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Marcus D. Leech
,Â
fasleitung3
4
Feb 21
An interesting puzzle
On 2026-02-21 16:47, 'fasleitung3' via Society of Amateur Radio Astronomers wrote: > I
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An interesting puzzle
On 2026-02-21 16:47, 'fasleitung3' via Society of Amateur Radio Astronomers wrote: > I
Feb 21
Jim DÃ¥derman
, …Â
Alex P
16
Feb 21
What dish to buy, wide question
And, since the topic of Kraken Discovery Dish systems was suggested, Here is an Evaluation of the
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What dish to buy, wide question
And, since the topic of Kraken Discovery Dish systems was suggested, Here is an Evaluation of the
Feb 21
andrew....@googlemail.com
Feb 21
Direct soundcard input & large VLF aerials
Following on from my post yesterday, I have now set this new SID monitor up on a mini-PC of its own
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Direct soundcard input & large VLF aerials
Following on from my post yesterday, I have now set this new SID monitor up on a mini-PC of its own
Feb 21
Andrew Thornett
Feb 21
Aperture fever on SID Monitoring
Spent 4 hours building a 134cm VLF antenna yesterday - it was going to be 2m in size but then I
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Aperture fever on SID Monitoring
Spent 4 hours building a 134cm VLF antenna yesterday - it was going to be 2m in size but then I
Feb 21
Tom Nathe
,Â
tedcl...@gmail.com
3
Feb 20
No module found error in ezCol.
Hi Ted - The Windows installation package instructions do not match the reality of the various links
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No module found error in ezCol.
Hi Ted - The Windows installation package instructions do not match the reality of the various links
Feb 20
Don Latham
Feb 20
SPDT latching relays
Note to all: Available on Ali Express: RF Coaxial Switches DC-18GHz SMA SPDT Latching 12VDC 50ohms
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SPDT latching relays
Note to all: Available on Ali Express: RF Coaxial Switches DC-18GHz SMA SPDT Latching 12VDC 50ohms
Feb 20
Conrad Cardano
, …Â
Alex P
4
Feb 20
Field of view FOV
With an Optical Telescope, the "Field of View" is all you can see. With a Radio Telescope,
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Field of view FOV
With an Optical Telescope, the "Field of View" is all you can see. With a Radio Telescope,
Feb 20
Ayushman Tripathi
, …Â
b alex pettit jr
29
Feb 20
First Drift Scan from my 2.4m Dish with Airspy Mini and VIRGO
Hello Ayushman, Here is a plot from my 1.2m dish @ Dec + 20 Degrees VLSR Corrected Y axis : +- 100 Km
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First Drift Scan from my 2.4m Dish with Airspy Mini and VIRGO
Hello Ayushman, Here is a plot from my 1.2m dish @ Dec + 20 Degrees VLSR Corrected Y axis : +- 100 Km
Feb 20
Stephen Arbogast
2
Feb 20
Using GNU Radio for Amateur Radio Astronomy
Snow in Durango, Colorado tonight, expecting 7 inches... On Thursday, February 19, 2026 at 9:31:41 PM
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Using GNU Radio for Amateur Radio Astronomy
Snow in Durango, Colorado tonight, expecting 7 inches... On Thursday, February 19, 2026 at 9:31:41 PM
Feb 20
andrew....@googlemail.com
,Â
Alex P
2
Feb 19
Best metal paint for spraying on radio dishes using a sprayer?
Rust-Oleum Flat White perhaps ? On Thursday, February 19, 2026 at 8:01:54 PM UTC-5 andrew....@
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Best metal paint for spraying on radio dishes using a sprayer?
Rust-Oleum Flat White perhaps ? On Thursday, February 19, 2026 at 8:01:54 PM UTC-5 andrew....@
Feb 19
andrew....@googlemail.com
,Â
Stephen Arbogast
2
Feb 19
SDR Angel
Yes, I have used SDR Angel and found it very nice. I'm not sure what you mean by extra bits. It
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SDR Angel
Yes, I have used SDR Angel and found it very nice. I'm not sure what you mean by extra bits. It
Feb 19
Andrew Thornett
,Â
Alex P
3
Feb 19
Recent BAA RAG videos
Thank you Alex - 😊 Sent from Outlook for Android From: 'Alex P' via Society of Amateur Radio
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Recent BAA RAG videos
Thank you Alex - 😊 Sent from Outlook for Android From: 'Alex P' via Society of Amateur Radio
Feb 19
Tiago Baroni
, …Â
fasleitung3
14
Feb 18
Question on RMS-based integration time planning for HI observations
Hello Alex, Wolfgang, and all, Thank you again for the thoughtful discussion and for the practical
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Question on RMS-based integration time planning for HI observations
Hello Alex, Wolfgang, and all, Thank you again for the thoughtful discussion and for the practical
Feb 18
Jan Lustrup
, …Â
Eduard Mol
10
Feb 18
Last years 21cm interferomerter observation.
Great work Jan, and impressive results! When I see others tinkering with interferometers my hands are
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Last years 21cm interferomerter observation.
Great work Jan, and impressive results! When I see others tinkering with interferometers my hands are
Feb 18
Tiago Baroni
, …Â
Marcus D. Leech
11
Feb 18
HI feedhorn prototyping – early work in progress, looking for guidance
On 2026-02-18 13:40, Tiago Baroni wrote: Hi Robert, Thank you for the suggestion. Copper tape makes a
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HI feedhorn prototyping – early work in progress, looking for guidance
On 2026-02-18 13:40, Tiago Baroni wrote: Hi Robert, Thank you for the suggestion. Copper tape makes a
Feb 18
Cathal O'Donghaile
, …Â
Ayushman Tripathi
8
Feb 18
I'm in need of some feedback regarding using the Smartee V5 SDR and the new cased H1 LNA
Thank you Ayushman. I have in mind a similar test using SDRSharp when the weather improves here.
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I'm in need of some feedback regarding using the Smartee V5 SDR and the new cased H1 LNA
Thank you Ayushman. I have in mind a similar test using SDRSharp when the weather improves here.
Feb 18
Stephen Arbogast
, …Â
Marcus D. Leech
11
Feb 17
Gnu Radio for RA
Hmm sounds cool. As Marcus Leech has stated GNU Radio is based on a streaming data architecture and
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Gnu Radio for RA
Hmm sounds cool. As Marcus Leech has stated GNU Radio is based on a streaming data architecture and
Feb 17
andrew....@googlemail.com
Feb 17
18/2/2025 @ 8pm UTC. Follow up Microsoft Teams meeting to BAA Introductory Workshop on Hydrogen Line (H-Line, 1420 MHz) Radio Astronomy of Milky Way
18/2/2025 @ 8pm UTC. Follow up Microsoft Teams meeting to BAA Introductory Workshop on Hydrogen Line
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18/2/2025 @ 8pm UTC. Follow up Microsoft Teams meeting to BAA Introductory Workshop on Hydrogen Line (H-Line, 1420 MHz) Radio Astronomy of Milky Way
18/2/2025 @ 8pm UTC. Follow up Microsoft Teams meeting to BAA Introductory Workshop on Hydrogen Line
Feb 17
Andrew Thornett
, …Â
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
Dr. Rich Russel
,Â
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
Tom Crowley
, …Â
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
, …Â
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
, …Â
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
,Â
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
, …Â
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
, …Â
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