Loud Noise Brandmeister Anytone 578

EdEdward

Randomly hearing a loud horn sound on OS4 Pro when using Brandmeister TG91 with Anytone 578 V2.
I don't hear the noise when using DMR repeaters.
Noise is loud and beyond obnoxious.
Any help is appreciated.

AI7HL

EdEdward

I'm having the exact same problem with my Anytone AT-D578UVIII-Plus and my openSPOT4 Pro. It's super annoying. And it's certainly not limited to a single DMR ID.

HA2NON

Check the source DMR ID of the call which makes noise and if you want the OS4 to block calls coming from this ID then add it to the Call mute list on the Settings page, Call mute section (https://manuals.sharkrf.com/openspot4/en/settings-page.html#call-mute-settings)

EdEdward

Please respond to this problem.

Muting every call I.D. after hearing the 100+ db obnoxious honking out of my 878's speaker is NOT a solution.
The noise is random and it can happens one out of ten calls from the same I.D.
The random honking noise does not happen when using my 878 with OS4 Pro or my 578 using a Pi device.
Only when using OS4 Pro with 578.

I called Bridgecom in the U.S.
The representative had no clue why it is happening.

Please advise.

HA2NON

The openSPOT4 does not emits noise to the transceiver on its own. However, if the data coming from the server has noise then it will be forwarded to your transceiver. Please send us a voice recording of the noise to info@sharkrf.com and also send it to the manufacturer of the transceiver and ask them about the issue.

EdEdward

There are absolutely no random honking noises coming from my 578 when not using the OS4 Pro.
It does not happen when the OS4 Pro is not connected.
It does not happen when connected to a DMR / Brandmeister repeater (no hotspot).

Again, the loud horn sound only randomly happens when connected to my 578 using an OS4 Pro.
It does not happen when using a Pi device.
Edit: Just called a friend with a 578 and OS4 Pro.
His does the same thing.

w1moz

I know this may be stretching things a bit, but how is the Anytone set to receive; dual band maybe. I had same problem and was set so Channel A was DMR (digital) and Channel B was set to my local 2m repeater (analog). Digital receive gives off an ungodly sound when digital is detected.

Maybe? W1MOZ 73

EdEdward

Thanks.
I've swapped A and B and put Open Spot to B and analog to the A channel. No difference.
This is not happening using either my 868, 878 or 578 V1.
Friend's 578 V2 is doing the same thing as my 578 v2
Absolutely zero noise using my Pi-Star.

Tyrbiter

EdEdward

That sounds like you need to ask Anytone about it, if the common factor is a 578v2

You could try a very deep comparison of the CPS settings with those on the 578v1 if you are able to do that.

AI7HL

Tyrbiter when you say the common factor is the Anytone 578. Keep in mind… the openSPOT4 is also a common factor. Pi-star hotspots don’t have the issue. It has been established that the openSPOT does not honor things like time slots… but instead just assumes everything should pass through. I wouldn’t be surprised if this “assumption” is causing this problem by passing data through that ought not to be allowed to pass.

EdEdward

V1 and V2 use different CPS's, have different function /variables within their respective CPS's and also have different firmware.

SharkRF will likely tell me to contact Anytone.
It'll take a week for Anytone to reply back in loosely translated english that they don't have a clue and to contact Shark RF.
And it does not happen using my Pi-Star.

Tyrbiter

EdEdward

Well the comparison might help both Anytone and SharkRF to work out what is happening, it clearly isn't trivial.

You may also be able to see what is going on using Live log with your Pi-Star.

EdEdward

I'm the customer.
But...if Shark wants to put me on it's payroll I might consider checking logs, documenting logs, uploading logs, recording and uploading the noise... and attempt to get past the
certainty of an English to Chinese language cluster xxxx with Anytone via E-Mail.

Naa..I think I'll just live with it.
But thank you anyway 🙂

AI7HL

EdEdward I found the openSPOT4 to be virtually unusable with my Anytone 578. So I stopped using it. Doing cross mode with my D-Star radio instead. No more honking.

Tyrbiter

AI7HL
I don't have all the answers, but clearly 2 very similar radios from a single supplier behave differently. I've suggested that there are debug methods you can use to try and identify what is happening. I have Anytone 868 and 878 HTs, I've seen the changelogs in their firmware with many fixes from the original versions. I expect the 578 is the same but I don't own one, nor an openSPOT4. Unless the SharkRF guys can get hold of the 578v2 then they are going to struggle to work out what is happening.

If I had a better idea I would pass it on.

EdEdward

@HA2NON
When you find a solution, please let me know.

HA2NON

There are no timeslots in DMR simplex mode. Timeslots are assigned by the repeater in duplex mode.

M0JUJ

Oh wow yup I'm getting it too, on first connect. Very loud buzz.

EdEdward

@ HA2NON
FYI: The Anytone 578 V2 is currently available through Bridgecom and Amazon.
Buy one and connect it to your OS4 Pro. Then configure that radio for the Brandmeister TG of your choice. 91 would be a good start. Now sit back and wait.
Get back to us with your findings.
I pointed this issue out to you in Dec. of last year.

M0JUJ

EdEdward defo a dmr issue as I get none of it on c4fm. Agreed it only seems to be apparent on BM using dmr to the Os4. Sometimes a background buzz, sometimes a foreground buzz, more often a background buzz.