Date   

PSU Noise with #spyserver #airspyhfplus

andrea ottaviani
 

Hello.
If I connect HF Plus directly it receives good, if I connect from the server (Orange) I see all this noise and spurs.
I tried disconnecting everything.
Some time ago there have been strong lightning, about a month and this has happened since. What do you suggest?
can you try my server sdr: //ik0mmi.ddns.net?
Thanks
best 73 of IK0MMI
Andrew


Re: Need advice: Which Airspy SDR is better for DX FM? #bestpractice #experiment

h. garcia
 

A quick suggestion: you may still have analog TV transmissions from countries nearby (Tunisia, Libya, Algeria) that you can use to check your setup and as indicator of tropo openings. Lookup for a list of TV channels frequencies and their respective the audio frequencies. 


On Mon, Oct 21, 2019, 20:40 Shirley Dulcey KE1L <mark@...> wrote:
The Airspy HF+ Discovery has the best performance; a strong combination of low nose and high dynamic range. If you want to LISTEN to stations it's your best choice.

The one shortcoming of the HF+ Discovery (and the earlier HF+) is limited bandwidth. Those receivers only receive a 660 KHz wide piece of spectrum at once. That's more than wide enough for listening to FM signals, but you don't the wider overview of the band that is available on the Airspy R2 or to a slightly lesser degree on your Mini. You could use the Mini for the panoramic view and then switch to the Discovery to listen to the signals.

On Mon, Oct 21, 2019 at 5:27 PM <brieuc182@...> wrote:
Hello everyone!
I'm a FM DXer, and I have acquired an Airspy Mini 6 months ago. It was used with an omnidirectional circular FM antenna but recently, I've bought an Korner 9.2, who is actually installed. No doubt! this antenna is very efficient! However, I live in a place with an overloaded FM band: I have 17 stations with 8 - 11 kW at 17 km with very strong signals, and 4 others stations with 4 kW at 10 km, distributed from 88.0 MHz to 107.2 MHz. Their transmitters are visible from my home. I can't turn my antenna everywhere, because I want to receive tropospheric signals, and there are  mountains everywhere around me, excepted one direction: to the sea, the only possibility for practicing DX tropo. Unfortunately, my 2 local TXs are in the same direction, consequently it's impossible to segregate my local signals if my antenna is pointing to this direction :/... But I can not do otherwise. Brief, that's my problem!
My Airspy remains powerful even in that case! However, i'm looking to have better results, and there is my question: In my case, in an overloaded FM area and with an Korner 9.2: An Airspy HF+ or an Airspy Discovery could give me better results on FM band than my Airspy mini? If yes, which one of these is better?
I'm absolutely not an professional of these SDR, and read their descriptions is like reading Chinese for me...
For information, my better results with my Airspy mini are with the "Linearity" mode or "Free" mode (with various IF, Mix and LNA levels). The gain is between 13 - 17 with 6 MSPS and Decimation 16 when the Körner is pointing to the best direction, with the linear mode.
This topic is just to have some advises from this community, who seems to be very interested about Airspy's products!
Sorry if I've make some mistakes in my text, i'm a student, my English isn't totally perfect.. :/ .
Good evening everybody, and thanks for reading...
Brieuc, from Corsica (JN41JW)


Re: Need advice: Which Airspy SDR is better for DX FM? #bestpractice #experiment

Brieuc
 

Thank you for your answer!
The bandwidth isn't a problem for me, My Airspy is always set to 300 kHz bandwidth,660 kHz is indeed sufficient. I need a larger bandwidth for ATV and DAB receptions, but an Airspy mini is 100% efficient in my case on B3.
Brieuc, from Corsica (JN41JW)


Re: Community Installer

Jos Stevens
 

Hi,

Community installer is running fine on my Windows 10 Home System from start.

Jos

Op 22-10-2019 om 09:37 schreef Dennis Fitch via Groups.Io:

Still the same, am going to start removing some plugins as they don't display correctly on my system, and are not needed

Dennis G8IMN

--
Deze e-mail is gecontroleerd op virussen door AVG.
http://www.avg.com


Re: Community Installer

Dennis Fitch
 

Still the same, am going to start removing some plugins as they don't display correctly on my system, and are not needed

Dennis G8IMN


Re: Need advice: Which Airspy SDR is better for DX FM? #bestpractice #experiment

Shirley Dulcey KE1L
 

The Airspy HF+ Discovery has the best performance; a strong combination of low nose and high dynamic range. If you want to LISTEN to stations it's your best choice.

