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Flex 6xxx and digital modes via remote connection
I've purchased a Flex-6400, though it hasn't shipped yet. I've been working with a buddy of mine to set it up at a remote location, but recently in speaking with him. He is unsure if digital modes will be usable since the radio will be remote and no PC at that location.
Is it possible to do digital modes via SmartSDR from a remote location or is a PC required at the remote location with a VPN connection to it? (or even a Maestro at some point in the future)
Answers
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Unfortunately SmartLink does not support DAX (yet...), but you can solve it by running a through a VPN tunnel.
I'm not sure how it will consume your bandwidth...0 -
The simplest solution today is to put an inexpensive Raspberry Pi VPN server at the remote location. Log into the VPN from your client and you can then natively connect via DAX, CAT, and SmartSDR if desired.
I do recommend, if you're not experienced with networking, that you consult with a friend to set-up the Raspberry Pi. It's not difficult if you understand a bit of Linux and networking.
Most of us use OpenVPN. A google search will yield a lot of tutorials. The software is free and well supported.
The reason Flex has not implemented DAX and CAT remotely is due to bandwidth issues many users would experience. That would lead to a LOT of support calls to Flex which they cannot solve since the only solution is to provide more bandwidth.
You'll love the FlexRadio!
73,
Mack
W4AX
Alpha Team0 -
I don't suppose SmartLink supporting DAX is in t he future road map?0
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Thanks Mack,
I'm knowledgeable in Linux, OpenVPN, and R-Pi. It will be setting up the Flex to work with it is where I may end up with questions.
Do we know what the bandwidth requirements are for supporting this?0 -
Yes, it has been stated that DAX with smarlink is planed.0
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May I "piggy-back" on this question/issue?
I am in the process of evaluating the feasibility of changing three QTHs from Elecraft equipment to Flex. The Elecraft stuff has performed excellently -- except for "connectivity" and remote operating.
For this to work for me I'd want the logging software/etc (DXLab) to be at the control location, which may be either of two of the three QTHs. (One is a commercial tower site in a rather austere location -- but with great bandwidth. No control/operating from there.)
I understand there are issues using DAX via SmartLink (sad). However, I use Peplink routers to form persistent VPN connections between the three locations. The routing tables are automatically updated immediately after the VPNs are connected. Each QTH has its own subnet -- 192.168.10.0/24, 192.168.15.0/24 and 192.168.20/24, respectively. One can, for example, use a browser to connect to a IOT device/etc running on a different subnet -- without ever leaving the VPN/local network environment.
I might mention that I'd need to do CW, digital modes and phone, the last being least important. I use Winwarbler (part of the DXLab Suite) to send keyboard CW (although I decode with my ear) and for RTTY. WSJT-X should also run from the control QTH.
So, I guess there are two "big questions" :<) :
1. Suppose I have a Maestro or computer running SmartSDR at one QTH. Will I be able to choose a Flex 6XXX radio located at another QTH and still enjoy full "Flex functionality?"
2. Would there be any issues operating remote 6XXX radios with the DXLab software at the operating QTH?
A negative answer to either of these would suggest a "no go" vis-a-vis the contemplated migration. A work-around could be considered so long as it is not a kludge or "fiddly"as the Brits say. ;<)0 -
As I understand correct you can enjoy almost full functionality. You can't get DAX via your VPN setup. You need to be on the same subnet in order for it to work. Rigcontrol via com-ports etc will work just fine.
Adde0 -
I don't see “Audio Over IP” being a problem as a LAN has more than enough bandwidth however audio data compression becomes a lot more important with a Wi-Fi or over the internet connection where bandwidth can vary drastically.
The good news is that there are already great audio over IP CODEC’s available today that are made for various audio over IP applications, In fact many of them can process multi channel audio with very low latency. My guess is when the time comes FRS will just incorporate one of these CODEC’s into SSDR in the future. Some have a license fee and others are license free it will just come down to witch one works best.
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TU. That's what I was afraid of. While I'm not knowledgeable of FRS' approach to determining if a radio is on the local subnet, it would *seem* that if one changed the mask when searching from 255.255.255.0 to 255.255.0.0 that would do it. Such a change would permit a search from 192.168.0.1 through 192.168.255.254. (That's a lot of turf -- 65,534 addresses but there is no reason why the user could not constrain the search during set-up.)
It also seems to me that the "audio issue" raised here is a non-starter. Audio traverses the internet all the time. With decent bandwidth, a little QOS, and a good CODEC, it generally works quite well, in spite of the fact that the internet was designed as "best effort." And, when it fails it certainly is *not* FRS' fault! Hence, I don't understand the reticence of FRS to enable inter-LAN connectivity. But, that's what I'm here to find out: "Will Flex work for me?" [Side note: So far, it looks like "maybe some day." We'll see. I'm still learning. :<) ]
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It is a feature we are investigating providing. The challenge is the high bandwidth utilization of DAX0
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You haven’t mentioned why you are considering replacing the Elecraft. What specific problems are you encountering that made you reach the conclusion you need new rigs? Is it possible that the rigs have nothing to do with the problem? IMHO, it is hard to beat the combination of Elecraft + RemoteRig for remote operation. There is a good reason why the commercial remote QTH sites all use Elecraft. You know what you are doing from network perspective and can make the RemoteRig setup work. Consider this route before ripping out the station and buying new radios.0
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2-20 mbps depending on the type and number of DAX streams. Which is why DAX is not currently supported and why we are investigating how to best implement that will have the least impact on network bandwidth.0
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Hi. Yes, I agree. Elecraft and FRS are among those at the "top of the pile" performance-wise. I have used remote-rig and I'd characterize it as a "nicely performing kludge." It's a great add-on for equipment that was not designed to be network capable and many folks have used it effectively. Falls way, way short of controlling a complex remote station unless TeamViewer/RDT is used. I used one of my two RR pairs to control a simple, 100W 6m remote station and it worked splendidly. But, when one adds a plethora of "stuff" at the "radio end" well, it's just not well integrated. I also have a newer RR "twin" that's pretty much still in the box that I'm going to sell regardless.
