Date   
locked SpyServer stop working after 6 hours #spyserver #raspberrypi #RTL

Roman Koval, UR3PHP
 

Hello guys, I faced with some strange problem.

My setup is Raspberry Pi 3 with RTL-SDR. After 5-7 hours my SDR# shows like in a screenshot:

no sound, no data. 

It started to work properly after I had restarted server. 
Has anyone run into the same problem ?

Need Help Getting Started With Three Airspy Mini Dongles and SpyServer #raspberrypi #RTL #sdrsharp #software

skygizmo@...
 

Hi All,
 
 Just received three AirSpy Mini dongles.  Unfortunately, there is not much I can find on how to use them. Especially with SpyServer. Here is what I am  trying to do.
 
1) Create a SpyServer on a Raspberry pi 3 b+.  I have done that. I created three config files, one for each AirSpy dongle based on serial number. I start three services linked to each config file and dongle. All seems well.
 
2) I install SDR# on Windows 10. I can start three instances and connect to each service on the Raspberry Pi. All seems well.
 
3) I want to run ADS-B for on another machine, preferable Raspberry,  and link it to the SpyServer dongle I have set up for it. Stuck here, need help getting started. I currently use an RTL-SDR dongle and Dump1090 on a Pi 3 b+. 
 
4) I want to Capture Weather Satellite images. Need help getting started on which Windows or Raspbian solution to use so as to connect to the proper dongle made available by the SpyServer. I currently use an RTL-SDR and the same Pi.
 
5) I want to capture Aviation Chatter at the local Airport. Need to be pointed the right direction. Currently using RTL-SDR and the same Pi. 
 
 
Using the same Pi and three RTL-SDR dongles, I have gotten all of this to work. But I am hoping fix what ain't broke, (I need a project),  so that is why I obtained the AirSpy Mini dongles and am starting over. I prefer to use Raspberry but not a Raspbian fundamentalist. If Windows or another Linux OS is the way to go, I'll go that way. I prefer not to host any of these projects on the SpyServer machine but if the is the way to go, I'll go that way too. But because of future considerations, running the three projects and SpyServer on separate machine is the way I want to go. 

Any links, caveats, or help getting started on any of my projects will be sincerely appreciated.
 
Thanks!
 
John Ullom

Re: Halfband filter of airspy_set_conversion_filter_int16() #experiment

Kenji Rikitake
 

For Airspy HF+ users, I've implemented a prototype as:
https://github.com/jj1bdx/airspyhf-fmradion
(The repository name is with "hf")
The prototype is working fine so far.
Many thanks to prog for all the suggestions!
73
Kenji RIkitake, JJ1BDX

On Thu, Mar 7, 2019 at 4:44 PM prog <@prog> wrote:

On Thu, Mar 7, 2019 at 08:18 AM, Kenji Rikitake wrote:

FYI, results are here:
https://github.com/jj1bdx/airspy-fmradion

Kenji Rikitake, JJ1BDX

Thanks Kenji. This architechture is recommended when implementing single channel receivers with Airspy One.

Re: Halfband filter of airspy_set_conversion_filter_int16() #experiment

prog
 

On Thu, Mar 7, 2019 at 08:18 AM, Kenji Rikitake wrote:
FYI, results are here:
https://github.com/jj1bdx/airspy-fmradion

Kenji Rikitake, JJ1BDX
Thanks Kenji. This architechture is recommended when implementing single channel receivers with Airspy One.

Re: Halfband filter of airspy_set_conversion_filter_int16() #experiment

Kenji Rikitake
 

FYI, results are here:
https://github.com/jj1bdx/airspy-fmradion

Kenji Rikitake, JJ1BDX

On Fri, Mar 1, 2019 at 11:45 PM prog <@prog> wrote:

As explained on Twitter, that's the effect of aliasing.

Re: New Direct Sampling Transceiver IC from Texas Instruments #hardware

erik@...
 

Sure it was a simplistic example, but I was comparing it an existing SDR, not tractors or livestock.