The one shortcoming of the HF+ Discovery (and the earlier HF+) is limited bandwidth. Those receivers only receive a 660 KHz wide piece of spectrum at once. That's more than wide enough for listening to FM signals, but you don't the wider overview of the band that is available on the Airspy R2 or to a slightly lesser degree on your Mini. You could use the Mini for the panoramic view and then switch to the Discovery to listen to the signals.

On Mon, Oct 21, 2019 at 5:27 PM <brieuc182@...> wrote:
Hello everyone!
I'm a FM DXer, and I have acquired an Airspy Mini 6 months ago. It was used with an omnidirectional circular FM antenna but recently, I've bought an Korner 9.2, who is actually installed. No doubt! this antenna is very efficient! However, I live in a place with an overloaded FM band: I have 17 stations with 8 - 11 kW at 17 km with very strong signals, and 4 others stations with 4 kW at 10 km, distributed from 88.0 MHz to 107.2 MHz. Their transmitters are visible from my home. I can't turn my antenna everywhere, because I want to receive tropospheric signals, and there are  mountains everywhere around me, excepted one direction: to the sea, the only possibility for practicing DX tropo. Unfortunately, my 2 local TXs are in the same direction, consequently it's impossible to segregate my local signals if my antenna is pointing to this direction :/... But I can not do otherwise. Brief, that's my problem!
My Airspy remains powerful even in that case! However, i'm looking to have better results, and there is my question: In my case, in an overloaded FM area and with an Korner 9.2: An Airspy HF+ or an Airspy Discovery could give me better results on FM band than my Airspy mini? If yes, which one of these is better?
I'm absolutely not an professional of these SDR, and read their descriptions is like reading Chinese for me...
For information, my better results with my Airspy mini are with the "Linearity" mode or "Free" mode (with various IF, Mix and LNA levels). The gain is between 13 - 17 with 6 MSPS and Decimation 16 when the Körner is pointing to the best direction, with the linear mode.
This topic is just to have some advises from this community, who seems to be very interested about Airspy's products!
Sorry if I've make some mistakes in my text, i'm a student, my English isn't totally perfect.. :/ .
Good evening everybody, and thanks for reading...
Brieuc, from Corsica (JN41JW)


Need advice: Which Airspy SDR is better for DX FM? #bestpractice #experiment

Brieuc
 

Hello everyone!
I'm a FM DXer, and I have acquired an Airspy Mini 6 months ago. It was used with an omnidirectional circular FM antenna but recently, I've bought an Korner 9.2, who is actually installed. No doubt! this antenna is very efficient! However, I live in a place with an overloaded FM band: I have 17 stations with 8 - 11 kW at 17 km with very strong signals, and 4 others stations with 4 kW at 10 km, distributed from 88.0 MHz to 107.2 MHz. Their transmitters are visible from my home. I can't turn my antenna everywhere, because I want to receive tropospheric signals, and there are  mountains everywhere around me, excepted one direction: to the sea, the only possibility for practicing DX tropo. Unfortunately, my 2 local TXs are in the same direction, consequently it's impossible to segregate my local signals if my antenna is pointing to this direction :/... But I can not do otherwise. Brief, that's my problem!
My Airspy remains powerful even in that case! However, i'm looking to have better results, and there is my question: In my case, in an overloaded FM area and with an Korner 9.2: An Airspy HF+ or an Airspy Discovery could give me better results on FM band than my Airspy mini? If yes, which one of these is better?
I'm absolutely not an professional of these SDR, and read their descriptions is like reading Chinese for me...
For information, my better results with my Airspy mini are with the "Linearity" mode or "Free" mode (with various IF, Mix and LNA levels). The gain is between 13 - 17 with 6 MSPS and Decimation 16 when the Körner is pointing to the best direction, with the linear mode.
This topic is just to have some advises from this community, who seems to be very interested about Airspy's products!
Sorry if I've make some mistakes in my text, i'm a student, my English isn't totally perfect.. :/ .
Good evening everybody, and thanks for reading...
Brieuc, from Corsica (JN41JW)


