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Jan Lustrup
, …
Marcus Fisher
4
7:45 AM
Last years 21cm interferomerter observation.
You should do a presentation at Eastern conference on this setup and results (first week of August)
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Last years 21cm interferomerter observation.
You should do a presentation at Eastern conference on this setup and results (first week of August)
7:45 AM
Cathal O'Donghaile
6:36 AM
I'm in need of some feedback regarding using the Smartee V5 SDR and the new cased H1 LNA
Good morning everyone I've been troubleshooting a problem I'm having after replacing the
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I'm in need of some feedback regarding using the Smartee V5 SDR and the new cased H1 LNA
Good morning everyone I've been troubleshooting a problem I'm having after replacing the
6:36 AM
Stephen Arbogast
, …
Marcus D. Leech
10
Feb 16
Gnu Radio for RA
On 2026-02-15 23:23, 'Stephen Arbogast' via Society of Amateur Radio Astronomers wrote: Some
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Gnu Radio for RA
On 2026-02-15 23:23, 'Stephen Arbogast' via Society of Amateur Radio Astronomers wrote: Some
Feb 16
Andrew Thornett
, …
Stephen Arbogast
14
Feb 16
How can a 50 ohm resistor be used to produce reference signal on a radio telescope with 50 ohm impedance? Surely, resistance and impedance are not the same thing.
Some thoughts about my time on two aircraft carriers during Vietnam.. I was never officially in the
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How can a 50 ohm resistor be used to produce reference signal on a radio telescope with 50 ohm impedance? Surely, resistance and impedance are not the same thing.
Some thoughts about my time on two aircraft carriers during Vietnam.. I was never officially in the
Feb 16
Ayushman Tripathi
, …
b alex pettit jr
23
Feb 16
First Drift Scan from my 2.4m Dish with Airspy Mini and VIRGO
Hi Ayushman, My correction technique is not always Perfect either :) Regards, Alex On Sunday,
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First Drift Scan from my 2.4m Dish with Airspy Mini and VIRGO
Hi Ayushman, My correction technique is not always Perfect either :) Regards, Alex On Sunday,
Feb 16
Dr. Rich Russel
,
Robert Meade
2
Feb 15
Drake's Lounge Uploaded
Great stuff this week. For Eduard, 12.2 GHz is a very common max freq for GEO Ku band satcom
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Drake's Lounge Uploaded
Great stuff this week. For Eduard, 12.2 GHz is a very common max freq for GEO Ku band satcom
Feb 15
Tiago Baroni
, …
Robert Meade
9
Feb 14
HI feedhorn prototyping – early work in progress, looking for guidance
In line with other commenters. I'd recommend copper tape instead of aluminum for this so you can
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HI feedhorn prototyping – early work in progress, looking for guidance
In line with other commenters. I'd recommend copper tape instead of aluminum for this so you can
Feb 14
Tom Crowley
, …
mike simpson
5
Feb 14
Radio Observer to a good home
Do you still have anymore Radio Observer magazines? Mike Simpson (KD6HNQ) 3662 Mt Ogden Dr, Ogden,
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Radio Observer to a good home
Do you still have anymore Radio Observer magazines? Mike Simpson (KD6HNQ) 3662 Mt Ogden Dr, Ogden,
Feb 14
Conrad Cardano
, …
andrew....@googlemail.com
4
Feb 13
Testing the NANO VNA
This is great stuff – thanks Alex – I have put it on my website as well for anyone who wishes to
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Testing the NANO VNA
This is great stuff – thanks Alex – I have put it on my website as well for anyone who wishes to
Feb 13
Andrew Thornett
Feb 13
Paradar X-400 cable
Ive Just taken delivery of a 5m run of Paradar X-400 coaxial cable, meant to be a cheaper alternative
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Paradar X-400 cable
Ive Just taken delivery of a 5m run of Paradar X-400 coaxial cable, meant to be a cheaper alternative
Feb 13
Jimmy Fransson
, …
Captain Anne Flint
11
Feb 13
My take on the SETI-Feed
Sure, but I didn't know the difference between AM and FM as late as Oktober last year and have to
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My take on the SETI-Feed
Sure, but I didn't know the difference between AM and FM as late as Oktober last year and have to
Feb 13
Stephen Arbogast
Feb 12
RF Skin Depth Without AI
See... https://en.wikipedia.org/wiki/Skin_effect
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RF Skin Depth Without AI
See... https://en.wikipedia.org/wiki/Skin_effect
Feb 12
Andrew Thornett
Feb 11
BAA GNU Radio Meeting 9 March 2026 at 20:00 UTC
You are also cordially invited to join members of the BAA at the next next GNU Radio for Radio
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BAA GNU Radio Meeting 9 March 2026 at 20:00 UTC
You are also cordially invited to join members of the BAA at the next next GNU Radio for Radio
Feb 11
Stephen Arbogast
,
Andrew Thornett
6
Feb 11
Andrew Thornett Gnu Radio Group
Just a few minutes.. Here is a link to a digital signal processing course I have found very good ...
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Andrew Thornett Gnu Radio Group
Just a few minutes.. Here is a link to a digital signal processing course I have found very good ...
Feb 11
Tom Crowley
, …
Alex P
4
Feb 9
Fw: sara-list - Google Groups: Message Pending [{IMmsv57Z6oLTKioCb2kwA_vXdQ48l41L0}]
Msg was answered .. Feb 7th. Alex
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Fw: sara-list - Google Groups: Message Pending [{IMmsv57Z6oLTKioCb2kwA_vXdQ48l41L0}]
Msg was answered .. Feb 7th. Alex
Feb 9
Dave Typinski
, …
Peet Denny
9
Feb 9
Dwingeloo-Stockert EVE experiment Doppler shifts?
