# NFM TX with branch "next"? **URL:** \ **Category:** GNU Radio\ **Created:** [May 24, 2013, 9:23am UTC](https://www.ruby-forum.com/t/nfm-tx-with-branch-next/234994 "2013-05-24T09:23:09Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![addis\_a](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/c4cdca/32.png) [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Post date:** [May 24, 2013, 9:23am UTC](https://www.ruby-forum.com/t/nfm-tx-with-branch-next/234994/1 "2013-05-24T09:23:09Z")
Hi, A few days ago I tested the latest “next” branch, now it builds on a 32 bit Kubuntu 12.04 without any problems - but it seems to me that still the good old analog stuff is not completely supported, or am I wrong? Just needed a dual tone in NFM, so I put together two signal source blocks, an add block, NFM TX and the USRP, and I still get an error message like (not literally, just from my memory) “no channel model available”. Am I doing smth. wrong? The very same GRC file loaded into “master” branch just does what it should. Is anybody from the list visiting SIGINT 2013 in Cologne / Kln? Ralph. – Ralph A. Schmid Mondstr. 10 90762 Frth +49-171-3631223 removed\_email\_address@domain.invalid [http://www.bclog.de/](http://www.bclog.de/) ---
**Author:** ![Ralph\_ASSchmidS\_dk](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/91b2a8/32.png) [@Ralph\_ASSchmidS\_dk](https://www.ruby-forum.com/u/Ralph_ASSchmidS_dk)\ **Post date:** [May 24, 2013, 1:36pm UTC](https://www.ruby-forum.com/t/nfm-tx-with-branch-next/234994/2 "2013-05-24T13:36:05Z")
On Fri, May 24, 2013 at 12:22 AM, Ralph A. Schmid, dk5ras [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)wrote: > A few days ago I tested the latest “next” branch, now it builds on a 32 bit > Kubuntu 12.04 without any problems - but it seems to me that still the good > old analog stuff is not completely supported, or am I wrong? Just needed a > dual tone in NFM, so I put together two signal source blocks, an add block, > NFM TX and the USRP, and I still get an error message like (not literally, > just from my memory) “no channel model available”. Am I doing smth. wrong? > The very same GRC file loaded into “master” branch just does what it > should. There was a recent bug on the next branch related to gr-uhd, could you please retry with the very latest? ---
**Author:** ![Ralph\_ASSchmidS\_dk](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/91b2a8/32.png) [@Ralph\_ASSchmidS\_dk](https://www.ruby-forum.com/u/Ralph_ASSchmidS_dk)\ **Post date:** [May 24, 2013, 1:44pm UTC](https://www.ruby-forum.com/t/nfm-tx-with-branch-next/234994/3 "2013-05-24T13:44:51Z")
OK, I will give it another try, but I wonder if it may have to do with grextras not being compatible with the new API? There are two NFM TX blocks available in my installation, both do not work under next, but with different errors. After the next try I will give exact copies of the messages… Ralph. From: Johnathan C. [[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)] Sent: Friday, May 24, 2013 1:34 PM To: Ralph A. Schmid, dk5ras Cc: removed\_email\_address@domain.invalid Subject: Re: [Discuss-gnuradio] NFM TX with branch “next”? On Fri, May 24, 2013 at 12:22 AM, Ralph A. Schmid, dk5ras [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: A few days ago I tested the latest “next” branch, now it builds on a 32 bit Kubuntu 12.04 without any problems - but it seems to me that still the good old analog stuff is not completely supported, or am I wrong? Just needed a dual tone in NFM, so I put together two signal source blocks, an add block, NFM TX and the USRP, and I still get an error message like (not literally, just from my memory) “no channel model available”. Am I doing smth. wrong? The very same GRC file loaded into “master” branch just does what it should. There was a recent bug on the next branch related to gr-uhd, could you please retry with the very latest? ---
**Author:** ![Ralph\_ASSchmidS\_dk](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/91b2a8/32.png) [@Ralph\_ASSchmidS\_dk](https://www.ruby-forum.com/u/Ralph_ASSchmidS_dk)\ **Post date:** [May 24, 2013, 2:18pm UTC](https://www.ruby-forum.com/t/nfm-tx-with-branch-next/234994/4 "2013-05-24T14:18:10Z")
On Fri, May 24, 2013 at 4:39 AM, Ralph A. Schmid, dk5ras [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)wrote: > OK, I will give it another try, but I wonder if it may have to do with > grextras not being compatible with the new API? There are two NFM TX blocks > available in my installation, both do not work under next, but with > different errors. \*\*\*\* > > * * * > > After the next try I will give exact copies of the messages… Ah, I was unaware that you were using grextras. That does not work with the next branch, and in fact is not a part of GNU Radio but a set of extensions developed and supported by Ettus R..