GitHub project page | Easy-SDR

An easy and quick building of active RA0SMS Mini-Whip receiving antenna based on SMD components. Based on the submitted files, you can order PCB manufacturing at the factory. The antenna consists of the antenna itself and power feed unit (PFU).

How does it work?

Example of working an SDR receiver on antenna Mini-Whip: Wide-band WebSDR in Enschede, the Netherlands

The detailed description of the principle of operation: Fundamentals of the MiniWhip antenna

Reminder

Note that the Mini-Whip broadband active receiving antenna may not provide sufficient reception quality. If you are interested in working at a narrow frequency band or at specific values, the best solution would be to use a narrow-band antenna (for example, a half-wave vibrator, provided that you have enough space to install it).

Basic characteristics of the antenna:

Not intended for use in the transmission path

Frequency range: 10 kHz - 30 MHz

Power: DC 5 - 13 V, 100 mA

RF connector: SMA

Feed line: 50 Ohm coaxial cable

Used PCB Material: FR-4

PCB thickness: 1.6 mm

PCB copper weight: 1 oz

An important point is the good grounding of the antenna.

What was used in the development?

RA0SMS Mini-Whip: The original circuit of the active receiving antenna was used. The PCBs for SMD components on platform EasyEDA was implemented.

Fundamentals of the MiniWhip antenna: Description of the principles of operation of the antenna. A qualitative article with a detailed step-by-step description.

Grounding of MiniWhip and other active whip antennas: Explanation of the need for a good grounding of the active receiving antenna.

Теоретические основы антенны MiniWhip: Translation of the two previous articles into Russian.

How to contact me?

- E-mail: igor.nikolaevich.96@gmail.com

- Telegram: https://t.me/igrikxd

- LinkedIn: https://www.linkedin.com/in/igor-yatsevich/