Re 2400 emission FCC 
What we don't need is
Cheap crappy products producing garbage spectrally - do the design to exceed 
the minimum !!
All spectrum users will thank you
There is enough crappy Chinese stuff being dumped in North America

Dana

Sent from my iPhone

> On Aug 6, 2017, at 1:29 AM, "hackrf-dev-requ...@greatscottgadgets.com" 
> <hackrf-dev-requ...@greatscottgadgets.com> wrote:
> 
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> Today's Topics:
> 
>   1. Re: Fwd: HackRF for preliminary FCC home test? (Chris Kuethe)
>   2. Re: Help to install last FW (hackrf_sweep) and related progs
>      (Marc P?quignot)
>   3. 1090 MHz (Andrew Rich)
>   4. Re: 1090 MHz (Kevin Reid)
>   5. Re: 1090 MHz (Andrew Rich)
>   6. Re: 1090 MHz (Andrew Rich)
>   7. Re: 1090 MHz (Andrew Rich)
>   8. Performance tuning under virtual box (Chuck McManis)
> 
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Sat, 5 Aug 2017 08:44:24 -0700
> From: Chris Kuethe <chris.kue...@gmail.com>
> To: Andrew Rich <vk4...@tech-software.net>
> Cc: Chuck McManis <chuck.mcma...@gmail.com>, Sergey Ivanov
>    <ivanov1...@gmail.com>,  Hackrf-dev <hackrf-dev@greatscottgadgets.com>
> Subject: Re: [Hackrf-dev] Fwd: HackRF for preliminary FCC home test?
> Message-ID:
>    <CAGHP0p+NcpnT0haYd=x0Z9amnUCPvEDZhHKKdzAr+8Lh9p=8...@mail.gmail.com>
> Content-Type: text/plain; charset="UTF-8"
> 
> It doesn't sound like he's trying to get out of testing; rather, he's
> trying to save time and money by not submitting a known non-compliant
> device to testing. Additionally, it might be neat if he could
> basically do the RF equivalent of continuous integration. Eventually
> he'll probably have to spend real money on real calibrated test
> equipment for his in-house R&D lab, but that might not be the best way
> to spend money at this time.
> 
> As for knowing what FCC specs to match, you can look at the test
> reports for similar products.
> 
>> On Fri, Aug 4, 2017 at 5:13 PM, Andrew Rich <vk4...@tech-software.net> wrote:
>> So basically your trying to save some dollars and get out of testing
>> 
>> Sent from my iPhone
>> 
>>> On 5 Aug 2017, at 9:47 am, Chuck McManis <chuck.mcma...@gmail.com> wrote:
>>> 
>>> What do you mean by a radio stack?
>> 
>> Many modules that implement various radio protocols run software on a
>> captive microprocessor. That software implements the protocol and drives the
>> radio electronics. For example TI offers firmware that runs on the processor
>> inside their CC3000 series chips that implement the Bluetooth protocols. If
>> a project uses their software in this chip, it can take advantage of TI's
>> efforts to get that software certified (see this:
>> http://processors.wiki.ti.com/index.php/CC3000_Product_Certification) which
>> saves time and effort.
>> 
>> For Part 15 certification (unintended emissions) you need to get a
>> certificate from a testing laboratory that is certified by the FCC. They
>> will put your product in a chamber that absorbs all RF with a wide band
>> detector and spectrum analyzer. The will detect all of the unintended
>> emissions and chart them in frequency and dBm. You take their report and a
>> certification that you aren't going to change the design, and submit that to
>> the FCC and they will give you a certification ID.
>> 
>> Note that the FCC won't accept your testing, they only accept a certified
>> lab's test results.
>> 
>> --Chuck
>> 
>>> On Fri, Aug 4, 2017 at 1:55 PM, Sergey Ivanov <ivanov1...@gmail.com> wrote:
>>> 
>>> Thank you Chuck!
>>> 
>>> I'll check this out. What do you mean by a radio stack?
>>> For now my plan is to use pre-certified modules so that my board will be
>>> certified as an unintentional radiator, which is thousands of $.
>>> But I still need to prove that the board doesn't emit Electro Magnetic
>>> Field above allowed.
>>> 
>>> 
>>> On Fri, 4 Aug 2017 at 23:35, Chuck McManis <chuck.mcma...@gmail.com>
>>> wrote:
>>>> 
>>>> I am not sure exactly what you are asking.
