Date   

Re: Received my HF+ and testing with 2 elements 40m monoband

Ruben Navarro Huedo (EA5BZ)
 

Alan....external attenuation?


Re: AirSpyHF+ macOS Server

Tudor Vedeanu
 

Great, I’ve been wanting to try SdrDx for a long time. Thanks!

~Tudor

On 10 January 2018 at 19:22:24, Chris Smolinski (csmolinski@...) wrote:

I've just released my macOS server app for the AirSpyHF+. This app lets you use your AirSpyHF+ on the Mac with the SdrDx SDR app, without any need for Windows. Works with 10.6 through 10.13.

Instructions and the download link here: https://blackcatsystems.com/software/airspyhf_macos_server.html

Chris Smolinski
Black Cat Systems
http://www.blackcatsystems.com






Re: Received my HF+ and testing with 2 elements 40m monoband

Ruben Navarro Huedo (EA5BZ)
 
Edited

Our other software doesn't measure SNR directly but it is around the same.


Re: Received my HF+ and testing with 2 elements 40m monoband

Alan G4ZFQ
 

received my HF+
We have been testing it with a 2 elements monoband beam 30m over the ground.
We are suffering saturation from broadcasting on 7200 and UP.
We own other SDR and have tested also today and they don't have this problem.
What do you think?
Ruben,

Look at the noise level, 40dB or more attenuation should be used.

73 Alan G4ZFQ


Re: OMNIRIG - SDR# Airspy HF+ Transceiver frequency sync

Donald Rasmussen
 

Hi Ruben - it is direct SDRSharp Plugin to Yaesu CAT. I modified the C# .NET code (for Kenwood) from the UzixLS project.

Connecting OMNIRIG to the Plugin may  be possible. I may look at the OMNIRIG source code sometime but at present enjoying the operation.

de Wb8yqj Don


Re: Mini or R2

Ronneil Camara <ronneilcamara@...>
 

Thank you David. My goal is to be able to build a setup that will allow me to capture full disk of earth from GOES satellite. I read from few blogs the Mini is capable. I hope those bloggers are telling the truth. Anyways, I'm worried about the other thread I saw about Airspy Mini and drivers not working well. Is Airspy Mini supported well in linux/mac and other unix variants like FreeBSD? 

On Wed, Jan 10, 2018 at 4:19 AM, David J Taylor via Groups.Io <gm8arv@...> wrote:
Hi,

I'm new to sdr. I currently have rtlsdr dongle. I use it to capture noaa weather images as well as images provided by meteor m2 from russia. I'd like to upgrade to a better device. I was told that Airspy is really nice. One of the reasons why I want to get Airspy is because of GOES satellites.

Anyways, which should I buy between R2 and Mini and why?

Thanks,

Neil
====================================

Neil,

The Mini is a simpler device (no external 10 MHz input, for example) and is hence lower cost.  I don't believe there is a lot, if any, performance difference at 137 and 1700 MHz (but I stand to be corrected).

Save money, and get a Mini (or two!).

Cheers,
David
--
SatSignal Software - Quality software written to your requirements
Web: http://www.satsignal.eu
Email: david-taylor@...
Twitter: @gm8arv





Re: Airspy Mini USB issues

cnick6
 

Bart, do you think mine has already overheated and is thus somewhat flakey..?  I wasn't aware of any other issues... so please let me know.

FWIW, my RTL-SDR v3 works fine on the exact same hardware and application.


Re: AirSpyHF+ macOS Server

Greg Whynott
 

Nice work Chris,  thanks.   I just spent some time trying and failing to do the same at home as my Mac is on the 'better side of the house'.  Will give it a go tonight.

greg



On Wed, Jan 10, 2018 at 12:22 PM, Chris Smolinski <csmolinski@...> wrote:
I've just released my macOS server app for the AirSpyHF+. This app lets you use your AirSpyHF+ on the Mac with the SdrDx SDR app, without any need for Windows.  Works with 10.6 through 10.13.

