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ka9q-radio

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N1GP, … Phil Karn6

Jan 9

A potentially useful C program 'ka9q_hpsdr'

There seems to be a bewildering variety of protocols out there for networked SDRs, many proprietary

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A potentially useful C program 'ka9q_hpsdr'

There seems to be a bewildering variety of protocols out there for networked SDRs, many proprietary

Jan 9

Andy Z - K1RA, … Phil Karn10

Jan 9

My New Favorite SDR app

i was about to say the same thing. Looking from out here in southern California, most of what i see

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My New Favorite SDR app

i was about to say the same thing. Looking from out here in southern California, most of what i see

Jan 9

N1GP, … Franco Venturi22

12/18/25

The RX-888 mkII uses the Rafael Micro R828D chip. There are no datasheets publicly available for the

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The RX-888 mkII uses the Rafael Micro R828D chip. There are no datasheets publicly available for the

12/18/25

N1GP, Phil Karn3

12/7/25

How to delete an old SSRC / RX ?

Tnx Phil, yes it did vanish, although it seemed to stick around longer than 20 sec? I'll have to

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How to delete an old SSRC / RX ?

Tnx Phil, yes it did vanish, although it seemed to stick around longer than 20 sec? I'll have to

12/7/25

2/21/25

Fobos SDR - radiod - ka9q-web // no audio from browser // spectrum discontinuity

In setting up ka9q-radio and ka9q-web I now have a working setup. With the nice browser GUI. KA9Q-WEB

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Fobos SDR - radiod - ka9q-web // no audio from browser // spectrum discontinuity

In setting up ka9q-radio and ka9q-web I now have a working setup. With the nice browser GUI. KA9Q-WEB

2/21/25

2/21/25

Fobos SDR - stuttering audio

In the meantime I tried the Raspberry Pi4B and had about the same result. I now have built it on bare

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Fobos SDR - stuttering audio

In the meantime I tried the Raspberry Pi4B and had about the same result. I now have built it on bare

2/21/25

2/17/25

amsq mode & squelch

Is anyone able to get amsq mode working? I tried receiving CB using am mode and that works fine. I

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amsq mode & squelch

Is anyone able to get amsq mode working? I tried receiving CB using am mode and that works fine. I

2/17/25

Phil Karn, … Franco Venturi3

2/13/25

make DYNAMIC the default?

I agree with Dave that it is a very good idea. Many times I had to butcher ka9q-radio Makefile to

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make DYNAMIC the default?

I agree with Dave that it is a very good idea. Many times I had to butcher ka9q-radio Makefile to

2/13/25

John Ackermann N8UR

2/12/25

TAPR announces RF Limiter for receiver protection

I needed to protect a sensitive 6M LNA from the 6M kilowatt amplifier and high-gain antennas we use

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TAPR announces RF Limiter for receiver protection

I needed to protect a sensitive 6M LNA from the 6M kilowatt amplifier and high-gain antennas we use

2/12/25

Jan Simons PA0SIM, … Phil Karn9

2/12/25

384kHz/768kHz problem

Thanks Franco for the info about git checkout! I found that I can see it all with "git log --

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384kHz/768kHz problem

Thanks Franco for the info about git checkout! I found that I can see it all with "git log --

2/12/25

2/10/25

Cleaning out some deadwood

The ka9q-radio package includes several commands and daemons that haven't been maintained, may

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Cleaning out some deadwood

The ka9q-radio package includes several commands and daemons that haven't been maintained, may

2/10/25

John Ackermann N8UR, … Phil Karn5

1/30/25

Airspy not found -- any way to remotely "kick" it?

Hi Erwin -- Thanks (for both emails)! I did see this thread, and tried various things to reset the

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Airspy not found -- any way to remotely "kick" it?

Hi Erwin -- Thanks (for both emails)! I did see this thread, and tried various things to reset the

1/30/25

John Ackermann N8UR, … Phil Karn15

1/14/25

Multicast configuration

Do you exclude slow ports from the VLAN? On 1/14/25 06:52, 'John Ackermann N8UR' via ka9q-

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Multicast configuration

Do you exclude slow ports from the VLAN? On 1/14/25 06:52, 'John Ackermann N8UR' via ka9q-

1/14/25

John Ackermann N8UR, … Phil Karn5

1/14/25

Problem running RX888

The local name collision messages are almost certainly normal. They happen when two hosts publish the

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Problem running RX888

The local name collision messages are almost certainly normal. They happen when two hosts publish the

1/14/25

st...@ecsykes.com, Phil Karn2

1/13/25

KA9Q-Radio and SDRPlay

At K4VZ's suggestion I've just added the ability to dynamically load device handlers (ie,

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KA9Q-Radio and SDRPlay

At K4VZ's suggestion I've just added the ability to dynamically load device handlers (ie,

1/13/25

John Ackermann N8UR

1/1/25

Multiple ka9q-radio instances on one machine

Are there any examples for how to run two instances of ka9q-radio on one box? In my case, I have two

