[hpsdr] PiHPSDR on RPi3 running Ubuntu Mate

[Matthew J Wolf]

Have you connected the Metis directly to the RPi3 and tried the discovery?


The discovery in both the new and old protocols only work when the PC 
and the radio are on the same local IP network. The discovery uses both 
IP and Ethernet broadcast addresses. Ethernet broadcast to the same 
local network. The discovery does not work through an IP forwarder 
(router). An IP router does not forward IP broadcast traffic.


I have not had issues with PiHPSDR discovering Metis and Hermes. I have 
noticed issues the Hermes-lite responding to PiHPSDR. I have played with 
PiHPSDR on a RPi3, a PC, a Tinker board, and a odroid-xu4.

Some network devices will block and or drop IPv4 packets that are sent 
to the broadcast address of 255.255.255.255. Blocking broadcast traffic 
is a basic security feature.

Some "smart" Ethernet switches will drop Ethernet sent to the Ethernet 
broadcast address. This as also a basic security feature.


I would not recommended passing the traffic thought a network firewall. 
Both versions of the protocol are a real time protocol. The radio 
generates a large amount of data.

Directly connecting the radio to the RPI3 or a PC is the best way to 
make sure that none of the data from the radio is lost.


-Matt N4MTT