Hi there I have a Airspy HF+ online since a couple of months . The Servers is to be found in the adress: sdr://spyserver.thulesius.se:5555/ Antenna : 30 loop QTH : JO89UL 30 km north of Stockholm Plea

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Your server is working well today, thanks for sharing. Michael D Tuolumne California

#spyserver #airspyhfplus #radioastronomy

Yes, the visible signal is certainly generated by interstellar material belonging to our galaxy.

#1420mhz #21cm #radioastronomy

I tried receiving the hydrogen line in the direction of M31 but I can't solve the signal, evidently the s / n ratio is still low. The first image in the frequency domain, the second in the speed domai

#1420mhz #21cm #radioastronomy

You are definitely receiving Hydrogen line emissions from within this galaxy. Since M31 is moving relative to us I would think you would need to look about 3 MHz higher or lower to see Hydrogen line e

#1420mhz #21cm #radioastronomy

That signal will be somewhere around 1422.5MHz--right off the edge of your chart.

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The aggregate M31 signature is at a redshift of roughly -500km/sec, or centered at about 1422.77MHz -- which is off your chart.

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hi guys, in this my first message I would like to revive this topic to find out how many people are interested in radio astronomy. I am an Italian radio amateur who is dedicated to finding practical s

#21cm #1420mhz #radioastronomy

There are actually a fair number of us doing RA with the AirSpy. That SDR is the center of our receiver at the Little Thompson Observatory in Berthoud, Colorado, USA (starkids.org). I'd encourage you

#21cm #1420mhz #radioastronomy

Hi Dave, I am also part of an astronomical observatory, Tavolaia astronomical observatory. http://www.cielisutavolaia.com/ Recently we have built a B0329 + 54 pulsar reception system, the data is publ

#21cm #1420mhz #radioastronomy

I would love to see the Astrospy program have a feature to periodically log data to a file with a a timestamp. It would be such an obvious feature to add. Dan

#21cm #1420mhz #radioastronomy

I have the Airspy Mini and I have built a horn antenna, I'm using 2 LNA4ALLs and a 1420-1470 MHz bandpass filter in between them. I think I have picked up the hydrogen emission signal. I would like to

#1420mhz #21cm #radioastronomy

I'm very confused by your bandwidth comments here. I don't know much about SDR#, but if it shows a couple of MHz around the notional line frequency of 1420.40575MHz, and allows deep integration, then

#1420mhz #21cm #radioastronomy

1) What is the aperture of your horn? 2) How much gain do you have after the two LNA4ALL preamps? 3) What is the loss of your BPF for 1420? 4) What is you detection bandwidth? 5) What is the loss of y

#1420mhz #21cm #radioastronomy

That hump is likely the hydrogen line signal. What size is your horn antenna? NRAO has a fairly full collection of tutorials on basic radio astronomy, including discussions of integration time. Also,

#1420mhz #21cm #radioastronomy

Of course. (Some things are small enough you can sidestep some of the transmission line aspects - for example audio in 10' cables or household power wiring.) An ability to visualize the fields involve

#radioastronomy #bestpractice

Dear Developers Long ago we requested the feature for data logging out of AstroSpy and we received the answer, that all the development power was focused on the release of the HF+. Because the HF+ is

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Dear Developers Long ago we requested the feature for data logging out of AstroSpy and we received the answer, that all the development power was focused on the release of the HF+. Because the HF+ is

#radioastronomy

I too have requested the same feature for Astrospy. Has I understand it, it would be an easily added feature. Dan

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Thanks, Joanne!! You nailed it ! ! ! ! When it comes to RF, there is NO GROUND. However, there is a 'return' for RF fields. I often point out that the Crab Nebula doesn't need a 'ground' to fill the k

#radioastronomy #bestpractice