>>>> 
>>>> If you want to get FCC certification for your device, there is a process
>>>> it is documented at the FCC web site here:
>>>> 
>>>> https://www.fcc.gov/engineering-technology/laboratory-division/general/equipment-authorization
>>>> 
>>>> That pretty much outlines the steps. If you are using a manufacturer
>>>> supplied radio stack you may be able to leverage their certification but if
>>>> you wrote your own stack you will need to do the authorization
>>>> independently. There are a number of consultancies in the US who will 
>>>> handle
>>>> the process for you (for a fee of course). A long time ago (2006) I was on 
>>>> a
>>>> project that needed such certification and the vendor hired charged $50,000
>>>> and it took four months to complete. They did all the required paperwork 
>>>> and
>>>> followed up on all of the questions the FCC had, they also flew out an
>>>> engineer to an FCC certified test facility to get the verification tests
>>>> done. (I live in the San Francisco bay area and the FCC testing facilities
>>>> around here are typically reserved months, if not years, in advance it
>>>> seems).
>>>> 
>>>> --Chuck
>>>> 
>>>> On Fri, Aug 4, 2017 at 1:00 PM, Sergey Ivanov <ivanov1...@gmail.com>
>>>> wrote:
>>>>> 
>>>>> Is there someone who did this or similar task before?
>>>>> Any specific suggestions?
>>>>> 
>>>>> 
>>>>> 
>>>>>> On 4 August 2017 at 21:57, Andrew Rich <vk4...@internode.on.net> wrote:
>>>>>> 
>>>>>> 
>>>>>> You can do what ever you like as long as you understand the rules for a
>>>>>> licence and GNU Radio
>>>>>> 
>>>>>> Andrew
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> On 5 Aug 2017, at 4:26 am, Sergey Ivanov <ivanov1...@gmail.com> wrote:
>>>>>> 
>>>>>> Hi All!
>>>>>> 
>>>>>> I have a product which uses nRF24L01+  2.4 GHz modules for
>>>>>> communication. Now we have plans to go to North America market, and I am 
>>>>>> not
>>>>>> sure if my Chinese nRF modules can pass FCC test. If they can't, then I 
>>>>>> need
>>>>>> to re-design my PCB (now I use 2 layers logic board and nRF on a socket).
>>>>>> 
>>>>>> Can I use HackRF to imitate FCC test on my workbench?
>>>>>> 
>>>>>> 
>>>>>> _______________________________________________
>>>>>> HackRF-dev mailing list
>>>>>> HackRF-dev@greatscottgadgets.com
>>>>>> https://pairlist9.pair.net/mailman/listinfo/hackrf-dev
>>>>>> 
>>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> --
>>>>> Best Regards,
>>>>> 
>>>>> Sergey Ivanov
>>>>> +7 910 424 9895
>>>>> 
>>>>> _______________________________________________
>>>>> HackRF-dev mailing list
>>>>> HackRF-dev@greatscottgadgets.com
>>>>> https://pairlist9.pair.net/mailman/listinfo/hackrf-dev
>>>>> 
>>>> 
>>> --
>>> Best Regards,
>>> 
>>> Sergey Ivanov
>>> +7 910 424 9895
>> 
>> 
>> _______________________________________________
>> HackRF-dev mailing list
>> HackRF-dev@greatscottgadgets.com
>> https://pairlist9.pair.net/mailman/listinfo/hackrf-dev
>> 
>> 
>> _______________________________________________
>> HackRF-dev mailing list
>> HackRF-dev@greatscottgadgets.com
>> https://pairlist9.pair.net/mailman/listinfo/hackrf-dev
>> 
> 
> 
> 
> -- 
> GDB has a 'break' feature; why doesn't it have 'fix' too?
> 
> 
> ------------------------------
> 
> Message: 2
> Date: Sat, 5 Aug 2017 17:46:26 +0200
> From: Marc P?quignot <marc.pequig...@gmail.com>
> To: Andrew Rich <vk4...@tech-software.net>
> Cc: Andrew Rich <vk4...@internode.on.net>, phil.d...@gmail.com,
>    hackrf-dev@greatscottgadgets.com
> Subject: Re: [Hackrf-dev] Help to install last FW (hackrf_sweep) and
>    related progs
> Message-ID: <a99146cb-636a-15e5-6b1b-07e707414...@gmail.com>
> Content-Type: text/plain; charset="utf-8"; Format="flowed"
> 
> Andrew,
> 
> I don't think so.
