Just did a 2 day WSPR on the 80m Inverted V at the top of the hill vs the 80m Inverted V ( fan ) just behind the house. The week before the test I worked a bunch of FT8 with both antennas. The one at the top of the hill performed better towards the east and the one behind the house ( part way up the hill ) performed better to the west.
Here is the 2 day spots map!
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| Blue is House , Red is Hill and Green is both |
IMI is the antenna just behind the house and LDP is the antenna at the top of the hill. The hill made it to Africa and the house made it to Hawaii.
Two antennas and the top 10 spots by distance...
Simultaneous Spots
I ended up with 8977 simultaneous spots between 0 and 180 degrees and 4,562 spots simultaneous spots between 180 and 360 degrees. Note , the hill more or less runs North South and both antennas run parallel to the hill... all within 30 degrees of true N-S.
I averaged out the SNR comparisons between the hill and house from 8,997 simultaneous spots between 0 and 180 degrees and found on the average the hill antenna performed 0.67 db better then the house. Next I averaged out the SNR comparisons between the hill and house from 4,562 simultaneous spots between 180 and 360 degrees and found on the average the house performed 3.56 db better them the hill.
The shack to the antenna just behind the house is about 100' to the 4X1 switch with a combo of about 30' of RG214 then 20' of hardline then from the switch to the antenna is about 50' of RG59. The shack to the antenna on the hill is pretty much LDF4 all the way around 500'. On paper there is very little loss and 3 MHz on the LDF. Potentially there are losses on either or that I am not taking into account. I need to at some point actually measure the loss. None the less the Antenna on the hill was head in the Canary Islands and the Antenna behind the house was heard in Hawaii. What I found was more or less my experience after operating from both antennas running FT8 last week.
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