Re: New Direct Sampling Transceiver IC from Texas Instruments #hardware

jdow
 

So do I9 processor chips.
{^_-}

On 20190305 22:59:09, Simon Brown wrote:
Also,
Look at the power dissipation, these needs a heatsink and cooling.
Simon Brown, G4ELI
www.sdr-radio.com
-----Original Message-----
From: main@airspy.groups.io <main@airspy.groups.io> On Behalf Of jdow
Sent: 06 March 2019 06:37
To: main@airspy.groups.io
Subject: Re: [airspy] New Direct Sampling Transceiver IC from Texas Instruments #hardware
Well, let's think about this. With a 3 GHz I/Q sample rate, if that is how the chip works out, you get a noise power of -174 dBm basic noise figure 1 noise plus about 95 dB leading to a base level for the A/D noise level of about -79 dBm. Without any decimation tricks that means the top end of the dynamic range is about 0 dBm. That is very respectable for any receiver. Put filters on that thing and you get very serious levels of dynamic range. Then use decimation to extend your LSBs downwards. You can increase the top end dB per dB with what decimation buys you. This toy could have a staggering dynamic range anywhere in a 1+ GHz frequency range 0 through 1+ GHs. This is the stuff that allows ad hoc repeaters without exotic filters, for example.
{^_^}

Re: New Direct Sampling Transceiver IC from Texas Instruments #hardware

Ralph A. Schmid, dk5ras
 

Exactly, you got it!! This beast opens up an exciting era for the not so price sensitive :)

With his unit a nice SDR in a small 100*160 casing in the 5k range should be possible that make a nice heart for almost any RF application in normal consumer and commercial frequency bands.

Ralph.

-----Original Message-----
From: main@airspy.groups.io [mailto:main@airspy.groups.io] On Behalf Of
jdow
Sent: Wednesday, March 6, 2019 7:37 AM
To: main@airspy.groups.io
Subject: Re: [airspy] New Direct Sampling Transceiver IC from Texas
Instruments #hardware

Well, let's think about this. With a 3 GHz I/Q sample rate, if that is how the
chip works out, you get a noise power of -174 dBm basic noise figure 1 noise
plus about 95 dB leading to a base level for the A/D noise level of about -79
dBm. Without any decimation tricks that means the top end of the dynamic
range is about 0 dBm. That is very respectable for any receiver. Put filters on
that thing and you get very serious levels of dynamic range. Then use
decimation to extend your LSBs downwards. You can increase the top end dB
per dB with what decimation buys you. This toy could have a staggering
dynamic range anywhere in a 1+ GHz frequency range 0 through 1+ GHs. This
is the stuff that allows ad hoc repeaters without exotic filters, for example.

{^_^}

On 20190305 22:09:44, erik@... wrote:
Downloaded the spec sheet - looks wonderful, but the price man.

Surprisingly 14bit too, I *think* hams are looking to 16 bit
resolution for the future are they not? Especially for this price bracket.

By comparison, Ettus B210 uses AD9361 - which I find today at $238
USD, whilst a completed B210 SDR sells for $1,216 USD (and that is
friendly USA prices), *so a
x10 markup* (but understandable).

The AFE7444
<https://c212.net/c/link/?t=0&l=en&o=2390916-
1&h=2410926770&u=http%3A%
2F%2Fwww.ti.com%2Fproduct%2FAFE7444%2Fsamplebuy%3FHQS-asc-dc-
hsc-afe74
xx-pr-sa-afe7444-wwe&a=AFE7444> I see online at retailers for $1802
USD. So I guess you have to know how to roll your own, or expect a
device nearly $15 - $20k USD.

At least it wouldn't launch with a USB interface :)

In any regard, at least we know what to expect in hobbyland, for the
next 5 - 10 years in SDR terms...

Peace.

Re: New Direct Sampling Transceiver IC from Texas Instruments #hardware

Ralph A. Schmid, dk5ras
 

Direct sampling makes the price; look into it, no LO :)

 

Ralph.

 

From: main@airspy.groups.io [mailto:main@airspy.groups.io] On Behalf Of erik@...
Sent: Wednesday, March 6, 2019 7:10 AM
To: main@airspy.groups.io
Subject: Re: [airspy] New Direct Sampling Transceiver IC from Texas Instruments #hardware

 

Downloaded the spec sheet - looks wonderful, but the price man.

Surprisingly 14bit too, I *think* hams are looking to 16 bit resolution for the future are they not? Especially for this price bracket.

By comparison, Ettus B210 uses AD9361 - which I find today at $238 USD, whilst a completed B210 SDR sells for $1,216 USD (and that is friendly USA prices), so a x10 markup (but understandable).

The AFE7444 I see online at retailers for $1802 USD. So I guess you have to know how to roll your own, or expect a device nearly $15 - $20k USD.

