# Release Announcement: GNU Radio 4.1 **URL:** \ **Category:** GNU Radio\ **Created:** [April 1, 2015, 9:31pm UTC](https://www.ruby-forum.com/t/release-announcement-gnu-radio-4-1/241378 "2015-04-01T21:31:54Z")\ **Posts on this page:** 17\ **Page:** 1
**Author:** ![musicdenotation](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/ea666f/32.png) [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Post date:** [April 1, 2015, 9:31pm UTC](https://www.ruby-forum.com/t/release-announcement-gnu-radio-4-1/241378/1 "2015-04-01T21:31:54Z")
Hey everyone, as you might have heard, a GNU Radio hackfest is going on in sunny California, and one thing we’ve gotten going is the 4.1 release for GNU Radio. As you can tell, this is a major version jump. Here’s a release summary: _Move to .NET_: This is probably the biggest change for now. Because of our continuing troubles with SWIG, we decided to move to a different platform for interoperating between a high-performance language and an easy scripting language, and .NET serves this cause. So, anything previously written in C++ is now in C#, and for the simple stuff (previously Python blocks) we now use [ASP.NET](http://ASP.NET). This is also fantastic as it finally allows graphical development using Visual Basic. This also allowed us to modify the block API. The downside is, all OOT modules will be incompatible with GR4 – maybe gr\_modtool will provide conversion utilities once it has been ported to Delphi. Linux support is currently not available – this is not ideal, but we figured the 3.x series had broken Windows support for a long time, so this simply moves the problem to a different operating system. Unfortunately, we can’t provide liveSDR ISOs anymore, now, because of licensing issues. As soon as mono picks up the slack, we’ll be able to port GNU Radio 4 to Mono and Linux support will be mostly back on track. _Embedded Support_: As a result of the embedded Linux conference the week prior to the hackfest, we realized that this whole ‘embedded’ thing is just a fad and is eating up our development resources. We are thus dropping embedded platform support for now, although we might revisit this when embedded Windows becomes more popular. _GNU Radio Companion:_ To overcome the lack of volunteers developing GRC, we will be integrating our graphical development process into the .NET framework also. As mentioned before, Visual Basic is ideally suited for the development of graphical widgets and we’re anticipating a surge in new graphical widgets from the community. On the community side, there’ll be a couple of changes, too: Some already guessed we’d be dropping the mailing list as a communications platform when we announced our endorsement of Stack Overflow. The mailing list will go down as soon as we have a new web-based forum available, where users can post images inline as well as use Emojis. To avoid excessive trolling, users will either need a Facebook or Paypal account to log in. Thanks everyone for being part of this community and keeping it going! Of course, all the new stuff can be found on the 4.1 release website: [http://gnuradio.org/redmine/projects/gnuradio/wiki/Release4](http://gnuradio.org/redmine/projects/gnuradio/wiki/Release4) Cheers, Martin ---
**Author:** ![pytlik](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/779978/32.png) [@pytlik](https://www.ruby-forum.com/u/pytlik)\ **Post date:** [April 1, 2015, 9:38pm UTC](https://www.ruby-forum.com/t/release-announcement-gnu-radio-4-1/241378/2 "2015-04-01T21:38:06Z")
I totally agree On 01/04/15 21:34, Anderson, Douglas J. wrote: > as you might have heard, a GNU Radio hackfest is going on in sunny > (previously Python blocks) we now use [ASP.NET](http://ASP.NET). This is also fantastic as > licensing issues. As soon as mono picks up the slack, we’ll be able to > .NET framework also. As mentioned before, Visual Basic is ideally suited > > [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) > [Discuss-gnuradio Info Page](https://lists.gnu.org/mailman/listinfo/discuss-gnuradio) > > * * * > > Discuss-gnuradio mailing list > [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) > [Discuss-gnuradio Info Page](https://lists.gnu.org/mailman/listinfo/discuss-gnuradio) – * * * Universitt Bern Institut fr Informatik und angewandte Mathematik Communication and Distributed Systems Research Group Marcel Stolz, BSc Master Student Neubrckstrasse 10 CH-3012 Bern [mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) > **[Communication and Distributed Systems](https://www.cds.unibe.ch/)** ---