Instructions and the download link here: https://blackcatsystems.com/software/airspyhf_macos_server.html

Chris Smolinski
Black Cat Systems
http://www.blackcatsystems.com







Re: HF+ Latency

Leif Asbrink
 

Hi Shirley and All,

Latency is very important when we use SDR receivers
together with transmitters. You might be interested in
this: http://sm5bsz.com/lir/rxdel/rxdel.htm

I made several videos on the subject. This is
one of them:
https://www.youtube.com/watch?v=v_DlDSqJ8yk

DSP does not have to introduce much more latency
than analog receivers.

Some hardware causes delay by use of large buffers.
SDR-IP (Ethernet) at low sampling rates:
https://www.youtube.com/watch?v=v_DlDSqJ8yk

Low latency is needed for this:
https://www.youtube.com/watch?v=6R9cg7PpA2s


You write:
First, the A/D conversion takes some time (but a
small amount).
NO, it does not take any time.

Second, the digital data has to get to the software
somehow; if it's coming from an external source over
Ethernet, USB, or FireWire, it's getting bundled
into packets. The packet size is a tradeoff; larger
packets mean less processing overhead but a longer
wait for the data.
YES!! The same is always true. For soundcards also.

In many cases the user program can select the buffer
size, but with some other hardware there is no such option.

The SDR software probably bunches up a number of samples
and processes them all at once rather than doing it byte
by byte, so there is a delay while the processing buffer
fills.
Clever programmers use the buffer size provided by
hardware for processing. There should not be any extra
delay here.

Finally, the digital processing involves
quite a bit of computing and takes non-zero time.
Actually almost non-zero today.

Latency is mostly a buffer problem. When latency becomes
important to users I thin we will see that SDRs are
not much different from analog receivers.

73

Leif



The IC-7600 uses DSP so its latency will also be non-zero, though
lower than most SDRs. The acid test would be to compare the delay of
the SDR to reception on an analog reciever (a synthesized LO is OK,
but not DSP) which will have near-zero delay. Not zero because analog
filters cause delay; the tiny delays in amplifier stages and wire are
negligible.

Latency in an SDR comes from multiple sources. First, the A/D
conversion takes some time (but a small amount). Second, the digital
data has to get to the software somehow; if it's coming from an
external source over Ethernet, USB, or FireWire, it's getting bundled
into packets. The packet size is a tradeoff; larger packets mean less
processing overhead but a longer wait for the data. The SDR software
probably bunches up a number of samples and processes them all at once
rather than doing it byte by byte, so there is a delay while the
processing buffer fills. Finally, the digital processing involves
quite a bit of computing and takes non-zero time.


On Wed, Jan 10, 2018 at 1:54 PM, PMM <pmmeasures@...> wrote:
Got you, yes sorry had in my head sdr# rather than sdrc

Interesting.

On 10 Jan 2018 18:49, "John Fonseca" <fonsecanyc@...> wrote:

PMM,
I'm measuring the time difference between when the audio from the SDR
(either HF+ or CloudIQ) and the audio from the Icom 7600 exits the audio
mixer which all of my radios are connected to. Nothing to do with frequency
changes.

Here are the scenarios for testing:

HF+ -> USB -> PC -> SDR v3 -> USB ->Focusrite 6i6g2 -> Behringer XR12 ->
Presonus 22VSL -> USB -> PC -> Audacity
or
CloudIQ -> GB ethernet switch -> PC -> SDR v3 -> USB _> Focusrite 6i6g2 ->
Behringer XR12 -> Presonus 22VSL -> USB -> PC -> Audacity
and
Icom 7600 -> Behringer XR12 -> Presonus 22VSL -> USB -> PC -> Audacity

I tune to a QSO with one SDR plus the 7600 and record the audio. I then
identify the same audio peak on each (L/R) track, zoom in, and measure the
difference.

