Date   
Official Amateur Radio Astronomy/RF Space Science/SETI Resource List, and Station Pics #waterhole #seti #RTL #radioastronomy #21cm

Robert Gast
 

Let's face it Amateur Radio Astronomy (ARA from hear on out) isn't the most popular hobby, and is rare among hams even. Secondly I would venture to guess that most people out there beginning experiments in ARA are using simple systems based on hacked Sat Finders or products like the RAL10KIT from Radio Astro Lab, to me these are totally clumsy and inferior solutions that belong back in the 20th century! There isn't a whole lot of people out there using SDR for ARA, although that is changing and SDR will ultimately be the main tool for ARA as more and more people get comfortable with the new paradigm shift in RF thinking.  

I figure it would be nice to start a topic specifically as a place where we can all share are ARA resources like software, web sites, pdf files etc. I have quite a modest amount of info covering lots of different topics that I have scrounged up while doing research on setting up an ARA station. I am hoping that others may have quality resources they have discovered that I have not and and will post them here too. While your at it why not post some pictures of your set up and write a little bit about what your doing with ARA.

So I figured I would post all the software I know of related to ARA, especially ARA using SDR along with I consider some of the best ARA web sites in my book marks. I also have a lot of cool radio astronomy based pdf files on all sorts of topics about everything from using helicals instead of dishes for the h-line, to a comparison of an SDR and GNU Radio Set up VS a traditional super pricey radiometer(The USRP wins, and since the AirSpy has even better Rx than USRP....). In the near future I plan to set up a blog about Electronics and ARA, until then I will just upload the PDF files to my main website and post the link here as long as there is sufficient interest in any of this ARA stuff!

Ok lets get to the list already!

Software Resources for, or that work well for ARA and SDR/DSP.

#1 SDR#/AstroSpy/SpectrumSpy 
I don't think this needs any description, but if you did not know AstroSpy has a config file where the bandwidth among other things can be tweaked.

#2 Spectrum Lab 
Windows DSP software like SDR# it is usually used with sound card input but can be adapted to SDRs like AirSpy/RTL via audio piping or directly with a little work (when set up directly for SDR SpecLab isn't limited by audio cards bandwidth). Spectrum is much more complicated than a general SDR program like SDR#/GQRX and allows features like custom band pass filtering etc...

#3 GNU Radio Windows Binary
Everyone knows what GNU Radio is, now there is an easy to use windows installer in case you weren't aware. On Linux just use your package manager to download it obviously.

#4 Pothos SDR
Framework by Josh Blum, like GNU Radio. It also supports GNU Radio code with in it. Pothos is based on soapy SDR which is a cross platform SDR agnostic development environment. Pothos is suppose to be more intuitive than GNU Radio, and there are people jumping on the bandwagon for example there is a team using dishes to track NASAs Stereo A and B space probes for solar research, they are using Pothos as there framework of choice to actually demodulate and decode the probes signals (not just track the Doppler of there carrier like most DSN). As someone who uses Linux as there main OS with a WinVM always running for SDR# SpecLab etc etc, I love the idea of soapy and pothos layer of total hardware and OS abstraction.

For those unfamiliar with GNU Radio Companion, any script/flow chart can easily be opened and it's source block can be changed back and forth between RTL and AirSpy along with the receiver sample rate

#5 CCERA RadioMeter
GNU Radio program to use your SDR as a total power radiometer

#6 CCERA Pulsar Display
GNU Radio program to monitor pulsars

#7 Simple RA
Simple Integrated Radio Astronomy receiver in GNU Radio

#8 RTL SDR Software Tools
Windows command line, Link goes to a .doc file explaining usage of the command line tools, links to software at bottom of document. these tools are for collecting FFT bins and averaging them over time

#9 H-Line Tools for Windows and Linux
Link goes to a .doc file explaining usage of the command line tools, links to software at bottom of document.

#10 RTL SDR Pulsar analysis tools
Windows tools, c source code included

#11 Radio Spectrogram with RTL Bridge
Basically a water fall display over an elongated time period

#12 Radio Sky Software
All software from Radio sky publishing, check it out if you haven't seen it. RadioEyes is an invaluable resource for finding radio sources in space and planning your observation.

Well thats it for the software, here are some of the most usefull or neatest ARA web links i have found

Papers and Presentations on RA by David Morgan
Society of Amateur Radio Astronomers
MIT HayStack Radio Astronomy Tutorial
MIT HayStack Radio Observatory Information
RadioSky Articles
Y1PWE RA Site
11Ghz Solar Interferometer with GRC Files
BAA Ragazine
21cm Hydrogen Line Astronomy at International Space Institute
Canadian Center for Experimental Radio Astronomy
SETI League

And finally a little bit about my set up, which is still a work in progress. Right now I have most of what I need ready except antennas!!! I have a 3 meter (10ft) dish, that I hope to start setting up after x-mas. It was given to me with a polar mount and linear actuator, my plan is to buy a cheap stick welder so I can modify the mount. I have already talked to the local place that scraps metal and they told me I can take anything I need for 3 cents a pound, so I am all set on the structural material. Im planning on making the azimuth rotor out of a large enough motor with a high resolution encoder on it and an industrial worm gear of ebay, that can be sourced pretty cheap. If anyone has an idea of what kind of motor I need to rotate a 3 meter dish please let me know, I dont want to buy something under powered. I have already started working on an L-Band horn feed, and have thermo-electric coolers to mount on the low noise amps to keep there gain stable.

I call the whole project my "Citizen Science Center", not only do I intend on monitoring 1.4ghz but throwing up some 21mhz dipoles to monitor Jupiter, am active VLF antenna to monitor solar disturbances and a 20 wrap helix I made to receive solar imaging from goes satellites. Lastly I want to throw in a seismic sensor, I live in southern California where we have a lot of earth quakes and I have done some reading about VLF disturbances and there correlation with earthquakes I want to study a little more.

Pretty Plain Electronics Work Area


The "Citizen Science Control Center", HP 6 digit Meter, HP 100microV Scope,
USB Scope and AWG, Radios, Power Supplies, Voltage Standard, DIY
Ovenized GPS locked 3 channel VFO, HF UpConverters, Microwave DownConverters,
RF Synth, SDRs, Some Robot stuff that needs to find a new home, and finally computer


Re: USING AIRSPY FOR THE H1 LINE - RADIO ASTRONOMY

Robert Gast
 

Ok I made a new topic here https://airspy.groups.io/g/main/topic/official_amateur_radio/7659457?p=,,,20,0,0,0::recentpostdate%2Fsticky,,,20,2,0,7659457 so check it out and add your input, I wanted to write something more general for any amateurs astronomers on the list. I totally forgot about LinRad as Lief mentioned but you may want to look in to it too, its great software for weak signals!

My topic has a list of all RA software I know about for SDRs specifically check out items #5,7,8,9, I know some of these programs are binarys written for RTL-SDRs but as I said I think an RTL should work just fine if you really like one of those software packages, the ones that arent just RTL based are GNU Radio flow charts, you can easily edit them and set there source up for an airspy along with changing the sampling rate to one compatible with the r2 or mini.

Any planned AirSpy support for Android devices?

Robert Gast
 

I am just curious if there is any plans to support AirSpy on mobile platforms? I think having a handheld SDR is super useful for certain tasks like trouble shooting EMI, finding signal sources, mobile scanner, on and on. I know there is an RTL Driver and SDR Touch for Android. There is also RF Analyzer which supports RTL and HackRF. Im not sure if it as easy writing a driver that will interface with RF Analyzer or if there is more to it.

I also remember seeing a tweet which I am pretty sure was from the official airspy twitter which showed something that looked like SDR# running on a smart watch. Just curious if this is even on the list of things in the airspy/sdr# universe?

Re: Any planned AirSpy support for Android devices?

David J Taylor
 

I am just curious if there is any plans to support AirSpy on mobile platforms? I think having a handheld SDR is super useful for certain tasks like trouble shooting EMI, finding signal sources, mobile scanner, on and on. I know there is an RTL Driver and SDR Touch for Android. There is also RF Analyzer which supports RTL and HackRF. Im not sure if it as easy writing a driver that will interface with RF Analyzer or if there is more to it.

I also remember seeing a tweet which I am pretty sure was from the official airspy twitter which showed something that looked like SDR# running on a smart watch. Just curious if this is even on the list of things in the airspy/sdr# universe?
===========================================

Robert,

I believe the watch demo was server/client.

https://www.rtl-sdr.com/sdr-on-an-android-wristwatch-with-airspy-hf-and-spyserver/

You can also use a compact Windows tablet for the Airspy and SDR#.

http://blog.londonshortwave.com/search/label/Portable%20SDR

Cheers,
David
--
SatSignal Software - Quality software written to your requirements
Web: http://www.satsignal.eu
Email: david-taylor@...
Twitter: @gm8arv

Re: Christmas??

John Talbot
 

Bull. Thats mine.

On Dec 17, 2017 12:50, "Mark Volstad" <mvolstad@...> wrote:
The second unit from the right in the upper row is mine!

Re: Airspy HF+ pre-orders are open!

Curt Faulk
 

I can be patient and wait many more weeks for mine. I'm sure they're doing the best they can.  So what if they're a little late?  It's not like the this is the only SDR radio over got, after all.

On Dec 18, 2017 17:22, "Brett G. Russo" <brusso@...> wrote:
Hey guys is this a technical forum or customer service forum. I have not yet ordered, but all this angst should be taken off line to email! May the biggest problem in your lives be the late delivery of an in expensive sdr radio! 

I’d just stop moaning and wait for it to show up!

Sent from my iPhone

On Dec 18, 2017, at 2:46 PM, John <contact@...> wrote:

'Mine still shows as processing............................
Thinking of cancelling it, I am aware of pre-orders, but this seems to be taking the biscuit.
Overall so far not happy with the service I am receiving (just like the item)'


Like many others, I don't mind waiting if the gadget is as good as it seems.
However, it is becoming increasingly hard to resist the notion that those of us who rushed to put in pre-orders on 11th, 12th, and 13th Nov probably, and unwittingly, went a long way to crowd-funding the first proper production run.
So I ask myself:
What would I do at this point if I were pulling the strings - aware that I had a PR bubo rapidly filling with pus and distending dangerously as the mission creeps?
(And bulk of the pre-ordered units weren't actually going to be posted tomorrow or the next day - just in time to take their chances with the Christmas/post-Christmas mail vortex.)
I think I know (and it wouldn't be more teaser photos (with no EXIF data) of small numbers of units), but it would be a distracting yuletide parlour game to hear what others suggest (and predict).

Season's blessings to all,

John from Scotland.
(Bobbing about distractedly in his vat of warm Figgy Pudding)
sdr://tumbril.asuscomm.com:5555

Re: Airspy HF+ pre-orders are open!

SkipF, NT1G
 

Wah, wah, wah!

Re: Airspy HF+ pre-orders are open!

Bazz <barry.whitehead@...>
 

Just like being in the playground, shame the admins can't stop this.

Time to unsubscribe

On 19 December 2017 at 12:15, SkipF, NT1G <skip.flem@...> wrote:
Wah, wah, wah!


Re: Airspy HF+ pre-orders are open!

prog
 

On Tue, Dec 19, 2017 at 04:31 am, Bazz wrote:
Just like being in the playground, shame the admins can't stop this.
 
Time to unsubscribe
Note that this is a public forum and messages can only be moderated aposteriori.

Re: Airspy HF+ pre-orders are open!

Jonathan Endersby
 

Bazz wrote:
> Just like being in the playground, shame the admins can't stop this.
> Time to unsubscribe

I'm going to guess that the admins don't want to be seen as censoring the mailing list with people who are complaining about anything... censorship unfortunately never plays well with customer service. Blame the noise source, not the filter.

When I buy a pre-order item, especially something as niche as SDR kit, I assume that delays are possible. I trust Airspy implicitly. I know I will get my HF+ and it will be awesome. 

Ciao, 
J.


Re: Airspy HF+ pre-orders are open!

Chuck Conner
 

Just got my shipment email from Itead!   Super awesome!

Chuck Conner

On Tue, Dec 19, 2017 at 7:01 AM, Jonathan Endersby <arbitraryuser@...> wrote:
Bazz wrote:
> Just like being in the playground, shame the admins can't stop this.
> Time to unsubscribe

I'm going to guess that the admins don't want to be seen as censoring the mailing list with people who are complaining about anything... censorship unfortunately never plays well with customer service. Blame the noise source, not the filter.

When I buy a pre-order item, especially something as niche as SDR kit, I assume that delays are possible. I trust Airspy implicitly. I know I will get my HF+ and it will be awesome. 

Ciao, 
J.



My HF+ production unit just shipped #airspyhfplus

Luis Colunga
 

Hi, 

I just received an email from Itead letting me know that my unit has shipped.

Be happy! 

Re: My HF+ production unit just shipped #airspyhfplus

WA8RVD
 

My order status has gone from "processing" to "complete"

Re: My HF+ production unit just shipped #airspyhfplus

Tudor Vedeanu
 

It looks like mine has been shipped too! Now let's see how fast DHL is.

-Tudor

Re: My HF+ production unit just shipped #airspyhfplus

ww6rb
 

WoooHoo! Same here... and my order number was at least 200 higher than Joanne's... so they must really be cranking!



via cell


-------- Original message --------
From: Tudor Vedeanu <tmvedeanu@...>
Date: 12/19/17 8:44 AM (GMT-08:00)
To: main@airspy.groups.io
Subject: Re: [airspy] My HF+ production unit just shipped #airspyhfplus

It looks like mine has been shipped too! Now let's see how fast DHL is.

-Tudor

Re: My HF+ production unit just shipped #airspyhfplus

Jon Fear
 

So far very few seemed to have shipped. Order 100129663 is still processing...

Ho Hum...

Enough words have already been said. My opinion will only feed the numerous trolls on here.

Re: My HF+ production unit just shipped #airspyhfplus

atouk
 

Pre-order sales.  Notices of shipping are going out.

And still some people won't be happy unless they get a hand delivered unit in a personalized engraved presentation case.


Re: Airspy HF+ pre-orders are open!

Greg Whynott
 

Amazing the amount of people who don't get or understand "pre order" and the lay of land.  It's not built yet,  there will likely be delay,  it's a small run.  I think they just want to be seen complaining.   E-ragers.  :)

On Dec 19, 2017, at 11:27, Chuck Conner <cconnerinfield@...> wrote:

Just got my shipment email from Itead!   Super awesome!

Chuck Conner

On Tue, Dec 19, 2017 at 7:01 AM, Jonathan Endersby <arbitraryuser@...> wrote:
Bazz wrote:
> Just like being in the playground, shame the admins can't stop this.
> Time to unsubscribe

I'm going to guess that the admins don't want to be seen as censoring the mailing list with people who are complaining about anything... censorship unfortunately never plays well with customer service. Blame the noise source, not the filter.

When I buy a pre-order item, especially something as niche as SDR kit, I assume that delays are possible. I trust Airspy implicitly. I know I will get my HF+ and it will be awesome. 

Ciao, 
J.



Airspy mini very hot?

Andrew Sutcliffe
 

I have had my unit running for longer periods lately and it gets really hot - almost too hot to touch.

Firstly is this normal?

Secondly, if yes above, what is causing this heat? An overclocked chip? Linear regulator? If that latter, could I swap for a 662k 3.3v 500mA switching regulator? I have used these on a lot of things lately and they run nice and cool and stable.

Any other thoughts or ideas I might need to know or could try?

Thanks. :)

Re: My HF+ production unit just shipped #airspyhfplus

Ruben Navarro Huedo (EA5BZ)
 

Order 100129632 still processing