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Society of Amateur Radio Astronomers

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JERRY TAYLOR, Alex P2

12:00 PM

Hello Jerry, This drift scan @ +60Dec is from my 1.2m Dish 18Feb23 Cheers, Alex P

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Hello Jerry, This drift scan @ +60Dec is from my 1.2m Dish 18Feb23 Cheers, Alex P

12:00 PM

Stephen Arbogast, … Marcus D. Leech7

Apr 21

Bob's design of an LNA front end for Hydrogen LIne observations with 50 Ohm referencece switching

On 2026-04-21 01:50, Richard Flagg wrote: > > All, > > I also watched Bob's

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Bob's design of an LNA front end for Hydrogen LIne observations with 50 Ohm referencece switching

On 2026-04-21 01:50, Richard Flagg wrote: > > All, > > I also watched Bob's

Apr 21

andrew....@googlemail.com, James Abshier2

Apr 21

Is there any benefit to using any other type of feed other than cantenna or loop feed for a small amateur radio astronomy dish for hydrogen line work & is there any benefit to adding a sleeve balun on Loop Feed?

Ideally, the loop and dipole feeds should be balanced feed lines. The balund provides the transition

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Is there any benefit to using any other type of feed other than cantenna or loop feed for a small amateur radio astronomy dish for hydrogen line work & is there any benefit to adding a sleeve balun on Loop Feed?

Ideally, the loop and dipole feeds should be balanced feed lines. The balund provides the transition

Apr 21

Andrew Thornett

Apr 21

Video from inaugural meeting of BAA Muon Detection Sub-group 20/4/2026

Video from inaugural meeting of BAA Muon Detection Sub-group 20/4/2026. Click here to view video:

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Video from inaugural meeting of BAA Muon Detection Sub-group 20/4/2026

Video from inaugural meeting of BAA Muon Detection Sub-group 20/4/2026. Click here to view video:

Apr 21

Ayushman Tripathi, b alex pettit jr6

Apr 20

15-Day Drift Scan at Dec +40 Degrees from my 2.4 m Dish

Attached is an example of the IFavg format for *.txt Input and the *.csv output *.CSV format as

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15-Day Drift Scan at Dec +40 Degrees from my 2.4 m Dish

Attached is an example of the IFavg format for *.txt Input and the *.csv output *.CSV format as

Apr 20

andrew....@googlemail.com, Alex P2

Apr 20

Which is brightest part of the Milky Way in hydrogen to use for testing performance of small amateur radio telescopes?

On Monday, April 20, 2026 at 1:47:13 PM UTC-4 andrew....@googlemail.com wrote: Another conversation

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Which is brightest part of the Milky Way in hydrogen to use for testing performance of small amateur radio telescopes?

On Monday, April 20, 2026 at 1:47:13 PM UTC-4 andrew....@googlemail.com wrote: Another conversation

Apr 20

andrew....@googlemail.com

Apr 20

WEDNESDAY 22 APRIL 2026 START TIME: 19:00 UTC / 20:00 BST. BAA RAG VLF Group Meeting #2 (Detection of solar flares and SIDs via VLF monitoring)

Reminder that the next BAA VLF/SIDs meeting will be this week on Wednesday 22 April 2026 @ 19:00 UTC

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WEDNESDAY 22 APRIL 2026 START TIME: 19:00 UTC / 20:00 BST. BAA RAG VLF Group Meeting #2 (Detection of solar flares and SIDs via VLF monitoring)

Reminder that the next BAA VLF/SIDs meeting will be this week on Wednesday 22 April 2026 @ 19:00 UTC

Apr 20

andrew....@googlemail.com

Apr 20

FW: 18 May 2026: 19:00 UTC, 20:00 BST: BAA Muon Detection Sub-Group Meeting #2

Thank to everybody who took part in the inaugural meeting of the new BAA Muon Detection Sub-Group

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FW: 18 May 2026: 19:00 UTC, 20:00 BST: BAA Muon Detection Sub-Group Meeting #2

Thank to everybody who took part in the inaugural meeting of the new BAA Muon Detection Sub-Group

