The Jim Henry AMT5000 Project
One of the larger part 15 projects of the season is Jim Henry's construction of HBR (Honey Brook Radio) from an AMT5000 Transmitter 150-feet from his building.
Taking advantage of the AMT5000's Pro Input, a mono balanced +4 dB terminal block (J5), he installed an RDL STA-1 M Line Amp to boost from consumer level (-10 dB) unbalanced up to the balanced Pro level.
The RDL STA-1M describes 3 different ways of wiring the power supply: 1.) Grounded +24 VDC; 2.) Floating +24 VDC; 3.) Bi-Polar +12V/-12VDC.
While we understand both the Grounded and the Bi-Polar arrangements, we do not understand the specifics of a "floating" power supply. (?)