At least it wouldn't launch with a USB interface :)

In any regard, at least we know what to expect in hobbyland, for the next 5 - 10 years in SDR terms...

Peace.

Re: New Direct Sampling Transceiver IC from Texas Instruments #hardware

Ralph A. Schmid, dk5ras
 

Exactly. When I saw the specs, I expected a high 3 digit price – now that it even got low 4digit came not as the biggest surprise.

 

Also the specs of the additional hardware and software to make use of those specs will be above the normal hobbyists equipment.

 

Ralph, dk5ras.

 

From: main@airspy.groups.io [mailto:main@airspy.groups.io] On Behalf Of August Johnson
Sent: Tuesday, March 5, 2019 5:14 PM
To: main@airspy.groups.io
Subject: Re: [airspy] New Direct Sampling Transceiver IC from Texas Instruments #hardware

 

That line means pricing EACH if you buy 100 units. Not price for 100 units. You will be disappointed. $1800 in single unit quantities. Click on the "order now" link and TRY to add ONE to your cart. You'll see $1801.70.

 

August KG7BZ

 

 

On Tue, Mar 5, 2019 at 8:03 AM Siegfried Jackstien <siegfried.jackstien@...> wrote:

so ... when do start a group order???

should be easy o find a cheap chinese pcb manufacturer hi hi

(just hoping a bit)

dg9bfc sigi

ps ... yes that is also what i have seen price per 100 units (half a metre cut from the reel or so)

 

 

 

 

 

p chinese pc

Am 05.03.2019 um 15:45 schrieb Fred Hillhouse:

Good eye David!

 

Product,Package, Pricing in 100-unit quantities, Order now at the TI store

AFE7444 quad-channel, wideband RF-sampling transceiver,  17-mm-by-17-mm, flip-chip ball grid array (FCBGA), Starting at US$1,749.90, AFE7444IABJ

AFE7422 dual-channel, wideband RF-sampling transceiver, 17-mm-by-17-mm FCBGA, Starting at US$1,249.90,  AFE7422IABJ

 

They are $17.50/piece and $12.50/piece which is not unreasonable.

 

There are evaluation modules available at $2499 and $1999.

 

 

 

-----Original Message-----
From: main@airspy.groups.io [mailto:main@airspy.groups.io] On Behalf Of David J Taylor via Groups.Io
Sent: Tuesday, March 05, 2019 9:36 AM
To: main@airspy.groups.io
Subject: Re: [airspy] New Direct Sampling Transceiver IC from Texas Instruments #hardware

 

From: Pierre Martel

 

at 1800$ a pop. Not sure it will be available in a near futur for our type

of use.

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

 

... and I read it as $1800 for a reel of 100!  $18 each.

 

Cheers,

David

--

SatSignal Software - Quality software for you

Web: http://www.satsignal.eu

Email: david-taylor@...

Twitter: @gm8arv

 

 

 

Re: New Direct Sampling Transceiver IC from Texas Instruments #hardware

Simon Brown
 

Also,

Look at the power dissipation, these needs a heatsink and cooling.

Simon Brown, G4ELI
www.sdr-radio.com

-----Original Message-----
From: main@airspy.groups.io <main@airspy.groups.io> On Behalf Of jdow
Sent: 06 March 2019 06:37
To: main@airspy.groups.io
Subject: Re: [airspy] New Direct Sampling Transceiver IC from Texas Instruments #hardware

Well, let's think about this. With a 3 GHz I/Q sample rate, if that is how the chip works out, you get a noise power of -174 dBm basic noise figure 1 noise plus about 95 dB leading to a base level for the A/D noise level of about -79 dBm. Without any decimation tricks that means the top end of the dynamic range is about 0 dBm. That is very respectable for any receiver. Put filters on that thing and you get very serious levels of dynamic range. Then use decimation to extend your LSBs downwards. You can increase the top end dB per dB with what decimation buys you. This toy could have a staggering dynamic range anywhere in a 1+ GHz frequency range 0 through 1+ GHs. This is the stuff that allows ad hoc repeaters without exotic filters, for example.