Re: Getting started again after a year or more, need a little help

Ray, W4BYG <w4byg@...>
 

Thank you .  That works...
Ray

On 10/21/2019 4:42 AM, prog wrote:
On Mon, Oct 21, 2019 at 10:37 AM, Ray, W4BYG wrote:
In the menu setup, the source is defaulted to "Airspy"  The device serial number says "none".  (I don't recognize a SN on the box to insert manually).  Should the unit register it self or is it one of the long skew numbers on the side of the box?
For HF+ you should select "Airspy HF+ Dual / Discovery" in the source selector:


--
Socialism ia a philosphy of failure, the creed of ignorance and the gospel of envy.
It's inherent virtue is the equal sharing of misery...  Winston Churchill

Virus-free. www.avg.com


Re: Transmission lines, Input match and Connectors #bestpractice #experiment

jdow
 

Type-N is not much better than BNC. If the shell is pulled off a type N or BNC male you can "accidentally" plug BNC into N or N into BNC. If you want precision you want something like APC-7 or SMA.

{o.o}

On 20191020 16:35:57, doug wrote:
On 10/19/2019 10:20 PM, jdow wrote:
Um, tell that to HP.

BNC barrel attenuators are good probably to 20 dB. I have lower
attenuation units - 3 dB and 6 dB sort of things. (At HF I like to use
them because they provide a nice leakage path to deal with static build
up issues.)

{o.o}

On 20191019 13:02:42, doug wrote:

/snip/
 I do have
some BNC coaxial attenuators I can use. I have to dig them out. It's an
archeological expedition time.

{^_^}
Hi, Joanne--
Surely you of all people know that BNC attenuators are not very good
attenuators at any VHF or higher frequency. Fine for HF, unless you need
a lot of attenuation.

--doug, WA2SAY
Well, you do agree that BNC attenuators are only really useful at HF. Good. I am concerned about a blanket recommendation of BNC attenuators
among those who are not experienced in the RF field. I would endorse TNC
types, at least to 1 GHz, altho they are not in common use, and certainly Type N, all the way to X-Band, at least. If anyone reading this is considering buying attenuators for RF and microwave frequencies,
please go to Google and check the manufacturer's specifications first!
Do check e-bay--sometimes you get lucky! (When you get the device, test
it with an ohmmeter! It could have been blown out by exposure to high power. If so, send it back!)
(Thank goodness, there are [to my knowledge] no UHF attenuators.  I have been campaigning [without success] against all use of UHF connectors for any RF use for years! All my radios and antennas are
connected thru adapters to type N or BNC. At least BNC's are 50 Ohms,
even if they do leak RF. And they don't take a 200 Watt soldering
iron to assemble to coax!)
--doug, WA2say


Re: Airspy R2 SDR architecture

Bob
 

Thank you Sergio. That is what I couldn't find again.


Re: Getting started again after a year or more, need a little help

prog
 

On Mon, Oct 21, 2019 at 10:37 AM, Ray, W4BYG wrote:
In the menu setup, the source is defaulted to "Airspy".  The device serial number says "none".  (I don't recognize a SN on the box to insert manually).  Should the unit register it self or is it one of the long skew numbers on the side of the box?
For HF+ you should select "Airspy HF+ Dual / Discovery" in the source selector:


Re: Transmission lines, Input match and Connectors #bestpractice #experiment

doug
 

On 10/19/2019 10:20 PM, jdow wrote:
Um, tell that to HP.

BNC barrel attenuators are good probably to 20 dB. I have lower
attenuation units - 3 dB and 6 dB sort of things. (At HF I like to use
them because they provide a nice leakage path to deal with static build
up issues.)

{o.o}

On 20191019 13:02:42, doug wrote:

/snip/

I do have
some BNC coaxial attenuators I can use. I have to dig them out. It's an
archeological expedition time.

{^_^}
Hi, Joanne--
Surely you of all people know that BNC attenuators are not very good
attenuators at any VHF or higher frequency. Fine for HF, unless you need
a lot of attenuation.

