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October 20, 2019, 10:31:41 AM *
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Question: How big will this Satellite project be?
Very Big. - 19 (44.2%)
Big. - 7 (16.3%)
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Small. - 6 (14%)
Very Small. - 2 (4.7%)
No Clue. - 3 (7%)
Total Voters: 43

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Author Topic: Blockstream's Bitcoin Satelite WWW w/ OuterNet USB Reciever.  (Read 18178 times)
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December 20, 2018, 06:36:20 PM
 #41



I assume my links are still good on the top of this thread and you can still contact those guys for a kit. I also assume they probably have a solution to this...it may be 'in the can'

and ready to go for all I know. Check out the OuterNet threads and forums.

brad



 
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December 20, 2018, 06:41:25 PM
 #42

No, the link is dead

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December 20, 2018, 08:31:17 PM
Merited by ETFbitcoin (1)
 #43


Re-posted this at the end of the thread here...with some updated links.

============================================

This is a copy of the intro page. Enjoy.

Revised 12/20/2018 with new links below!

Satellite Service. Wow!

Comments, by those with better tech knowledge on this kinda thing, please.

Edit: I have one of the below USB Receivers. I think it was $100 bucks. Got it to play with months ago. Guess it is time to fire this hobby USB Satellite Reciever
Up!

Note 12/20/2018: My unit is still in the box, with the BTC crash in 2018, not had a lot of time with 'panic'ing' to delve into this. Hopefully, the links below
help with those in the weeds on these kinds of units.

----------------------------------------------------

whew! new links 12/20/2018

https://blockstream.com/2017/08/15/announcing-blockstream-satellite.html

https://othernet.is/

https://forums.othernet.is/

https://www.cryptoglobe.com/latest/2018/12/bitcoin-broken-free-from-isps-by-blockstream-satellite-connection-new-api/

--------------------------------------------------------------------------------

Thanks to Saint-loop on Bitcointalk here https://bitcointalk.org/index.php?action=profile;u=975910for the below additional links. Smiley

---------------------------------------------------------------------------------

https://hackernoon.com/building-your-own-bitcoin-satellite-node-6061d3c93e7

https://medium.com/@notgrubles/building-your-own-bitcoin-satellite-node-part-2-software-installation-a94a0b85d089

https://hackernoon.com/building-your-own-bitcoin-satellite-node-part-3-dish-alignment-1306b4c21326

-----------------------------------------------------

The original picture of the kit I got at the start of this thread below.



revised 12/20/2018.

 
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December 21, 2018, 01:28:28 AM
Merited by Searing (1)
 #44

This is very interesting project I have some skills with the Xband (10ghz) band and microwave links so this might be something I can actually throw some value towards.

I might give this a shot on the Telstar 11N Sat.

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December 24, 2018, 10:59:19 PM
 #45

Blockchain development firm Blockstream has expanded its satellite service and is now broadcasting the Bitcoin (BTC) blockchain to all of Earth’s major land masses, Forbes reported Dec. 17...

Source: https://cointelegraph.com/news/blockstream-launches-5th-satellite-streaming-bitcoin-blockchain-from-space

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January 25, 2019, 12:15:20 AM
Last edit: February 04, 2019, 09:23:15 AM by Saint-loup
 #46

Some guys are broadcasting messages on the Blockstream satellites


Obviously with https://blockstream.com/satellite-queue/

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January 27, 2019, 03:58:43 PM
Last edit: February 04, 2019, 09:24:15 AM by Saint-loup
 #47


In fact I found you can easily and freely send messages (and files under 10Kb) through Blockstream satellites with https://blockstream.com/satellite-queue/ (Broadcast a Transmission) by easily "paying" testnet BTC via testnet LN with this small testnet LN webwallet : https://htlc.me


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January 31, 2019, 07:31:19 PM
 #48

this Satelite thing is amazing!

Derivatives like Futures and Options are part of the formation of BTC prices since some time. Whether we like it or not the best way to adapt it is to learn how they are working and how we can profit from them.
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January 31, 2019, 09:19:03 PM
Merited by Gyrsur (1)
 #49

this Satelite thing is amazing!

I've not gotten around to getting mine up (bad OP) due to time..and I keep forgetting about this project with other projects not done. Sad

I think it cost me $99 bucks for the kit. FYI.

anyway, maybe someday, I'll get my butt in gear...

brad

 
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February 04, 2019, 02:13:38 AM
Last edit: February 04, 2019, 07:56:27 AM by gmaxwell
Merited by Carlton Banks (4), chimk (4), EFS (3), vapourminer (1), BitcoinFX (1), ETFbitcoin (1), bones261 (1), HeRetiK (1), Pmalek (1), mescalito (1)
 #50

I thought I'd share some pictures of my receiver setup.

