# My first post and a real newbie question

**URL:** <https://community.allstarlink.org/t/my-first-post-and-a-real-newbie-question/8892>\
**Category:** AllStarLink\
**Created:** [July 4, 2011, 10:16am UTC](https://community.allstarlink.org/t/my-first-post-and-a-real-newbie-question/8892 "2011-07-04T10:16:26Z")\
**Posts on this page:** 9\
**Page:** 1

<div class="post-metadata">

**Author:** ![VK5ZEA](https://community.allstarlink.org/letter_avatar_proxy/v4/letter/v/db5fbb/32.png) [@VK5ZEA](https://community.allstarlink.org/u/VK5ZEA)\
**Post date:** [July 4, 2011, 10:16am UTC](https://community.allstarlink.org/t/my-first-post-and-a-real-newbie-question/8892/1 "2011-07-04T10:16:26Z")

</div>

Hi Everybody,

I'm busy finalising my AllStarLink node 27871 . It's going to be a simplex (for now) node with the future potential to be linked to my local 70cm repeater.

I am finding one little problem that I can't seem to solve. I have set duplex in usbradio.conf to zero (0) and duplex in rpt.conf to one (1), but as soon as my node radio receives a transmission, it keys up straight away... over the incoming transmission, almost as if it is still configured for duplex mode. This makes it real hard to enter any DTMF codes. (-: Where should be I looking to solve this?

I am handling CTCSS (both TX and RX) in the node radio itself (I am using a Simoco SRM9000 VHF commercial radio). I have a low going logic level that has been tied to the radios "valid signal" flag which is set to CTCSS 107.2Hz, this is fed to the COS input on my URI. The audio output from the radio is squelched, highpass filtered and de-emphasised.

I have set carrierfrom=usb and ctcssfrom=no, I think this then disables CTCSS decoding within the computer. Does this also disable transmitting CTCSS? I have set txmixa=voice which I presume also stops CTCSS from being output from the URI.

I look forward to hearing from you all... via the email list and on air too!

Michael  
VK5ZEA

---

<div class="post-metadata">

**Author:** ![Red\_Button](https://community.allstarlink.org/letter_avatar_proxy/v4/letter/r/97f17d/32.png) [@Red\_Button](https://community.allstarlink.org/u/Red_Button)\
**Post date:** [July 4, 2011, 12:15pm UTC](https://community.allstarlink.org/t/my-first-post-and-a-real-newbie-question/8892/2 "2011-07-04T12:15:44Z")

</div>

Hi Michel, Ok set duplex = 0 in the Rpt.conf  
And set your hangtime = 1 (change it from 1000).

That should get you simplex node working.

Also there will be no telemetry but you will hear connect /disconnect messages.

If there is no statement in Rpt.conf for duplex, it operates in full duplex by default.

Hope this helps.

Jon VA3RQ

> **···**
>
> On 7/4/2011 6:16 AM, Michael Carey wrote:
> 
> > Hi Everybody,
> > 
> > I'm busy finalising my AllStarLink node 27871 . It's going to be a simplex (for now) node with the future potential to be linked to my local 70cm repeater.
> > 
> > I am finding one little problem that I can't seem to solve. I have set duplex in usbradio.conf to zero (0) and duplex in rpt.conf to one (1), but as soon as my node radio receives a transmission, it keys up straight away... over the incoming transmission, almost as if it is still configured for duplex mode. This makes it real hard to enter any DTMF codes. (-: Where should be I looking to solve this?
> > 
> > I am handling CTCSS (both TX and RX) in the node radio itself (I am using a Simoco SRM9000 VHF commercial radio). I have a low going logic level that has been tied to the radios "valid signal" flag which is set to CTCSS 107.2Hz, this is fed to the COS input on my URI. The audio output from the radio is squelched, highpass filtered and de-emphasised.
> > 
> > I have set carrierfrom=usb and ctcssfrom=no, I think this then disables CTCSS decoding within the computer. Does this also disable transmitting CTCSS? I have set txmixa=voice which I presume also stops CTCSS from being output from the URI.
> > 
> > I look forward to hearing from you all... via the email list and on air too!
> > 
> > Michael  
> > VK5ZEA
> > 
> > \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_  
> > App\_rpt-users mailing list  
> > App\_rpt-users@ohnosec.org  
> > [ohnosec.org](http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users)

---

<div class="post-metadata">

**Author:** ![Telesistant](https://community.allstarlink.org/letter_avatar_proxy/v4/letter/t/a87d85/32.png) [@Telesistant](https://community.allstarlink.org/u/Telesistant)\
**Post date:** [July 4, 2011, 12:18pm UTC](https://community.allstarlink.org/t/my-first-post-and-a-real-newbie-question/8892/3 "2011-07-04T12:18:21Z")

</div>

duplex=1 is quite nice, actually.