**Author:** ![pytlik](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/779978/32.png) [@pytlik](https://www.ruby-forum.com/u/pytlik)\ **Post date:** [April 1, 2015, 9:36pm UTC](https://www.ruby-forum.com/t/release-announcement-gnu-radio-4-1/241378/3 "2015-04-01T21:36:20Z")
I just threw up in my mouth a little… * * * From: discuss-gnuradio-bounces+danderson=removed\_email\_address@domain.invalid [discuss-gnuradio-bounces+danderson=removed\_email\_address@domain.invalid] on behalf of Martin B. [removed\_email\_address@domain.invalid] Sent: Wednesday, April 01, 2015 1:30 PM To: removed\_email\_address@domain.invalid Subject: [Discuss-gnuradio] Release Announcement: GNU Radio 4.1 Hey everyone, as you might have heard, a GNU Radio hackfest is going on in sunny California, and one thing we’ve gotten going is the 4.1 release for GNU Radio. As you can tell, this is a major version jump. Here’s a release summary: _Move to .NET_: This is probably the biggest change for now. Because of our continuing troubles with SWIG, we decided to move to a different platform for interoperating between a high-performance language and an easy scripting language, and .NET serves this cause. So, anything previously written in C++ is now in C#, and for the simple stuff (previously Python blocks) we now use [ASP.NET](http://ASP.NET). This is also fantastic as it finally allows graphical development using Visual Basic. This also allowed us to modify the block API. The downside is, all OOT modules will be incompatible with GR4 – maybe gr\_modtool will provide conversion utilities once it has been ported to Delphi. Linux support is currently not available – this is not ideal, but we figured the 3.x series had broken Windows support for a long time, so this simply moves the problem to a different operating system. Unfortunately, we can’t provide liveSDR ISOs anymore, now, because of licensing issues. As soon as mono picks up the slack, we’ll be able to port GNU Radio 4 to Mono and Linux support will be mostly back on track. _Embedded Support_: As a result of the embedded Linux conference the week prior to the hackfest, we realized that this whole ‘embedded’ thing is just a fad and is eating up our development resources. We are thus dropping embedded platform support for now, although we might revisit this when embedded Windows becomes more popular. _GNU Radio Companion:_ To overcome the lack of volunteers developing GRC, we will be integrating our graphical development process into the .NET framework also. As mentioned before, Visual Basic is ideally suited for the development of graphical widgets and we’re anticipating a surge in new graphical widgets from the community. On the community side, there’ll be a couple of changes, too: Some already guessed we’d be dropping the mailing list as a communications platform when we announced our endorsement of Stack Overflow. The mailing list will go down as soon as we have a new web-based forum available, where users can post images inline as well as use Emojis. To avoid excessive trolling, users will either need a Facebook or Paypal account to log in. Thanks everyone for being part of this community and keeping it going! Of course, all the new stuff can be found on the 4.1 release website: [http://gnuradio.org/redmine/projects/gnuradio/wiki/Release4](http://gnuradio.org/redmine/projects/gnuradio/wiki/Release4) Cheers, Martin * * * Discuss-gnuradio mailing list removed\_email\_address@domain.invalid [https://lists.gnu.org/mailman/listinfo/discuss-gnuradio](https://lists.gnu.org/mailman/listinfo/discuss-gnuradio) ---
**Author:** ![pytlik](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/779978/32.png) [@pytlik](https://www.ruby-forum.com/u/pytlik)\ **Post date:** [April 1, 2015, 9:41pm UTC](https://www.ruby-forum.com/t/release-announcement-gnu-radio-4-1/241378/4 "2015-04-01T21:41:41Z")
On 04/01/2015 03:30 PM, Martin B. wrote: > different platform for interoperating between a high-performance > Linux support is currently not available – this is not ideal, but we > revisit this when embedded Windows becomes more popular. > mailing list will go down as soon as we have a new web-based forum > Martin You know, there’s a tradition about April 1, that jokes played after 13:00 local cause bad kharma to flow to the joker. Just, you know, sayin’. ---
