There`s no sign of DR 1 (21049 LHCP) in eastern part of Slovakia. Is this channel still on, or we`re just out of coverage? But 3.7m dish has been used... marval has reported reception in Zilina (not that far away) with smaller dish. Can anybody check it out, please?
Anyway, here is scan made on 27.7.2020 by Peon.
Live gives us lots of opportunities, but also challenges us and the brave ones are those, who take those challenges up.
TBS has recently introduced a new version of this popular card, so Peon decided to try the new card called "version 2" out.
For now he has a few pictures of version 1 vs 2 to avoid speculation, that a new fanless card may be a "fake".
So far he can say that it`s a rock solid device. Exactly as the older version of this card is.
Official statement from Tenow company I got my hands on to clear rumors about TBS 6903X card:
"We have updated TBS6903-X to Version 2. After lots of testing, we decided to remove the fan on the updated TBS6903-X tuner card and used a bigger heat sink."
So it means, 6903X has gone fan less, the heat sink was improved and all new stock is just like that.
So if you prefer a fan version, you have to ask a dealer if they have fan, or fan less version in stock. If it isn`t available anymore and you still prefer a fan a small DIY will sort out the problem.
Or what I`d do is to improve an air flow in the PC case.
One way or another you`ll still buy original and reliable TBS product.
Original von Kypros_Pambou
I want to ask if this card has fan or not ??
Some pictures show the card with black colour fan and some not .....
The TBS 6903X Peon received in 01/2019 and uses in his projects has the fan on as you can see on the picture
/edit by qwer: Sorry LINK disappeared with changing forum software on 01.08.2020.
Please ask sato again.
More pictures of the card
/edit by qwer: Sorry LINK disappeared with changing forum software on 01.08.2020.
Please ask sato again.
The situation at 25E on 22.03.2020 - Vertical & Horizontal scan on 3.7m dish by Peon.
There are still some frequencies with 8PSK modulation unlocked, but Peon hasn`t given up to get `em.
yep, you`re right about those cutting tools. There are made by Radeco and they are all sold as semi finished products, so it is necessary to grind them to required shape and size.
Catalogue can be seen on provided links from Czech shops, but take it as an example to show you what`s available and what price range they are sold for.
The polarizer from your link is mostly used in C band and it is very popular in Russia where rivets are used.
But a long, long time ago I found somewhere a profi polarizer that used the same technology (the 1 on the picture below).
I added the pdf file from the link you provided as sometimes those files exist for some time and then they vanish....
Thank you s-band and femi for sharing your know-how with us. This is exactly what I meant when I wrote earlier to Feedsat about sharing information....
Anyway, I`ve got some pictures to share, too, even I took them a long time ago when we got our X band LNBs. I contacted Paul J.Marsh from UHF-Satcom and also took screenshots from Michael Fletcher`s web site (kolumbus.fi ---> https://73.fi/oh2aue/ ) and discussed a few things about X band reception. Paul sent me a few pics I`d like to share with you as they might be useful 1 way or another. Or maybe you can come up with some other solution in reception chain (polarizer, feedhorn, waveguides etc.)
"However, a circular polariser to cover the whole band, 7.25-8.4GHz, is difficult to make."
s-band if you mention polarization problems above 7.75 GHz, it should be possible (somehow) to make it as Seavey offers a complete PF unit including polarizer to cover 7.1-8.4 Ghz range - model X band FEED-ESA-77C-2A.
"According to "110098-02 Polarizer.pdf" it has an inner diameter of 1.61 ", which is 40.89 mm which corresponds to a flange WR137."
Polarizer has each side different. I`ve got only one picture that shows its diameter of the end towards feedhorn. The second to the OMT can be seen on different shot, but without a measuring tape. This one is much smaller, that`s why Peon decided to use an adapter (it was mention to strannik`s reply), so it would be easy to go with or without a polarizer only with 1 feedhorn. Otherwise 2 would be needed: 1) bigger diameter for polarizer 2) smaller diameter for the OMT
you got me a bit wrong, but I`ll explain it to you.
Peter is planning to make a simple adapter to make fit both sides of the polarizer to the feedhorn he already made.
Each side of the polarizer is different size of the fitting ring, that`s why that adapter is a simple solution to solve the problem.
If there is no adapter used between them, 2 different feedhorns would be needed.
1) First that matches waveguide of the OMT.
2) Second that matches the size of the waveguide of the polarizer.
By Feedsat`s reports (many thanks for sharing that with us) we all know that everything in X band is in circular polarization, but in case there is some linear signal out there, this adapter will make it easy to switch from circular to linear by removing the polarizer. Then there will be feedhorn and OMT only.
I hope that the following picture will make it easier to understand.
Peon`s idea is very simple, but very effective and cost efficient.
Polarizer was designed to fit original offset feedhorn that is supplied by General Dynamics to customers. There is no Prime Focus feedhorn made by General Dynamics, only Seavey (model ESA-77C-2/A) .
That`s why Peon decided to go his own way and to have the best of both worlds.
There are not metric ones, you`re right about that.
Those screws use "Whitworth" type of thread mostly used in the US, but it is very common on LNBs. So there`s nothing unusual.
Anyway, I`ve got a question for you femi.
The middle part of your setup is a polarizer or an adapter?
In the Peon`s setups is used a pro grade polarizer by General Dynamics, model 110098-02 (price ca. 697,- USD).