I've worked some great DX with the K3s and their RX on CW is incredible. But, comparing my P3s to what FRS has to offer is nonsensical, for a single example.
Rest assured, I'm not too interested in sending $15-20K or more of stuff to the used market and buy all new. But I'll do what I have to do. Unfortunately, I know not a single person in my area who uses FRS in a sophisticated way (not talking about just rag-chewing on 80 phone). Never even seen it "work!" So, I'm "investigating." I bought a 6300 and a Maestro and am, shall we say, "learning," albeit far more slowly than I'd like.
I appreciate your comments! :<)
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You are trying to solve two vastly different use cases. My suggestions for you to consider: 1) Keep the Elecraft + RR for remote radio control 2) Deploy Green Heron Everywhere for full station control- antenna selection, stacking, rotator control, etc. With GHE your experience running the station will be identical regardless if local or remote.0
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running here trough VPN whit DAX and IQ Strem whit no issue
usually i run IQ @ 48k for 2-3 hour for CW skimmer and remain of the day whit DAX active on 1 slice
this is my internet usable for last couple of day 18,19 was very active > 8hour of EME operation
noting do for reduce bandwidth like slow down refresh rate or else
this include "causual" home internet usage of 6 to 10gb per day
so as long you stick to 1 slice VPN is manageable and have no limitation
if need low bandwidth for digital mode whit multiple slide put computer remote and access it trough teamviewer / anydesk ,this is what i doe for "monitoring" eg cw-skimmer that send me spot via telnet or WSJT-x trough pskspotter
p.s. make sure that if someday you use audio CODEC to really chose it very carefully ,
most of it destroy digital mode or extreme weak signal ,try to do digital mode whit RCForb ;-)
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I appreciate your thoughts. TU. I played with RR until I gave up. Never being able to send CW with Winwarbler was one of the barriers -- I don't recall the others. GH is extremely well thought of; I'll take another look. In the short time I've been playing with my 6300 I've become "hooked" on SSDR display and that of the Maestro. The Elecraft P3? Well, it's a cute add-on to the K3 but pales in functionality to FRS' offering.
At this point, it appears that whatever I do will be "fiddly" and a kludge. Likely I will simply give up the thought of remote operations. Just not enough time to make it work -- trying to adapt old technology to new uses.
Again -- thanks for your comments!
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Why give up so quickly? You already have the Flex and the VPN setup; why not try SSDR over VPN? You may find out that it works just fine for your needs. This of course won’t solve the full station control use case, but evaluating GHE is an option that is fully independent of the radio itself.0
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Easiest Raspberry Pi VPN I've ever setup.
http://www.pivpn.io/
I can setup a VPN on a Raspberry Pi 3 in less than 30 mins that works the first time. Just forward the correct port on your router and your done.
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Or you can use a Netgear R7000 access point at the remote location, it has a build-in VPN
server that you can then use with a free Open VPN client on your Windows or MAC laptop.
It all works out of the box.0 -
Another viable option is Ubiquity Edge Router X. For $50 you get an enterprise grade router, including full blown VPN.0
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I too played the RR and K3 route for Remote... TOTAL KLUDGE.
I am a computer nerd from way back and even I found it less than obvious to get working reliably albeit I have always been able to figure it out in each location if I put the effort into it..
I am not a CW guy but I do understand that RR works very well with CW. I can't comment on Flex.
RR Works Ok for the use case where you have a fixed remote and a fixed base but if you travel around the world like I do, it requires far too much extra **** to pack in my luggage. By contrast, for my use cases, all I need to do with Flex is schlep my iPhone or iPad and I am on the air from anywhere in the world... too easy.
Bottom Line; The K3 was NOT PURPOSE BUILT for Remote... when the 6000 line was. With SmartLink finally working, it totally blows away RR for ease of use and especially lack of additional **** to schlep.
Plus.. while I do like the spots on the display of the P3 with the K3 when you add NAP3, and for a while it was the major reason I liked the K3, The puny display on the P3 pales in comparison with the SSDR display and especially the spots of the display with SSDR for IOS which again is now the superior product.
BTW.. I am starting to wonder if our anonymous friend, Varistor has ever owned or even operated a Flex rig. If he had, I seriously doubt he would still be promoting ancient 20th century tech in the 21st century.
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The latest version of WriteLog's FlexRadio driver extends its support to SmartLink (http://writelog.com/category/flexradio-rig-driver.) The driver works with both the full and demo (http://writelog.com/demo) versions of WriteLog and has its own DAX implementation. An installation caveat is that installing SmartLink updates firewall settings appropriately for SmartSDR's use, but WriteLog's DAX additionally requires you to manually open a UDP port on the WriteLog end of the link to receive the RX and IQ channels. WriteLog does no magic with respect to bandwidth, either. The Flex audio channels are currently fixed at 48K samples per second and each sample is 4 bytes. In bits per second, that works out to 1.5M (i.e. 1.5 million bits per second) and there is overhead, too. Digital modes are only going to TX and RX well if you have that kind of bandwidth (which is the same constraint you'll have if you use a VPN instead of SmartLink.)
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