Hello Bob, I will definitely let someone more familiar with the Elecraft remote answer in more detail but I did want to share. TCP and HTTP protocols happen at different layers of the network stack. TCP is at the transport layer, it defines how to send the data and deals with the actual transport of packets around the network. Whereas HTTP is just the common language at the application layer, at the very core it is just an instruction set. In short, you can use TCP and HTTP together , you can have TCP without HTTP.
It sounds like you are trying to address a very common problem, which is true with most ISPs these days, almost no one has a dedicated IP address anymore unless they are paying for business level services. There are numerous ways to solve this, the easiest and "free" way would just be port forwarding on your router, of course perhaps you already thought of this and if your ATT Mobile system is actually just a wifi hotspot and your router doesn't support that than of course the port forwarding isn't an option. So assuming perhaps that you have already looked at port forwarding and Dynamic DNS and settled on NGROK, the real question is going to be how many connections do they make. I did look at some of the Elecraft Documentation, there does appear to be an HTTP component for connecting to your K3 Remote via a web browser, I also saw reference to TCP port 4626 for the KPA-500 remote. I don't know what other port ranges they use but my gut (and experience with networking) tells me that the free version with 4 tunnels will likely work fine. I hope this helps, feel free to reach out to me off the list for any networking related questions. I will let the Elecraft experts speak to their software. 73 de KJ5T On Thu, May 21, 2020 at 11:09 AM K5WA <k...@comcast.net> wrote: > This may be a Wayne/Eric question but if anyone else knows for sure, > please chime in. > > > > I’m setting up a new remote system and want to plan properly for the pair > of K4s I’ve got ordered. Is the ethernet communication between a K4 and > its Elecraft remote software TCP or HTTP? I’m assuming TCP but thought I’d > better check. > > > > I’m having to go through an ATT Mobile system (CGNAT) with NGROK tunnels > and I’m up against a limit on reserved TCP tunnels so want to make sure I’m > going the right direction before I spring for more reserved TCP tunnels. > 😉 The station is WAY out in the country and that is why I’m stuck with a > mobile cellular ISP. > > > > Thanks, > > > > Bob K5WA > > Houston, TX > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to st...@kj5t.net ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
