I have a balun, and the balun has terminations for two wires and an SMA on the other end. I know you have probably seen it. It's the one that is made by Nooelec I think and people usually purchase this 9:1 balun with the ham it up converter. However, I was going to use this balun with a 30ft SMA cord and discone. I have the connections to connect my SDR or HackRF to the 30 foot cord, into the balun, out to two wires, then into a two wire to BNC terminal, then the BNC will go to a UHF PL 279 which is how the discone antenna is terminated. Am I using this balun correctly? If not, is there a good all encompassing reference manual that will teach me all of this stuff? My wireless communications book touches on Baluns and ununs but doesn't mention how Baluns should be used. Also, is there a way to measure impedance of the antenna and the transmission line? Would a network analyzer be used for this? I have a USB analog discovery scope which also has a network Analyzer incorporated in to its multi functions. I have a desktop function generator and desktop oscilloscope also. Just FYI if you have any suggestions you know what kind of equipment I'm working with. I have a whole lab setup at home with just about every type of measuring equipment and electronic components. I can make just about anything.
Maybe I shouldn't even use the balun with my discone and make a half wave dipole antenna? I didn't think the balun has to do with the frequency that your trying to receive, but makes sure the impedance is matched correctly so the antenna is more efficient. I was going to start reading SDR for the hobbyist soon. Hopefully that's a good reference for all this stuff. I have a million more questions, maybe I should just go read a damn book, right? Lol. Or try it and see what kind of results I get. ---------- Forwarded message ---------- From: <[email protected]> Date: Thursday, March 31, 2016 Subject: HackRF-dev Digest, Vol 41, Issue 15 To: [email protected] Send HackRF-dev mailing list submissions to [email protected] <javascript:;> To subscribe or unsubscribe via the World Wide Web, visit https://pairlist9.pair.net/mailman/listinfo/hackrf-dev or, via email, send a message with subject or body 'help' to [email protected] <javascript:;> You can reach the person managing the list at [email protected] <javascript:;> When replying, please edit your Subject line so it is more specific than "Re: Contents of HackRF-dev digest..." Today's Topics: 1. Re: cannot talk to more than one hackrf onewithUbuntu14.04 (Cam) ---------------------------------------------------------------------- Message: 1 Date: Thu, 31 Mar 2016 14:35:49 +1100 From: "Cam" <[email protected] <javascript:;>> To: "'Trek Liu'" <[email protected] <javascript:;>>, "'hackrf-dev'" <[email protected] <javascript:;>>, "'hackrf-dev'" <[email protected] <javascript:;>> Subject: Re: [Hackrf-dev] cannot talk to more than one hackrf onewithUbuntu14.04 Message-ID: <[email protected]> Content-Type: text/plain; charset="windows-1252" Here is how I fixed my Ubuntu (15.04) Pip issue, this may help you also. https://github.com/gnuradio/pybombs/issues/281 The commands were from memory so you may not need to use each one. Cam From: HackRF-dev [mailto:[email protected] <javascript:;>] On Behalf Of Trek Liu Sent: 29 March 2016 21:57 To: hackrf-dev; hackrf-dev Subject: Re: [Hackrf-dev] cannot talk to more than one hackrf onewithUbuntu14.04 Thanks for the reply, either way with sudo or not, I got this error, rock@rock-machine:~$ pybombs -p rockprefix install gnuradio gr-osmosdr PyBombs.Packager.pip - ERROR - Could not run pip list. Hm. PyBombs.Packager.pip - ERROR - Command '['pip', 'list']' returned non-zero exit status 2 and if I run pip list, I