I'm not using Spyserver.


John
AC2SV




moderated Re: HF+ Delayed Airmail Delivery?

Mike Bott <mike_bott@...>
 

On 01/09/2018 10:51 PM, jdow wrote:
That proposed delivery time was an estimate. I don't see it as a promise. There was a far larger response than anticipated. They came closer than I was figuring they'd be. They ran afoul of "The best laid schemes o' mice an' men / Gang aft agley" in this regard.

And I sympathize with you about the postal delays. As I recall it took more than a month for my AirSpy original to reach me AFTER it had first gotten into the hands of Hong Kong Post. It was either in a cargo container on a ship or held in US customs for most of that time. I can't blame Youssef or Itead for the doings of others. Take out on Hong Kong Post or the Customs Service - or even the US PostAwful, instead.

{o.o}
And in the interest of fair play, I'm pleased that the Airspy HF+ has found its way to the house today.  :)

--
Mike


Re: Received my HF+ and testing with 2 elements 40m monoband

W0LEV
 

Outside of the garbage at the very left below 7.000 MHz, I don't see indications of saturation. 

​Possibly post a screen capture of both SDR receivers using the same SW and on the same antenna.  That could help us see the problem.  ​

Dave - WØLEV


Re: AirspyHF+

Gary
 

Only using HF side at the moment, so only HF antenna for now.


ggh



On 1/10/2018 17:09, michaeld wrote:
Not seeing much, opens in the FM band but not seeing many signals, .It does connect though.

On Wed, Jan 10, 2018 at 2:18 PM, Gary <gghiggs@...> wrote:
Got mine today....so airmail to Texas didn't take that long, shipped out from Hong Kong on 1-4-18 and today is 1-10-18, so about 6 days. Someone please try my spyserver….w5ggh.ddns.net and please report operating status. Haven't tried SpectrumSpy or AstroSpy yet, but assume they work from VHF side only. Nice touch including a usb cable. Running an RTL-SDR.com AM filter in-line on HF....all seems well so far. Anyone have plugin suggestions to make things even better?

Gary
W5GGH



Re: AirspyHF+

michaeld
 

Not seeing much, opens in the FM band but not seeing many signals, .It does connect though.

On Wed, Jan 10, 2018 at 2:18 PM, Gary <gghiggs@...> wrote:
Got mine today....so airmail to Texas didn't take that long, shipped out from Hong Kong on 1-4-18 and today is 1-10-18, so about 6 days. Someone please try my spyserver….w5ggh.ddns.net and please report operating status. Haven't tried SpectrumSpy or AstroSpy yet, but assume they work from VHF side only. Nice touch including a usb cable. Running an RTL-SDR.com AM filter in-line on HF....all seems well so far. Anyone have plugin suggestions to make things even better?

Gary
W5GGH



Re: HF+ Latency

John Fonseca <fonsecanyc@...>
 

Alex,
That's a very interesting point.  I had intentionally left the bandwidth on each SDR at max for each device  because I wanted to compare each device at it's highest sample rate.  I hadn't considered that would impact relative latency.

I replicated what you had done using two instances of SDR Console with both receivers running at the same time.  With the BW matched they were indeed very close.  When I ran the test again with the difference between the two SDRs at matched sample rate was only 20ms with the CloudIQ having less latency.

For my use case the actual bandwidth at 768 is plenty since the HF bands I operate on are less than that.  I was aware of the HF+'s limitation in that regard when I ordered it and it didn't matter to me.  But there's no reason to lower the bandwidth on the CloudIQ just to make is as "bad" as the HF+ in terms of latency.  The reason I posted was really just out of curiosity to see if anyone else had measured latency and I included my results only as a non-scientific observation.

I'm still trying to figure out of the HF+ is any better than the CloudIQ in practical terms.  I think they're both excellent and the difference in the HF+'s architecture is certainly interesting as is the very low price point.

