Amateur Radio Weekly – Issue 280

Amateur Radio Weekly

Ria Jairam steps down from ARRL board, joins ARDC board [PDF]
“Ria is a powerful voice in amateur radio…”

HamTestOnline to shut down
Owner, John, W1AI, will shut down the site on June 30th unless a buyer can be found.

New digital mode: FreeData
A new digital mode that uses the OFDM modem code from FreeDV for having keyboard to keyboard chats.
marxys musing on technology

Code execution exploit via APRS
An exploit targeting WinAPRS and WIndows XP allows code execution on remote PC.

How times have changed for portable ops
In the 60s, you wouldn’t operate for long off a battery with the amperage needed to warm all those tubes.

Benefits of the Yaesu XF-130CN 300 Hz Crystal Roofing Filter
From the video you can hear that there is a very small demonstrable difference in strong signal rejection.
Ham Radio QRP

Delta loopy ideas
A delta loop has multiple possible feedpoints and the choice has to be made very carefully.
Ham Radio Outside the Box

World Amateur Radio Day is April 18
The day is being celebrated with a 2-week operating event occurring April 11 – 25.

Military reliance on HF on the rise?
HF, unlike landline connections and submarine cables, cannot be blocked.
The SWLing Post

LIFEPO4 batteries for portable operations
For the same capacity they are more than half the weight of SLA batteries.


1944 soldering iron training film
1944 US Office of Education black-and-white training film.

Homemade spy transmitter
Designing a small spy transmitter using two tubes.
Helge Fykse

PCB Yagi antenna for 2.4GHz
WA5VJB PCB based antenna tested.

Get Amateur Radio Weekly in your inbox.

Sign-up here

Amateur Radio Weekly is curated by Cale Mooth K4HCK. Sign up free to receive ham radio's most relevant news, projects, technology and events by e-mail each week at

2 Responses to “Amateur Radio Weekly – Issue 280”

Leave a Comment

Subscribe FREE to's
Amateur Radio Newsletter
News, Opinion, Giveaways & More!

Join over 7,000 subscribers!
We never share your e-mail address.

Also available via RSS feed, Twitter, and Facebook.

Subscribe FREE to's
Amateur Radio Newsletter

We never share your e-mail address.

Do you like to write?
Interesting project to share?
Helpful tips and ideas for other hams?

Submit an article and we will review it for publication on!

Have a ham radio product or service?
Consider advertising on our site.

Are you a reporter covering ham radio?
Find ham radio experts for your story.

How to Set Up a Ham Radio Blog
Get started in less than 15 minutes!

  • Matt W1MST, Managing Editor

Sign up for our free
Amateur Radio Newsletter

Enter your e-mail address: