CQ WW CW 2012

Last weekend I participated in the CQ WW CW for the first time as Single Operator. I have been working the last few months to prepare my station for this contest. Most time was spent on automatic switching of the correct antenna for the correct band. In previous contests I had some problems in blowing my lowpass filters due to errors in selecting the correct antenna. No such issues this year.

Setup for this contest:

  • 2x Elecraft K3
  • 2x Drake L7
  • hexbeam for 10/15/20m with separate feedlines
  • 40: sloper
  • 80/160m vertical.

just before the start of the contest I (or better my neighbors) had some issues with the ground fault circuit. Making more than 200w made their ground fault interrupter to activate. I also had some RFI problems from 40m sloper.

During the Saturday evening I had to partly lower the hexbeam and to shorten the 80/160m vertical as a storm was announced with gusts of Force 10.

In the end I am pretty satisfied with the result!

        Band    QSOs    Pts  ZN    Cty
         1.8     171     192   10   46
         3.5     441     596   18   70
           7     321     574   17   70
          14     504    1019   32   98
          21     427     999   35  114
          28     276     697   25   75
       Total    2140    4077  137  473

            Score : 2,486,970

links: sh5

1×6 switch

Last year I built a 1×6 antenna switch. The switch was designed for my SO2R station. The goal was to built a 2×6 switch (see Top Ten Devices app note) with a high isolation between the different ports.

Previous designs for a 2×6 switch failed due to bad isolation values (less than 50dB). These designs were build with loads of relays, but without a PCB. After some experiments with a A/B switch (with isolation values of around 100dB) the 1×6 switch was designed.

PD9X has some nice images of the switch.

schematic

PCB

BOM

Antenna Splitter

This weekend I built 2 antenne splitters. With the splitter connected to the RX OUT of the K3 I am able to route the antenna signal to both the K3 and the QS1R. The splitter plugs directly into the K3 and only 1 cable is needed to the QS1R.

Design based on W8JI and F6AOJ.

 

 

Skimmer PC

Recently I purchased a QS1R receiver (http://www.srl-llc.com/). I want to run this receiver on a separate computer. Below the suggested specs. The computer will be installed in a 19” box which will not only containt the computer but also the QS1R receiver and the input circuits needed.

MoboCaseCPUPSUSSDMemoryGPU 

IOTA 2012

This year we participated for the 4th time in the IOTA contest (Texel Island, EU-038) in the Low Power DXpedition catagory. We rented a holiday house at the Grietjeshoeve where we installed our antennas and equipment. Conditions were worse than last year but out overall score was improved by better multiplier ‘hunting’.

Callsign: PE3V/p
Equipment:

  • 2x K3/100
  • Spiderbeam @8m
  • dipoles for 40m (@6m) and 80m (@7m)
  • end fed vertical dipoles for 10m/15m/20m
Crew: PA3FAL, PE1PKR, PE3V
        Results:

        Band  Mode  QSOs    Pts   IOT
         3,5  CW      97    1055   42
         3,5  LSB     88     870   28
           7  CW     258    2140   59
           7  LSB     51     575   28
          14  CW     421    2755   60
          14  USB    185    1485   44
          21  CW     149    1085   31
          21  USB     68     570   21
          28  CW      24     220   10
          28  USB      8     120    8
       Total  Both  1349   10875  331 

            Score : 3.599.625

links: log, sh5

 

CQ WW WPX 2012


 Band    QSOs    Pts  WPX
         1.8      23      46    5
         3.5     119     248   21
           7     216     519   84
          14     723    1319  348
          21     616    1340  323
          28      90     148   42
       Total    1787    3620  823


            Score : 2,979,260

links: log, sh5

TXBPF

This spring I build 2 TXBPF (http://www.5b4agn.net/) filter sets (based on the W3NQN filter designs part 1 and part 2) which were installed in an 19” cabinet.

PACC 2012

From our contest location in Oldeboarn we participated in the PACC contest in the M/M class.

Equipment:

  • 2x K3/100
  • 756 Pro II
  • 2x FT920

Antennas:

  • 10m: 3 elem beam @18m, Antron A-99
  • 15m: 3 elem beam @18m, squalo @10m
  • 20m: 3 elem beam @20m, squalo @10m
  • 40m: end fed vertical dipole, dipole @8m, 
  • 80m: vertical, dipole @10m
  • 160m: vertical (34m), dipole @20m
  • rx: 6x staggered beverage pairs (150m) for 40m/80m/160m

Crew:

Results:

Band  Mode  QSOs     Pts  Cty
1.8   CW     213     213   23
1.8   LSB     75      75   11
3.5   CW     376     376   32
3.5   LSB    375     375   20
7     CW     680     680   61
7     LSB    167     167   17
14    CW     428     428   58
14    USB    364     364   24
21    CW     288     288   40
21    USB     59      59   15
28    CW      88      88   19
28    USB     39      39    9
Total Both  3152    3152  329

Score : 1,037,008

links: log, sh5

CQ WW 160m CW 2012

This year we participated in the CQ WW 160m CW contest under the call PA3FKN.

equipment:

  • 2x K3/100
  • 2x AMP
  • 2x 30m vertical
  • 1x dipole @ 20m
  • 6 staggered beverage pairs of 150m

Operator(s):
PA1ENG, PA3DAT, PA3FAL, PA3FD, PA3FKN, PB2JJ, PC1A. PC5C, PE1PKR, PE1PIX

results:

QSOs  StP  DXCC   Score
1051   53    19 401,760

links: log, sh5

no images were found

Beverage switch

For the CQ WW 160m CW contest and the Dutch PACC contest I developed and build (together with PA3FAL) a switchbox which is used to route all beverages to the RX input of the low band stations (40/80/160).

The system is designed to handle 8 receive antennes and route the signals to max 6 radios (2 radios per band). Every station has a remote control box to select one of the RX antennes. Softrock receivers can be stacked onto the mainboard of the PCB which are connected to a Delta 1010LT ADC.