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Re: HF+ Questions
OK,
Simon Brown, G4ELI
From: main@SDR-Radio.groups.io [mailto:main@SDR-Radio.groups.io] On Behalf Of Tony_AD0VC
Sent: 29 September 2017 03:25 To: main@SDR-Radio.groups.io Subject: [SDR-Radio] HF+ Questions
I looked at the Airspy site and read what they had on the HF+. Some info seems to be missing:
Does anybody know?
Tony ad0vc |
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HF+ Questions
Tony_AD0VC
I looked at the Airspy site and read what they had on the HF+. Some info seems to be missing:
Does anybody know?
Tony
ad0vc
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Re: HF+ Comparison
chutton12000
There are differences in windowing techniques. You have a tradeoff between spectral bin leakage, sidelobes and resolution.
This may make no difference if all you are doing is looking at strong signals and don't care about high accuracy. But for more demanding uses like looking at small signals near a strong signal or phase noise of a signal, it can be important.
Chuck From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of Nick Hall-Patch <nhp@...>
Sent: Thursday, September 28, 2017 4:22 PM To: main@SDR-Radio.groups.io Subject: Re: [SDR-Radio] HF+ Comparison OK, didn't know whether "Youssef" windowing was unique to the HF+, especially as I know nothing about it. I haven't seen big differences using different windowing for the same receiver, but maybe, when there is a moment, same windowing for both SDRs
being evaluated?
Again appreciate your work on this.
On Thu, Sep 28, 2017 at 11:09 PM, Simon Brown
<simon@...> wrote:
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Re: HF+ Comparison
Nick Hall-Patch
OK, didn't know whether "Youssef" windowing was unique to the HF+, especially as I know nothing about it. I haven't seen big differences using different windowing for the same receiver, but maybe, when there is a moment, same windowing for both SDRs being evaluated? Again appreciate your work on this. On Thu, Sep 28, 2017 at 11:09 PM, Simon Brown <simon@...> wrote:
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Re: HF+ Comparison
There’s a list of options for Windowing, for some reason I had Youssef selected on the NetSDR.
Simon Brown, G4ELI
From: main@SDR-Radio.groups.io [mailto:main@SDR-Radio.groups.io] On Behalf Of Nick Hall-Patch
understood...but why is "Youssef" windowing being used for the NetSDR?....that's what comes up when I click on the NetSDR screenshots... Thanks again. Nick |
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Re: HF+ Comparison
Nick Hall-Patch
understood...but why is "Youssef" windowing being used for the NetSDR?....that's what comes up when I click on the NetSDR screenshots... Thanks again.On Thu, Sep 28, 2017 at 10:51 PM, Simon Brown <simon@...> wrote:
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Re: HF+ Comparison
Hi,
This is the FFT Windowing, see https://en.wikipedia.org/wiki/Window_function Youssef is the brains department at Airspy, he designed his own algorithm. It’s really something for the CW / very narrow signals.
Simon Brown, G4ELI
From: main@SDR-Radio.groups.io [mailto:main@SDR-Radio.groups.io] On Behalf Of Nick Hall-Patch
Quick question, probably indicating how far I am out of my depth.....but the couple of NetSDR displays I looked at in your link used "Youssef" windowing, which I don't know about.....whereas the HF+ displays used more conventional windowing. Why "Youssef" windowing for the NetSDR please? Thanks. Nick
On Thu, Sep 28, 2017 at 9:44 PM, Simon Brown <simon@...> wrote:
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Re: HF+ Comparison
Nick Hall-Patch
Quick question, probably indicating how far I am out of my depth.....but the couple of NetSDR displays I looked at in your link used "Youssef" windowing, which I don't know about.....whereas the HF+ displays used more conventional windowing. Why "Youssef" windowing for the NetSDR please? On Thu, Sep 28, 2017 at 9:44 PM, Simon Brown <simon@...> wrote:
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HF+ Comparison
So,
Done properly (or at least better) this time: http://sdr-radio.com/AirspyHFPlus
Simon Brown, G4ELI
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Re: SDR-Console – v3.0 preview 6, cannot edit "Favorites" data
Hi,
In the Favourites bar select Organiser.
Simon Brown, G4ELI
From: main@SDR-Radio.groups.io [mailto:main@SDR-Radio.groups.io] On Behalf Of rbuck@...
Hi, I can't seem to edit the favorites data in SDR-Console – v3.0 preview 6 . The menu drops down and new frequency data can be entered but it doesn't retain the new values. Randall, KM6LPW |
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SDR-Console – v3.0 preview 6, cannot edit "Favorites" data
rbuck@...