{^_^}

Re: New Direct Sampling Transceiver IC from Texas Instruments #hardware

jdow
 

Well, let's think about this. With a 3 GHz I/Q sample rate, if that is how the chip works out, you get a noise power of -174 dBm basic noise figure 1 noise plus about 95 dB leading to a base level for the A/D noise level of about -79 dBm. Without any decimation tricks that means the top end of the dynamic range is about 0 dBm. That is very respectable for any receiver. Put filters on that thing and you get very serious levels of dynamic range. Then use decimation to extend your LSBs downwards. You can increase the top end dB per dB with what decimation buys you. This toy could have a staggering dynamic range anywhere in a 1+ GHz frequency range 0 through 1+ GHs. This is the stuff that allows ad hoc repeaters without exotic filters, for example.

{^_^}

On 20190305 22:09:44, erik@... wrote:
Downloaded the spec sheet - looks wonderful, but the price man.
Surprisingly 14bit too, I *think* hams are looking to 16 bit resolution for the future are they not? Especially for this price bracket.
By comparison, Ettus B210 uses AD9361 - which I find today at $238 USD, whilst a completed B210 SDR sells for $1,216 USD (and that is friendly USA prices), *so a x10 markup* (but understandable).
The AFE7444 <https://c212.net/c/link/?t=0&l=en&o=2390916-1&h=2410926770&u=http%3A%2F%2Fwww.ti.com%2Fproduct%2FAFE7444%2Fsamplebuy%3FHQS-asc-dc-hsc-afe74xx-pr-sa-afe7444-wwe&a=AFE7444> I see online at retailers for $1802 USD. So I guess you have to know how to roll your own, or expect a device nearly $15 - $20k USD.
At least it wouldn't launch with a USB interface :)
In any regard, at least we know what to expect in hobbyland, for the next 5 - 10 years in SDR terms...
Peace.

Re: New Direct Sampling Transceiver IC from Texas Instruments #hardware

Dana Myers
 

On 3/5/2019 10:09 PM, erik@... wrote:
Downloaded the spec sheet - looks wonderful, but the price man.

Surprisingly 14bit too, I *think* hams are looking to 16 bit resolution for the future are they not? Especially for this price bracket.

By comparison, Ettus B210 uses AD9361 - which I find today at $238 USD, whilst a completed B210 SDR sells for $1,216 USD (and that is friendly USA prices), so a x10 markup (but understandable).

Wouldn't you agree that's a bit of an apples and oranges comparison between
the AFE7444 direct-sampling at 3Gs/s with internal decimation and the B210
sampling at 62Ms/s with an RF down-converting front-end? ;-)

The AFE7444 I see online at retailers for $1802 USD. So I guess you have to know how to roll your own, or expect a device nearly $15 - $20k USD.

At least it wouldn't launch with a USB interface :)

In any regard, at least we know what to expect in hobbyland, for the next 5 - 10 years in SDR terms...

Peace.

Re: New Direct Sampling Transceiver IC from Texas Instruments #hardware

erik@...
 

Downloaded the spec sheet - looks wonderful, but the price man.

Surprisingly 14bit too, I *think* hams are looking to 16 bit resolution for the future are they not? Especially for this price bracket.

By comparison, Ettus B210 uses AD9361 - which I find today at $238 USD, whilst a completed B210 SDR sells for $1,216 USD (and that is friendly USA prices), so a x10 markup (but understandable).

The AFE7444 I see online at retailers for $1802 USD. So I guess you have to know how to roll your own, or expect a device nearly $15 - $20k USD.

At least it wouldn't launch with a USB interface :)

In any regard, at least we know what to expect in hobbyland, for the next 5 - 10 years in SDR terms...

Peace.

Re: New Direct Sampling Transceiver IC from Texas Instruments #hardware

doug
 


On 03/05/2019 04:23 PM, Marcus D. Leech wrote:
On 03/05/2019 04:18 PM, prog wrote:
If only one of these big companies (ADI, TI, Xilinx) could sponsor the development and build of a small batch for enthusiasts (who are mostly engineers anyway), it would accelerate the adoption of their products.

_.
As a retired RF Engineer, I have to say that new IC and transistor products are sampled to working engineers very quickly. As to adoption, it depends on the potential sales for any given product.
One company, which shall remain nameless, sampled me some very nice RF devices, I designed then into a product, and then I found that because we were not going to make many thousands of
the product, that they were not going to make the part any more. I was not the only engineer at the company who discovered a similar situation, and we no longer did business with this very major
supplier of RF semiconductors. Some reading this probably know the supplier I'm writing about.

