RFcalc 2.3 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The following versions: 2.3 and 2.0 are the most frequently downloaded ones by the program users.
The latest version of RFcalc is supported on PCs running Windows XP/Vista/7/8/10/11, 32-bit. The most frequent installation filename for the program is: RFcalc.EXE. This free program was originally created by Milmega Ltd. We recommend checking the downloaded files with any free antivirus. The program lies within Office Tools, more precisely Calculators.
From the developer:
RF calc is a calculator with extra functions and computation capabilities useful to RF engineers. Users of windows calculator will find RFcalc is very similar in look and operation.
To enable the extra features of RFcalc the function keys have been categorized using a tabbed page control.
You may want to check out more software, such as ProCalc, Unit Conversions or DBF to CSV Conveter, which might be similar to RFcalc.