Hi, I can't seem to edit the favorites data in SDR-Console – v3.0 preview 6 . The menu drops down and new frequency data can be entered but it doesn't retain the new values. Randall, KM6LPW
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Re: HF+ WX Reception
G4LOH lives close to me, maybe he should have a go 😊
Simon Brown, G4ELI
From: main@SDR-Radio.groups.io [mailto:main@SDR-Radio.groups.io] On Behalf Of paul newcombe
Sent: 28 September 2017 18:35 To: main@SDR-Radio.groups.io Subject: Re: [SDR-Radio] HF+ WX Reception
Well if the HF bands are that bad then am I correct in assuming that you will be testing the Airspy HF+ on 2m EME rather than going to the pub?
Paul N2EME
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of Simon Brown <simon@...>
Hah – I do have other things to do 😊 .
Bands are crap at the moment, very impressed with VHF.
Simon Brown, G4ELI
From: main@SDR-Radio.groups.io [mailto:main@SDR-Radio.groups.io] On Behalf Of carl.physics
Simon, How did the "serious" testing go? Carl
On Sep 28, 2017 9:34 AM, "Simon Brown" <simon@...> wrote:
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Re: HF+ WX Reception
paul newcombe <G6YZC@...>
Well if the HF bands are that bad then am I correct in assuming that you will be testing the Airspy HF+ on 2m EME rather than going to the pub?
Paul N2EME From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of Simon Brown <simon@...>
Sent: Thursday, September 28, 2017 12:18 PM To: main@SDR-Radio.groups.io Subject: Re: [SDR-Radio] HF+ WX Reception Hah – I do have other things to do 😊 .
Bands are crap at the moment, very impressed with VHF.
Simon Brown, G4ELI
From: main@SDR-Radio.groups.io [mailto:main@SDR-Radio.groups.io]
On Behalf Of carl.physics
Simon, How did the "serious" testing go? Carl
On Sep 28, 2017 9:34 AM, "Simon Brown" <simon@...> wrote:
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Re: HF+ WX Reception
carl.physics
Simon, Sorry. I thought you told us you sent the hf+ to someone to do some serious testing and that it would return last tuesday. Not trying to push you. Just very interested. Carl On Sep 28, 2017 3:00 AM, "Simon Brown" <simon@...> wrote:
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Re: HF+ WX Reception
Michael Serowik
Very impressive!!!
Mike- N3BSQ
From: main@SDR-Radio.groups.io [mailto:main@SDR-Radio.groups.io] On Behalf Of Simon Brown
Sent: Thursday, September 28, 2017 12:19 PM To: main@SDR-Radio.groups.io Subject: Re: [SDR-Radio] HF+ WX Reception
Hah – I do have other things to do 😊 .
Bands are crap at the moment, very impressed with VHF.
Simon Brown, G4ELI
From: main@SDR-Radio.groups.io [mailto:main@SDR-Radio.groups.io] On Behalf Of carl.physics
Simon, How did the "serious" testing go? Carl
On Sep 28, 2017 9:34 AM, "Simon Brown" <simon@...> wrote:
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Re: HF+ WX Reception
Thanks Simon, that says alot about the new Airspy Vincent On Thu, Sep 28, 2017 at 9:00 AM, Simon Brown <simon@...> wrote:
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Re: HF+ WX Reception
Hah – I do have other things to do 😊 .
Bands are crap at the moment, very impressed with VHF.
Simon Brown, G4ELI
From: main@SDR-Radio.groups.io [mailto:main@SDR-Radio.groups.io] On Behalf Of carl.physics
Simon, How did the "serious" testing go? Carl
On Sep 28, 2017 9:34 AM, "Simon Brown" <simon@...> wrote:
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Re: HF+ WX Reception
carl.physics
Simon, How did the "serious" testing go? Carl On Sep 28, 2017 9:34 AM, "Simon Brown" <simon@...> wrote:
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Re: HF+ WX Reception
Well,
I would say ‘quite possibly’ – I’m sure MDS is better and dynamic range also. I must use the NetSDR’s downconverter to be sure of this. Prior to the HF+ I’ve been using the Airspy R2 which I’m sure is a tad better than the NetSDR+Downconverter.
Simon Brown, G4ELI
From: main@SDR-Radio.groups.io [mailto:main@SDR-Radio.groups.io] On Behalf Of vincent
Simon, even better than the NetSDR with down converter? Vincent
On Thu, Sep 28, 2017 at 12:56 AM, Simon Brown <simon@...> wrote:
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Re: HF+ WX Reception
Gymnae
It's getting colder, reception is getting better, it's getting more and more time for release. Hopefully mass production is ramped up before Christmas that some of the dark days of November can be spent signal hunting. When is it coming already! Let's smash F5 some more... |
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