$40 ANTENNA ANALYZER WITH ARDUINO AND AD9850

If you are a hacker, you might consider ham radio operators as innovative. Most people, however, just see them as cheap. So it is no surprise that hams like [jmharvey] will build an antenna analyzer from a DDS module and an Arduino instead of dropping a few hundred dollars on a commercial unit. As he points out, you probably only need an analyzer for a day or two while you set up an antenna. Unless you are a big time antenna builder, the unit will then sit idle on the shelf (or will wind up on loan to hams even cheaper than you are).

The design is rooted in another proven design, but changed to take advantage of parts he happened to have on hand. Although the build is on a universal circuit board, [jmharvey] used Eagle to lay out the circuit as though it were a PCB. Since placement can be important with an RF circuit, this isn’t a bad idea. It’s always easier to move stuff around on the screen than on the perf board…..

Read Full Article: Link

Recent Posts

AC6V’s GUIDE TO FM REPEATERS

January 11, 2015 No comments

  AC6V’s GUIDE TO FM REPEATERS This book is six months in the writing and features the advice of several noted Amateurs and technical gurus... Read more

ARISS Opens Window for ISS Ham Radio Contact Proposals on February 1

January 21, 2020 No comments

Amateur Radio on the International Space Station (ARISS) is once again seeking formal and informal education institutions and organizations — individu... Read more

Coronavirus Outbreak Postpones Swains Island W8S DXpedition

February 20, 2020 No comments

The W8S DXpedition to Swains Island in the Pacific, set to take place in mid-March, has been postponed until fall as a result of travel restrictions i... Read more

World Amateur Radio Day (WARD) 2021 is Sunday, April 18

March 31, 2021 No comments

World Amateur Radio Day (WARD) 2021 is Sunday, April 18. On that day in 1925, the International Amateur Radio Union (IARU) was formed in Paris. Today,... Read more

W1AW Operating Schedule

May 21, 2015 No comments

W1AW 6:45 pm 7:45 pm 8:45 pm 9:45 pm 0145z Voice Bulletin 7 pm 8 pm 9 pm 10 pm 0200z Fast Code Slow Code Fast Code Slow Code Fast Code 8 pm 9 pm 10 pm... Read more

Slow-Scan TV Transmissions from ISS Scheduled for December 6-8

November 29, 2017 No comments

ARISS has announced that the MAI-75 Slow-Scan (SSTV) system in the Russian Service Module of the International Space Station (ISS) will be on the air... Read more

Build Your Own Coils by AD5X

June 27, 2015 No comments

Build Your Own Coils Phil Salas – AD5X Introduction I really enjoy experimenting with different ways of making portable and mobile antennas. However,... Read more

Sneak Preview of the AH-705 HF/50 MHz Automatic Antenna Tuner

March 23, 2021 No comments

Icom AH-705 automatic antenna tuner for the IC-705 is now available from Icom UK dealers. The AH-705 is a small portable antenna tuner that has been d... Read more

PJ5A – Sint Eustatius Island

May 20, 2015 No comments

Terry K4RX, Chris W3CMP, Dick K5AND will be active from Sint Eustatius Island Date: 26 June – 5 July 2015 as PJ5A.1,8MHz  to 50MHZ QSL via M0URX... Read more

openSPOT is a standalone digital radio IP gateway / hotspot

August 29, 2016 No comments

Key features: Supports DMR (Brandmeister, DMRplus), D-Star (DCS, REF/DPlus), System Fusion (FCS) networks. More supported networks and features will b... Read more

Astronomers detect radio signals from far away galaxy

January 11, 2019 No comments

    CNN- A second mysterious repeating fast radio burst has been detected in space Read more