I left WSPR running for about 58 hours and closed the station when a thunderstorm was nearby.
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| RX including bogus spots |
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| TX with 1W |
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| Received uniques 24 hours on the 30th |
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| Received total distance on the 30th |
Not bad but average again. I ended just above PI4THT for the number of uniques. But total distance was not great. Does this mean my antenna just receive to much high angle signals? Or do I have interference from something. No, I think it is the low heigth (9m agl) of the antenna. I wonder if a magnetic loop would receive better? Tests with to 84m horizontal loop this winter showed a better receive performance of the loop. Although my vertical has been changed now. Some things interesting from these 58 hours; I only received one station from VK. However I have been received by many VK as well as ZL. No Japan and no South America spots at all both RX as TX.
4 comments:
Hallo Bas, interessante gegevens maar ik denk ook dat er zoveel factoren een rol spelen dat je hieruit eigenlijk nog geen conclusies kunt trekken. Niets is zo wisselend dan de HF banden en de propagaties. Ik zou toch wat vaker een meting doen. Wel verwacht ik dat de 80m loop het beter zal doen dan een magnetic loop. 73 Hans, PE1BVQ
Hallo Hans, echt conclusies kan je er niet uit trekken. Althans niet uit het TX gedeelte. RX is nog te vergelijken met de challenge site van PE1ITR en daar kom ik steeds in het midden uit. Ik kan wel een keer gaan testen samen met PA4GB, die zit hier ongeveer 2 km vandaan met een inv-V. Dan kun je de verschillen misschien zien. Ik zal het eens vragen binnekort of hij eens 24 uur WSPR wil doen op een bepaalde datum. 73, Bas
I wonder if you have used a terrain assessment program like the ARRL's HF Terrain Analysis software? You get this for free with the 'ARRL Antenna Book'.
On recent model runs, I found that in important directions such as to North America, a horizontal antenna produces 11dBi at 2 degrees to the horizon if placed - wait for it - just 3m about ground. It's a product of being on a hillside, with the sea beyond, and a fair amount of diffraction from the ground, too.
It's worth trying to get hold of HFTA and seeing if your terrain might allow similar 'surprising' configurations to help the signal along. Manual inputting of the terrain is a bit boring, though and a computerised map for the Netherlands will make the process a bit quicker.
I've been loking for the software on the internet but it seems it really is limited to the ARRL CD. It would be interesting to view and experiment with though. 73, Bas
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