As far as enthusiasts, it is obvious that there will be no production follow-on from the retired engineer or ham radio enthusiast working in his basement, so it would not be in the financial interest of
the supplier to make a development device available to these folks.

Some retired engineers are consultants, and it is possible that some companies will provide them with sample devices, but not development devices, but only those that are already in production.
I have done just a tiny bit of consulting, and I have received one or two device samples, so it does work out to that extent.

--doug, WA2SAY

Re: New Direct Sampling Transceiver IC from Texas Instruments #hardware

Siegfried Jackstien
 

come on ....  it was a nice dream ... not?!?

now dream to add such a chip to pcb ... with a good fpga single board computer etc ...

if you are fast in developing you could earn a lot :-)

greetz

sigi dg9bfc

Am 05.03.2019 um 22:13 schrieb jdow:

No - if you buy in 100 unit quantities the price is $1800 each.
{^_^}

On 20190305 06:44:13, Siegfried Jackstien wrote:
100 ... for 1700 dollar ... that is 17 bucks per chip

now we make a group order hi hi

greetz

sigi dg9bfc

Am 05.03.2019 um 12:59 schrieb Ken Alexander:
Sounds cool, but at those prices you can count me out. 😖

Ken Alexander
So Phisai, Thailand
Blog: bueng-ken.com <http://bueng-ken.com>


On Tue, Mar 5, 2019 at 7:36 PM prog <@prog <mailto:@prog>> wrote:

    ADC: 3 GSPS
    DAC: 9 GSPS
    2 or 4 TRX channels

    Check this out!

https://news.ti.com/industrys-first-integrated-quad-and-dual-channel-rf-sampling-transceivers-enable-multiantenna-wideband-systems?HQS=asc-dcs-hsc-afe74xx-twit-lp-pr-wwe

Re: New Direct Sampling Transceiver IC from Texas Instruments #hardware

jdow
 

No - if you buy in 100 unit quantities the price is $1800 each.
{^_^}

On 20190305 06:44:13, Siegfried Jackstien wrote:
100 ... for 1700 dollar ... that is 17 bucks per chip
now we make a group order hi hi
greetz
sigi dg9bfc
Am 05.03.2019 um 12:59 schrieb Ken Alexander:
Sounds cool, but at those prices you can count me out. 😖

Ken Alexander
So Phisai, Thailand
Blog: bueng-ken.com <http://bueng-ken.com>


On Tue, Mar 5, 2019 at 7:36 PM prog <@prog <mailto:@prog>> wrote:

ADC: 3 GSPS
DAC: 9 GSPS
2 or 4 TRX channels

Check this out!

https://news.ti.com/industrys-first-integrated-quad-and-dual-channel-rf-sampling-transceivers-enable-multiantenna-wideband-systems?HQS=asc-dcs-hsc-afe74xx-twit-lp-pr-wwe

Re: New Direct Sampling Transceiver IC from Texas Instruments #hardware

jdow
 

Dream on!
{^_-}

On 20190305 06:36:10, David J Taylor via Groups.Io wrote:
From: Pierre Martel
at 1800$ a pop. Not sure it will be available in a near futur for our type of use.
============================================
... and I read it as $1800 for a reel of 100!  $18 each.
Cheers,
David

Re: Smaller frequency correction steps for RTL-SDR?

jdow
 

I have thought of generating such an API on my rtlsdr.dll; but, "why?" Even with a tcxo temperature drift is a limiting factor for setting corrections and in any case the dongle center frequency has a setting step size of 7 Hz, which for me is not good enough for SSB if I want to read out the frequency.
{^_^}

On 20190305 01:46:31, prog wrote:
On Tue, Mar 5, 2019 at 10:44 AM, N8XYN wrote:
Is there any way in Sdrsharp to add a correction of less then 1 ppm?  I'm
pretty ocd and when is ssb or dsb a correction of less then can be normally
made is necessary?
No. The RTL API itself doesn't allow smaller steps.
https://github.com/steve-m/librtlsdr/blob/master/include/rtl-sdr.h#L162

Re: New Direct Sampling Transceiver IC from Texas Instruments #hardware

Marcus D. Leech
 

On 03/05/2019 04:18 PM, prog wrote:
If only one of these big companies (ADI, TI, Xilinx) could sponsor the development and build of a small batch for enthusiasts (who are mostly engineers anyway), it would accelerate the adoption of their products.