Seems like an incredible feat to bounce a signal off a rock 40m km away and then receive meaningful
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Dwingeloo-Stockert EVE experiment Doppler shifts?
Seems like an incredible feat to bounce a signal off a rock 40m km away and then receive meaningful
Feb 9
Stephen Arbogast
Feb 8
Sorry about my lousy HLine test report.
It's about time that I learn Libre Office. If anyone has suggestions for a better reporting tool
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Sorry about my lousy HLine test report.
It's about time that I learn Libre Office. If anyone has suggestions for a better reporting tool
Feb 8
Conrad Cardano
,
tedcl...@gmail.com
3
Feb 8
EZRA question about galactic distance
Thank you, Ted! I appreciate your advice.. Conrad On Sunday, February 8, 2026, tedcl...@gmail.com
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EZRA question about galactic distance
Thank you, Ted! I appreciate your advice.. Conrad On Sunday, February 8, 2026, tedcl...@gmail.com
Feb 8
Ayushman Tripathi
, …
Stephen Arbogast
76
Feb 8
Observation: Airspy Mini and HackRF One under my local RFI and non-RFI conditions
No, I did not record a background reference...that is next. On Sunday, February 8, 2026 at 6:43:05 AM
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Observation: Airspy Mini and HackRF One under my local RFI and non-RFI conditions
No, I did not record a background reference...that is next. On Sunday, February 8, 2026 at 6:43:05 AM
Feb 8
andrew....@googlemail.com
, …
b alex pettit jr
8
Feb 8
Signal attenuation (loss) for common coaxial cables at around 1.42 GHz (1420 MHz), relevant for builders of amateur Hydrogen Line radio telescopes.
Thanks James for noticing the error on attenuation RG6 on the table on my website - is have corrected
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Signal attenuation (loss) for common coaxial cables at around 1.42 GHz (1420 MHz), relevant for builders of amateur Hydrogen Line radio telescopes.
Thanks James for noticing the error on attenuation RG6 on the table on my website - is have corrected
Feb 8
Robert Lucas
, …
b alex pettit jr
19
Feb 7
Alex's yagi antenna -
Hi Bob, Here's the quick test which will verify all is okay : The difference between 10K cold sky
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Alex's yagi antenna -
Hi Bob, Here's the quick test which will verify all is okay : The difference between 10K cold sky
Feb 7
Stephen Arbogast
Feb 6
Major upgrade to Linux Kernel 6.17
Everything still working.. with GNU Radio and ezRA
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Major upgrade to Linux Kernel 6.17
Everything still working.. with GNU Radio and ezRA
Feb 6
Stephen Arbogast
, …
andrew....@googlemail.com
7
Feb 6
About GNU Radio Flow Graphs
Yes, very helpful.... Thank you..... I edited the ezRAVectorLogger block, the legend, to "from
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About GNU Radio Flow Graphs
Yes, very helpful.... Thank you..... I edited the ezRAVectorLogger block, the legend, to "from
Feb 6
Chett Mitchell
,
andrew....@googlemail.com
2
Feb 5
How do I plug into the gnu radio online meetups?
I'll add you to the mailing list. Andy From: sara...@googlegroups.com <sara-list@
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How do I plug into the gnu radio online meetups?
I'll add you to the mailing list. Andy From: sara...@googlegroups.com <sara-list@
Feb 5
Tom Nathe
, …
Robert Lucas
5
Feb 4
ezCol setup issues, I'm in the weeds.
I did a search on how to find and edit the path in Win 11. In the search block, entered system
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ezCol setup issues, I'm in the weeds.
I did a search on how to find and edit the path in Win 11. In the search block, entered system
Feb 4
Stephen Arbogast
2
Feb 3
Gnu Radio in Amateur Radio Astronomy
A cool example of FM stereo radio On Tuesday, February 3, 2026 at 7:59:24 PM UTC-7 Stephen Arbogast
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Gnu Radio in Amateur Radio Astronomy
A cool example of FM stereo radio On Tuesday, February 3, 2026 at 7:59:24 PM UTC-7 Stephen Arbogast
Feb 3
Dr. Rich Russel
Feb 2
RTOP Uploaded
RTOP Feb 2026: 43 GHz Observations, DSES Moonshot preps, Orion Observation preps, meteors RTOP Feb
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RTOP Uploaded
RTOP Feb 2026: 43 GHz Observations, DSES Moonshot preps, Orion Observation preps, meteors RTOP Feb
Feb 2
andrew....@googlemail.com
,
flavio camacho
2
Feb 2
Video from BAA RAG Section GNU Radio for Radio Astronomy Sub-Group Meeting 31/1/2026
Copy thanks. On Monday, February 2, 2026, andrew.thornett via Society of Amateur Radio Astronomers
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Video from BAA RAG Section GNU Radio for Radio Astronomy Sub-Group Meeting 31/1/2026
Copy thanks. On Monday, February 2, 2026, andrew.thornett via Society of Amateur Radio Astronomers
Feb 2
Conrad Cardano
Feb 2
"Scope-in-a-box" antenna feed modification
Hi At the last RTOP meeting, I mentioned that I made some modifications to my "scope-in-a-box
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"Scope-in-a-box" antenna feed modification
Hi At the last RTOP meeting, I mentioned that I made some modifications to my "scope-in-a-box
Feb 2
andrew....@googlemail.com
Feb 1
Massive Complex SIDs today
Just to find off my posts on sudden ionospheric disturbances, there were two massive complex ones
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Massive Complex SIDs today
Just to find off my posts on sudden ionospheric disturbances, there were two massive complex ones
Feb 1