White Papers | Publications


World Wide Publications From and About FlexRadio Systems Products


FlexRadio CEO, Gerald Youngblood, K5SDR published a series of articles on Digital Signal Processing and Software Defined Radios in QEX and CQ VHF magazines in 2002 which unquestionably started the software defined radio revolution for amateur radio.  The quintessential  four part QEX article series  described the  key elements that went into concept and design of the SDR-1000™ transceiver.  The reprints are provided  below by permission of the publishers.

There are also many other domestic and international product reviews of the FLEX-5000™, FLEX-3000™ and SDR-1000 from various Amateur Radio publications.  Come by and visit this page often since there are always new reviews being published.

Page Last Updated:  Friday, October 02, 2009

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FLEX-5000 Software Defined Radio Articles



FLEX-5000:
La Radio del Futuro ya Está Aquí

(Español)

This article reviews the FLEX-5000 in the February 2008 issue of the Spanish publication of CQ Magazine

Luis Del Molino, EA3OG
© CQ Magazine. (Spain)
Used with permission.

 

A Software Defined Transceiver for Amateur Radio: FLEX-5000A
(Deutsch)

This article review is a technical review of the FLEX-5000A in the March 2008 issue of Funk Amateur

Klaus Lohmann, DK7XL
© Funk Amateur
Used with permission

 

Product Review of the FlexRadio Systems FLEX-5000A HF/50 MHz Transceiver

This article is a technical review of the FLEX-5000A in the July 2008 issue of QST Magazine


Rick Lindquist, WW3DE NCJ Managing Editor QST
© QST Magizine ( ARRL)
Used with permission



Zero Bias - 97.1(b)
A CQ Editorial



This CQ Editorial discusses the advancement of radio art in the area of software defined radios and specifically the FLEX-5000 in the October 2008 issue of CQ Magazine

Rich Moseson, W2VU
© CQ Magazine
Used with permission


 

FlexRadio Systems FLEX-5000A Software Defined Radio Transceiver

This article reviews the features and capabilities of the FLEX-5000A in the October 2008 issue of CQ Magazine.



Neal Campbell, K3NC
© CQ Magazine
Used with permission

 


 

FLEX-3000 Software Defined Radio Articles



FlexRadio FLEX-3000 HF and 50 MHz SDR Transceiver


This article review is a technical review of the FLEX-3000 in the August 2009 issue of RadCom

Peter Hart, G3SJX
©RadCom
Radio Society of Great Britain

Used with permission


 

FlexRadio Systems FLEX-3000 Software Defined HF/50 MHz Transceiver

This article is a technical review of the FLEX-3000 in the October 2009 issue of QST

Steve Sant Andrea, AG1YK
©QST
American Radio Relay League

Used with permission


 

Software Defined Radio - a look at the FLEX-3000



This article is an operators review of the FLEX-3000 in the April 2010 issue of Amateur Radio (Australia)

Brian Morgan, VK7RR
©WIR
Wireless Institute of Australia

Used with permission



 

SDR-1000 Software Defined Radio Articles


 

Read the Oct. 2005 QST review of the SDR-1000


Introduces Digital Signal Processing (DSP) as it is applied to Software Defined Radios (SDR). Also provides an overview of the SDR-1000 transceiver architecture.

.




Discusses the use of DirectX to implement a full duplex interface to a PC sound card using Microsoft Visual Basic.  Complete source code is provided.
 
 
Illustrates the use of DSP to turn the PC sound card interface from Part 2 into a functional    software-defined radio.  Also, it explores a powerful filtering technique called FFT fast-convolution filtering.
 

The series concludes with a description of a DC-65MHz transceiver (the SDR-1000) that will allow open software experimentation with software-defined radios.
 

April 2005 QST Review


Letter to QST Editor

Used with permission. 
April 2005 QST © ARRL



 

Digital Connection: Software Defined Radios

CQ Magazine
October 2003

Don Rotolo, N2IRZ,
the Digital Editor for © CQ Magazine.
Used with permission.

 

CQ VHF Magazine

Summer 2002


The article by Gerald Youngblood, W5SDR, provides an introduction to Software Defined Radios and typical SDR architectures. 
Used with permission


 

Homebrewer Magazine Summer 2003
By Martin Klaper, HB9ARK, and John Piri, WD6CSV

Reprinted with permission from HOMEBREWER Magazine

 




Old Man Magazine
November 2003

© Union of Swiss Short Wave Amateurs (USKA)
Old Man, 2003,
Used with permission


 

Software Defined Radio Model SDR-1000™
(Français)  (Deutsch)

Old Man Magazine
November 2003

© Union of Swiss Short Wave Amateurs (USKA)
Old Man, 2003,
Used with permission


 

(Deutsch)

CQ-DL Magazine
October 2003
By Martin Klaper, HB9ARK

© CQ-DL Magazine
Used with permission.

 
(Deutsch)


CQ-DL Magazine

July 2004


©
CQ-DL Magazine
Used with permissio.
 


  © Ondes Magazine
Used with permission
 

SDR-1000™: A Flexible QRP Transceiver
(Français)

Pages: 1  2  3
 
©
Ondes Magazine
Used with permission
 

Hubert F6GOG looks at
the SDR-1000™
(Français)

Pages: 1  2  3
 
©
Ondes Magazine
Used with permission
 




Reviews the SDR-1000™ from FlexRadio Systems
(Swedish)


Willi Reppel,SM6OMH


The Society of Experimenting Swedish Radio Amateurs - ESR)

ESR is a Society for spreading Knowledge of Radio Communications
Technology devoted to Amateur Radio.
 

(Français)

© RadioRef
Used with permission

     
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