Cap_Sig
-
Posts
550 -
Joined
-
Last visited
-
Days Won
27
Everything posted by Cap_Sig
-
Updates to the project coming soon! Have finally got around to working on some of the improvements and looking for further improvements as well!
-
HackRF One Confusion (Help pls)
Cap_Sig replied to Quentin James's topic in SDR - Software Defined Radio
You should have at the bottom of the post window, when typing, have the option to drag files or choose files for attachment on the post. -
Some basic things to do: More research on the mod if possible. When it refers to a "pot" that would lead to believe they mean a potentiometer. To find the value of the removed resistor just use the color code chart you already posted or here is another good source if you don't know how to read resistors http://www.resistorguide.com/resistor-color-code/ Wire size would need to be determined based on the power draw through the circuit it will be hooked up to. Most small electronic mods can use standard hookup wire, but you would again need to research the power requirements for the circuit.
-
Hackrf and OPENBTS or any BTS? - GSM and all
Cap_Sig replied to coenster711's topic in SDR - Software Defined Radio
These program requires hardware that has two channels to work. Most of the compatible hardware will have this functionality. I did a while back see an article on how to configure OpenBTS with two HackRF radios, but don't remember the details on it. The "out-of-the-box" compatible hardware is typically more expensive that sdr like the HackRF. Sometimes compatible hardware can be found on places like eBay though. There are some very helpful guides online where people show how they setup there own cell towers for events and remote locations that would have good information about hardware and setup requirements. -
HackRF One Confusion (Help pls)
Cap_Sig replied to Quentin James's topic in SDR - Software Defined Radio
Some common issues when using Windows is driver problems. Sometimes you have to completely uninstall the driver and then reinstall for it to work. I would try base settings as well. You want to also pay very close attention to which device you select from the list. It should be called "hackrf" or "bulk-in interface X". On the Linux issue, did you follow the git guide on how to check if the HackRF is detected? https://github.com/mossmann/hackrf/wiki/Getting-Started-with-HackRF-and-GNU-Radio I would verify that the radio is being seen by the os as a first step to finding a solution. This info can be found in the "Examples" section of the link. If any on the steps above don't get you HackRF working, be sure to take screenshots to help further diagnose the problems! -
If you could post a screenshot of what your are talking about it would be of help.
-
Agreed.
-
Im not sure about that exact model of ALFA card but after flashing the AP121U with the pineapple firmware you should install the networkmanager module. You may also need to use a powered USB hub to connect the adapter to the pineapple. I know there were several reports with issues connecting high power consumption adapters directly to the AP121U port.
-
Glad to here it! Looks like a nice build.
-
Did you follow the steps in the setup video? Sometime after sharing the connection, it is forgotten to configure IP settings on the pineapple connection. Also when sharing your local connection that you select the right interface for the pineapple.
-
More information would be need to know for sure. Where did you get the drive? Some drives are write protected but they are typically drives you receive from a company/etc that done want you deleting the files on them.
-
There are a few factors if it can be done. One being the cause of the stick not being recognized by the computer. Is there physical damage for example, possibly broke the USB connector, or just a corrupt drive? If you feel there is no sort of physical damage and that the drive is corrupt just do a search for data recovery programs(free and paid options) and run a scan on the drive. Since the drive is being recognized by device manager there is a chance that it is just corrupt. But there is no guarantee as to how much if any can be recovered.
-
What antenna I should use to build this PVB circuit
Cap_Sig replied to lingyueqing's topic in SDR - Software Defined Radio
I'm not familiar with the project but it looks pretty cool! Wise of an antenna you will need one for AM that is designed to operate within the frequency range used. The antenna you are using is probably tuned for MF band which is why you are probably have issues as your go to lower bands. There are several options for antenna design which can be found online with a search for VLF, LF, MF antenna designs. If you are wanting to receive on a particular frequency I would recommend you design an antenna for that frequency. When I did a lot of MF PSK31, I had made an inverted V center fed wire antenna cut to length for the band I used. Even at very low power setting I was able to send and receive over 7,000 miles. Another design consideration is typically for good receiving range in those bands, a large antenna is required due to wavelength to match the antenna. Not saying that smaller antennas cant be used but will probably have a small range. Just really depends on your intended use. I might just have to dig into this project and make me one! -
I know Windows 10 has some issues with the software but not major problems. So you have tried installing as admin? It is hard to tell without more info but it sounds to me like your drivers are not actually installing for the adapter. Not sure if you have looked at this: https://www.rtl-sdr.com/getting-the-rtl-sdr-to-work-on-windows-10/ the webpage has some info on doing so as admin which is known to help on windows 10. You may want to check on this as found on the webpage. If they were properly installed you should see the device in SdrSharp. You should look into that first, I'm sure a google search will result in some info on the topic. On your second question, yes there are some projects on github for it I believe. You should check out the Stratux project. As a pilot I have built and used one. They are a very nice raspberry pi ADS-B device for both bands. You can use a wide range of SDR radios on it. FlightBox offers a variety of parts but you can source them from many sources.
-
You may want to refer to this website: https://www.rtl-sdr.com/rtl-sdr-quick-start-guide/ It has some good information as to what is required to get SDR Sharp working with those usb adapters. A screenshot of the error could also help with resolving your issue if it continues after trying the linked guide.
-
What OS are you using? If your running linux with hostapd its just changing the settings in the config file.
-
What model of USB dongle do you have?
-
That's interesting. I have seen this to be a problem before. And the quality of the suppressors can play a big role in it as well.
-
I have heard good things about KeePass. Used it some and seems to be user friendly after playing around with it for a few minutes. But there are many good options
-
Could mod it to have 11 radios. Would be kind of costly tho.. Might just have to do it for the fun of it!
-
@barry99705 so sounds like more of a lightning strike on the network or power line? Its no fun and you always wonder if you will see more damage days later to equipment not totally cooked by the strike. I always recommend some sort of strike suppression device on feed lines from towers/masts. One local ISP will install strike suppressors at the interface box if you request it.
-
@barry99705 Like the pictures. Looks like it was a pretty cool project!
-
Whatever gets the job done. Looks like some nice little mast poles! I wouldn't worry to much about lightning especially if you have grounded them. Proper mast grounding can make it almost "invisible" to lightning hugely reducing your chances of a strike, but it is still possible.
-
I have used 30 ft of 1 in pvc before with no issue as long as you support it on the side of a house, barn, etc. for a quick temporary test with a very small antenna. I have once seen someone actually use 4 in pvc for a permanent mast at around 25 ft but wouldn't necessary recommend it. I would agree with you free standing to use metal conduit but like you said both are only for testing, not anything permanent. Was just some ideas. Good, cheap mast pole if you can find some is old oil field pipe or well casing.
-
@thedeadhand54 I would recommend the quadcopter option as well if possible. The weather balloon could be tricky to do an accurate test, especially if there is any wind that would cause it to drift one direction. You could also by cheap pvc pipe to hoist it into the air temporarily for testing then you would know what kind of tower height you are looking at as well. You could use 1" sch 40 pvc that is only a few dollars per 10 ft joint but this would probably be limited to 20-30 ft tall and still be able to hold it. How high of a tower are you thinking?