--doug, WA2SAY
Well, you do agree that BNC attenuators are only really useful at HF. Good. I am concerned about a blanket recommendation of BNC attenuators
among those who are not experienced in the RF field. I would endorse TNC
types, at least to 1 GHz, altho they are not in common use, and certainly Type N, all the way to X-Band, at least. If anyone reading this is considering buying attenuators for RF and microwave frequencies,
please go to Google and check the manufacturer's specifications first!
Do check e-bay--sometimes you get lucky! (When you get the device, test
it with an ohmmeter! It could have been blown out by exposure to high power. If so, send it back!)

(Thank goodness, there are [to my knowledge] no UHF attenuators. I have been campaigning [without success] against all use of UHF connectors for any RF use for years! All my radios and antennas are
connected thru adapters to type N or BNC. At least BNC's are 50 Ohms,
even if they do leak RF. And they don't take a 200 Watt soldering
iron to assemble to coax!)

--doug, WA2say


Getting started again after a year or more, need a little help

Ray, W4BYG <w4byg@...>
 

I have an HF+ purchased over a year ago.  Wasn't very successful using it then, the gain seemed low, so I set it aside.  I've recently downloaded and installed the new SDR# v1.0.01731.  I connected the HF+ to my desktop via USB and a multiband vertical.

Device Manager recognizes the HF+ and the the LED on the HF+ is on so it is connected to the computer and receiving power and capable of receiving signals.

In the menu setup, the source is defaulted to "Airspy".  The device serial number says "none".  (I don't recognize a SN on the box to insert manually).  Should the unit register it self or is it one of the long skew numbers on the side of the box?

The gain is set to a mid position.  Full gain doesn't help.  I don't remember or know how, to go any further.

Consequently, I'm getting no indication of any signals received on any frequency.

What am I missing?  Your help would be appreciated.
Ray, W4BYG

  

Virus-free. www.avg.com


Re: Transmission lines, Input match and Connectors #bestpractice #experiment

kb3cs
 

the Windsor Star article reminds me of this story:
  https://hackaday.com/2019/05/15/the-great-ohio-key-fob-mystery-or-honey-i-jammed-the-neighborhood/

  - 1g (base 57) -


On Fri, Oct 18, 2019 at 10:52 AM, prog wrote:
[...] What could happen, however, is all these non-linearity problems that could be introduced by bad contacts (mostly in connectors), bad cables, and even rusty metallic structures surrounding the antenna that could mix signals and translate them into unexpected frequencies. Here's an example from the recent memory: https://www.pressreader.com/canada/windsor-star/20191009/281517932872802
I have seen this happen too many times to ignore it. Many experienced ops overlook these details.


Re: Airspy R2 SDR architecture

Sergio Sarabia
 


Re: Airspy R2 SDR architecture

Sergio Sarabia
 


Re: Airspy R2 SDR architecture

Bob
 

Thank you all for your replies, but this thread seems to have wandered off topic a little.
I was looking for information as to the gain, attenuator and detector adjustment capabilities within an Airspy R2. 


Re: Airspy R2 SDR architecture

prog
 

Highly recommended for ADSB receivers near base stations:

http://shop.sysmocom.de/products/cf1090-kt30


Re: Airspy R2 SDR architecture

Ian Brooks
 

Another explanation could be that if you are in a poor coverage area, mobile phones nearby will be transmitting at maximum power. Is the interference on the base station transmit frequency or the mobile transmit frequency?

Ian Brooks, former Vodafone Base Station maintenance Engineer.


Re: Community Installer

Rodrigo Pérez
 

Hi,

Some antivirus detect installers created with NSIS as virus. The installer download sdr# files and plugins at install time so, the files are the same. 
Now I change some parameters in the creation of the installer and upload the new version. Tested with virustotal.com and only one antivirus detect as virus https://www.virustotal.com/gui/file/941a5358f1a0400c97c480e1b09063812b111238369308fa6d06b7d1de3d9458/detection

Can you re download and try again?

Regards

El 20 de oct. de 2019 5:08 -0300, Dennis Fitch via Groups.Io <dennis.fitch@...>, escribió:
Hi, I'm not using any plugins, as I can't actually get the program to run at all, I've received several virus warnings, both from Kaspersky and Windows Defender, but even after disabling Kaspersky still won't load, all I see is an Airspy logo overlaid on my desktop for about 30 seconds, before it disappears.

Dennis G8IMN

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