[Hallicrafters] RTMA Dummy Antenna needed for alignment?

[Randy Perkins]

Hello to the group.
I am in the process of restoring my SX-99 receiver. In the alignment 
instructions they speak about using this RTMA Dummy Antenna in between 
the signal generator and the antenna input terminal.  In the 
Hallicrafters SX-99 book it shows the schematic for this Dummy Antenna 
and also in the Sams Photofact for the SX-99. The Hallicrafters book 
shows the inductor in this circuit to be 20 microfarad in the Sams 
photofact it shows it to be 20 millifarad. Does anyone know the correct 
value for this inductor?
Is this RTMA dummy load actually necessary? How critical are the 
component values? What is this RTMA Dummy Antenna for? Digging through 
the junk box, I have found the resistor and capacitors or pretty close. 
If the inductor is 20 microfarad would some small enameled wire about 1 
ohm resistance wound on a small form suffice? Any info on this is 
appreciated.
73, Randy, W5KCM