What you really need to do is set carrierfrom=usbinvert  
since your signal is _low_ true.

JIM WB6NIL

> **···**
>
> > Date: Mon, 4 Jul 2011 08:15:44 -0400  
> > From: jrorke@cogeco.ca  
> > To: [app\_rpt-users@ohnosec.org](mailto:app_rpt-users@ohnosec.org)  
> > Subject: Re: [App\_rpt-users] My first post and a real newbie question
> > 
> > Hi Michel, Ok set duplex = 0 in the Rpt.conf  
> > And set your hangtime = 1 (change it from 1000).
> > 
> > That should get you simplex node working.
> > 
> > Also there will be no telemetry but you will hear connect /disconnect  
> > messages.
> > 
> > If there is no statement in Rpt.conf for duplex, it operates in full  
> > duplex by default.
> > 
> > Hope this helps.
> > 
> > Jon VA3RQ
> > 
> > On 7/4/2011 6:16 AM, Michael Carey wrote:
> > 
> > > Hi Everybody,
> > > 
> > > I’m busy finalising my AllStarLink node 27871 . It’s going to be a  
> > > simplex (for now) node with the future potential to be linked to my  
> > > local 70cm repeater.
> > > 
> > > I am finding one little problem that I can’t seem to solve. I have set  
> > > duplex in usbradio.conf to zero (0) and duplex in rpt.conf to one (1),  
> > > but as soon as my node radio receives a transmission, it keys up  
> > > straight away… over the incoming transmission, almost as if it is  
> > > still configured for duplex mode. This makes it real hard to enter any  
> > > DTMF codes. (-: Where should be I looking to solve this?
> > > 
> > > I am handling CTCSS (both TX and RX) in the node radio itself (I am  
> > > using a Simoco SRM9000 VHF commercial radio). I have a low going logic  
> > > level that has been tied to the radios “valid signal” flag which is  
> > > set to CTCSS 107.2Hz, this is fed to the COS input on my URI. The  
> > > audio output from the radio is squelched, highpass filtered and  
> > > de-emphasised.
> > > 
> > > I have set carrierfrom=usb and ctcssfrom=no, I think this then  
> > > disables CTCSS decoding within the computer. Does this also disable  
> > > transmitting CTCSS? I have set txmixa=voice which I presume also stops  
> > > CTCSS from being output from the URI.
> > > 
> > > I look forward to hearing from you all… via the email list and on  
> > > air too!
> > > 
> > > Michael  
> > > VK5ZEA
> > > 
> > > * * *
> > > 
> > > App\_rpt-users mailing list  
> > > [App\_rpt-users@ohnosec.org](mailto:App_rpt-users@ohnosec.org)  
> > > [ohnosec.org](http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users)
> > 
> > * * *
> > 
> > App\_rpt-users mailing list  
> > [App\_rpt-users@ohnosec.org](mailto:App_rpt-users@ohnosec.org)  
> > [ohnosec.org](http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users)

---

<div class="post-metadata">

**Author:** ![Telesistant](https://community.allstarlink.org/letter_avatar_proxy/v4/letter/t/a87d85/32.png) [@Telesistant](https://community.allstarlink.org/u/Telesistant)\
**Post date:** [July 4, 2011, 12:20pm UTC](https://community.allstarlink.org/t/my-first-post-and-a-real-newbie-question/8892/4 "2011-07-04T12:20:27Z")

</div>

also for transmit, set txprelim=no. That will make it not generate  
“flat” pre-emphasized limited audio for direct modulation.