I have two dishes, one to pickup the blockstream single on G18, and another to pickup the signal on Eu113-- most of the US are covered by both of these signals.

Once some upgrades are made to the sending side use of both dishes will allow half the delay when sending blocks (and, obviously, more reliability against obstructions or equipment failures)-- pretty handy in places that happen to be covered by multiple signals. At the moment I'm just using one at a time, though both work.

The dishes I'm using are 76cm Winegard DS2076.  I paid $45 each for them on Ebay.  If I hadn't found such a good deal on this I probably would have used 90cm geosat pros (which are about $100).  For my location the 76cm is adequate, though I've had some outages during bad weather-- heavy rain attenuates the 12GHz signal a LOT.

I understand blockstream is going to be making some signal changes that should improve reliablity, and also some modem changes that will make it easier to get pointing really peaked out.  The current tools give a really noisy SNR measurement which swings over a few dB in the space of seconds even when you aren't changing anything, this makes it really hard to dial in the pointing and get a really perfect alignment.   E.g. my polarization could be off by as much as 30deg and I wouldn't have any idea, because the changes just weren't visible on the background noise.

For feed horns and downconversion I'm using MK1 PLL LNBs on the dishes which were an astonishingly low price of $8 on amazon.  These are the appropriate devices for the americas signals, and they seem surprisingly good. Europe and Asia need different LNBs.

The dishes are connected back to my equipment room with a ~250 foot coax run using some fairly low loss cable that I reclaimed from a CATV temporary lateral that was abandoned on the under the grass after the put a permanent install up on the polls.  The reported SNR looks the same both with and without the cable, so I guess it's not too long.  YMMV esp with less heavy duty coax or with LNBs that have less gain or lower voltage power inserters: I kinda expected these to be too long.

Then I'm using Direct TV "swim" power inserters. These cost $7.   They are a little bulky but the only real complaint I have is that they're 120VAC only-- all my computer gear is 240v for efficiency reasons, so these being an odd ball out is a bit of a pain. But I am probably the only US user who is weird enough for this to be a problem. Smiley

Finally, I'm using the recommended $24 nesdr USB RTL dongles as the SDRs.  Not much to say about these things. They're inexpensive and they work.  I contemplated using a nicer SDR (I have a couple to choose from...) but I figure my bug reports are more useful if I use common hardware. Smiley  I use USB extension cables to hook the SDRs up to the host (otherwise the SDR is a fragile wart on the back of the computer).

These feed an older 3.4GHz quad core E3-1230 1u box that runs the fibre-enabled Bitcoind.

I've encountered a couple bugs which blockstream has been fixing as I've found 'em. In particular the pull-req to store out of order blocks is essential.  I've had a couple internet outages where the sat signals have successfully kept my Bitcoinds receiving blocks. Success!

The biggest issue that I had with the install is that multiple times I used a laptop for initial pointing that was too slow. And the blockstream modem software really doesn't give you a usable warning if the computer is too slow. When the computer is too slow. It _looks_ like its working, but that there is no signal.   My small laptop that was easy to haul up onto a ladder was just too slow, and even when I switched to a faster one it was too slow while not plugged into AC power (so it was fine on the ground but when unplugged to drag it up onto the ladder it started returning junk).  I wasted _hours_ due to this one problem.  Since pointing is a little tricky, esp if you haven't done it a bunch of times it isn't surprising if it takes you a bit, which just makes it take longer to realize that the lack of success is due to a slow system.

On with the pictures. First, a wider show to show how I have the dishes placed:




I decided to wall mount the dishes:  Compared to ground mounting them above where anyone would walk in front of them and block the signal or knock them out of alignment.  Compared to roof mounting they're somewhat protected from the wind, I didn't have to worry about causing any leaks, and they're less conspicuous.

Here is a close-up of the dishes:



Like most small dishes these are offset fed, so they point much higher than they look like (about 24 degrees, in the case of these dishes).

You can see the dishes are aimed 'cross eyed',  there is a power poll that gets a little close to the line of sight of the signal, so I wanted the dish that was pointed more towards the poll to be the dish that was further away from it.  I could have located the dishes elsewhere but this location has the advantage of being invisible inside the buildings unless you push your face right up to the glass.

