FlexRadio PowerSDR

SmartSDR & PowerSDR Flexradio software

The Software that Launched the SDR Revolution in Ham Radio

FlexRadio Systems PowerSDR™ software provides all DSP and hardware control functions for FlexRadio Systems’ FLEX-1500, FLEX-3000* and FLEX-5000* software defined radios.  While software experimentation is encouraged, no programming experience is ever required to enjoy your software defined radio.  The complete application is provided in compiled form so that you can simply download, install and run it.  Written in a combination of ANSI C and C#, FlexRadio PowerSDR software is easy to learn and modify.  Source code is available to encourage amateur SDR research and experimentation.  The capabilities of the FlexRadio PowerSDR software are limited only by your imagination.

*FLEX-5000 manufacturing discontinued May 2013.
*FLEX-3000 manufacturing discontinued October 2014.


SmartSDR & PowerSDR Flexradio software

Paul Leicester | MØFOX | Chesterfield UK | IO93HE | Yaesu FTDX1200

American Radio Relay League (ARRL)

ARRL logo type_17_6The American Radio Relay League (ARRL) is the largest membership association of amateur radio enthusiasts in the USA. ARRL is a non-profit organization, and was founded in 6th April 1914 by Hiram Percy Maxim of Hartford, Connecticut. The ARRL represents the interests of amateur radio operators before federal regulatory bodies, provides technical advice and assistance to amateur radio enthusiasts, supports a number of educational programs and sponsors emergency communications service throughout the country. The ARRL has approximately 154,000 members. In addition to members in the US, the organization claims over 7,000 members in other countries. The ARRL publishes many books and a monthly membership journal called QST. The ARRL held its Centennial Convention in Hartford, Connecticut in July 2014.

The ARRL is the primary representative organization of amateur radio operators to the US government. It performs this function by lobbying the US Congress and the Federal Communications Commission. The ARRL is also the international secretariat of the International Amateur Radio Union, which performs a similar role internationally, advocating for amateur radio interests before the International Telecommunications Union and the World Administrative Radio Conferences.

The organization is governed by a member-elected, volunteer Board of Directors. Each director serves a three-year term and represents the members within their particular region of the country. The national headquarters facilities are located in Newington, Connecticut. Along with the administrative headquarters, the 7-acre (2.8 ha) site is home to amateur radio station W1AW. The ARRL Field Organization carries out local and regional activities across the United States.

Paul Leicester | MØFOX | Chesterfield UK | IO93HE | Yaesu FTDX1200

MØFOX UK Ham Radio

Paul Leicester M0FOX

MØFOX Amateur Radio Website Paul Leicester

Amateur radio (also called ham radio) is the use of designated radio frequency spectra for purposes of private recreation, non-commercial exchange of messages, wireless experimentation, self-training, and emergency communication. The term “amateur” is used to specify persons interested in radio technique solely with a personal aim and without direct monetary or other similar reward, and to differentiate it from commercial broadcasting, public safety (such as police and fire), or professional two-way radio services (such as maritime, aviation, taxis, etc.).

The amateur radio service (amateur service and amateur satellite service) is established by the International Telecommunication Union (ITU) through the International Telecommunication Regulations. National governments regulate technical and operational characteristics of transmissions and issue individual stations licenses with an identifying call sign. Prospective amateur operators are tested for their understanding of key concepts in electronics and the host government’s radio regulations. Radio amateurs use a variety of voice, text, image, and data communications modes and have access to frequency allocations throughout the RF spectrum to enable communication across a city, region, country, continent, the world, or even into space.

Amateur radio is officially represented and coordinated by the International Amateur Radio Union (IARU), which is organized in three regions and has as its members the national amateur radio societies which exist in most countries. According to an estimate made in 2011 by the American Radio Relay League, two million people throughout the world are regularly involved with amateur radio.[1] About 830,000 amateur radio stations are located in IARU Region 2 (the Americas) followed by IARU Region 3 (South and East Asia and the Pacific Ocean) with about 750,000 stations. A significantly smaller number, about 400,000, are located in IARU Region 1 (Europe, Middle East, CIS, Africa).

MØFOX  DMR Digital Mobile Radio Forum



M0FOX UK Ham Radio
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Paul Leicester | MØFOX | Chesterfield UK | IO93HE | Yaesu FTDX1200