Wouldn’t more antennas be a better solution? One for each sdr dongle? You might only need a smaller, low gain antenna for one of the sdr’s or more (depending on what they’re doing), and then tailor each antenna for each use case
@@TallPaulTech I thought of that and how it would look, yeah ppl might think what the hell is this guy up to, but if the street already knows you, it’s just a flex and better reception. 😅👍 I play piano also, so “noise/interference’ is an absolute no no, especially when listening to static rf...
I have a question about your com splitter SP-TX-4B, the specs says it works from 1500-8000 Mhz but does it work below this frequency range ? I would like too use it from 0-2000 Mhz.
Thanks Paul for the inspiration. Have been thinking about doing something similar but haven’t done so yet mainly because I’m not sure what to do against possible lighting strikes. Do you have any sort of protection against that?
There is no protection against a lightning strike! If lightning hits, you're fucked, pure and simple. Protection against ambient electrical charge in the air during storms maybe, but even so I haven't bothered with that either.
A discone antenna is a compromise antenna. You give up gain and selectivity in favor of a huge bandwidth. I would put up band specific antennas. Also your feed line could be loads better. I would suggest LM-400 or hardline. You then could add antenna mounted preamps (receive antennas) and reduce your systen noise figure significantly. I need to check out your server infi as I would like to do something similar with all my sdr's. Great channel, great content. Thanks.
If you are feeling adventurous, you may want to try a “channeliser” rather than the splitter and filter combination. The problem with the latter is that the splitters and filters have loss which degrades the Noise Figure of the system, making the receivers less sensitive. If you know the bands of operation, a channeliser is a better choice as it performs the splitting function naturally, but with lower loss. You could also perhaps use a commercial FM/DVB-T/DVB-S triplexer, but that may constrain your receive frequency range too much.
The one thing I can tell you, is that 2MHz of RF bandwidth from an RTL dongle takes 35Mb/s of network bandwidth. You can probably then calculate if you'll have enough bandwidth or not.
@@TallPaulTechI was advised of 480mbps bus shared by all USB 2.0 devices. Not sure if that’s true or not. I didn’t want to spam here so thought best to mail you. I’ve bought 2x 4 port usb 3.0 industrial hubs
Wouldn’t more antennas be a better solution? One for each sdr dongle?
You might only need a smaller, low gain antenna for one of the sdr’s or more (depending on what they’re doing), and then tailor each antenna for each use case
Yeah it would, but I don't really want a roof full of antennas. Who knows what I'll do in the future though.
@@TallPaulTech I thought of that and how it would look, yeah ppl might think what the hell is this guy up to, but if the street already knows you, it’s just a flex and better reception. 😅👍
I play piano also, so “noise/interference’ is an absolute no no, especially when listening to static rf...
Nooelec make some great LNA's and filters
Would love to see any updates you’ve done to your TV setup.
I have a question about your com splitter SP-TX-4B, the specs says it works from 1500-8000 Mhz but does it work below this frequency range ? I would like too use it from 0-2000 Mhz.
The splitter still works there but it's not a fantastic thing all round, it was just the cheapest thing I could find.
Would it not be worth bypassing the first janky split with the second cable or are you planning to use the hackrf to send?
Thanks Paul for the inspiration. Have been thinking about doing something similar but haven’t done so yet mainly because I’m not sure what to do against possible lighting strikes. Do you have any sort of protection against that?
There is no protection against a lightning strike! If lightning hits, you're fucked, pure and simple. Protection against ambient electrical charge in the air during storms maybe, but even so I haven't bothered with that either.
A discone antenna is a compromise antenna. You give up gain and selectivity in favor of a huge bandwidth. I would put up band specific antennas. Also your feed line could be loads better. I would suggest LM-400 or hardline. You then could add antenna mounted preamps (receive antennas) and reduce your systen noise figure significantly. I need to check out your server infi as I would like to do something similar with all my sdr's. Great channel, great content. Thanks.
I've already addressed this at the end of this video ruclips.net/video/jdQeTU9NZUY/видео.html
If you are feeling adventurous, you may want to try a “channeliser” rather than the splitter and filter combination. The problem with the latter is that the splitters and filters have loss which degrades the Noise Figure of the system, making the receivers less sensitive. If you know the bands of operation, a channeliser is a better choice as it performs the splitting function naturally, but with lower loss. You could also perhaps use a commercial FM/DVB-T/DVB-S triplexer, but that may constrain your receive frequency range too much.
If you could get me some links to some, I'd love to check them out. I hate the splitter and it may not be staying there.
Hi
Great video as always!
Transmitting through HackRF? What do you have in mind? ;)
Thanks cwne88 😇
Paul.....Have you ever looked at the SATNOGS system..... Sounds like it could be up your alley. John - VK4JBE
I don't know, but I'll check it out.
Hi, where did you get your splitters from?
Wherever the cheapest thing was on ebay or something. They're not fantastic.
I’ve hopefully dropped your a mail regarding my own SDR server.
You did. I saw. I thought. I don't know!
The one thing I can tell you, is that 2MHz of RF bandwidth from an RTL dongle takes 35Mb/s of network bandwidth. You can probably then calculate if you'll have enough bandwidth or not.
@@TallPaulTechI was advised of 480mbps bus shared by all USB 2.0 devices. Not sure if that’s true or not. I didn’t want to spam here so thought best to mail you. I’ve bought 2x 4 port usb 3.0 industrial hubs
I had 4 going on a Raspberry Pi 4 once
@@TallPaulTech Yep I’ve done the same but the pi then struggled to process. I wanted to keep it all on one system ideally. More power
what happened to your fk off massive monitor?
It's my music machine monitor.