If you, guys are interested in the OMT that is seen on my pics, it`s model 110091-1 also made by General Dynamics (price ca. 820,- USD).
What will follow in Peon`s setup?
In his case an additional adapter will be used to have an option to fit the PF feedhorn directly to the polarizer. Both parts use different dimensions.
Then, it will be very easy to have a linear or circular setup with only 1 feedhorn without loosing any signal.
As I wrote in my very first replies, we are open to every collaboration as everybody has some knowledge.
If we put those small pieces together, we can move forward and discover new possibilities.
This is what I call progress in our community of satellite enthusiasts.
I do not know your reasons Feedsat why you do not upload any pics of the rest of your X band setup (s-band, femi or I do that) so people can learn and try...
I`m not judging you my friend. It is and always will be up to you what to publish. But we learn from each other.... ;)
I`m looking forward to reading your reports about 32GHz DNS band when time allows you to do so.
As far as I know Hayabusa 2 is heading home and they are expecting its arrival in December 2020.
Anyway, the following link is a bit off topic, but it may help some of us to find out a few more positions when a beacon/telemetry peak is found on the spectrum. Or, some of us can improve the site by sending their own findings.
It is not that long ago, when a new Ka band section for the frequency range 31.8-32.3 GHz was updated on our web sites. Right, there hasn`t been any information uploaded yet, but time to do this will come sooner or later and people such as s-band, feedsat, Peon, maybe me or somebody else will write the history once again. I`m definitely sure about it.
I and Peon talk a lot and very often about new trends and technology in satellite business even it`s our hobby only. That`s not `cause we don`t wanna stay behind, but also we can learn a thing or two that will help us to improve the parts/reception we have now or we dream to reach at some point in the future.
Progress can not be stopped, so right now I would like to introduce you to the different chunk of satellite band. The new and unknown frequency range of Q-band (40.5 – 41.0 GHz), because with the arrival of 5G and preparation for 6G, the satellite industry will move from Ku and Ka band towards Q-band over the next decade.
Well, this band is not that new to satellite reception, but the first professional LNB was introduced only in May 2019 by Norsat, model Norsat Q1000H. First shipments of the new LNB was scheduled for end of Q3 2019.
People say, if there`s a problem there`s a solution, so when Norsat started producing pro grade Q band LNBs, there must be some satellites capable of transmitting in this band out there, too.
Yes guys, they are out there and they have been in the space for some time.
Eutelsat 65 West A @ 65W launched in 03/2016 or Alphasat (aka Inmarsat-4A F4) @ 25E launched in 07/2013 satellites are only a few of those to carry the Q/V band payload.
Here is a brief information about Norsat Q1000H:
Frequency Band - 40.5 - 41.0 (GHz)
L.O. Frequency: 39.55 (GHz)
L.O. Stability: ± 50 KHz
Noise Figure: 3 dB
Waveguide: WR22 (Ku - WR75, Ka - WR42, C - WR229, X - WR-112)
Current: 1000 mA max (WOW!!!)
Weight: 700 g
Work on X band is still in progress.
The new home made X band PF feedhorn that has been calculated and manufactured by Peon to details....
Today is the day when satellite DXing in Europe is entering another uncharted territory.
Peon was there when it was necessary to confirm first reception in 18 or 22 GHz band and it is a distinct honor for me to inform you that he is also the first EU explorer of the last Ka frequency band 17.2 - 18.2 GHz.
So from now on is Ka band (17.2 - 22.2 GHz) fully available to be explored....
Tests of Bowei BP-180 LNB designed for a frequency range 10 -10700 Mhz.
Do not pay any attention to S/N value as this is ATV transmission and as far as Peon was doing tests on Sunday morning, the value was jumping up and down.
This test was mainly to show that the LNB for this sub Ku band (10-10700 MHz) is out there, is available for a reliable price and it really works.
I`d like to bring to your attention an idea Peon and me got the other day when we were thinking what PC card to take out of the PCI-e slot as we needed to test TBS 6903X.
Well, Peon has 8PC cards at the moment and half of them are those connected to PCI-e.
The problem was to find the way to use all cards if there is limit on the mother board.
After thinking, talking and searching on the net to find a cheap solution, we finally got to this:
ANPIX Riser AG-EUX1-04
Riser board card
It is cheap and it works!
[SIZE=1]/edit by qwer: removed link.[/SIZE]
Original von satesco
Now is on 10494 H:the man and the location where these tests are made?
There was preperation a long time ago from the radio amateurs side for this satellite.
They were preparing staff for transmission of their TV channels and as you can see it is a really good stuff!
I may say that we (satellite enthusiast) can always see only our side of the moon, but this is how a dark side of the moon looks like.
By the way if you are interested in the 10-10.7 GHz LNB, here is the link:
Bowei BT-180 LNB
If Peon finds time during weekend, he`ll make some tests of this lnb in real life situation when receiving Es`hail 2 with a small offset dish.
No chance, no CS support. There`s no chance to find out the scanning range. No scanning program supports it, yet.
This card deserves support as it can show so much!
Start scanning frequency is from 10550.
OK, but there`s no CS support and because of that a false frequency appears.
BUT LOCKED after manually given all necessary parameters.
OK, but it doesn`t show all necessary parameters. Lack of support - no blind scan support yet.
Also, what do you think about the second frequency that appears on Peon`s scan?
The scan was performed on standard LNB not the one mentioned above.
Can anybody else see 10598 H?