Some time ago I acquired the remote control unit of the above loop
antenna ...without the antenna itself.
I now would like to use the control unit for a homebrew magloop .

The magloop is to be connected to the control unit via coax which also
carries the power for the motor driving the magloop's variable capacitor .

To separate the RF and DC power (to the motor) an inductor is to be
inserted into each lead to the motor .
My question : How to size a suitable inductor for this application.
The photo of the original MFJ magloop shows 2 inductors without a core
The magloop to be made willl likely be used for 7 to 30 MHz
So , what inductive reactance would be required for the lowest freqency
, which would then also be OK for the higher freqs .

TIA for any advice


Frank , GM0CSZ in IO87AT

PS : If necessary /appropriate I do have a range of iron and ferrite
toroids to make any HF inductor for blocking RF to the motor.