Squelch at maximum using HDSDR

Ridgh

Member
Joined
Sep 15, 2011
Messages
7
Hello,
I am relatively new to SDR. I got an old "no-brand" receiver and I use it mostly for air band - using the HDSDR software.
It works perfect. I use a "Double Bazooka" antenna on the roof. Receiving very well an Airport which is more than 100 miles from my location.
One problem it's the squelch on the left side of the following picture:
HDSDR.jpg

I am on almost maximal red (I use the squelch), and it doesn't look to me normal, I believe that it should be on green...
It's there anything that I can do - without "killing the fine reception?
Thanx in advance!
 

dave3825

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Premium Subscriber
Joined
Feb 17, 2003
Messages
9,127
Location
Suffolk County NY
I don't use that, but do use SDR# and SDR++ Weaker signals will land on one end and strong will land on the other. Looks as if you are actually receiving a plane over head and not the actual airport.
 

Ridgh

Member
Joined
Sep 15, 2011
Messages
7
Hello dave3825,
Thank you for the assistance!
I do hear the actual airport (control + a few aircrafts)! The aircrafts have less transmitting power - and I can hear them sometimes... well 1 from 5. I am monitoring them via flightradar24.
I tried to install another software from spyxxx website, but had no success... I downloaded from their site, unzipped, but I couldn't install.
The question is: may I have on the same PC several SDR programs without interfering or ruining any of them? I am not intending to use them together of course, but the drivers won't do any problem?
BTW, I couldn't find any link to SDR#.
 

dave3825

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Premium Subscriber
Joined
Feb 17, 2003
Messages
9,127
Location
Suffolk County NY
You can have as many programs as you like as long as they are not all running at the same time. Dongle will only connect to one at a time

Sdr#



Sdr++

 

ka3jjz

Wiki Admin Emeritus
Joined
Jul 22, 2002
Messages
25,747
Location
Bowie, Md.
RFI getting into the SDR? Not all that uncommon an issue and aircraft is AM mode....just a WAG...Mike
 

Ridgh

Member
Joined
Sep 15, 2011
Messages
7
Hello dave3825,
Thank you very much again! I'll try to d/l it again from Airpspy.
As far as I could understand from youtube, (
) at about 5:30, this looks as a small zip file, about 1.7M. I downloaded the file (5M), but the inside files were completely different from the ones I see on youtube. I tried to install, as admin, but they remined stuck in a point (after installing the driver). I am using a Lenovo PC (64G ram +Win10). I couldn't use the software...
Thank you Mike,
The zip file it's the same, as it is d/led from the same place.
Actually, the software I use works perfect for Air Band. Certainly I use AM for both airports I monitor. One is located 100++miles from my location, the second about 85 - 90 miles. A lot of traffic...
I am using 2 antennas for testing, the double Bazooka and a "flower pot" - I don't get any problem with them, both of them work perfect. My roof is at about 15m from ground.
I also use an AOR AR2002. I hear even a few radio amateurs at 145MHz and 147MHz band, very clear.
 

sunwave

Member
Joined
Jan 18, 2023
Messages
357
Location
Oklahoma
I know this issue with HDSDR. The S-Meter is not calibrated. It needs to be calibrated to 9 S-units. For each different sdr it needs to be calibrated. Use a signal generator set to -75 dbm signal level at the middle of the band of interest.
 

Ridgh

Member
Joined
Sep 15, 2011
Messages
7
Thank you sunwave,
Unfortunately, I packed my entire electronic lab, and now I don't have any available signal generator...
 

janeksp6

Member
Joined
Oct 8, 2024
Messages
16
Hello,
I am relatively new to SDR. I got an old "no-brand" receiver and I use it mostly for air band - using the HDSDR software.
It works perfect. I use a "Double Bazooka" antenna on the roof. Receiving very well an Airport which is more than 100 miles from my location.
One problem it's the squelch on the left side of the following picture:
View attachment 177305

I am on almost maximal red (I use the squelch), and it doesn't look to me normal, I believe that it should be on green...
It's there anything that I can do - without "killing the fine reception?
Thanx in advance!
Bandwidth F6 96000

Witaj dave3825,
Dziękuję za pomoc!
Słyszę rzeczywiste lotnisko (sterowanie + kilka samolotów)! Samoloty mają mniejszą moc nadawczą - i czasami je słyszę... dobrze 1 z 5. Monitoruję je za pośrednictwem flightradar24.
Próbowałem zainstalować inne oprogramowanie ze strony spyxxx, ale nie udało się... Pobrałem z ich strony, rozpakowałem, ale nie mogłem zainstalować.
Pytanie brzmi: czy mogę mieć na tym samym komputerze kilka programów SDR bez ingerencji lub zrujnowania któregokolwiek z nich? Nie mam oczywiście zamiaru używać ich razem, ale sterowniki nie zrobią żadnego problemu?
BTW, nie mogłem znaleźć żadnego linku do SDR#

@dave3825 Ile się chce ja mam HDSDR -rsp1Play, SDR Console v 03 , SDRSharp różne ver. - www. index.com SDRSharp, elektroda.pl langue u kingdom
 

Ridgh

Member
Joined
Sep 15, 2011
Messages
7
Thank you janeksp,
I believe that you mean "Output" right? I was using 44100, and got about the same results. At 96000 the only change is on the 2 bottom windows, which are now stretched to left, but nothing changed on the S meter. I have no idea what is the best number for INPUT, mine is 1411.200 kHz Sampling rate. The main influence is on the background noise - it deferrers.
 

janeksp6

Member
Joined
Oct 8, 2024
Messages
16
Thank you janeksp,
I believe that you mean "Output" right? I was using 44100, and got about the same results. At 96000 the only change is on the 2 bottom windows, which are now stretched to left, but nothing changed on the S meter. I have no idea what is the best number for INPUT, mine is 1411.200 kHz Sampling rate. The main influence is on the background noise - it deferrers.
Sampling rate ustawia się w zależności od procesora Mój dell latitude D530 CORE2DUO 2 GHz win 7 pro. 32Bit W SDRSharp ustawiony Sampling rate 2.4 kHz

Dziękuję janeksp,
Sądzę, że masz na myśli „Output”, prawda? Używałem 44100 i uzyskałem mniej więcej takie same wyniki. Przy 96000 jedyną zmianą są 2 dolne okna, które są teraz rozciągnięte w lewo, ale nic się nie zmieniło na mierniku S. Nie mam pojęcia, jaka jest najlepsza liczba dla INPUT, moja to 1411,200 kHz Sampling Rate. Główny wpływ ma szum tła - on się opóźnia.
SDR Device F8 ptaszek odznacz
 
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