> 
> I'm (was) just trying to  update my FW.
> This needs two actions, one in HackRf-one and the other in my PC (host)
> 
> I thought (may be I'm wrong) that the answers where in:
> https://github.com/mossmann/hackrf/releases/tag/v2017.02.1 
> <https://github.com/mossmann/hackrf/releases/tag/v2017.02.1>
> https://github.com/mossmann/hackrf/tree/master/host 
> <https://github.com/mossmann/hackrf/tree/master/host>
> 
> Updating the FW itself was an easy task.
> 
> Now, when I have done what is written in 
> https://github.com/mossmann/hackrf/blob/master/host/README.md I faced 
> one issue.
> 
> May be I should know and do something which is well known by everybody.
> This "cookbook" however is missing explanation for somebody who is not 
> aware of prerequisites.
> 
> That's the issue.
> 
> Solved, thanks to Phil information.
> 
> Regards
> 
> Marc, alias cuagn (F6dnh)
> 
> 
> Le 04/08/2017 ? 20:10, Andrew Rich a ?crit :
>> I think you might be thinking that apt-get download some file to your 
>> pc and u think there is a host directory missing
>> 
>> This is not the case
>> 
>> apt-get knows where to install it for you
>> 
>> A
>> 
>> Sent from my iPhone
>> 
>> On 5 Aug 2017, at 1:34 am, Marc P?quignot <marc.pequig...@gmail.com 
>> <mailto:marc.pequig...@gmail.com>> wrote:
>> 
>>> Andrew
>>> 
>>> Thank you for the precision. I was aware of this.
>>> The question (remark) should have been related to the host directory.
>>> After "|sudo apt-get install build-essential cmake libusb-1.0-0-dev 
>>> pkg-config libfftw3-dev", *where is this host directory supposed to be?*|
>>> 
>>> |Some explaination is missing.|
>>> 
>>> |With the unzip of "|
>>> https://github.com/mossmann/hackrf/archive/master.zip 
>>> <https://github.com/mossmann/hackrf/archive/master.zip>" I've it.
>>> 
>>> If I misunderstand something it is here.
>>> And explaination is welcome.
>>> 
>>> Thank you for your help
>>> 
>>> 73
>>> 
>>> Marc, alias cuagn (F6dnh)
>>> 
>>> 
>>> 
>>> Le 04/08/2017 ? 19:02, Andrew Rich a ?crit :
>>>> Marc
>>>> 
>>>> cmake ..
>>>> 
>>>> Means in LINUX ?cmake but go BACK one directory?
>>>> 
>>>> the double dot means go back one directory in LINUX
>>>> 
>>>> did it work ?
>>>> 
>>>> Andrew
>>>> 
>>>> 
>>>>> On 4 Aug 2017, at 11:57 pm, Marc P?quignot 
>>>>> <marc.pequig...@gmail.com <mailto:marc.pequig...@gmail.com>> wrote:
>>>>> 
>>>>> Just need to do...
>>>>> Not so easy.
>>>>> 
>>>>> It is said :
>>>>> 
>>>>> "##How to build the host software on Linux:
>>>>> ###Prerequisites for Linux (Debian/Ubuntu): |
>>>>> sudo apt-get install build-essential cmake libusb-1.0-0-dev 
>>>>> pkg-config libfftw3-dev|
>>>>> 
>>>>> ###Build host software on Linux:
>>>>> 
>>>>> |mkdir host/build cd host/build cmake .. ..." |
>>>>> |How cmake.. can do something in a newly and empty directory? |
>>>>> |Some information is missing |
>>>>> |I'm lost! |
>>>>> |Please help |
>>>>> |Marc , alias cuagn (F6dnh) |
>>>>> |My context : Ubuntu: 16.04.3 LTS Linux: 4.10.0-30-generic Gnuradio 
>>>>> : 3.7.9.1-2ubuntu1 |
>>>>> 
>>>>> 
>>>>> 
>>>>> 2017-08-04 14:35 GMT+02:00 Marc P?quignot <marc.pequig...@gmail.com 
>>>>> <mailto:marc.pequig...@gmail.com>>:
>>>>> 
>>>>>    Andrew,
>>>>> 
>>>>>    Mainly GNU radio.
>>>>>    Or any other tool which may help.