got this (error in the end) rock@rock-machine:~$ pip list adium-theme-ubuntu (0.3.4) alabaster (0.7.7) apt-xapian-index (0.45) argparse (1.2.1) Babel (2.2.0) chardet (2.0.1) Cheetah (2.4.4) colorama (0.2.5) command-not-found (0.3) debtagshw (0.1) decorator (3.4.0) defer (1.0.6) dirspec (13.10) docutils (0.12) duplicity (0.6.23) html5lib (0.999) httplib2 (0.8) imagesize (0.7.0) Jinja2 (2.8) lockfile (0.8) lxml (3.3.3) MarkupSafe (0.23) matplotlib (1.3.1) nose (1.3.7) numpy (1.8.2) oauthlib (0.6.1) oneconf (0.3.7.14.4.1) PAM (0.4.2) pexpect (3.1) Pillow (2.3.0) pip (1.5.4) piston-mini-client (0.7.5) plex (2.0.0.dev0) PyBOMBS (2.0.1) pycrypto (2.6.1) pycups (1.9.66) Pygments (2.1.3) pygobject (3.12.0) PyOpenGL (3.0.2) pyOpenSSL (0.13) pyparsing (2.0.1) pyserial (2.6) pysmbc (1.0.14.1) Exception: Traceback (most recent call last): File "/usr/lib/python2.7/dist-packages/pip/basecommand.py", line 122, in main status = self.run(options, args) File "/usr/lib/python2.7/dist-packages/pip/commands/list.py", line 80, in run self.run_listing(options) File "/usr/lib/python2.7/dist-packages/pip/commands/list.py", line 142, in run_listing self.output_package_listing(installed_packages) File "/usr/lib/python2.7/dist-packages/pip/commands/list.py", line 151, in output_package_listing if dist_is_editable(dist): File "/usr/lib/python2.7/dist-packages/pip/util.py", line 366, in dist_is_editable req = FrozenRequirement.from_dist(dist, []) File "/usr/lib/python2.7/dist-packages/pip/__init__.py", line 286, in from_dist assert len(specs) == 1 and specs[0][0] == '==' AssertionError Storing debug log for failure in /home/rock/.pip/pip.log ------------------ Original ------------------ From: "hackrf-dev";<[email protected] <javascript:;>>; Date: Tue, Mar 29, 2016 06:52 PM To: "Trek Liu"<[email protected] <javascript:;>>; "hackrf-dev"<[email protected] <javascript:;>>; Subject: Re: [Hackrf-dev] cannot talk to more than one hackrf onewithUbuntu14.04 Why run pybombs as root it will ask for sudo when it needs access, other than that it will install everything in your home area I think the default used to be target. On 29/03/2016 10:19, Trek Liu wrote: > Hi, I uninstalled gnuradio and gr-osmosdr and tried using pybombs to reinstall again. However, I got stuck herewhen I do step four on https://github.com/gnuradio/pybombs/, pybombs [-p myprefix] install gnuradio gr-osmosdrI got these errors, rock@rock-machine:~$ sudo pybombs -p rockprefix install gnuradio gr-osmosdr PyBombs.Packager.pip - ERROR - Could not run pip list. Hm. PyBombs.Packager.pip - ERROR - Command '['pip', 'list']' returned non-zero exit status 2 I did a google search and found some similar complaints from other people, is this bug resolved or not? should I revert back toan earlier versin of pybombs? thanks. > > > > > > ------------------ Original ------------------ > From: "hackrf-dev";<[email protected] <javascript:;>>; > Date: Tue, Mar 29, 2016 10:50 AM > To: "hackrf-dev"<[email protected] <javascript:;>>; > > Subject: Re: [Hackrf-dev] cannot talk to more than one hackrf one withUbuntu14.04 > > > > Use pybombs ( http://pybombs.info/ ) to install the latest gnuradio, gr-osmosdr and everything that it needs. The packages in most Linux distributions are not the latest and greatest normally, there are exceptions like pentoo. > > On 29/03/2016 02:43, Trek Liu wrote: > > Thanks, but both libhackrf and gr-osmosdr are up to date, I am running out of ideas. rock@rock-machine:~$ sudo apt-get install libhackrf-dev Reading package lists... Done Building dependency tree Reading state information... Done libhackrf-dev is already the newest version. 