And my equipment room with the power inserters and SDRs... and a bunch of unrelated stuff. (I have the wall opened up at the moment due to unrelated work) To the right is the top of the rack that has the computer in it that handles the signal.



In the pictures I also have a pair of 1268 MHz-center 35MHz wide bandpass filters between the power inserters and the SDR. They're not required, though I find they do improve SNR by about a half dB or so (the inexpensive SDRs don't have very selective front ends).  Mostly I have them just to avoid any issues with high power transmitters that I have getting picked up by the long coax run.

Beyond my issue with the slow computers making me falsely believe my aiming was wrong, the setup was really easy. (Though, I do have a non-trivial amount of experience with radio, SDRs, and Bitcoin (obviously)).
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February 04, 2019, 03:56:07 AM
Last edit: February 04, 2019, 08:54:12 AM by gmaxwell
 #51


Well now that btc/crypto and home/data hall mining for the little guy is dead...maybe...I'll have some time to get this up as well...very, very nice setup..will copy some of it Smiley

cool post

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February 04, 2019, 05:06:25 AM
 #52

Fantastic post and quite didactic. The photos are clear and it is easy to understand how to build this project. You have put some costs, but do you have any estimates of how much it cost for everything?

And is there any estimate of how many people have built and are keeping this project active in their homes or businesses?
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February 04, 2019, 05:18:29 AM
 #53

Here is a cost breakdown from a similar setup-

Here is the parts list - https://www.amazon.com/ideas/amzn1.account.AHH4EF7QUWTH4SHESSIXHM6H2IHQ/32NTXVS0Y48VI

without the stand it is only 105 usd , and lower if you have coax or an old dish


and here is a second parts list and buildup https://hackernoon.com/building-your-own-bitcoin-satellite-node-6061d3c93e7

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February 04, 2019, 08:30:43 AM
 #54

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February 04, 2019, 08:42:24 AM
Merited by vit05 (2), ETFbitcoin (1)
 #55

You have put some costs, but do you have any estimates of how much it cost for everything?

For each of my two dishes:

76cm dish $45
MK1 PLL LNB  $8 (note! EU and Asia need different LNBs!)
Coax from dish to inside-- depends on length, mine was free because I scavenged it-- you can get 50ft of RG6 for $15.
SWIM power injector $7
F to SMA connector $2
TCXO R820T2 SDR $24
USB extender cable $4
Figure a couple dollars in misc hardware, bolts, etc.

Then a suitable computer, you can get something used for $0 to $200 or so, or something new for less than $400.

Many of the parts can be found for free or nearly free depending on your scrounging abilities, proximity to hamfests, and willingness to trade time for money.  (e.g. it's very easy to find 45cm dishes for free at least in the US. Coax and injectors can also be found for free or close to it.  The LNB you'll have to buy-- as blockstream's signal requires an unusually stable LNB, but it won't break the bank.).

If you really have no similar hardware and no experience with this sort of thing you might want to double your estimated price, simply because you'll lose parts, find things that don't fit, need tools, etc.  I used a short piece of RG6 coax while aiming the dishes in order to avoid complications from the long cable run while pointing... My dish is mounted to the wall with lag bolts, if you don't have an impact driver (or at least ratchet, socket, and a lot of patience) you'll probably want to get one. To install it up there on the wall I needed a ladder which I obviously already had, etc. My tool chest is as tall as I am, so there is a certain amount of cost that I didn't experience that you might.
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February 08, 2019, 04:36:07 AM
 #56

I've put up a rough draft of my initial setup at an old disused website that apparently I've been paying to keep the domain name for...for about a decade...

I made about every mistake you can make...so I have some embarrassing but helpful tips on what to do (and not to do): https://www.drgoss.org

Hardforks aren't that hard. It’s getting others to use them that's hard.
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May 21, 2019, 07:45:54 AM
 #57

seems upgraded with the recent announcement

https://blockstream.com/2019/05/11/gotenna-satellite-api-integration/
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May 21, 2019, 08:03:50 AM
Last edit: May 21, 2019, 08:50:08 AM by Gyrsur
 #58

+1 Merit

this is awesome! now Bitcoin is independent from WWW in case you will distribute your local mesh txs via an Internet connectivity at a later time.

https://gotennamesh.com

https://hackernoon.com/building-your-own-bitcoin-satellite-node-6061d3c93e7





Derivatives like Futures and Options are part of the formation of BTC prices since some time. Whether we like it or not the best way to adapt it is to learn how they are working and how we can profit from them.
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