[amsat-bb] re polarity control (woops!)

Angus angus at young5769.freeserve.co.uk
Wed Aug 20 09:32:04 PDT 2008

think I finally found out why there was not as great a difference on the LHCP compared to RHCP or so I thought and yes it was operator error (you guys already knew that I think hi).
Problem was I was using NOAA satellites as my signal source for a RHCP and when I switched to LHCP could still hear them well.
Truth of the matter is the signal here on RHCP is massive around 59+40db on a normal pass, when I switched to LHCP the signal was still BIG (59).
So the truth of the matter is, there is a huge difference to my RHCP and LHCP but I should not have used such a large signal as a reference source.
I realized what might be the error and checked it by sending my 14 year old son Cameron (2E0BAU) out on a 10 mile bicycle ride with a Yaseu VX2r handheld and a small yagi (similar to arrow). having got to a nice high spot, he pointed the yagi in my direction, he then spun the yagi slowly in a RHCP everything was fine (around 0.1watt output from VX2r) but when he spun the yagi in the wrong sense he was a very poor signal.
So now I have got that sorted, I am happy but sadly Cameron is not, very heavy downpour on his way back home on the bicycle, got very wet!
Still its all in the name of science!

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