The Aero Thread..

Here you have more images at full resolution
Dropbox - Pictures.rar ( my private dropbox and no I don't have viruses on my laptop so I can assure you the link is clean.)
hope are helping a little.
The LNB is temporary mounted so don't ask why is looking that way.
I'm still looking for a way to mount it properly taking into account the LNB and antenna form (focus point) and I'm still waiting for my multifeed holder.
 
It's not a Prodelin (at least from the US factory).

There was an offshoot company in India making clones, perhaps it is one of those
 
EmilK said:
Here you have more images at full resolution
Dropbox - Pictures.rar ( my private dropbox and no I don't have viruses on my laptop so I can assure you the link is clean.)
hope are helping a little.
The LNB is temporary mounted so don't ask why is looking that way.
I'm still looking for a way to mount it properly taking into account the LNB and antenna form (focus point) and I'm still waiting for my multifeed holder.
Click to expand...

Are you sure it is a 1.8m ?
 
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Not necessary to measure antenna anymore..... winter you know :) There is all data you need to know about your antenna:

Working area = 1207x1264mm
Depth = 89.2mm
Opening angle = 64*
Offset angle = 17,3*
Distance from the top point of the working area to the focal point = 1348mm
Distance from the bottom point of the working area to the focal point (Focal distance) = 973mm
Aiming point of the LNB (from the Focal point to the bottom point of the working area) = 560mm

OK, I see you have ordered multifeed, so will not advice on that.


EmilK said:
I really dont know why I was thinking at 1.8 m .... :unsure
Click to expand...
How tall are you? :p
 
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Grrrr, Im small enough to make from a 1.2 m antenna a 1.8 m one hi hi hi
Thanks for the data that will help me a lot at tuning

Secondary, about multiffeder or anything else, if is wrong just tell me, on Amazon I have anyway 30 days money back option.
Im here to learn not to shine with what I had, have or will have.


P.S. Can someone split this threat, in my opinion is going OT.
 
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@EmilK Just start a new thread, name it as you wish.
Do you have a plan how to fix your new multifeed to the feedarm?
 
I tried a very offset feed on the 1.5m prime with some success on L band (25 degrees) but there is a lot more signal. Don't go to the trouble of making a proper fixing to start with. It's easy enough to use a tripod and clamp to play with a 2nd feed. I think that you will be lucky to get consistent Alphasat C band reception on a 1.2m, even with the feed at the focus but it is worth a go. I'd get yourself a C band LNBF (PLL for stability) and an offset feed. It seems that Titanium C1-PLL LNB sales are now only from the US. Aliexpress is cheap for feedhorns if you don't mind waiting e.g Free shipping 100% aluminum Conical scalar ring & 65mm C Band LNB holder-in Satellite TV Receiver from Consumer Electronics on Aliexpress.com | Alibaba Group

As has been said, the Prodelin probably has an f/d of 0.8. I have found that normal (0.6 f/d) feeds work OK (on Ku & Ka bands) but using the correct one gains a dB or 2. Attached is a list of the various Prodelin dish dimensions with their f/d. However, since you have it, just try it. If you take the SDR and laptop out to the dish you can tweak it in real time.
 

Attachments

Inmarsat migration https://www.inmarsat.com/support/i-3-to-i-4-services-migration/
Inmarsat C is migrating on 9th May
full details here: http://www.satcomglobal.com/_assets/media/editor/INM_C_I3_I4_migration_guide_V1.0.pdf
Summary:

The migration will take place in 4 steps, as listed below.

Step 1: Move of AORW from the 3F5 satellite (54 W) to the 4F3 satellite (98 W).
Step 2: Move of POR from the 3F3 satellite (78 E,) to the 4F1 satellite (143.5 E).
Step 3: Move of AORE from the 3F2 satellite15.5 W to the 3F5 satellite(54 W)
Step 4: Move of IOR from the 3F1 satellite (64 E) the AF1 satellite (25 E).
 
So I need a little bit of help
Got an L-band / Inmarsat Antenna with Integrated Amplifier and SAW Filter from Ebay and I have some data but only on the 600 and 1200 burst channels (Alphasat XL satellite).
If I try to mount it on the sat dish it gonna be from RHCP to LHCP so is there any other possibility to improve the signal?
Right now Jaero is reporting 16 dB signal level - if I understand correctly the info displayed, Ive go already some messaged about birds, fuel levels and so on but I have no positional data.
Secondary how can I configure VRS to receive the positional info that from time to time is displayed. I added a new receiver defined it as Sat feed but after some hours still shows 0 positions.

This is the antenna
L-band / Inmarsat Antenna with Integrated Amplifier and SAW Filter | eBay

Thanks for your help
Emil
 
Has something changed with Aero because as I understood it postioning data was only found on C-Band? It was definitely the case when I was messing around with it back at the beginning of this thread.
 