**Author:** ![pytlik](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/779978/32.png) [@pytlik](https://www.ruby-forum.com/u/pytlik)\ **Post date:** [April 1, 2015, 9:44pm UTC](https://www.ruby-forum.com/t/release-announcement-gnu-radio-4-1/241378/5 "2015-04-01T21:44:24Z")
On 01.04.2015 12:40, Marcus D. Leech wrote: > You know, there’s a tradition about April 1, that jokes played after > 13:00 local cause bad kharma to flow to the joker. Just, you know, > sayin’. You underestimate my West-ness of timezone. M ---
**Author:** ![pytlik](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/779978/32.png) [@pytlik](https://www.ruby-forum.com/u/pytlik)\ **Post date:** [April 1, 2015, 9:47pm UTC](https://www.ruby-forum.com/t/release-announcement-gnu-radio-4-1/241378/6 "2015-04-01T21:47:57Z")
On Wed, Apr 1, 2015 at 12:30 PM, Martin B. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > Unfortunately, we can’t provide liveSDR ISOs anymore, now, because of > licensing issues. Rest assured we are almost ready to announce our GNU Radio Live SDR Floppy Disk Environment and parallel port license dongle. ---
**Author:** ![pytlik](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/779978/32.png) [@pytlik](https://www.ruby-forum.com/u/pytlik)\ **Post date:** [April 1, 2015, 9:49pm UTC](https://www.ruby-forum.com/t/release-announcement-gnu-radio-4-1/241378/7 "2015-04-01T21:49:44Z")
Hi Martin, thanks for wrapping up the news! Just to add a bit from the developers/infrastructural side of things: From the infrastructure side of things, we’ve agreed to migrate to our own SharePoint server, and ditch git. It had terrible Perforce support, and isn’t really suited for VisualStudio projects. Also, it was really more complex that it should have been. Obviously, that breaks pybombs and build-gnuradio, but we should soon be seeing GR on the Windows 8/10 App Store. I’ve spent the profits from last GRCON on the StackOverflow sponsoring and Facebook adverising. You will be seeing the new GR4 logo next to questions tagged with gnu-radio and software-defined-radio starting next monday, and people with related interests (hams, .Net devs, or GR-connected FB account) will see ads in their FB timeline soon, too; the idea is that the revenue that we can generate by placing successively more ads on [gnuradio.org](http://gnuradio.org) will quickly cover our FB expenses, and will also give the project a touch of professionalism that basically made all but academic lunatics stay away from GR. Enjoy the ride, Marcus ---
**Author:** ![pytlik](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/779978/32.png) [@pytlik](https://www.ruby-forum.com/u/pytlik)\ **Post date:** [April 1, 2015, 9:50pm UTC](https://www.ruby-forum.com/t/release-announcement-gnu-radio-4-1/241378/8 "2015-04-01T21:50:38Z")
On 04/01/2015 03:43 PM, Martin B. wrote: > On 01.04.2015 12:40, Marcus D. Leech wrote: > > > You know, there’s a tradition about April 1, that jokes played after > > 13:00 local cause bad kharma to flow to the joker. Just, you know, > > sayin’. > > You underestimate my West-ness of timezone. > > M The Internet screwed up everything… 🙂 ---
**Author:** ![pytlik](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/779978/32.png) [@pytlik](https://www.ruby-forum.com/u/pytlik)\ **Post date:** [April 1, 2015, 9:55pm UTC](https://www.ruby-forum.com/t/release-announcement-gnu-radio-4-1/241378/9 "2015-04-01T21:55:05Z")
Please tell me the SharePoint server has no backups, and is running off a 56K modem running on GNURadio in somebody’s grandmother’s basement… Michael On Wed, Apr 1, 2015 at 12:48 PM, Marcus Müller [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) ---
**Author:** ![pytlik](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/779978/32.png) [@pytlik](https://www.ruby-forum.com/u/pytlik)\ **Post date:** [April 1, 2015, 9:57pm UTC](https://www.ruby-forum.com/t/release-announcement-gnu-radio-4-1/241378/10 "2015-04-01T21:57:46Z")
In the interest of saving the GR support team costly web hosting fees, may I send a self-addressed package with my blank 3.5" floppies to get the release? How many blank floppies should I send? I think I can get them in bulk on eBay. I’m in no hurry, so return by pre-paid surface mail is fine for me (it will take me time to convert my C++ GR blocks to C#). - Tim ---
