BX-240 : FA-VA4 Vector Antenna Analyzer kit

Image of completed kit, switched onImage of completed kit, switched onSWR mesasurement on 5 ham frequenciesSWR mesasurement on 5 ham frequenciesSWR mesasurement with marker on 7.950 MHzSWR mesasurement with marker on 7.950 MHzLanguage selection menuLanguage selection menuSOL reference elementsSOL reference elements

Radio amateurs who build their own antennas, appreciate the value of a vector antenna analyzer. The apparatus presented here as a kit is characterised by high accuracy, small dimensions and easy handling. It allows one port measurements in the frequency range 100 kHz to 100 MHz with a system impedance of 50 Ohms (BNC).

This kit is an improved version of the IV-Meter from DG5MK, based on his article published in QEX May/June 2017.

Easy to build with all SMD parts preassembled. Comes with pre-machined enclosure, selectable menu language (german/english) and english assembly and operating manual. SOL reference elements are included.

Powered by 2 x AA alkaline batteries (not included in kit), average consumption of 50 mA without display backlight.

Size only 5⅜ x 3½ x 1 inch, weighs only 290 g (including batteries).

DISCONTINUED, shown for reference only

Superseded by FA-VA5.


Revised english language construction and user manual. Also now including SOL quick assembly guide.

Supplemental english language quick assembly guide for SOL reference elements.


Kit overview and buildup process.

Calibration with the SOL method.

Product reviews

If you are not from the United States, Canada, Japan, Australia or New Zealand you can order this item via our main online store at https://www.box73.de instead.