JIM

> **···**
>
> * * *
> 
> From: [telesistant@hotmail.com](mailto:telesistant@hotmail.com)  
> To: jrorke@cogeco.ca; [app\_rpt-users@ohnosec.org](mailto:app_rpt-users@ohnosec.org)  
> Date: Mon, 4 Jul 2011 05:18:21 -0700  
> Subject: Re: [App\_rpt-users] My first post and a real newbie question
> 
> duplex=1 is quite nice, actually.
> 
> What you really need to do is set carrierfrom=usbinvert  
> since your signal is _low_ true.
> 
> JIM WB6NIL
> 
> > Date: Mon, 4 Jul 2011 08:15:44 -0400  
> > From: jrorke@cogeco.ca  
> > To: [app\_rpt-users@ohnosec.org](mailto:app_rpt-users@ohnosec.org)  
> > Subject: Re: [App\_rpt-users] My first post and a real newbie question
> > 
> > Hi Michel, Ok set duplex = 0 in the Rpt.conf  
> > And set your hangtime = 1 (change it from 1000).
> > 
> > That should get you simplex node working.
> > 
> > Also there will be no telemetry but you will hear connect /disconnect  
> > messages.
> > 
> > If there is no statement in Rpt.conf for duplex, it operates in full  
> > duplex by default.
> > 
> > Hope this helps.
> > 
> > Jon VA3RQ
> > 
> > On 7/4/2011 6:16 AM, Michael Carey wrote:
> > 
> > > Hi Everybody,
> > > 
> > > I’m busy finalising my AllStarLink node 27871 . It’s going to be a  
> > > simplex (for now) node with the future potential to be linked to my  
> > > local 70cm repeater.
> > > 
> > > I am finding one little problem that I can’t seem to solve. I have set  
> > > duplex in usbradio.conf to zero (0) and duplex in rpt.conf to one (1),  
> > > but as soon as my node radio receives a transmission, it keys up  
> > > straight away… over the incoming transmission, almost as if it is  
> > > still configured for duplex mode. This makes it real hard to enter any  
> > > DTMF codes. (-: Where should be I looking to solve this?
> > > 
> > > I am handling CTCSS (both TX and RX) in the node radio itself (I am  
> > > using a Simoco SRM9000 VHF commercial radio). I have a low going logic  
> > > level that has been tied to the radios “valid signal” flag which is  
> > > set to CTCSS 107.2Hz, this is fed to the COS input on my URI. The  
> > > audio output from the radio is squelched, highpass filtered and  
> > > de-emphasised.
> > > 
> > > I have set carrierfrom=usb and ctcssfrom=no, I think this then  
> > > disables CTCSS decoding within the computer. Does this also disable  
> > > transmitting CTCSS? I have set txmixa=voice which I presume also stops  
> > > CTCSS from being output from the URI.
> > > 
> > > I look forward to hearing from you all… via the email list and on  
> > > air too!
> > > 
> > > Michael  
> > > VK5ZEA
> > > 
> > > * * *
> > > 
> > > App\_rpt-users mailing list  
> > > [App\_rpt-users@ohnosec.org](mailto:App_rpt-users@ohnosec.org)  
> > > [ohnosec.org](http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users)
> > 
> > * * *
> > 
> > App\_rpt-users mailing list  
> > [App\_rpt-users@ohnosec.org](mailto:App_rpt-users@ohnosec.org)  
> > [ohnosec.org](http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users)
> 
> * * *
> 
> App\_rpt-users mailing list  
> [App\_rpt-users@ohnosec.org](mailto:App_rpt-users@ohnosec.org)  
> [http://ohnosec.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users)

---

<div class="post-metadata">

**Author:** ![VK5ZEA](https://community.allstarlink.org/letter_avatar_proxy/v4/letter/v/db5fbb/32.png) [@VK5ZEA](https://community.allstarlink.org/u/VK5ZEA)\
**Post date:** [July 4, 2011, 9:12pm UTC](https://community.allstarlink.org/t/my-first-post-and-a-real-newbie-question/8892/5 "2011-07-04T21:12:31Z")

</div>

Thanks to all with your replies,

```
It was the carrierfrom-usbinvert that I needed to correct, I thought

```

I did try this before but it may have coincided with times I wasn’t  
restarting/reloading Asterisk properly.

```
Now I have to tweak my audio levels when I bring home my radio test

```

set from work. I am being a nice employee and have offered the boss  
the use of my personal gear while his IFR 500A is away getting  
fixed!

```
I do like the telemetry tones but I have also reduced my hangtime a