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Multiple ka9q-radio instances on one machine

Are there any examples for how to run two instances of ka9q-radio on one box? In my case, I have two

1/1/25

Tom McDermott, … Glenn Elmore13

12/31/24

strange problem with rx888-web display

Maybe I'm having a different issue. Restarted after computer crash, restored a tab in Firefox and

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strange problem with rx888-web display

Maybe I'm having a different issue. Restarted after computer crash, restored a tab in Firefox and

12/31/24

12/30/24

Radiod@ service file

NM - got it figured out. Orv W6BI On Monday, December 30, 2024 at 12:07:50 PM UTC-8 Orv Beach wrote:

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Radiod@ service file

NM - got it figured out. Orv W6BI On Monday, December 30, 2024 at 12:07:50 PM UTC-8 Orv Beach wrote:

12/30/24

John Ackermann N8UR, Phil Karn3

12/21/24

Uses for OPUS codec in ka9q-radio?

Thanks for that, Phil. Actually, I was interested in Opus with the idea of recording the FM bands

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Uses for OPUS codec in ka9q-radio?

Thanks for that, Phil. Actually, I was interested in Opus with the idea of recording the FM bands

12/21/24

Scott Newell N5TNL2

12/6/24

How to scale spectrum demod bin amplitudes to dBm?

At 03:23 PM 11/29/2024, Scott Newell wrote: >Can anyone help me understand the ka9q-radio spectrum

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How to scale spectrum demod bin amplitudes to dBm?

At 03:23 PM 11/29/2024, Scott Newell wrote: >Can anyone help me understand the ka9q-radio spectrum

12/6/24

Jim Lill, … Phil Karn6

11/19/24

I think it's a Linux kernel issue. The network interface has to be physically up for multicast to

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I think it's a Linux kernel issue. The network interface has to be physically up for multicast to

11/19/24

Franco Venturi, Philip Gladstone2

10/11/24

Audio recording in ka9q-web

Any issues, please let me know. This is the very first version. I'm probably missing installation

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Audio recording in ka9q-web

Any issues, please let me know. This is the very first version. I'm probably missing installation

10/11/24

Jim Lill, … Tavi B10

7/20/24

Thanks for answers! I disabled the wifi because i need just one local IP to be the one configured in

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Thanks for answers! I disabled the wifi because i need just one local IP to be the one configured in

7/20/24

Rob Robinett, … Franco Venturi26

7/19/24

New RX888 Mk II for $90

The two $155 RX888s I ordered from my reliable AliExpress vendor https://www.aliexpress.com/store/

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New RX888 Mk II for $90

The two $155 RX888s I ordered from my reliable AliExpress vendor https://www.aliexpress.com/store/

7/19/24

7/7/24

Re: [wsprdaemon] Multicast instability and solution that seems to have worked

Thanks for that report. I have added the KA9Q-radio forum to this response so those subscribers might

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Re: [wsprdaemon] Multicast instability and solution that seems to have worked

Thanks for that report. I have added the KA9Q-radio forum to this response so those subscribers might

7/7/24

st...@ecsykes.com, … Michael Hauan4

7/4/24

Pi5/OPi5 ka9q-radio network.

I have 4 RX888s each connected to a computer, each of which is connected to the same, unmanaged

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Pi5/OPi5 ka9q-radio network.

I have 4 RX888s each connected to a computer, each of which is connected to the same, unmanaged

7/4/24

Rob Robinett, … Phil Karn10

6/4/24

Well, technically you *can* run other software on the Pi5 at the same time, but there's little

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Well, technically you *can* run other software on the Pi5 at the same time, but there's little

6/4/24

6/4/24

SDR comparison test at KFS shows only a small difference in WSPR reception performance between RX888, KiwiSDR and Airspy HF+

Since KA9Q-radio (and Phil and Franco's support) was essential to getting this test running, I

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SDR comparison test at KFS shows only a small difference in WSPR reception performance between RX888, KiwiSDR and Airspy HF+

Since KA9Q-radio (and Phil and Franco's support) was essential to getting this test running, I

6/4/24

Philip Gladstone, … Rob Robinett4

6/4/24

Birdies on the RX888?

I have found two potential sources of overloads in the RX888 + KA9Q-radio systems: 1). ADC overloads

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Birdies on the RX888?

I have found two potential sources of overloads in the RX888 + KA9Q-radio systems: 1). ADC overloads

6/4/24

st...@ecsykes.com, … Jim Lill3

5/27/24

KA9Q-Radio with Pi-5

https://www.reddit.com/r/raspberry_pi/comments/17ua49o/rpi_5_is_a_real_primadonna_with_its_psu/ On 5/

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KA9Q-Radio with Pi-5

https://www.reddit.com/r/raspberry_pi/comments/17ua49o/rpi_5_is_a_real_primadonna_with_its_psu/ On 5/

5/27/24

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