• A Software-Defined Radio for the Masses, Part 1 (795,927 bytes, PDF file) QEX Jul/Aug 2002, pp. 13-21 This series describes a complete PC-bases, software-defined radio that uses a sound card and an innovative detector circuit.

• A Software-Defined Radio for the Masses, Part 2 (623,355 bytes, PDF file) QEX Sep/Oct 2002, pp. 10-18

• A Software-Defined Radio for the Masses, Part 3 (967,358 bytes, PDF file) QEX, Nov/Dec 2002, pp. 27-36

• A Software-Defined Radio for the Masses, Part 4 (1,911,492 bytes, PDF file) QEX, Mar/Apr 2003, pp. 20-31

• Pericom PI5V331 spec sheet for the Tayloe detector.

What's neat about this 2-meter transceiver is that most of it is in software! Your PC is its front panel. With most of the radio in software, the mechanical construction of the radio is much easier to handle.

• The DSP-10: An All-Mode 2-Meter Transceiver Using a DSP IF and PC-Controlled Front Panel -- Part 1 (626,393 bytes, PDF file) QST September 1999, pp. 33-41

• The DSP-10: An All-Mode 2-Meter Transceiver Using a DSP IF and PC-Controlled Front Panel -- Part 2 QST October 1999, pp. 34-40

• The DSP-10: An All-Mode 2-Meter Transceiver Using a DSP IF and PC-Controlled Front Panel -- Part 3 (2,108,685 bytes, PDF file) QST November 1999, pp. 42-45

DSP-10 construction tips

Kit available from TAPR

• Signals, Samples and Stuff: A DSP Tutorial - Part 1 (1,013,741 bytes, PDF file) QEX, March 1998, pp. 3-16 DSP is a buzzword for the '90s. Have you wonder what it's all about?

• Signals, Samples and Stuff: A DSP Tutorial - Part 2 (1,370,214 bytes, PDF file) QEX, May 1998, pp. 22-37 Let's look inside an IF-DSP transceiver.

• Signals, Samples and Stuff: A DSP Tutorial - Part 3 (1,139,411 bytes, PDF file) QEX, July 1998, pp. 13-27 Advances DSP techniques.

• Signals, Samples and Stuff: A DSP Tutorial - Part 4 (994,755 bytes, PDF file) QEX, September 1998, pp. 19-29 Conclusion.

• SDRadio - a Software Defined Radio

• RFSPACE SDR-14 Software defined radio

• GnuRadio: UniversalSoftwareRadioPeripheral

• High level overview

• Good reading is Understanding digital Signal processing by Richard G. Lyons. Prentice Hall, 1st ed: 2nd ed:

• VanuBose 's company Vanu Technology demonstrated a software radio based on an iPAQ with a digital radio "backpack", in May 2003. Here are some links:

• http://slashdot.org/articles/03/05/12/203225.shtml?tid=137&tid=100

• http://www.linuxdevices.com/news/NS7890250038.html

• http://www.vanu.com/handheld.html

• http://www.vanu.com

• Note on the future of software defined radio:

• Several relevant pointers

From: w3sz <w3sz@comcast.net>
Reply-To: w3sz@comcast.net
To: Foster@schucker.org

Hello, Foster,

I found your website while doing a google search.

I like your SDR comments on the EarthMoonEarth2004 Wiki page, and have 
just one set of comments. That is, that I have over the past 5 years
used 
all 3 of the SDR-1000, DSP-10, and Linrad, for 144 MHz EME and
Microwave 
work, and have found that Linrad wins the competition for best system
for 
144 MHz EME system and microwave IF hands down when compared with the 
other two choices. I haven't tried Moe's SDR, though I've been
following 
its progress since well before it was for sale. The performance of
both 
the DSP-10 and the SDR-1000 even with the RF Enhancement board are far, 
far below that of Linrad with any decent front end, and especially
light 
years below Linrad when Linrad is used with the Antennspecialisten
front 
end units.

But in looking at your Wiki, 
http://www.schucker.org/Wiki.jsp?page=EarthMoonEarth2004 , which I 
understand is derived in part from Bob N4HY's talk at the EME meeting
this 
summer [great meeting I thought], although Linrad is mentioned none of 
Leif's many webpages is referenced. I came away thinking that a ham 
interested in SDR might end up with one of the two lesser units
[DSP-10, 
SDR-1000] in his shack because he wasn't steered in the right direction 
[Linrad] by the Wiki Page.

Good starting points for Leif's pages include:

http://www.antennspecialisten.com/~sm5bsz/linuxdsp/linrad.htm and
http://www.antennspecialisten.com/~sm5bsz/linuxdsp/linroot.htm

or


http://www.sm5bsz.com/linuxdsp/linroot.htm and
http://www.sm5bsz.com/linuxdsp/linrad.htm

The Antennspecialisten harware pages are referenced from:

http://www.antennspecialisten.se/en/

and one then goes to the 'Ham/LMR' pulldown menu to access information
on 
the individual WSE units.

I don't think any of the people touting the SDR-1000 or the DSP-10 for
EME 
use have actually used all three units to any extent for EME purposes.
I 
have and found that Linrad was up to the task. It is now my primary
EME 
receiver and I don't use a conventional receiver for 144 MHz EME
anymore 
[and haven't in several years]. Neither the DSP-10 nor the SDR-1000
was 
up to the task when compared to Linrad, nor were they comparable to my 
Elecraft K2/SSB Electronics Transverter combination when I used that
with 
the DSP-Blaster software by Brian Beezley K6STI.

Anyway, those are just my thoughts. Please excuse my intrusion if they 
are unwanted.

In any event,

Have a great week, thanks again for the very interesting webpages, and

73,

Roger Rehr
W3SZ

-- 
Roger Rehr
W3SZ
http://www.qsl.net/w3sz

• HpsdrWiki:Community Portal - HpsdrWiki

• Joint Tactical Radio System -- military SDR site

• Software Defined Radio Working Group report to the ARRL