>>>>>    I've been outside of hackrf for two years. Need to came back now...
>>>>> 
>>>>>    Howerver, in the meean time I've found the answer to my question.
>>>>>    Not very far away...
>>>>>    https://github.com/mossmann/hackrf/releases/tag/v2017.02.1
>>>>>    <https://github.com/mossmann/hackrf/releases/tag/v2017.02.1>
>>>>>    https://github.com/mossmann/hackrf/tree/master/host
>>>>>    <https://github.com/mossmann/hackrf/tree/master/host>
>>>>> 
>>>>>    Just need to do.
>>>>>    Regards
>>>>> 
>>>>>    Marc alias cuagn (F6dnh)
>>>>> 
>>>>>    2017-08-04 14:28 GMT+02:00 Andrew Rich <vk4...@internode.on.net
>>>>>    <mailto:vk4...@internode.on.net>>:
>>>>> 
>>>>>        What SW on Ubuntu are u going to use ?
>>>>> 
>>>>>        Andrew
>>>>> 
>>>>>> On 4 Aug 2017, at 7:53 pm, Marc P?quignot
>>>>>        <marc.pequig...@gmail.com
>>>>>        <mailto:marc.pequig...@gmail.com>> wrote:
>>>>>> 
>>>>>> After a long time of inactivity, i decided to restart.
>>>>>> I've first installed Ubuntu 16.04 LTS as an upgrade of my
>>>>>        old version 14
>>>>>> 
>>>>>> The I've upgraded the FW of my Hackrf-One.
>>>>>> No problem.
>>>>>> Found HackRF board 0:
>>>>>> USB descriptor string: 0000000000000000457863c8251f431f
>>>>>> Board ID Number: 2 (HackRF One)
>>>>>> Firmware Version: 2017.02.1
>>>>>> 
>>>>>> However, I've read somewhere that a lib and a program
>>>>>        need also to be updated.
>>>>>> Which one? I'm not able to find again this info.
>>>>>> Could you help please?
>>>>>> Thank you
>>>>>> 
>>>>>> cuagn
>>>>>> 
>>>>>> _______________________________________________
>>>>>> HackRF-dev mailing list
>>>>>> HackRF-dev@greatscottgadgets.com
>>>>>        <mailto:HackRF-dev@greatscottgadgets.com>
>>>>>> https://pairlist9.pair.net/mailman/listinfo/hackrf-dev
>>>>>        <https://pairlist9.pair.net/mailman/listinfo/hackrf-dev>
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>>    -- 
>>>>>    Marc P?quignot
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> -- 
>>>>> Marc P?quignot
>>>> 
>>> 
>>> _______________________________________________
>>> HackRF-dev mailing list
>>> HackRF-dev@greatscottgadgets.com 
>>> <mailto:HackRF-dev@greatscottgadgets.com>
>>> https://pairlist9.pair.net/mailman/listinfo/hackrf-dev
> 
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> ------------------------------
> 
> Message: 3
> Date: Sun, 6 Aug 2017 09:45:58 +1000
> From: Andrew Rich <vk4...@tech-software.net>
> To: hackrf-dev@greatscottgadgets.com
> Subject: [Hackrf-dev] 1090 MHz
> Message-ID: <be90840c-ff40-43e1-b23d-4dd661058...@tech-software.net>
> Content-Type: text/plain; charset="us-ascii"
> 
> Question. I have a flightaware blue rtl dongle for adsb. It picks up aircraft 
> some 100 kms away ok. But when I run it with a software defined radio I don't 
> see great amplitudes . Why is that ? I would have expected to see quite large 
> signal peaks on the sdr program . Is it because the signal is spread out over 
> 2 MHz that I can see a distinct signal strength ? Does the signal need to be 
> compressed down to a narrower bandwidth ? 
> 
> Sent from my iPhone
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> ------------------------------
> 
> Message: 4
> Date: Sat, 5 Aug 2017 17:14:06 -0700
> From: Kevin Reid <kpr...@switchb.org>
> To: Andrew Rich <vk4...@tech-software.net>
> Cc: "hackrf-dev@greatscottgadgets.com"
>    <hackrf-dev@greatscottgadgets.com>
> Subject: Re: [Hackrf-dev] 1090 MHz
> Message-ID:
>    <canksj9xwro0oqeftcw4s+oy40umedr_wtxnpiemdxqyljnd...@mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
> 
> On Sat, Aug 5, 2017 at 4:45 PM, Andrew Rich <vk4...@tech-software.net>
> wrote:
> 
>> Question. I have a flightaware blue rtl dongle for adsb. It picks up
>> aircraft some 100 kms away ok. But when I run it with a software defined
>> radio I don't see great amplitudes . Why is that ? I would have expected to
>> see quite large signal peaks on the sdr program . Is it because the signal
>> is spread out over 2 MHz that I can see a distinct signal strength ? Does
>> the signal need to be compressed down to a narrower bandwidth ?