**Author:** ![pytlik](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/779978/32.png) [@pytlik](https://www.ruby-forum.com/u/pytlik)\ **Post date:** [April 1, 2015, 9:46pm UTC](https://www.ruby-forum.com/t/release-announcement-gnu-radio-4-1/241378/11 "2015-04-01T21:46:10Z")
It’s just not fair to keep reminding me that today’s 1 APR. It’s been too busy to sort out the cruft from the rest of it all. On Wed, Apr 1, 2015 at 2:40 PM, Marcus D. Leech [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > _Move to .NET_: This is probably the biggest change for now. Because of > > > > embedded platform support for now, although we might revisit this when > > we announced our endorsement of Stack Overflow. The mailing list will go > > Martin > > Discuss-gnuradio mailing list > > [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) > > [Discuss-gnuradio Info Page](https://lists.gnu.org/mailman/listinfo/discuss-gnuradio) – Gerry Creager NSSL/CIMMS 405.325.6371 ++++++++++++++++++++++ “Big whorls have little whorls, That feed on their velocity; And little whorls have lesser whorls, And so on to viscosity.” Lewis Fry Richardson (1881-1953) ---
**Author:** ![pytlik](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/779978/32.png) [@pytlik](https://www.ruby-forum.com/u/pytlik)\ **Post date:** [April 1, 2015, 10:03pm UTC](https://www.ruby-forum.com/t/release-announcement-gnu-radio-4-1/241378/12 "2015-04-01T22:03:07Z")
This was a good April fools post, mainly because I forgot it was April 1st and believed it. Thank you for getting the juices flowing! Rich On Wed, Apr 1, 2015 at 12:55 PM, Monahan-Mitchell, Tim \< ---
**Author:** ![pytlik](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/779978/32.png) [@pytlik](https://www.ruby-forum.com/u/pytlik)\ **Post date:** [April 1, 2015, 10:08pm UTC](https://www.ruby-forum.com/t/release-announcement-gnu-radio-4-1/241378/13 "2015-04-01T22:08:28Z")
I liked the one with porting to .Net especially that the previous day I got a presentation on a conference with how open source is .Net and how open MS is now 🙂 Bogdan ``` On Wednesday, April 1, 2015 10:56 PM, "Monahan-Mitchell, Tim" ``` [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: In the interest of saving the GR support team costly web hosting fees, may I send a self-addressed package with my blank 3.5" floppies to get the release? How many blank floppies should I send? I think I can get them in bulk on eBay. I’m in no hurry, so return by pre-paid surface mail is fine for me (it will take me time to convert my C++ GR blocks to C#). - Tim ---
**Author:** ![pytlik](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/779978/32.png) [@pytlik](https://www.ruby-forum.com/u/pytlik)\ **Post date:** [April 1, 2015, 10:18pm UTC](https://www.ruby-forum.com/t/release-announcement-gnu-radio-4-1/241378/14 "2015-04-01T22:18:16Z")
My blood pressure spiked for the first sentence and a half! (then I remembered the date) @(^.^)@ Ed ---
**Author:** ![pytlik](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/779978/32.png) [@pytlik](https://www.ruby-forum.com/u/pytlik)\ **Post date:** [April 1, 2015, 11:14pm UTC](https://www.ruby-forum.com/t/release-announcement-gnu-radio-4-1/241378/15 "2015-04-01T23:14:17Z")
On 01.04.2015 13:15, Ed Criscuolo wrote: > My blood pressure spiked for the first sentence and a half! (then I > remembered the date) I was assuming the version number would be a clue, too 🙂 M ---
**Author:** ![pytlik](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/779978/32.png) [@pytlik](https://www.ruby-forum.com/u/pytlik)\ **Post date:** [April 1, 2015, 10:04pm UTC](https://www.ruby-forum.com/t/release-announcement-gnu-radio-4-1/241378/16 "2015-04-01T22:04:01Z")
On 04/01/2015 03:55 PM, Monahan-Mitchell, Tim wrote: > In the interest of saving the GR support team costly web hosting fees, may I > send a self-addressed package with my blank 3.5" floppies to get the release? > How many blank floppies should I send? I think I can get them in bulk on eBay. > I’m in no hurry, so return by pre-paid surface mail is fine for me (it will > take me time to convert my C++ GR blocks to C#). > > - Tim > > * * * > > Discuss-gnuradio mailing list > [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) > [Discuss-gnuradio Info Page](https://lists.gnu.org/mailman/listinfo/discuss-gnuradio) > This is probably an opportune time to announce my fork of Gnu Radio that > uses Swift instead of C++. I got my teenage son to do the re-writes, > since > he’s learning Swift at school. Creamy goodness. ---
**Author:** ![pytlik](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/779978/32.png) [@pytlik](https://www.ruby-forum.com/u/pytlik)\ **Post date:** [April 1, 2015, 11:29pm UTC](https://www.ruby-forum.com/t/release-announcement-gnu-radio-4-1/241378/17 "2015-04-01T23:29:18Z")
“This also allowed us to modify the block API. The downside is, all OOT modules will be incompatible with GR4” I have to ask for real - is this part of the April fools joke, or is it true? 🙂