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. rock@rock-machine:~$ sudo apt-get install gr-osmosdr Reading package lists... Done Building dependency tree Reading state information... Done gr-osmosdr is already the newest version. 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. ------------------ Original ------------------ From: "Cinaed Simson";<[email protected] <javascript:;>>; Date: Tue, Mar 29, 2016 05:29 AM To: "hackrf-dev"<[email protected] <javascript:;>>; Subject: Re: [Hackrf-dev] cannot talk to more than one hackrf one withUbuntu 14.04 See if you can upgrade gr-osmosdr: apt-get install gr-osmosdr When you start grc, it should print out the serial numbers of all the HackRF devices it finds - and indicate if it's a match or it's skipping it based on the serial number you provided. Note, I'm assuming you upgraded libhackrf when you upgraded the firmware and the cpld. -- Cinaed On 03/28/2016 06:12 AM, Trek Liu wrote: nope, tried already and does not work, again the same rx led lit from the same device regardless of the -a options on the command line as below, rock@rock-machine:~$ osmocom_fft -a hackrf=2f58b5e1 linux; GNU C++ version 4.8.2; Boost_105400; UHD_003.005.005-0-unknown gr-osmosdr 0.1.1 (0.1.1) gnuradio 3.7.2.1 built-in source types: file osmosdr fcd rtl rtl_tcp uhd hackrf bladerf rfspace Using HackRF One with firmware 2015.07.2 Using Volk machine: avx_64_mmx_orc rock@rock-machine:~$ osmocom_fft -a hackrf=2f5e8ee1 linux; GNU C++ version 4.8.2; Boost_105400; UHD_003.005.005-0-unknown gr-osmosdr 0.1.1 (0.1.1) gnuradio 3.7.2.1 built-in source types: file osmosdr fcd rtl rtl_tcp uhd hackrf bladerf rfspace Using HackRF One with firmware 2015.07.2 Using Volk machine: avx_64_mmx_orc Orock@rock-machine:~$ osmocom_fft -a hackrf=377f1125 linux; GNU C++ version 4.8.2; Boost_105400; UHD_003.005.005-0-unknown gr-osmosdr 0.1.1 (0.1.1) gnuradio 3.7.2.1 built-in source types: file osmosdr fcd rtl rtl_tcp uhd hackrf bladerf rfspace Using HackRF One with firmware 2015.07.2 Using Volk machine: avx_64_mmx_orc rock@rock-machine:~$ ------------------ Original ------------------ *From: * "Alexandru Csete";<[email protected] <javascript:;>>; *Date: * Mon, Mar 28, 2016 09:08 PM *To: * "Trek Liu"<[email protected] <javascript:;>>; *Cc: * "hackrf-dev"<[email protected] <javascript:;>>; *Subject: * Re: [Hackrf-dev] cannot talk to more than one hackrf one with Ubuntu 14.04 On Mon, Mar 28, 2016 at 2:50 PM, Trek Liu <[email protected] <javascript:;>> wrote: I am running ubuntu 14.04, with three HackRF one devices connected to the system. All three were with the 2015.07.2 firmware and the CPLD programs were also updated individually. HackRF_info can identify all three devices (see below), however when I run osmocom_fft with -a hackrf=0/1/2 options, the same HackRF device is always selected for streaming instead of the specified ones by -a hackrf=options (I can see the RX led lit from the same device every time). Same thing is observed with Gnuradio-companion. could anyone give a clue? Accroding to the gr-osmosdr wiki page, one can use the serial number instead of the device index: http://sdr.osmocom.org/trac/wiki/GrOsmoSDR#HackRFSourceSink Maybe that works better. Alex _______________________________________________ HackRF-dev mailing list [email protected] <javascript:;> https://pairlist9.pair.net/mailman/listinfo/hackrf-dev _______________________________________________ HackRF-dev mailing list [email protected] <javascript:;> https://pairlist9.pair.net/mailman/listinfo/hackrf-dev > > _______________________________________________ HackRF-dev mailing list [email protected] <javascript:;> https://pairlist9.pair.net/mailman/listinfo/hackrf-dev -------------- next part -------------- An HTML attachment was scrubbed... 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