```

little, something very calming about those beeps! It might just be  
that it’s all new right now and in time I will be less fond of them.  
(-:

```
Michael.

VK5ZEA

```

> **···**
>
> jrorke@cogeco.ca  
> [app\_rpt-users@ohnosec.org](mailto:app_rpt-users@ohnosec.org)
> 
> [App\_rpt-users@ohnosec.org](mailto:App_rpt-users@ohnosec.org)  
> [http://ohnosec.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users)
> 
> [App\_rpt-users@ohnosec.org](mailto:App_rpt-users@ohnosec.org)  
> [http://ohnosec.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users)  
> [App\_rpt-users@ohnosec.org](mailto:App_rpt-users@ohnosec.org)[http://ohnosec.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users)

---

<div class="post-metadata">

**Author:** ![va3uv](https://community.allstarlink.org/letter_avatar_proxy/v4/letter/v/e9a140/32.png) [@va3uv](https://community.allstarlink.org/u/va3uv)\
**Post date:** [July 4, 2011, 10:42pm UTC](https://community.allstarlink.org/t/my-first-post-and-a-real-newbie-question/8892/6 "2011-07-04T22:42:16Z")

</div>

Hi Michael;

Welcome to app\_rpt!

May be we can interest you in a dual mode DV / app\_rpt system once you've got your feet wet!

Talk soon!

Cheers,

Ramesh.  
[www.va3uv.com](http://www.va3uv.com)

Sent on the TELUS Mobility network with BlackBerry

> **···**
>
> -----Original Message-----  
> From: Michael Carey \<[michaelcarey@internode.on.net](mailto:michaelcarey@internode.on.net)\>  
> Sender: [app\_rpt-users-bounces@ohnosec.org](mailto:app_rpt-users-bounces@ohnosec.org)  
> Date: Tue, 05 Jul 2011 06:42:31  
> Cc: app\_rpt mailing list\<[app\_rpt-users@ohnosec.org](mailto:app_rpt-users@ohnosec.org)\>  
> Subject: Re: [App\_rpt-users] My first post and a real newbie question
> 
> \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_  
> App\_rpt-users mailing list  
> [App\_rpt-users@ohnosec.org](mailto:App_rpt-users@ohnosec.org)  
> [http://ohnosec.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users)

---

<div class="post-metadata">

**Author:** ![pjcvk5](https://community.allstarlink.org/letter_avatar_proxy/v4/letter/p/8baadc/32.png) [@pjcvk5](https://community.allstarlink.org/u/pjcvk5)\
**Post date:** [August 11, 2023, 12:42am UTC](https://community.allstarlink.org/t/my-first-post-and-a-real-newbie-question/8892/7 "2023-08-11T00:42:06Z")

</div>

Hi Michael.  
I am new to All Star.  
I want to set up my own simplex VHF station. I have a couple of Simoco SRM9000 radios, both UHF and VHF.  
Do you have any detail on how to modify and set up the radio.  
I also want to use with my local repeater in the future but one step at a time.  
Any info you can share would be greatly appreciated.  
Cheers  
Peter  
VK5VK

---

<div class="post-metadata">

**Author:** ![Mike](https://community.allstarlink.org/user_avatar/community.allstarlink.org/mike/32/1569_2.png) [@Mike](https://community.allstarlink.org/u/Mike)\
**Post date:** [August 11, 2023, 1:15am UTC](https://community.allstarlink.org/t/my-first-post-and-a-real-newbie-question/8892/8 "2023-08-11T01:15:06Z")

</div>

Peter, the post you replied to is over 10 years old, so you know.

I suggest you make a new post with a proper title of your issue like…

How to mod/setup Simoco SRM9000 for ASL

You are more apt to get a knowledgeable reply if any are familiar with the radio.  
I am not.

---

<div class="post-metadata">

**Author:** ![Mike](https://community.allstarlink.org/user_avatar/community.allstarlink.org/mike/32/1569_2.png) [@Mike](https://community.allstarlink.org/u/Mike)\
**Post date:** [August 11, 2023, 1:15am UTC](https://community.allstarlink.org/t/my-first-post-and-a-real-newbie-question/8892/9 "2023-08-11T01:15:48Z")

</div>

Closed on August 11, 2023, 1:15am UTC