Tackling Radio Chatter & Crosstalk on our Off-Road Adventures

[Mahesh_]

Subject: Tackling Radio Chatter & Crosstalk on our Off-Road Adventures – Need Your Input!

Hey everyone,

Hope you're all having a great week!
I wanted to open a discussion about something I know many of us have been experiencing on our off-roading trips lately: the increasing amount of radio chatter and crosstalk from other groups, including farmers and other off-roaders. It seems like every time we're out, it's getting harder to have clear comms within our convoy due to all the interference.

I've been doing some reading up on our walkie-talkies and radio frequencies, and I stumbled across the concept of CTCSS (Continuous Tone-Coded Squelch System) and DCS (Digital Coded Squelch), and how using a specific "code" or "tone" can help filter out unwanted transmissions.
For those unfamiliar, essentially, these systems add a sub-audible tone or digital code to our transmissions. Our radios would then only "open up" and let us hear messages from others who are using the exact same main frequency and the exact same tone/code. This means we'd ideally only hear our own group, even if others are on the same main channel.

My question to the community is:
Have we already made progress on adopting CTCSS/DCS codes as a standard practice for our convoys?

If not, what are your thoughts on implementing this? I think it could significantly clean up our radio communications and make our trips much smoother.

 * Are most of your radios capable of setting these codes?
 * Do we have a preferred channel and code combination already in use by some groups that we could standardize on?
 * Any concerns or challenges you foresee with this approach?

Let's discuss! Clear communication is key for safe and enjoyable off-roading.

cheers  

 

[Gaurav]

It's an interesting topic for discussion among Radio Experts like @Frederic

Mostly I use Channel 8 in Dubai and Channel 3 or 8 in Sharjah - to stay away from farm boys and other off-road convoys chatter.

[ChrisW]

The simplest starting point is to become familiar with how the squelch function works on your radio.

 

This basically raises the threshold (the floor) at which your radio will make transmissions audible. Very weak or distant signals can be screened out, whereas stronger signals (such as from radios in the convoy) remain audible. 
 

In my experience this screens many of the nuisance signals from construction workers. 
 

The use of more sophisticated modes would be great for many reasons - but it also requires a level of setup that might be beyond the scope of our weekend drives. 

[Mahesh_]

You're right, @ChrisW! I've been experimenting with my Squelch settings, trying values from 5 to 9. I've had some luck filtering out most of the static and a bit of the weaker chatter, but the stronger signals are still coming through loud and clear, which is pretty annoying.
 

[ChrisW]

Cool, it helps but yes - I have the same issue. We somehow seem to often land on the same channels as farm or construction guys! 

Edited July 30, 2025 by ChrisW

[Frederic]

On 7/28/2025 at 9:27 PM, Mahesh_ said:

Subject: Tackling Radio Chatter & Crosstalk on our Off-Road Adventures – Need Your Input!

Hey everyone,

Hope you're all having a great week!
I wanted to open a discussion about something I know many of us have been experiencing on our off-roading trips lately: the increasing amount of radio chatter and crosstalk from other groups, including farmers and other off-roaders. It seems like every time we're out, it's getting harder to have clear comms within our convoy due to all the interference.

I've been doing some reading up on our walkie-talkies and radio frequencies, and I stumbled across the concept of CTCSS (Continuous Tone-Coded Squelch System) and DCS (Digital Coded Squelch), and how using a specific "code" or "tone" can help filter out unwanted transmissions.
For those unfamiliar, essentially, these systems add a sub-audible tone or digital code to our transmissions. Our radios would then only "open up" and let us hear messages from others who are using the exact same main frequency and the exact same tone/code. This means we'd ideally only hear our own group, even if others are on the same main channel.

My question to the community is:
Have we already made progress on adopting CTCSS/DCS codes as a standard practice for our convoys?

If not, what are your thoughts on implementing this? I think it could significantly clean up our radio communications and make our trips much smoother.

 * Are most of your radios capable of setting these codes?
 * Do we have a preferred channel and code combination already in use by some groups that we could standardize on?
 * Any concerns or challenges you foresee with this approach?

Let's discuss! Clear communication is key for safe and enjoyable off-roading.

cheers  

 

Hi @Mahesh_ very good topic you brought up!

- When we created the 10 Carnity Frequencies, we wanted to make sure they are in the PMR446 range, which is the so called license-free frequency range. Doing this would avoid getting us in trouble with the authorities. Unfortunately these frequencies are indeed open for farmers and construction workers as well. However the most busy frequencies are usually 1,2,3,4. Perhaps we can start using 5,6,7,8,9,10 a bit more which should definitely help. 
 

- CTCSS codes are a nice option to use to avoid chatter on your chosen frequency, but the complexity for us to set it up is big. We regularly have new members joining us who struggle with programming their radios, and although we offer advice and help to program the most used ones, this would another layer of complexity with potential issues during the drive of not hearing each other or other broadcast issues. There used to be a time that most of our briefings were spent programming other people’s radios, and with so many different models being used this is a load that falls onto the shoulders of the marshal or lead. For that reason we decided not to use it. Worst case, Any new member that brings their radio can just type in the frequency we use, without further complications.

- proper SQL or Squelch setting really does help, EXCEPT with the Baofeng UV5R which has squelch issues out of the box. For that reason there was a hack created that allows to extend the squelch way further than the original setting. It takes a laptop, CHIRP software, and 20mins of your time to install the hack. Whoever is interested let me know. 
 

- to avoid having two Carnity convoys using the same frequency, we have an internal drive planning sheet where we post the planned channel that each will use. This helps to avoid cross comms amongst channels, but sometimes we tend to forget or assume that the other convoy in a different emirate won’t hear us 😛. In reality when you are on elevated ground the signal can reach many miles. 

[Mahesh_]

@Frederic yes am interested on that hack for Baofeng UV5R. Appreciate your guidance. 

[Gaurav]

Another small thing to add, ppl buying 10 watts radios thinking awesome reach and crisp comms during drive, have to bear that with a bigger radius, you will be inviting bigger chatter as well.

I bought Kangda thinking the same, especially to see improvement for long convoys and realize I can hear the whole village or Emirate, so now I use the setting for 5 watts, which is plenty for a single convoy.

[Frederic]

1 hour ago, Mahesh_ said:

@Frederic yes am interested on that hack for Baofeng UV5R. Appreciate your guidance. 

 

[Mahesh_]

I also did the something similar. Got a corny DT8188 but it is good with a SQL setting of 7, no static and unwanted chatter. Much better than the UV5R though.