>> 
> 
> These signals are extremely short in duration. Most SDR software does not
> display all of the input signal in the waterfall, but samples it according
> to the chosen display frame rate / scrolling speed, so any signal between
> those samples will be missed. You need a rate much greater than 60 Hz to
> consistently see these signals. (This does not mean you need a super-fast
> monitor, just that the waterfall will scroll more than one row/pixel per
> display frame.)
> 
> If you have gr-osmosdr and gr-fosphor installed, try:
> 
> osmocom_fft -F
> 
> and enter 1090M for frequency and 2.4M for sample rate. You should see
> plenty of horizontal lines flying by, as gr-fosphor is designed to use and
> display 100% of the input signal.
> 
> My own ShinySDR can also do high enough FFT rates and includes ADS-B
> decoding.
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> ------------------------------
> 
> Message: 5
> Date: Sun, 6 Aug 2017 10:20:24 +1000
> From: Andrew Rich <vk4...@tech-software.net>
> To: Kevin Reid <kpr...@switchb.org>
> Cc: "hackrf-dev@greatscottgadgets.com"
>    <hackrf-dev@greatscottgadgets.com>
> Subject: Re: [Hackrf-dev] 1090 MHz
> Message-ID: <72ef4ce6-b36e-4f7c-ab58-278f581b2...@tech-software.net>
> Content-Type: text/plain; charset="us-ascii"
> 
> Thank you Kevin
> 
> The data rate of sampling is 2MHz
> 
> I have a full install of gnu radio here perhaps I can play with some scope 
> sinks ? 
> 
> A 
> 
> Sent from my iPhone
> 
>>> On 6 Aug 2017, at 10:14 am, Kevin Reid <kpr...@switchb.org> wrote:
>>> 
>>> On Sat, Aug 5, 2017 at 4:45 PM, Andrew Rich <vk4...@tech-software.net> 
>>> wrote:
>>> Question. I have a flightaware blue rtl dongle for adsb. It picks up 
>>> aircraft some 100 kms away ok. But when I run it with a software defined 
>>> radio I don't see great amplitudes . Why is that ? I would have expected to 
>>> see quite large signal peaks on the sdr program . Is it because the signal 
>>> is spread out over 2 MHz that I can see a distinct signal strength ? Does 
>>> the signal need to be compressed down to a narrower bandwidth ? 
>> 
>> These signals are extremely short in duration. Most SDR software does not 
>> display all of the input signal in the waterfall, but samples it according 
>> to the chosen display frame rate / scrolling speed, so any signal between 
>> those samples will be missed. You need a rate much greater than 60 Hz to 
>> consistently see these signals. (This does not mean you need a super-fast 
>> monitor, just that the waterfall will scroll more than one row/pixel per 
>> display frame.)
>> 
>> If you have gr-osmosdr and gr-fosphor installed, try:
>> 
>> osmocom_fft -F
>> 
>> and enter 1090M for frequency and 2.4M for sample rate. You should see 
>> plenty of horizontal lines flying by, as gr-fosphor is designed to use and 
>> display 100% of the input signal.
>> 
>> My own ShinySDR can also do high enough FFT rates and includes ADS-B 
>> decoding.
