HF SDR(Software Defined Radio) transceivers

All published designs and materials are free for personal and non commercial use. Other use for commercial purpose are not allowed without permission from the author.

Low power SDR HF I/Q S/H (Sample and Hold) transceiver CW,SSB.- ADTRX1 from 30 kHz-35 MHz with external LO-part1

     HF SDR transceiver called ADTRX1 (analog + digital) is compilation of the  results  and previously published designs. ADTRX1 is working to the 35 MHz and it is a very simple and promising  design all with classic size thru holes components. It is very good introduction in to the new SDR technique of the HF transceiver design. Most of demanding specification for HF transceivers are in software now, not in hardware like in classic HF transceiver design. Part 1 is giving description main ADTRX1 board, results and basic connections

HF SDR transceiver ADTRX1-YU1LM part1.pdf

 

ADTRX1 SDR Transceivers  built by Andrey US5EQQ

ADTRX1 SDR Transceivers  built by Wolfgang DK2CQ

ADRX1-V1 SDR transceiver built by Gena UA6XW/9 with his PCB version

 VIDEO about ATRX1-1 SDR transceiver built by Christopher HB9TJM

http://www.hb9tjm.net/hamlog/blog/

Low power SDR HF I/Q S/H (Sample and Hold) transceiver CW,SSB...- ADTRX1 from 30 kHz-35 MHz with external LO-control booards B1 and B2- part2    

     ADTRX1 SDR transceiver part 2 . In this article I am describing different possibilities with new control hardware boards B1 and B2. I made PCB corrections for ADTRX1 and new ADTRX1-1 version with 2 AF gain position like it is done in the SDR receivers DR2 ,DR2A.. . The receiving path in ADTRX1 is going always through the SB card and for transmission I am describing  here 3 ways how to perform it. First way is completely digital with using SB card only , second way is completely analog with built in hardware and third way is mixture solution partly digital partly analog hardware. In the moment when  I started design and experimenting with control  boards  there ware not  freeware software for transmission. Now we have few software and situation is a quite different. The readers can decide individually how to do transmission.

HF SDR transceiver ADTRX1-YU1LM part2.pdf  

 ADTRX1-1 SDR transceiver built by Danil UR3VCD

ADTRX1-1 SDR transceiver + input/output BP filters built by Serg UA3PRQ

 

ADTRX1-1 SDR transceiv=er with control boards B1 and B2 built by Gabriel Scevlik from Slovakia

Low power SDR HF I/Q S/H (Sample and Hold) transceiver CW, SSB.. - ADTRX1 from 30 kHz-  35 MHz with built in LO and control  board B3 and B4 -part 3

    Low power SDR HF I/Q S/H (Sample and Hold) transceiver based on use 74HC4053- ADTRX1 from 30 kHz-35 MHz with new boards B3 and B4. These new boards will enable easy RX/TX control interface with PC. Operation is possible on 3 bands harmonically related. The boards have built in 4 channel crystal oscillator  with QRP 5Wout power amplifier with LP/BP.

`HF SDR transceiver ADTRX1-YU1LM part3.pdf

ADTRX1 SDR transceiver modified and built by Alex EU1ME

ADTRX1 SDR transceiver built by Eugene RU6AI

ADTRX1 SDR transceiver built by Daniel CT2JVM as graduate work in OFDM transceiver

ADTRX1 SDR transceiver built by Jean-Michel TR8JH

ADTRX1 SDR transceiver built by Pierre F1MGL

ADTRX1 SDR transceiver built by Alexey RA4UDC

ADTRX1 SDR transceiver + PA + LO Si570 LO built by Franck F1SSF

 HF SDR Transceiver - AVALA-01   from 1.5 MHz- 52 MHz

        Mono-band SDR transceiver AVALA-01 is ADTRX-02 low power SDR transceiver with built in QRP power amplifier and band oscillator all on one board. Transceiver is optimized for work with one (or two) sound card and M0KGK, Rocky ,PowerSDR SR40 and PowerSDR- IQ software. With unique PC control setup AVALA-01 can work with all types modulations SSB, CW, DIGITAL.

HF SDR Transceievrs AVALA-01 -YU1LM.pdf

HF SDR Transceievrs AVALA-01 Corrections-YU1LM.pdf

 

AVALA-01 SDR transceiver first  prototype built by author Tasa YU1LM/QRP and output spectrum at 7MHz Pout=36dBm(4W)

AVALA-01 REV-2A SDR transceiver for 7MHz in WWWPX-CW CONTEST 2008 2 WR / 2 EU 400 QSOs   Power SDR +N1MM software in practical operation) built by author Tasa YU1LM/QRP

AVALA-01 REV-2 SDR transceiver for 3.5MHz built by Sasa YU1EO

AVALA-01 REV-1 SDR transceiver built by George UB5LCM

AVALA-01 REV-2 SDR transceiver for 14MHz with mix 56 MHz LO built by Miki YU1KM

AVALA-01 3 band 4 channel SDR transceiver built by Duško YU1RK with his version PCBs

AVALA-01 SDR transceiver built by Dule YT1DL

AVALA-01 SDR transceivers + DDS AD9851 LO built by Pierre F1MGL

 

AVALA-01 SDR transceiver built by Zilvinas LY3X

DT2+DR2 as SDR transceiver built by Cezary SP5HTT

DT2A+DR2 as SDR transceiver built by Gerard F6BSZ

AVALA-01SDR transceiver with external PA stage built by Alexey RA4ADC

AVALA-02 SDR core with PA for ADTRX1 SDR transceiver built by Peter SM2HJJ

AVALA-01 SDR transceiver built by Zeljko 9A3RU and Zeljko 9A3ZV

AVALA-01 SDR transceiver built by F8BOJ

AVALA-01 SDR transceiver with power supply +28v !!!! redesigned, corrected errors and PA 18W built by Sandeep VU3SXT

AVALA-01 SDR transceiver built by IK1JNS

AVALA-01 SDR transceiver built by Dragan YU1AS

AVALA-01 SDR transceiver built by Bodo DJ9CS with seriously improvement see article about AVALA-01 errors

AVALA-01 SDR core built by Douglas CO8DM

ADTRX-8 unpublished 1W 2 band SDR transceiver dimensions 100x160mm built by Rado S57RD