Apr 20

Dr. Rich Russel

Apr 20

Drake's Lounge Apr 2026 Uploaded

Drakes Apr 2026: OH Maser Variability, DIY Dish Tours, and Ultra‑Low‑Noise H‑Line Front Ends Drakes

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Drake's Lounge Apr 2026 Uploaded

Drakes Apr 2026: OH Maser Variability, DIY Dish Tours, and Ultra‑Low‑Noise H‑Line Front Ends Drakes

Apr 20

Apr 20

Fw: Student grant

We have a student who received a SuperSID grant and needs assistance. If you can help, please contact

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Fw: Student grant

We have a student who received a SuperSID grant and needs assistance. If you can help, please contact

Apr 20

Bascombe Wilson

Apr 19

SETI Institute Online Presentation - Tuesday, April 21, 2026

SETI Institute open online meeting and screening of "Small Town Universe." With

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SETI Institute Online Presentation - Tuesday, April 21, 2026

SETI Institute open online meeting and screening of "Small Town Universe." With

Apr 19

Eduard Mol, … b alex pettit jr11

Apr 19

Hydrogen line driftscan mapping

Hello Eduard, Okay. Looks like you have gone in detail through all the math :) It appeared on your

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Hydrogen line driftscan mapping

Hello Eduard, Okay. Looks like you have gone in detail through all the math :) It appeared on your

Apr 19

Apr 18

Next step please

Hello Alex, I think this is the right one. So I guess I hook the dish up to the computer now. Thanks

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Next step please

Hello Alex, I think this is the right one. So I guess I hook the dish up to the computer now. Thanks

Apr 18

flavio camacho, b alex pettit jr5

Apr 18

What do I do next.

Copy that. On Saturday, April 18, 2026, 'b alex pettit jr' via Society of Amateur Radio

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What do I do next.

Copy that. On Saturday, April 18, 2026, 'b alex pettit jr' via Society of Amateur Radio

Apr 18

Jason, … b alex pettit jr4

Apr 18

Bulding an own Radio Telescope

OR, use your dish in place of the Photo Umbrella, and build the feed HLine3D/

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Bulding an own Radio Telescope

OR, use your dish in place of the Photo Umbrella, and build the feed HLine3D/

Apr 18

andrew....@googlemail.com

Apr 17

FW: 20 April 2026 @ 19:00 UTC / 20:00 BST. BAA Muon Detection Online Meeting

20 April 2026 @ 19:00 UTC / 20:00 BST. BAA Muon Detection Online Meeting: The next BAA Muon Detection

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FW: 20 April 2026 @ 19:00 UTC / 20:00 BST. BAA Muon Detection Online Meeting

20 April 2026 @ 19:00 UTC / 20:00 BST. BAA Muon Detection Online Meeting: The next BAA Muon Detection

Apr 17

edhar...@gmail.com, … b alex pettit jr5

Apr 17

RE: [SARA] System Equivalent Noise Temp ?

I'd like to thank Everyone for their useful input. The Title may have been a misnomer, but I am

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RE: [SARA] System Equivalent Noise Temp ?

I'd like to thank Everyone for their useful input. The Title may have been a misnomer, but I am

Apr 17

andrew....@googlemail.com

Apr 17

Key documents for making your own Jason Burnfield 1.5m mini hydrogen line radio telescope and using this to successfully take a spectrum on M31 Andromeda Galaxy (and hopefully even the M33 Triangulum Galaxy).

https://www.astronomy.me.uk/key-documents-for-making-your-own-jason-burnfield-1-5m-mini-hydrogen-line

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Key documents for making your own Jason Burnfield 1.5m mini hydrogen line radio telescope and using this to successfully take a spectrum on M31 Andromeda Galaxy (and hopefully even the M33 Triangulum Galaxy).

https://www.astronomy.me.uk/key-documents-for-making-your-own-jason-burnfield-1-5m-mini-hydrogen-line

Apr 17

JERRY TAYLOR, … b alex pettit jr33

Apr 16

HI data interpretation help

I guess, more importantly, is the data stored in a format which can be converted to & plotted as

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HI data interpretation help

I guess, more importantly, is the data stored in a format which can be converted to & plotted as

Apr 16

Stephen Arbogast

Apr 15

Doppler Tracking of Orion at DSES

Very cool! See https://dses.science/wp-content/uploads/Projects/Artemis-II/Doppler-Tracking-of-Orion.

