Thursday, August 21, 2014

Developing a HF transceiver around an Arduino

From the YO9IRF blog: "As you probably know, the Arduino platform is a very useful toy for development of electronic gizmos, and after I saw the Myriad RF project I started thinking how a small portable HF transceiver could be developed around the versatility the Arduino provides. The idea is to keep in line with the Arduino philosophy and level of knowledge, so the end product should be fairly simple and affordable, but still offering alot of fun.

These are my targets:
- 8-band SSB transceiver (LSB: 80m/40m, USB: 20m/17m/15m/12m/11m/10m)
- weight: 500 grams
- output: 10W
- sensitivity: 0.5uV
- consumption: 400mA@13.8V standby / 2.5A@13.8V TX
- display: mode, frequency, step, supply voltage, S-meter, SWR
- encoder VFO with 2 selectable steps
- bandswitch button"

XiOne - The portable Software Defined Radio - SDR

This is the SDR I'd like to buy !!! LINK

 The first Software Defined Radio easy to use with smartphones and fully open to the maker community

A huge frequency range from 100 kHz up to 1.7 GHz opens up a wide field of operations. For example the reception of worldwide short wave transmissions or the detection of ship as well as aircraft positions by receiving AIS and ADS-B Broadcasts. 
There is no need to install special drivers because all interfaces are based on standard network protocols, so it is effortless to operate the device within all environments. 
Simply connect via Wifi or Ethernet to the XiOne-Network or even use the USB-Port, which acts as a network interface too. The built-in router function actually allows parallel access to attached networks like the internet.

The XiOne has its own power supply allowing more than 2 hours of mobile usage, easily extendable with an external USB battery pack. In combination with dedicated smartphone or tablet Apps the solution becomes mobile, allowing to go into areas with very low radio interferences.

Wednesday, August 20, 2014

Send messages and pics to Mars

The first opportunity for the people of Earth to send personal messages and pictures to Mars by radio transmission! 

Beam Me celebrates the 50th anniversary of the first mission to Mars—NASA’s Mariner 4 launched on 28 November 1964. All Beam Me messages will be sent together by radio—at the speed of light—as a global shout-out from Earth to Mars on 28 November 2014.
Send as many messages as you like. With each message sent, you’ll receive a beautiful, downloadable certificate authenticating your participation in this historic event. 
Join in—it’s fun, it’s inspiring, it’s futuristic, and all messages help fund space research, education, and exploration!

Wednesday, August 06, 2014

JT65 August eQSL gallery

Tuesday, July 29, 2014

My CQ Monitoring Station ID

The CQ Monitoring Station program is modeled after the renowned WPE program launched by Popular Electronics magazine more than 50 years ago. The program was run by Tom Kneitel, WPE2AB, who would go on to become founding editor of Popular Communications magazine in 1983. Pop'Comm launched its monitoring station program January 1, 2012, filling a void left by the passing of the WPE program and Popular Electronics magazine. When Pop'Comm was made a part of CQ magazine's CQ Plus online digital supplement, it was renamed the CQ Monitoring Station program.

CQ Monitoring Station ID signs are issued on a first-come basis, determined by the date and time on your application email or the postmark of the request you send via the U.S. Postal Service. You may choose a “vanity” station ID or simply say “No Preference,” and we’ll pick a station ID sign for you. Read Monitoring monthly in CQ Plus for the latest updates to the program!

How to Apply for a CQ Monitoring Station ID

Friday, July 25, 2014

DXHeat web cluster

DXHeat has no native app, it has been designed responsively, adjusting to every screen width. Beautiful icons are supplied for bookmarking / direct links on your iOS / Android App screen. Nice feature the filters to narrow the search. Unfortunately there is not (not yet?) a filter for IOTA spots, for hunters like me. No need to download software. Just point your browser to and enjoy the DXHeat cluster.

DX Cluster on iPhone

Find out which interesting DX HAM Radio Amateur operators are “on the air” on the amateur radio bands!  
Mircules DX Cluster is an iPhone / iPad app that shows the info found on the international DX Cluster. It is available in the appstore in 2 languages; English and Dutch. 
 This Cluster is widely used by radio amateurs and SWL enthusiasts to find the DX “treasures” on the bands.
All popular amateur bands are included
 - HF bands (10m, 12m, 15m, 17m, 20m, 30m, 40m, 80m, 160m)
- VHF bands (1.25m, 2m, 4m, 6m)
- UHF 70cm band.
Mircules DX Cluster shows the last 50 DX spots on the selected band in a clear list. The first spot item in the list is the most popular DX spot at that moment. This is the item that recurs in the list the biggest number of times.

Wednesday, July 09, 2014

JT65 July eQSL gallery

Thursday, July 03, 2014