Broken Pipe APRSD

[Alex Knoedler]

Hey! Was inspired by the $60 APRS video. Having some trouble getting to the demonstrated success in the video using:

digipi 2.0-1, raspberry pi zero 2w, a USB cable with two ferrite rings, Baofeng UV-5R, and N6AD AIOC

I'm able to connect to http://digipi (consistent) & start webchat, then connect to the webchat @ http://digipi:8055 (intermittent)

I can receive APRS messages sent from a separate radio (kv4p HT and phone) but I cannot for the life of me transmit back. I am new to APRS so might have some fundamental config messed up outside of the hardware. On digipi, I put my callsign in, select WIDE1-1, and send a message but the syslog (intermittent) shows:

Feb 07 01:04:58 digipi webchat.sh[1056]: 2026-02-07 01:04:58.533 | TX-[CALLSIGN]-6197     | ERROR    | [Errno 32] Broken pipe | aprsd.threads.tx:_send_direct:91
Feb 07 01:05:05 digipi webchat.sh[1056]: 2026-02-07 01:05:05.576 | TX-[CALLSIGN]-6196     | ERROR    | Failed to send packet:  -[CALLSIGN]>APZ100:: [CALLSIGN]    :[MESSAGE]{6196 | aprsd.threads.tx:_send_direct:90

I got the ferrite rings when the patreon/google group suggested it might be a RF power issue on the USB cable. The addition of the rings did not change these error codes. 

Appreciate any help!

[Craig]

Hi Alex,

PktLog should tell you what's up.  I'm guessing direwolf dies due to RF on the USB cable, then
webchat tells us it's gone (broken pipe).  Just a guess tho, let us know what PktLog says please.

-craig
KM6LYW