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Doppler Tracking of Orion at DSES

Very cool! See https://dses.science/wp-content/uploads/Projects/Artemis-II/Doppler-Tracking-of-Orion.

Apr 15

Marcus D. Leech, … Robert Brown15

Apr 15

A horrible Flat-Earth book, by a horrible human being

You used a four-letter word..."test". It's almost as offensive as "fact". On

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A horrible Flat-Earth book, by a horrible human being

You used a four-letter word..."test". It's almost as offensive as "fact". On

Apr 15

Eduard Mol, … Dimitry UA3AVR9

Apr 15

New video about methanol maser observations

Nice video, Eduard ... congrats пятница, 10 апреля 2026 г. в 22:14:45 UTC+3, Eduard Mol: Hi all, Just

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New video about methanol maser observations

Nice video, Eduard ... congrats пятница, 10 апреля 2026 г. в 22:14:45 UTC+3, Eduard Mol: Hi all, Just

Apr 15

Jason Burnfield, … Robert Hamers9

Apr 14

5 days worth of drift scans on my 1.54 meter mini dish!

Here's a direct/scaled paste-in of the actual figure in the published paper with my 6 days of

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5 days worth of drift scans on my 1.54 meter mini dish!

Here's a direct/scaled paste-in of the actual figure in the published paper with my 6 days of

Apr 14

Alex P, Jason Burnfield3

Apr 14

"March Winds .. April Showers..." maybe its time for an Umbrella ? ( antenna )

BTW, I did build a 60" version, but as photo umbrellas are not proper parabolas, its performance

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"March Winds .. April Showers..." maybe its time for an Umbrella ? ( antenna )

BTW, I did build a 60" version, but as photo umbrellas are not proper parabolas, its performance

Apr 14

Andrew Thornett

Apr 14

GNU Radio Video from 13/4/2026

Hi All, The video from last night's GNU Radio for Radio Astronomy meeting can be found on the

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GNU Radio Video from 13/4/2026

Hi All, The video from last night's GNU Radio for Radio Astronomy meeting can be found on the

Apr 14

Ayushman Tripathi, … b alex pettit jr55

Apr 13

First Drift Scan from my 2.4m Dish with Airspy Mini and VIRGO

Hi Alex, Yes! :) If it was too easy, then no fun 🙂 Thanks! Sent from my iPhone On 14 Apr 2026, at 01:

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First Drift Scan from my 2.4m Dish with Airspy Mini and VIRGO

Hi Alex, Yes! :) If it was too easy, then no fun 🙂 Thanks! Sent from my iPhone On 14 Apr 2026, at 01:

Apr 13

Jim Brown, b alex pettit jr4

Apr 13

Yes, I calibrate all my spectrographs and SkyPipe. Quite familiar with it. JB On 4/13/2026 13:37,

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Yes, I calibrate all my spectrographs and SkyPipe. Quite familiar with it. JB On 4/13/2026 13:37,

Apr 13

Jason Burnfield, … shinichir...@gmail.com11

Apr 13

4 days of m31 drift scans on my mini dish

Thank you for the information. This is really encouraging! On Monday, April 13, 2026 at 2:32:13 PM

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4 days of m31 drift scans on my mini dish

Thank you for the information. This is really encouraging! On Monday, April 13, 2026 at 2:32:13 PM

Apr 13

Marcus D. Leech

Apr 12

Picking up Orion's ion trail

Anyone on here an avid enough meteor-forward-scatter observer to hear any chatter about possible

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Picking up Orion's ion trail

Anyone on here an avid enough meteor-forward-scatter observer to hear any chatter about possible

Apr 12

Andrew Thornett, … Curt Kinghorn3

Apr 11

I love this! Thanks for sharing! On Sat, Apr 11, 2026 at 11:01 AM 'Andrew Thornett' via

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I love this! Thanks for sharing! On Sat, Apr 11, 2026 at 11:01 AM 'Andrew Thornett' via

Apr 11

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