John
AC2SV


Re: Received my HF+ and testing with 2 elements 40m monoband

prog
 

On Wed, Jan 10, 2018 at 02:29 pm, Ruben Navarro Huedo (EA5BZ) wrote:
Hello friends:
Today i have received my HF+
We have been testing it with a 2 elements monoband beam 30m over the ground.
We are suffering saturation from broadcasting on 7200 and UP.
We own other SDR and have tested also today and they don't have this problem.
What do you think?
What's the SNR of that signal in the other SDRs?


Received my HF+ and testing with 2 elements 40m monoband

Ruben Navarro Huedo (EA5BZ)
 

Hello friends:
Today i have received my HF+
We have been testing it with a 2 elements monoband beam 30m over the ground.
We are suffering saturation from broadcasting on 7200 and UP.
We own other SDR and have tested also today and they don't have this problem.
What do you think?


AirspyHF+

Gary
 
Edited

Got mine today....so airmail to Texas didn't take that long, shipped out from Hong Kong on 1-4-18 and today is 1-10-18, so about 6 days. Someone please try my spyserver….w5ggh.ddns.net (HF antenna only) and please report operating status. Haven't tried SpectrumSpy or AstroSpy yet, but assume they work from VHF side only. Nice touch including a usb cable. Running an RTL-SDR.com AM filter in-line on HF....all seems well so far. Anyone have plugin suggestions to make things even better?

Gary
W5GGH


Re: Spyserver as a Windows Service

jdow
 

Doing this with applications that bring up user interfaces this may not work. In one case I had to blow away a windows install and start over because it would lock up on boot every time I restarted the machine. These days that's not so much of a problem. I simply bring up a live Linux CD and remove the offending file.

{^_^}

On 2018-01-10 08:00, Daniel Fox wrote:
https://www.howtogeek.com/50786/using-srvstart-to-run-any-application-as-a-windows-service/
Dan
*From:*main@airspy.groups.io [mailto:main@airspy.groups.io] *On Behalf Of *Tatamare
*Sent:* Wednesday, January 10, 2018 8:53 AM
*To:* main@airspy.groups.io
*Subject:* Re: [airspy] Spyserver as a Windows Service
·To add or remove an app from the Startup tab, press the Windows Logo Key *+ R*, type*shell:startup*, and then select *OK*. This opens the Startup folder. Select *Start* . Find the app you're looking to add or remove, and press and hold (or right-click) it. Select *More* >* Open File Location*. In the file location folder, press and hold (or right-click) the app and select *Copy*. Paste the shortcut to your app into the Startup folder to have it run at startup.


Re: Spyserver as a Windows Service

jdow
 

Well, there is only one way I know of to do this. You must set your PC to automatically log you in. Only services can run before login takes place and neither spyserver nor sdrsharp is not a windows service. Google to figure out how to setup automatic login. I never use it so I don't know how to set it up off the top of my head. I look it up every time we create a brand new software images for our RSD AudioBoxes.

{^_^}

On 2018-01-10 06:51, Paul Mclaren MM0ZBH wrote:
Thanks I will try that but I think that will only work after a user logs on (but I may be wrong).   I need it to start when the PC turns on.
Regards
Paul
On 10 January 2018 at 13:53, Tatamare <yo7hhi@... <mailto:yo7hhi@...>> wrote:
*
To add or remove an app from the Startup tab, press the Windows Logo Key
*+ R*, type*shell:startup*, and then select *OK*. This opens the Startup
folder. Select *Start* . Find the app you're looking to add or remove,
and press and hold (or right-click) it. Select *More* >* Open File
Location*. In the file location folder, press and hold (or right-click)
the app and select *Copy*. Paste the shortcut to your app into the
Startup folder to have it run at startup.


Re: OMNIRIG - SDR# Airspy HF+ Transceiver frequency sync

Ruben Navarro Huedo (EA5BZ)
 

How are you doing it?
Using Omnirig or directly from FT2000 cat?

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