The case for the antennas have 4 feets includet to use it as table for the instrument. It use a set of 3 Loops, and a external active vertical antenna (one tube in the socket)
A battery of 90Ah is good for a nice day in the garden