This is - probably - telemetry data

4 0x11 0x71 0x04 0x0E 0x90 0xDE 0x18 0x00 0x84 0x31 Log_on_confirm
5 0x40 0x71 0x04 0x0E 0x90 0xD4 0x51 0x61 0x38 0x45 P_R_channel_control_ISU GES = 90 Pd = 1546.013MHz at 10500bps
1 0x41 0x71 0x04 0x0E 0x90 0xD5 0x41 0x01 0x37 0x1D T_channel_control_ISU
3 0x11 0x75 0x02 0x55 0x90 0xDE 0xFC 0x0A 0x84 0x32 Log_on_confirm
4 0x40 0x75 0x02 0x55 0x90 0xD6 0x51 0x66 0x38 0x4B P_R_channel_control_ISU GES = 90 Pd = 1546.027MHz at 10500bps
0 0x41 0x75 0x02 0x55 0x90 0xD7 0x41 0x01 0x37 0x0B T_channel_control_ISU
2 0x11 0x34 0x50 0xD6 0x90 0xDE 0x18 0x00 0x84 0x33 Log_on_confirm
3 0x40 0x34 0x50 0xD6 0x90 0xD8 0x51 0x61 0x38 0x45 P_R_channel_control_ISU GES = 90 Pd = 1546.013MHz at 10500bps
5 0x41 0x34 0x50 0xD6 0x90 0xD9 0x41 0x01 0x36 0xCB T_channel_control_ISU
1 0x62 0xE4 0x8E 0x70 0x90 0x7C 0x8E 0x00 0x00 0x00 Acknowledge_RACK_TACK_P_channel
2 0x71 0xE4 0x8E 0x70 0x90 0x7B 0x03 0x10 0xFF 0xFF User_data_ISU_RLS_P_T_channel
0 0x11 0x0A 0x00 0x4B 0x90 0xDE 0xFC 0x06 0x83 0x34 Log_on_confirm
1 0x40 0x0A 0x00 0x4B 0x90 0xDA 0x51 0x10 0x36 0xE2 P_R_channel_control_ISU GES = 90 Pd = 1545.125MHz at 1200bps
3 0x41 0x0A 0x00 0x4B 0x90 0xDB 0x41 0x01 0x36 0xCE T_channel_control_ISU
5 0x11 0x4C 0xA6 0xE6 0x90 0xDF 0xFC 0x0A 0x84 0x35 Log_on_confirm
0 0x40 0x4C 0xA6 0xE6 0x90 0xDC 0x51 0x66 0x38 0x45 P_R_channel_control_ISU GES = 90 Pd = 1546.013MHz at 10500bps
2 0x41 0x4C 0xA6 0xE6 0x90 0xDD 0x41 0x01 0x37 0x1C T_channel_control_ISU
4 0x11 0x71 0x01 0x20 0x90 0xDE 0x14 0x0A 0x84 0x36 Log_on_confirm
5 0x40 0x71 0x01 0x20 0x90 0xDE 0x51 0x66 0x38 0x45 P_R_channel_control_ISU GES = 90 Pd = 1546.013MHz at 10500bps
1 0x41 0x71 0x01 0x20 0x90 0xDF 0x41 0x01 0x37 0x0B T_channel_control_ISU
3 0x11 0x71 0x04 0x0B 0x90 0xDE 0x18 0x00 0x84 0x37 Log_on_confirm
4 0x40 0x71 0x04 0x0B 0x90 0xD1 0x51 0x61 0x38 0x4B P_R_channel_control_ISU GES = 90 Pd = 1546.027MHz at 10500bps
0 0x41 0x71 0x04 0x0B 0x90 0xD2 0x41 0x01 0x36 0xD0 T_channel_control_ISU
2 0x19 0x07 0x25 0xBD 0x14 0xA9 0x71 0x91 0x87 0x8E Reserved_19
3 0x1A 0x39 0x00 0x02 0x0D 0x00 0x00 0x00 0x00 0x00
4 0x19 0x07 0x24 0xA9 0x44 0x09 0x37 0x6A 0x46 0xF1 Reserved_19
5 0x05 0x39 0x08 0x90 0x36 0xDE 0x36 0xC8 0x36 0xC8 AES_system_table_broadcast_GES_Psmc_and_Rsmc_channels_COMPLETE Seq = 2 GES = 90 --> Psmc = 1545.1150MHz (RX), Rsmc0 = 1646.5600MHz (TX), Rsmc1 = 1646.5600MHz (TX)
 
Update
Mounted an periodic antenna at the dish with the outernet amp (the test before was using just the outernet active antenna).
I have 9 to 10 db on the 10500 channels so those are full decoded but I have no idea where the channels containing the positional data are located so if someone can help me it would be great
Thanks
Emil
 
EmilK said:
Update
Mounted an periodic antenna at the dish with the outernet amp (the test before was using just the outernet active antenna).
I have 9 to 10 db on the 10500 channels so those are full decoded but I have no idea where the channels containing the positional data are located so if someone can help me it would be great
Thanks
Emil
Click to expand...

Which satellite are you pointing to for the signals ?
 
25E
using an adalm-pluto as receiver.
 
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