# Re: Error in OP25 Decode block

**URL:** <https://www.ruby-forum.com/t/re-error-in-op25-decode-block/231056>\
**Category:** GNU Radio\
**Created:** [July 18, 2014, 4:52pm UTC](https://www.ruby-forum.com/t/re-error-in-op25-decode-block/231056 "2014-07-18T16:52:19Z")\
**Posts on this page:** 3\
**Page:** 1

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**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:** [July 18, 2014, 4:52pm UTC](https://www.ruby-forum.com/t/re-error-in-op25-decode-block/231056/1 "2014-07-18T16:52:19Z")

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I built it with Pybombs. I just installed gr-baz. I didn’t know there  
was  
a way to install op25 decoder separately.

I would like to know how to install the GNURadio 3.7.4 just announced.

Doug

* * *

On Fri, Jul 18, 2014 at 3:37 PM, Doug H.[removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)  
wrote:

> I have built Ubuntu 14.04 and installed Pybombs, GNURadio 3.7.2, op25 and  
> gr-baz. Tom R. helped me through an error with unresolved baz imports.  
> Now, I brought in the blocks to decode op25 and the OP25 Decoder block fails  
> at run-time with -

Did you use packaged Gnuradio or built with pybombs ?

Did you actually install the OP25 decoder itself ? (and not just the  
gr-baz wrapper around it)

Cheers,

```
Sylvain

```

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**Author:** ![douha](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/bc8723/32.png) [@douha](https://www.ruby-forum.com/u/douha)\
**Post date:** [July 18, 2014, 5:22pm UTC](https://www.ruby-forum.com/t/re-error-in-op25-decode-block/231056/2 "2014-07-18T17:22:31Z")

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> I built it with Pybombs. I just installed gr-baz. I didn’t know there was  
> a way to install op25 decoder separately.

I meant Gnuradio, not op25.

Did you install a package, or did you build it from source with  
pybombs ? (pybombs will build from source right ?)

Cheers,

Sylvain

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<div class="post-metadata">

**Author:** ![douha](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/bc8723/32.png) [@douha](https://www.ruby-forum.com/u/douha)\
**Post date:** [July 18, 2014, 5:54pm UTC](https://www.ruby-forum.com/t/re-error-in-op25-decode-block/231056/3 "2014-07-18T17:54:50Z")

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Sylvain -

Here is exactly what my install sequence was:

Create fresh Ubuntu 14.04  
install updates and upgrades (from the howtoubuntu site)

git clone git://github.com/pybombs/pybombs  
cd pybombs  
./pybombs install gr-op25 (This installs gnuradio 3.7.2 and  
op25)  
./pybombs env  
source /home/doug\_/usr/local\_/setup\_env.sh

./pybombs install gr-baz

gnuradio-companion

Built an op25 flowgraph from blocks on the rh side of GRC and ran it.  
The _OP25 Decoder (Simple)_ block triggered the errors with _name op25_.

Doug

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