Echo on simplex Node after update. USB Radio Interface

AllStarLink
1

I have been running a simplex node for several years now - Wyse Dell 3040 - CM108 HB Interface - GE Phoenix Radio - Discriminator input - Direct Mod to the transmitter - Ptt and GND from the CM108 using an open collector transistor. Receiver Unsquelch (COS) and CTCSS Decode and Encode are handled by DSP. Node # 577817 - http://44.30.10.13/allscan/

I performed this update → apt-get update -y && apt-get upgrade -y && apt-get dist-upgrade -y && apt autoremove -y && sudo apt --fix-broken install -y && sudo apt clean -y && sudo dpkg --configure -a && sudo apt --fix-missing install

After the update everyone I talked to reported an echo of my last few words during the hang time. USB Radio Interface - Parrot was enabled by default after the update - I did set to 0 and also I usually connect to 48752 and for a change tried 559822 - still echoes.

Any suggestions ?

Steve NU5D

root@repeater:~# sudo asl-show-version

********** AllStarLink [ASL] Version Info **********

OS : Debian GNU/Linux 12 (bookworm)
OS Kernel : 6.1.0-43-amd64

Asterisk : 22.7.0+asl3-3.7.1-1.deb12
ASL [app_rpt] : 3.7.1

Installed ASL packages :

Package Version
============================== ==============================
allmon3 1.7.0-1.deb12
asl3 3.15-1.deb12
asl3-asterisk 2:22.7.0+asl3-3.7.1-1.deb12
asl3-asterisk-config 2:22.7.0+asl3-3.7.1-1.deb12
asl3-asterisk-modules 2:22.7.0+asl3-3.7.1-1.deb12
asl3-menu 1.16-1.deb12
asl3-tts 1.0.1-1.deb12
asl3-update-nodelist 2.0.0-1.deb12
asl-apt-repos 2.0-1.deb12
dahdi 1:3.1.0-2
dahdi-dkms 1:3.4.0-10.asl.deb12
dahdi-linux 1:3.4.0-10.asl.deb12
dahdi-source 1:3.4.0-10.asl.deb12
root@repeater:~#Setup Information

Use sudo asl-show-version to obtain this information from the console or SSH

Asterisk Version: 22..x.y+asl3-3.n.m
ASL3 Version: 3.x.y

Inquiry

See https://allstarlink.github.io/user-guide/troubleshooting/ on how to ask a good question to obtain the quickest and best assistance

2

Can you be more specific about "echo", specifically where that's being heard? Are you saying that your transmission on remote nodes over a link are hearing part of your transmission twice? Or the audio quality is distorted?

3

May I connect to a node / repeater in your neighborhood ? Otherwise I have to listen to myself on a 2nd repeater. de nu5d

4

When I use my talkie on 441.375 simple tone 88.5 into my simplex node (same freq/tone) connected via internet to other hubs (48752 or 559822) folks on the other end are hearing the last few words of my transmission as an echo. I do not hear this - I am getting reports from folks on the far end. I do not hear any echo on the node end. I am hoping to connect to another node / repeater who can give a accurate report. Folks report hearing the last word or two, two time. I don’t know about distortion or so. Folks on the receiving end only report hearing the last word or so, two times. de nu5d

5

Listening to myself this morning - node 577817 connected to hub 559822 and listening on a local repeater - when I send to my node (577817) thru my talkie - and say my call sign - nu5d, I hear myself (on one of the linked repeaters ((node 559829 / 146.69)) - not the node itself, of course) say nu5d, 5d - perfectly clear - no distortion - same loudness - seems just the last second or so of my transmission is broadcast a 2nd time - no gap or delay in between. I can easily connect to a node local to you if you would like to hear for yourself. de nu5d

6

Thanks to some help - when I connect the node / hot spot to a dummy load the echo goes away - points to something off the air causing the echo... I changed the CTCSS on the node - no joy - still a puzzle -

txctcssdefault = 94.8 ; default TX CTCSS frequency, any frequency permitted
rxctcssfreqs = 94.8 ; RX CTCSS frequencies list in floating point. must be in table
txctcssfreqs = 0000 ; TX CTCSS frequencies list. any frequency permitted. will follow RX CTCSS frequency
rxctcssoverride = no ; Set to yes to start out in carrier squelch mode

7

Solved - No Problem with Software. There a 4 backyard no-coordination required repeater pairs with the TX VHF FM Society I moved from 441.300 to 441.375 to get away from a DMR repeater that was making noise on the tail of my node. Only to find a backyard repeater 30 miles to the East. Problem found - Changing tones did not fix the noise in the tail - but at least there is a cause and effect. Thank you all and 73, Steve NU5D

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9

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