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Posted: Tue Jan 19, 2016 3:06 am
Anyone have any success connecting these units to mobile radios?
Posted: Tue Jan 19, 2016 7:52 am
Looks simple enough. Are you talking about the physical connection?
Posted: Thu Jan 28, 2016 2:39 pm
The physical connection should be easy.
The problem everyone seems to have is getting two of these to "communicate" with each other.
I have been working on a pair of them.
I can get into the Web style setup screens, but no amount of fussing around with settings seems to get them to work with each other.
Anybody have any helpful hints on these?
Posted: Fri Jan 29, 2016 9:33 am
Are they SIP based? Do you need a PBX invetween the units? Are you trough a VPN / LAN or opening SIP and RTP ports ?
Posted: Thu Feb 04, 2016 6:51 am
They claim to be SIP based, but they also claim that they can be connected peer to peer.
I am working on them on my bench, thru a HUB, thru a SWITCH, and thru a crossover cable.
Just connecting the two ROiP 102's and noting else.
Can connect to them on their PC port, and change settings, etc.
But NO data ever comes out of the WLAN port.
I am feeding audio into them with my TIMS, and taking audio out of the other end also to my TIMS.
Using a toggle switch to simulate COR, and DVM to "read" the PTT out.
NOTHING happens, with hundreds of attempts, changing settings.
Even got an Email from DBLTEK support with an attachment of what the settings "should be" for peer to peer.
Better "chinglish" but still worthless.
Posted: Thu Feb 04, 2016 9:11 am
Wish I had a couple of these to play with, I love this sort of thing. How much did your pair run you?
Posted: Thu Feb 04, 2016 11:46 am
Another guy actually bought them, but I think they were something like $130 each.
Posted: Mon Apr 18, 2016 5:23 pm
Did you ever get them to work?
Posted: Thu Apr 21, 2016 6:49 am
Nor have I found anyone else that says they have them working.
There is a guy that is working on some, he thinks he has them passing audio, but no signalling.
Will update when we get final result.
So far does NOT look promising at all.
Posted: Sat Apr 22, 2017 1:27 pm
Does DBLTek offer any assistance on this?
I like the idea of combining 2 systems via IP.
Posted: Mon Apr 24, 2017 12:26 pm
DBLTEK help is worthless in my opinion.
Just my opinion here, but it appears to me that their product and "help" borders on fraud.
We recently did get a pair of them to work.
Not because of any help by DBLTEK, but by persistence and a REALLY good network guy. (good friend of mine).
The first clue for any of you that have these is that if you bought the little "breakout" board they supply with the two POTS and screw terminals is that the cable they send with it WILL NEVER WORK.
It has one end crimped on backwards, so instead of being a straight thru cable it is a "flipped" cable.
So, the connections coming out of the ROIP to the little board are not connected to where they need to be.
The product CAN NOT WORK AS DELIVERED.
If you trace those out, you can see if you cut the RJ connector off and crimp a new one on "upside down" then you have a chance of making them work.
Running a test on these now, and they do seem to work OK.
Audio is not great, but better than most EchoLink setups I hear.
I really do like the concept of being able to put one of these at each end of an IP link, and just connect your favorite radios and they will "link" over IP.
I plan to connect an RLC-4 repeater controller at one end and "remote" a pair of GM300's ( Like a GR 300) at the other end just to test out how well these might work.
Will post the settings needed to get these to talk to each other soon.
Just busy with lots of stuff like most of the folks on here.
Posted: Thu Apr 27, 2017 5:10 am
Thank you Steve for the reply and the results you achieved.
We have 2 areas of operation, one in Central IL and another in the Gurney IL area, we run a single user digital repeater (P25) system in CI and looking at using a community repeater up north, bonding them together would help things at times.
So it looks like it would function, but would require some re-engineering. Sounds like they used a CrossOver cable or it needs a crossover cable? These are RJ45's I assume?
Again great write up. Bookmarking as a possible project.
Posted: Thu Apr 27, 2017 11:48 am
If you are thinking of linking P25 with these, that won't work.
If you plan to use these things you would have to run mixed mode on your P25 and do analog to analog.
And I have a pair of these ROIP-102's running right now with "duplex" radios at each end.
The 102's are working OK, but the audio is not great. Good enuf, for the testing I want to do, but for a permanent setup, I would want the match the audio better.
Way too much treble. Probably just a case of impedance mismatch going to and from the ROIPs to the GM300's I am testing with.
The other thing I am seeing is that these only do one direction at a time.
So, it *MIGHT* be that they will only be single direction.
For example a simplex or a half-duplex radio at each end (think subscriber radio) works fine but you have to wait for the "far" end to stop sending before you can send from this end.
Whichever "end" gets the COR/PTT function holds that until dropout.
Then the other end can capture COR/PTT to send back.
That is the way it is looking right now.
Posted: Thu Apr 27, 2017 11:55 am
Forgot to mention, the current testing is over IP microwave link monitoring a busy VHF repeater.
So VHF receiver into the ROIP-102, across IP microwave to the second RIOP-102 out to a UHF GM300 transmitter.
Going "back the other way" is another UHF GM300 across the ROIPs and IP to a third UHF GM300.
Doing this testing on ham bands, and using my UHF coordinated freqs to make sure I can't lock up somebody's system if anything goes goofy.
Next part of the test will be inserting an RLC-4 repeater controller.
Just trying to prove out whether or not these are worth fooling with.
Posted: Sun May 07, 2017 12:23 pm
Is anyone interested in the settings we used to get these working?
Honestly, they would not be bad for simple linking. Not great, but not terrible either.
My opinion, but they would not be worth the retail price to me.
But, I would use them for some simple linking of secondary and experimental stuff if I could find them at more like $20 each.