I see your point. I'm not sure but I look forward to better answers.
73, John Brier KG4AKV
On Dec 6, 2017 6:16 PM, "Greg D" ko6th.greg@gmail.com wrote:
Yes, but doesn't linear stay linear (but perhaps in a different direction)? And linear in any direction should be a match for circular, in either direction, with a constant 6db loss. At least that's the theory. In practice, theory and practice can be different...
The first picture was in the first half of the pass, and the second about equally spaced on the second half (nice, since the rotor had to do a 180 spin right in the middle). The second picture on that pass came through without any issues.
Greg KO6TH
John Brier wrote:
In the Extra class license manual I have it says signals can switch polarity when they come through the ionosphere.
On Dec 6, 2017 6:02 PM, "Greg D" ko6th.greg@gmail.com wrote:
S9 the entire pass just now on my Oscar-ish array, without the preamp. 2m antenna is a 2x8 element circular polarized beam, and about 60' of old RG-something-thick (either 8 or 214) to the rig. Full Az/El rotisserie. 2 great images (4/12 and 5/12), though I had to switch polarization about halfway through the first one. Odd, since I thought the ISS antennas were linear...
Greg KO6TH
Koos van den Hout wrote:
On 12/06/2017 10:27 PM, Mike Seguin wrote:
Got two good images from the ISS just now. VERY loud signals from
them....
The signals are loud here too. I just received a full image which started at 7 degrees above the horizon and ended at the horizon. It's clearly showing decoding errors, but at the best reception my FT-857D gave it an S5. See https://twitter.com/khoos/status/938525407426629632
And that's on a vertical on top of the house. I wonder what an Az/El rotor on a high spot can do!
Koos van den Hout PE4KH
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John Brier