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> ------------------------------
> 
> Message: 6
> Date: Sun, 6 Aug 2017 10:24:18 +1000
> From: Andrew Rich <vk4...@tech-software.net>
> To: Kevin Reid <kpr...@switchb.org>
> Cc: "hackrf-dev@greatscottgadgets.com"
>    <hackrf-dev@greatscottgadgets.com>
> Subject: Re: [Hackrf-dev] 1090 MHz
> Message-ID: <c8dc95e3-fb44-4da6-9f0e-827802693...@tech-software.net>
> Content-Type: text/plain; charset="us-ascii"
> 
> When I mentioned not being able to see distinct pulses
> 
> I was describing after recording in gqrx and then opening the file in 
> inspectrum
> 
> My mission is to make an rtl-sdr based 1090 MHz 2 MHz oscilloscope type view 
> showing transponder pulses
> 
> Like OOK on steroids 
> 
> A
> 
> Sent from my iPhone
> 
>>> On 6 Aug 2017, at 10:14 am, Kevin Reid <kpr...@switchb.org> wrote:
>>> 
>>> On Sat, Aug 5, 2017 at 4:45 PM, Andrew Rich <vk4...@tech-software.net> 
>>> wrote:
>>> Question. I have a flightaware blue rtl dongle for adsb. It picks up 
>>> aircraft some 100 kms away ok. But when I run it with a software defined 
>>> radio I don't see great amplitudes . Why is that ? I would have expected to 
>>> see quite large signal peaks on the sdr program . Is it because the signal 
>>> is spread out over 2 MHz that I can see a distinct signal strength ? Does 
>>> the signal need to be compressed down to a narrower bandwidth ? 
>> 
>> These signals are extremely short in duration. Most SDR software does not 
>> display all of the input signal in the waterfall, but samples it according 
>> to the chosen display frame rate / scrolling speed, so any signal between 
>> those samples will be missed. You need a rate much greater than 60 Hz to 
>> consistently see these signals. (This does not mean you need a super-fast 
>> monitor, just that the waterfall will scroll more than one row/pixel per 
>> display frame.)
>> 
>> If you have gr-osmosdr and gr-fosphor installed, try:
>> 
>> osmocom_fft -F
>> 
>> and enter 1090M for frequency and 2.4M for sample rate. You should see 
>> plenty of horizontal lines flying by, as gr-fosphor is designed to use and 
>> display 100% of the input signal.
>> 
>> My own ShinySDR can also do high enough FFT rates and includes ADS-B 
>> decoding.
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> ------------------------------
> 
> Message: 7
> Date: Sun, 6 Aug 2017 10:31:32 +1000
> From: Andrew Rich <vk4...@tech-software.net>
> To: Kevin Reid <kpr...@switchb.org>
> Cc: "hackrf-dev@greatscottgadgets.com"
>    <hackrf-dev@greatscottgadgets.com>
> Subject: Re: [Hackrf-dev] 1090 MHz
> Message-ID: <d2d58dee-640e-4657-99af-5c6adc2ba...@tech-software.net>
> Content-Type: text/plain;    charset=us-ascii
> 
> I am wondering if I can read the I and Q file with a script language such as 
> perl and make a display 
> 
> I have used perl and gd graph for this before
> 
> A 
> 
> Sent from my iPhone
> 
>> On 6 Aug 2017, at 10:14 am, Kevin Reid <kpr...@switchb.org> wrote:
>> 
>> gr-fosphor
> 
> 
> 
> ------------------------------
> 
> Message: 8
> Date: Sat, 5 Aug 2017 19:14:11 -0700
> From: Chuck McManis <chuck.mcma...@gmail.com>
> To: Hackrf-dev <hackrf-dev@greatscottgadgets.com>
> Subject: [Hackrf-dev] Performance tuning under virtual box
> Message-ID:
>    <cahtjpirolkd-q76rou9gzksqyhn_l8x9d8jndjmiagcvhkv...@mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
> 
> For reasons that are sad, I have been trying to re-create my previous
> HackRF set up under virtual box. But if I try to use the ALSA Audio sink
> under virtual box it goes nuts (in a bad way) stuttering, gui hangs, lots
> of aUaUaUaUaU in the console. If I put it to a WAV file then go back and
> play the wave file its mostly fine (an occasional stutter but otherwise
> solid). So that suggests to me there is some 'trick' to using audio sinks
> in virtual box. Has anyone tweaked this to work for them? (I did slow the
> audio stream to 16kHz to see if that helps, and at least it doesn't hang
> the gui but it doesn't actually reproduce acceptable audio either. And yes
> I've got the all the Vbox helper extensions installed)
> 
> --Chuck
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> 
> Subject: Digest Footer
> 
> _______________________________________________
> HackRF-dev mailing list
> HackRF-dev@greatscottgadgets.com
> https://pairlist9.pair.net/mailman/listinfo/hackrf-dev
> 
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> ------------------------------
> 
> End of HackRF-dev Digest, Vol 59, Issue 6
> *****************************************
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