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Attention !      Bureau QSL :  NO                DO NOT SEND   IRC 

Russian Districts Award (RDA) VG-11                                 These QSO held since October 2010, with the use of High Performance Software Defined Radio :

                                                                                                                                              https://www.hrdlog.net/Map2.aspx?user=UA4ATB

https://secure.clublog.org/logsearch/UA4ATB

 

Radio: HPSDR DDC/DUC Transceiver  ( http://openhpsdr.org/index.php  &   http://www.rv3apm.com/hpsdr.html )

100kHz - 55MHz frequency coverage                                                                  Control board: Hercules DJ Console MP3e2
LTC6400-20 20dB LNA (software switchable)                                                    CPU : Intel Core i3-550 3,2Ghz.
LTC2208 16-bit ADC sampling at 122.88Msps                                                   Software: windows 7  Pro 64 bit,
Front-end low-pass filter and ADC anti-aliasing filter                                             PowerSDR/OpenHPSDR_mRX_PS_v3.4.7
ADC overload (preamp on ) -12dBm (preamp off) +8dBm                                    Power        TRX = 100  watts
MDS (500Hz) all bands 160m - 6m = -138dBm (preamp on)                                Antennas       inverted-V dipole  80/40/20 m

                                                                                                                                                       Long Wire on 160 m

MDS (500Hz) 6m via Alex preamp = -146dBm
IP3 equivalent = +33dBm (preamp on) >50dBm (preamp off)
Blocking Dynamic Range 119dB.

Altera EP3C25 Cyclone 3 FPGA based DDC

Mercury is a Digital Down Conversion receiver that covers the frequency range 100kHz to 55MHz

METIS is a high speed PC interface board intended for use with the openHPSDR range of Software Defined Radio circuit boards.

Pennylane (DUCk) 1/2-watt transmitter/exciter board 

ALEXIARES (or ALEX for short) is a combination RF Preselector for use with Mercury
or any other SDR, as well as a transmitter low pass filter bank for a transmitter such as
Penelope, and optionally, with an associated RF power amplifier up to 100 watts peak.

Munin - Munin is a 100W HF power amplifier for Penelope and/or Hermes. This amplifier is dependent on the Alex LP filters.

The 100W PA uses a pair of RD100HHF1 in the output.

 

  

                             
A short video work HPSDR :                                                

   

    

   

   

   

   

    

     

    

     



Mercury RX Module :                                                                                   Metis  -   interface module : 

      

Alexiares (Alex) - RF Bandpass Filters RX  &  TX  :

Pennylane (DUCk) 1/2-watt transmitter/exciter board :                                        ALEXIARES (or ALEX for short) Enclosure :

                                                                



Manufacturer's Links :  http://www.tapr.org/hpsdr_index.html 

                                                   https://apache-labs.com/index.php

                                                   http://www.hpsdr.eu/


QSL  VIA         or      or   HRDLOG.net   

                    Amateur Radio Web based logbook

         

                               

 

central quay of Volgograd




Volga River


                                                                                                                

                                                                                                                                               Mamayev Kurgan Volgograd city

 

       Volgograd city

     Don river





                                                                                                                                                                 

                                                                                                                                                                                  Russian Winter


vy 73 de Viktor UA4ATB














































































 















































































 















































































 















































































 

















































































 

                                                                                                     

























































































 

























































































 

























































































 

























































































 

























































































 

























































































 

























































































 

























































































 

8529148 Last modified: 2017-12-22 19:37:57, 23198 bytes

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World Continents Award#3135
Granted: 2015-02-13 18:00:06   (UA4ATB)

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Grid Squared Award#2780
Granted: 2015-02-13 18:00:05   (UA4ATB)

Endorsements:
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  • 10 Meters Mixed
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    40 Meters Mixed
    80 Meters Mixed
  • 10 Meters Phone
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DX World Award#819
Granted: 2015-02-13 18:00:04   (UA4ATB)

Endorsements:
  • 15 Meters Mixed
  • 20 Meters Mixed
  • Mixed Phone
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