CW - emergency communication ?

Why no love for CW?

Operating CW in Emergencies

Richard Carpenter, AA4OO, is a regular contributor to AmateurRadio.com and writes from North Carolina, USA. Contact him at [email protected].

Many small electronic devices have switching regulators in them that can generate a bunch of Radio Frequency Interference (RFI). This is not my first encounter with RFI-spewing devices. See this article about a automotive 12V-to-USB adapter giving me trouble: This Interference Seems To Follow Me Everywhere

I recently bought a couple of adapters that are physically larger than the one I wrote about. I was thinking that a larger size might allow for a little more filtering and a design that does not radiate. I was half right: one of them works pretty well, the other is an RFI Bad Boy.

Take a look at this short video where I check them out.

 

 

 

This is an Amazon link to the adapter that works pretty well.
Enercell® 2-Port USB CLA Car Charger

 

73, Bob K0NR

The post Radio Frequency Interference From 12V-to-USB Adapters appeared first on The KØNR Radio Site.

Bob Witte, KØNR, is a regular contributor to AmateurRadio.com and writes from Colorado, USA. Contact him at [email protected].

In this episode, Colin M6BOY is joined by Martin M1MRB, Edmund Spicer M0MNG and Bill Barnes N3JIX to discuss the latest Amateur / Ham Radio news. Colin M6BOY rounds up the news in brief, and this episode’s feature is The Art of De-soldering.

We would like to thank Kevin Murphy (W8VOS) and our monthly and annual subscription donors for keeping the podcast advert free. To donate, please visit - http://www.icqpodcast.com/donate

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Colin Butler, M6BOY, is the host of the ICQ Podcast, a weekly radio show about Amateur Radio. Contact him at [email protected].

AmateurLogic.TV Episode 112 is now available for download.

Tommy’s battery power solution for Arduino. Peter wants to make new Hams. George builds the ultimate color ‘Heads Up’ Display. And Mike joins us for some special holiday fun.

1:28:37

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George Thomas, W5JDX, is co-host of AmateurLogic.TV, an original amateur radio video program hosted by George Thomas (W5JDX), Tommy Martin (N5ZNO), Peter Berrett (VK3PB), and Emile Diodene (KE5QKR). Contact him at [email protected].

It's a fast and changing world and it appears I cannot write things quick enough at the game of Amateur Radio Blogging!


Tony G4WIF has just pointed me to the price of $109 for the uBitx and a new website!

I have just read what Asharr Farhan has said on the BITX20 group. The price will rise to $129 after Christmas, due to production costs, hiring more people etc. 


Of course I have just ordered mine!


Checkout here for details: http://www.hfsignals.com/index.php/ubitx/


Hope you all enjoy getting one just as much as I enjoy writing about these things.



73 Steve


Steve, G1KQH, is a regular contributor to AmateurRadio.com and writes from England. Contact him at [email protected].

A  new HF transceiver from India is about to take to market, offering multiband operation 10 through to 80metres, with the inclusion of the WARC bands and general coverage receive.

Asharr Farhan the designer of the BITX20 and BITX40 has been working on the uBitx project for quite sometime.  Demonstrations, and circuit details have been made available freely to anyone on his website Phonestack.com since early Spring 2017, for those who wished to scratch build the transceiver.

But Farhan, not resting on his recent success of producing the single band BITX40 (40m) transceiver, that introduced many to HF for a small price a point of "$59" including a recent addition of stable DDS, which he called the Raduino. VU2ESE has now put the uBitx into production, and I understand will be made available soon from his HF Signals website for purchase. (Currently the website only shows the current 40m radio for sale).



Above, a recent tested production run of uBitx transceiver boards.



The uBitx will offer CW and SSB, with 10W output from a pair of IRF510's.  Arduino derived stable DDS using a Si5351 for all the local oscillators.

What you will get in the package will be a fully built and tested board.  My guess is it will be sold with a similar hardware package that was included with the BITX40, which will include the wiring hardware, connectors, pots, power and BNC connectors for the antenna etc. All you will have to do is wire it up, add a speaker and a case to complete the project.


The price for the uBitx has yet to be announced? But again my guess is it will be one of it's major success stories that will take the HF world by storm and introduce many to the affordable world of HF operation. Of course, I expect it will cost more than the BITX40, but you will be getting access to most of the HF spectrum, for something until now that has proved undeliverable to those on small budgets. 

Exciting times, keep watching HF Signals for further details.





Steve, G1KQH, is a regular contributor to AmateurRadio.com and writes from England. Contact him at [email protected].

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