Some weeks ago, I purchased a Hermes SDR. At home I am only qrv on 10GHz, but it could be nice to try to use it on 144MHz in a contest. Then yesterday, the first NAC contest on 144MHz took place, what a contest, the result is here.

Normally we work with an Icom IC-756 ProII and a DB6NT transverter.

Can a SDR transceiver be used in a NAC 2m contest, my answer is yes, but you need to do a few things (in my opinion).

1) If you don’t like to call cq all the time, you have to find some voice-keyer, the IC-756 has one build in.
2) If you don’t like to use a mouse, you have to find some USB Controlled Tuning Knob or something else

As voice keyer, we used one from K9DUR, if you don’t want to make extra cables you can just use it at the same PC as we use for PowerSDR. You then need a virtual audio cable (VAC) to pass audio from the voicekeyer to PowerSDR.
You also need a virtual null modem cable, to pass the PTT to PowerSDR. I used VAC and Com0Com.

As Tuning knob, we used a Hercules DJControl, and then we can move a lot more knobs/buttons out of the PC. DH1TW made some code for using a DJControl, and the guys from OpenHPSDR implemented it in the PowerSDR from OpenHPSDR.

Here how it looks in our first draft setup:

2014-12-26 10.03.20-1

 

And how did it perform ? I think we will use it in the next contest again, the sound from the SDR is better as the one from the Icom 756proII, maybe it’s because we used the equalizer, to fine tune the sound. No one complaint about our tx signal, so I guess that was also ok.

Here our setup inside the caravan, it’s a portable setup, and we need to make it a lot better, but we still manage to work 290 qso’s in 4 hours, conditions a little above normal.

If you want more info, just contact me. 

 

2015-01-06 21.10.57-1

Here OZ1LPR as operator.

2015-01-06 21.11.31

2015-01-06 21.11.04

 

oz1als 2m Nordic Activity Contest

Locator: JO44XX

Band QSOs Points AVG
144 MHz 290 158859 547.8

Band 144 MHz

QSOs:             290
QSO points:       119859
Points:           158859
Average pts/QSO:  547.79
Average qsop/QSO: 413.31
Points/50 QSOs:   20782


  WWLs: 78
-------------
JO31:  8284  19    JO20:  1811   3    JO62:  1035   3    JO97:   593   1    
JO30:  6957  13    JO41:  1799   5    JO86:   901   2    JO82:   574   1    
JO32:  5437  15    JO67:  1724   5    JO33:   890   4    JO75:   564   2    
JO22:  5310  12    JO68:  1690   4    JO46:   860   5    JN59:   564   1    
JO10:  5027   8    JO83:  1615   3    JN47:   854   1    JO93:   556   1    
JO42:  3564  12    JN68:  1601   2    JN67:   803   1    JO69:   523   1    
JO40:  3109   6    JO51:  1525   4    KO02:   796   1    JO71:   518   1    
JO59:  3100   6    JO21:  1492   3    IO86:   794   1    JO78:   488   1    
JN49:  2976   5    JN19:  1481   2    JO55:   785   7    JO60:   485   1    
JO65:  2971  16    JO01:  1461   2    JN58:   773   1    JO87:   466   1    
JO02:  2741   4    JP80:  1413   2    IO94:   759   1    JO28:   452   1    
JO43:  2668  14    IO92:  1403   2    JP71:   752   1    JO45:   379   5    
JO58:  2255   6    JN48:  1371   2    JN38:   749   1    JO76:   333   1    
JO99:  2153   3    JO77:  1237   3    JO48:   747   2    JO66:   243   1    
JO73:  2152   6    JO81:  1197   2    JO53:   703   5    JO47:   240   1    
JP70:  2135   3    JO11:  1180   2    JN79:   673   1    JO54:   212   2    
JO50:  2004   4    JO79:  1134   2    JO64:   672   3    JO56:   174   1    
JO70:  1927   3    JO88:  1127   2    JO89:   658   1    JO44:    26   1    
JO57:  1911   6    JO74:  1122   3    JN39:   657   1    
JO52:  1882   6    JO23:  1042   3    JN69:   620   1    

  DXCCs: 13
-------------
  DL: 44782 117       G:  6364   9       F:  4206   6      GM:   794   1    
  SM: 23105  52      ON:  4942   8      OK:  3220   5    
  PA: 13639  32      OZ:  4738  33      OE:  1601   2    
  SP:  7315  15      LA:  4299   9      HB:   854   1    

  Hours
---------
Hours                         Points                          QSOs   AVG pts/QSO
18-19: [********************] 40911  :  [********************]104  :  393  odx HB9FAP
19-20: [******************  ] 37727  :  [****************    ] 88  :  428  odx DL8NP
20-21: [*************       ] 26785  :  [************        ] 64  :  418  odx G4KUX
21-22: [*******             ] 14436  :  [******              ] 34  :  424  odx DL6MFK

  TOP 10 DX QSOs:
-------------------
HB9FAP        JN47PH  853 km by OZ1ALS SSB
DL6MFK        JN67JX  802 km by OZ1ALS SSB
OE5RBO        JN68OB  801 km by OZ1ALS SSB
OE5XBL        JN68PC  798 km by OZ1ALS SSB
SP5QAT        KO02LB  795 km by OZ1ALS SSB
GM4AFF        IO86TS  793 km by OZ1ALS SSB
DL8NP         JN58SC  772 km by OZ1ALS CWs SSBr
SK0EN         JO99JX  765 km by OZ1ALS SSB
G4KUX         IO94BP  758 km by OZ1ALS SSB
SM4DXO        JP71SB  751 km by OZ1ALS SSB

 

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