BG0AUB Looks good! So you're now pointed at 25.5 East. Be careful your sheep do not touch the dish and ... wait for the amateur transponders to come alive : -)
Posts by PA3FYM
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DL3DCW Your solution is VERY elegant. I did not follow the thread concerning 'software locking' precisely but is it possible with one (e.g.) RTL-stick?
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DD4YR wrote: "I currently do not see much direct coupling of RX and TX when changing the frequency on the transponder ..."
I see! But I'm not allowed to talk about this here ; -)
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In addition to pe1chl I can say that when the NB-transponder was open on 16/17 January it was very convenient to precisely point the dish to the transponder(noise) looking at the waterfall. While tweaking I saw the 'overall' effect of the transponder noise MUCH better in the waterfall compared to tuning to a (single) carrier of a beacon (which always exhibits some QSB).
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Ok I do not know the situation in China but I still get the EB of ES'HailSat-2 on 11205 some weaker signal.
I know and see : -)
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BG0AUB When you receive 11199.8H beacon (as you presented in your pictures) you are accurate enough for Es'hail-2. 11199.8H beacon is from Es'hail-1 and is approximately in the same orbital slot.
IK0EQJ zhaofeng is in another part of the world, and I doubt the (MENA) beams of Es'hail-2 (engineering beacons) have coverage in China. So he very certainly sees other things (not) than we here in Europe. E.g. you have good copy of 11205H while are my lattitude since 10 Jan it almost disappeared.
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BG0AUB : the beacon 11199.8H looks like Es'hail-1 beacon. This satellite is at 25.5 E, so I think you pointed well enough!
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I think on the picture you see ArabSat 5A at 30.5° E ? (also two beacons on 10706)
I can't see the 10706 or 11205 beacon from Es'hail-2 anymore (well... faint traces) since Jan 10th.
Looks like you use a Starcom SR-3602 LNB (?)
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DD0KP Nice! (Didn't knew yesterday you were going to post these pictures ; -)
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In December last year (2018) G0MJW, M0EYT and me (PA3FYM) were involved in designing a LHCP-dual band 2.4-10 GHz feed. Inside this 'love triangle' Mike MJW appeared to be the CST modelling hero (per default ; -), Paul EYT the CNC hero and I (modestly) the circular polarisation (CP) feed point guide to let the patch really produce CP. Result seems to be a good performing LHCP patch (for standard offset dishes with f/D = 0.6). Placed in front of a dish it produces RHCP towards the 2.4 GHz RX antenna of Es'hail-2.
Only issue to be dealt with is the transition of the (circular) wave guide for the right aperture for a f/D = 0.6 dish. One solution is to buy a 'wrong' (cheap!) DRO 'rocket' LNB, remove the dielectric lens ('polyrod') and throw the remainders in the dust bin. Another approach is to make a dielectric lens. My/our first attempt is/are here: https://tinyurl.com/y75htz9c
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DB2OS : I deeply apologize, because of NDA (and you know all about that ...), I can't react and/or elaborate on the magic box. All I can say: "It has 'secret sauce' " ; -)
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Cannot answer, because of ... NDA concerning magic box ; -)
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I am an old fashioned guy with too much VSAT experience ; -)
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G8HAJ You're welcome!
However, to check if my memory was right I googled my eyes out. Nothing found. No IARU hits etc.
Then I phoned some (prominent!) EME-ers and asked them if they could confirm whether the EME-uplink is RHCP. No answer ... (?) However, one person remembered that in the W2IMU EME-newsletters (looong time ago) there was a short article concerning which polarisation to use. With this information I scanned the archives. The result is ... phew ... my memory was right.
Proof below:Edit: I also found the source: IARU R1 VHF Handbook:
