Date   

Re: #airspyhfplus #airspyhfplus

prog
 

On Sun, Feb 18, 2018 at 09:10 am, Dana Myers wrote:
You could improve
the receiver from one day to the next and not see any improvement in results
because band conditions and/or operators have changed.
Exactly. That's why lab tests are used to qualify everything. Field tests are "just" a confirmation.


Re: #airspyhfplus #airspyhfplus

Dana Myers
 

On 2/18/2018 8:45 AM, prog wrote:
On Sun, Feb 18, 2018 at 08:37 am, VE7KED wrote:
I will do a firmware  rollback with the same settings tomorrow
That's not helping. The latest firmware DOES have all the options in all the previous firmware versions. What is expected to be a useful test is to try different settings with the latest firmware.

The problem for an on-the-air test like this is that you can't really tell what
the "mix" of stations you're hearing is. It's a fun and useful qualitative test
but precision of  the results is destined to be unpredictable. You could improve
the receiver from one day to the next and not see any improvement in results
because band conditions and/or operators have changed.

However, the fact that an HF+ is even "keeping up" with the very good
IC-7610 is impressive; is the IC-7610 using the DigiSel preselector?

Cheers,
Dana  K6JQ


AirspyHF+ VHF performance in RF-dense environment

Dana Myers
 

I took my R0 & HF+ (FW R1.3) up to major radio site yesterday (Mount Diablo
in Northern California). I captured amateur packet APRS for several hours
from the summit; this site has a very wide coverage area.

Not surprising, it is a popular commercial radio site, and I was parked
within ~100m of a well-populated tower most of  the time. While I do not
know the exact mix of transmitters in the site these days, there are quite
a VHF high-band transmitters and still some paging transmitters.

Most of the reception was at 144.39MHz.

My Airspy R0 was swamped until I turned the gain to ~6 in Linearity
mode.

My AirspyHF+ didn't show any sign of the RF racket that I could discern.
Once again, that's a hot, strong VHF receiver!! Conventional amateur
radios with wideband front-ends tend to overwhelm there; the HF+ behaved
like a high-end land-mobile receiver.

Dana  K6JQ


Re: #airspyhfplus #airspyhfplus

prog
 

On Sun, Feb 18, 2018 at 08:37 am, VE7KED wrote:
I will do a firmware  rollback with the same settings tomorrow
That's not helping. The latest firmware DOES have all the options in all the previous firmware versions. What is expected to be a useful test is to try different settings with the latest firmware.


Re: AirSpy HF R1.3/1644 Preamp on/off #airspyhfplus #firmware

Peter
 

Hi Jaap,

My observations are the same as yours ... only the HF AGC On/Off buttons, and HF ATT slider, seem to have any effect for me.

It may be that the HF Preamp, and  HF Threshold,  effects are too subtle to see / hear with normal levels of HF signal and suburban background noise

Cheers,  Pete.


Re: #airspyhfplus #airspyhfplus

VE7KED
 

Lets run this again today..  I noted earlier this am that i forgot to re-set the audio level after changing the SDRsharp version so it was higher than it was yesterday but only like 5 db.  Lets see where the dust settles today and then I will do a firmware  rollback with the same settings tomorrow and see how that fairs in comparison.  Note that the only change will be firmware version with all other settings remaining exactly the same in the testing.  


Re: #airspyhfplus #airspyhfplus

VE7KED
 

I changed nothing.  The exact same settings as I had yesterday.  The only change was firmware version as it's important to not change any other variables otherwise it's pretty hard isolate any changes.

Preamp is on.  Att is off.  My noise floor on the antenna is around 90.  


Re: sdrsharp-catcontroller plugin

Ruben Navarro Huedo (EA5BZ)
 

Interesting.

A lot of thank's for info.

I will study it :-)


Re: Weird Spike on the spectrum display

prog
 

On Sun, Feb 18, 2018 at 07:09 am, hinghamdx wrote:
Good Morning All,

I see to have a visual spike at 5khz above every frequency that I listen to. If I switch to a 11 khz AM mode it seems to give off a slight hiss but nothing that really hinders listening. Of course you can't notice it all if there is station on that frequency (5 khz above). I seem to remember something like this with the Perseus back several years ago.

Keith
Hingham MA
https://airspy.groups.io/g/main/message/27711


Weird Spike on the spectrum display

Keith McGinnis
 

Good Morning All,

I see to have a visual spike at 5khz above every frequency that I listen to. If I switch to a 11 khz AM mode it seems to give off a slight hiss but nothing that really hinders listening. Of course you can't notice it all if there is station on that frequency (5 khz above). I seem to remember something like this with the Perseus back several years ago.

Keith
Hingham MA


Re: sdrsharp-catcontroller plugin

Graham
 

Not Omnirig but, sometime ago I created a simple python program to permit doppler tracking in SDRSharp from the GPredict satellite tracking program.

The basis of my program lies in a plug in called eartoearoak sdrsharp net remote and can be found here:

https://eartoearoak.com/software/sdrsharp-net-remote

The problem however was that GPredict interfaced to a radio via hamlib.

Rather than use the ear to oak sdrsharp-net-remote as a template for a plug in and create something that emulated hamlib, I choose instead to use sdrsharp-net-remote as-is and add an additional layer to translate the sdrsharp-net-remote json commands into hamlib commands which then would control the radio.

I found online a very simple hamlib server written in python created by James Ahlstrom

http://james.ahlstrom.name/hamlibserver.py

I cleaned up some of the code and added what I needed and wanted and created what I call gp2sdr.py which I use regularly to control SDRSharp from either the same computer SDRSharp is running on or via my network from a Raspberry pi running GPredict.

The Hamlib commands are very limited but this small and simple app does what I need. It could be the basis for someone else wishing to extend the concept of sdrsharp-net-remote and hamlib control for SDRSharp, perhaps as a true single plugin.

For anyone interested, my python script can be found here:

https://www.dropbox.com/sh/ppfpxyxukvconyk/AADDZUazzTyI8o62g_3v--Tma

the python script is documented with lots of comments and should be relatively easy to get going.


cheers, Graham ve3gtc

On 2018-02-18 14:15, Ruben Navarro Huedo (EA5BZ) wrote:
Now we need an Omnirig modification ;-)


Re: sdrsharp-catcontroller plugin

Ruben Navarro Huedo (EA5BZ)
 

Now we need an Omnirig modification ;-)


Re: Problem flashing to 20180216

prog
 

On Sun, Feb 18, 2018 at 03:32 am, jdow wrote:
After you flashed the unit did you unplug it and reinstall it?

{^_^}
The first question is always about README.txt.


Re: Problem flashing to 20180216

jdow
 

After you flashed the unit did you unplug it and reinstall it?

{^_^}

On 20180217 08:20, kascinoh@gmail.com wrote:
Greetings:
I am a layperson SWL, so your help and patience is of course appreciated.
1. Attempting to flash HF+ to the latest firmware.
2. Performed the "recovery procedure" as per instructions, as this is the "first" upgrade"
3. Upon executing FLASH batch file (with admin rights), I see the following:
4. I have repeated this procedure, again following the recovery instructions to no avail.
Suggestions? recommendations.
Thx, Stephen


Re: sdrsharp-catcontroller plugin

Noel f6bgc
 

Hi Dale & Andrea,
thank you very much for quick reply.
I installed dll and cat seems to work as expected ;-)
Excellent !!
73 - noel f6bgc

2018-02-18 9:33 GMT+01:00 Andrea IW0HDV <andrea.montefusco@...>:

Dlls executables are found here



Andrea Montefusco IW0HDV

On Feb 18, 2018 00:55, "Noel f6bgc" <f6bgc74@...> wrote:
Hello, 
I would like to add sdrsharp-catcontroller plugin to sdrsharp.
This plugin allow SDR# to be controlled via serial (COM) interface  with set of TS-50 receiver commands.


I added this line in Plugins.xml with no results.
<add key="SerialController" value="SDRSharp.SerialController.SerialControllerPlugin, SDRSharp.SerialController" />

I think I need the file SDRSharp.SerialController.dll , but can' find it in uzixls GitHub folder.

Who can help me ? Thank you in advance.

73 - noel f6bgc



Re: #airspyhfplus #airspyhfplus

prog
 

On Sun, Feb 18, 2018 at 02:43 am, <markobyrnes@...> wrote:
Could that not simply be related to condition ?
Before going into the unpredictable part of the setup, I want to check the actual gain settings.


locked Re: DC spike in SDR# for AirSpy HF+ #airspyhfplus on VHF #airspyhfplus

prog
 

On Sun, Feb 18, 2018 at 02:43 am, Peter Gagarinov wrote:
Hello,

I noticed a DC spike on VHF (see attached screen) along with an additional spike on the left side of FFT diagram (both marked in red). Correct IQ is on. Is there anything else I can do on SDR# side to fix this? If not - are there any plans to fix that on a firmware side (I currently use firmware 1.3).

Thanks,
Peter
SDR# runs the HF+ in Zero IF mode for sample rates 768, 384 and 192 ksps. For lower sample rates, it runs in Low-IF mode and no 1/f noise falls within the spetcrum.


locked DC spike in SDR# for AirSpy HF+ #airspyhfplus on VHF #airspyhfplus

Peter Gagarinov
 

Hello,

I noticed a DC spike on VHF (see attached screen) along with an additional spike on the left side of FFT diagram (both marked in red). Correct IQ is on. Is there anything else I can do on SDR# side to fix this? If not - are there any plans to fix that on a firmware side (I currently use firmware 1.3).

Thanks,
Peter





Re: #airspyhfplus #airspyhfplus

EI3IBB Mark
 

On Sun, Feb 18, 2018 at 01:22 am, prog wrote:
On Sun, Feb 18, 2018 at 01:20 am, VE7KED wrote:
So today's stats with the 1.3 firmware:

This doesn't tell anything about which settings work best for you.

Could that not simply be related to condition ?

 On Sun, Feb 18, 2018 at 01:22 am, prog wrote:
On Sun, Feb 18, 2018 at 01:20 am, VE7KED wrote:
So today's stats with the 1.3 firmware:

This doesn't tell anything about which settings work best for you.


Re: #airspyhfplus #airspyhfplus

prog
 

On Sun, Feb 18, 2018 at 01:20 am, VE7KED wrote:
So today's stats with the 1.3 firmware:

This doesn't tell anything about which settings work best for you.

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