I am eager to start the 1.4 experiments and also to see what I can do to 'tweak' the bandwidth requirements so as to bring SmartSDR to the 'home' side of the system. CWX isn't perfect because of some TightVNC glitches (not SmartSDR's fault, here) but it can get the job done in the face of dropouts as long as I can hear 'enough' of the pileup. I also sometimes run CWX (taking advantage of local LAN) instead of the remoterig solution (which is a local CW key that is somehow streamed) when I start to get lots of dropouts. I am strongly tempted to continue to run the SmartSDR locally for at least RTTY based on these experiences even with 1.4. If it was real latency, it wouldn't come and go like that. So, my strong suspicion is that it is a queuing effect, not latency per se. And, sometimes minor tweaks in bandwidth help substantially. While I don't quite have the tools to prove it, I notice it is strongly correlated with the early evening and some weekend times, when a heavier overall load is being placed on my ISPs by other users simply by being home from work. I do notice occasional dropouts on audio throughout the day. Remote Shack's ISP is supposed to provide 2 megabits up, 3 down and home is supposed to be ten down and one up. That's well within both system's capabilities as far as raw data rate goes. Perhaps by coincidence, my data load is about 275 k bits per second, which the reference thread suggests would be the case with a true remote with 1.3.8's DAX. Note that no DAX flows over the internet with this solution. So, it can't be contributing much to latency either, other than whatever it takes to put a minimum encrypted packet together plus any pacing overhead. As far as I can make out from basic utilities like 'top', VPN is not a big contributor to the CPU load on either router. I also run TightVNC to control the remote PC. I run the remoterig solution today for CW and SSB audio, plus the 'speaker' output. Thus, no port forwarding, not much muss or fuss really. Tinc takes care of having each router find each other and ALSO establish a VPN connection between them, all automatic. But VPN is not a significant issue on my 1.3.8 setup.Īs you may recall from other threads, I took a pair of commercially available routers, flashed them with OpenWRT, and installed a utility called tinc. I will see in a day or two how it goes with 1.4.

Pia on dd wrt v24