Nate’s dream radio

Nate The Surveyor

Well-Known Member
35 watt. With a 3 position switch on the side for low power, medium, and high. It has ability to receive on one channel, and transmit on another, simultaneously. It has Bluetooth and mi fi.
it also can receive cellular correction, and transmit on radio. This way, it can be set on a hill, and receive through cell modem, and broadcast via uhf.
or, it can receive through uhf, and transmit through cell modem. This would allow it to be a repeater, this would be a “full schmeer” radio. Simultaneous receive, and transmit may require two antenna ports. And a directional antenna.
I know it’s a pipe dream. But, I do believe other mfr’s would buy it. I know it would be hard for me to resist. It should be sold with a draft tube, ie, a rainproof housing, that lets it be set up long term. It would be worth 5k.
Nate
 

Nate The Surveyor

Well-Known Member
And an app on cell phone, to reconfigure remotely. Can go to low power, or reboot it remotely. This would allow all kinds of possibilities.
we are communication dependent. Build a solution.
 

Shawn Billings

Shawn Billings
5PLS
Matt is correct. The request for duplex is the only thing I see lacking in the JL radio line (and the request for an external switch for power output).

So I think it's fair to say that you are looking for a JL with Duplex.
 

Nate The Surveyor

Well-Known Member
35 watt duplex. If I could buy one.

I'm winding up spending 2250 for full cell modem for the first year. Plus 500 a year thereafter.
I have a 4 watt radio, and a 35 watt radio. I'd really prefer to use the 35 on base, and 4 watt repeater occasionally. If the 4 watt were duplex, then I think I'd skip the cell modem entirely.
Another question, if I buy the duplex (only one watt) radio, is it ready to run as a repeater?
Another way to say it is I think I'd druther have duplex repeater, than cell modem.
N
 

Nate The Surveyor

Well-Known Member
My issue is that cell does not work around here, except on hill tops, if you turn your head right. If I had a 35 watt duplex, I'd really like it.
Now I know cell coverage is improving. But I don't want to get boxed in.
How is 2 second repeat rate coming?
I remember Mr Javad wanted low/ no signal latency. I can see trajectory being affected by latency, in theory.
My driving impotice here is the overall integrity of my work. The faster things work, the more data I get, in a given time frame.
Sometimes it is an ethical consideration to stay on point another Time period, for an extra shot for confirmation. Or, a return trip.
It seems some surveyors are content with a foot or two here and there, of error. I'm not like that.
It's the desire for the very best survey I can make, that makes me drive for the very best equipment, and this makes me entertain this line of thinking. Sorry for being borderline abusive, of you support folks, to get what is best! Grin.
I can see eventually setting base on hill. Going through cell modem. Setting 35 watt duplex on Hill 3 miles from base. Collecting cell data, and broadcasting into "valley of no cell".
Thank you
Nate
 

Artur Petrosyan

Member
JAVAD GNSS
Dear Nate, thank you for presenting your idea about full duplex repeater!
What about Half duplex repeater with 2 second repeat rate? Will this fit your application?
About broadcasting cell corrections into "valley of no cell": it is a feature available in HPT435BT JL now. You can broadcast data received from cell modem by 35W UHF channel.
 

Nate The Surveyor

Well-Known Member
Well, unfortunately, I'm endeavoring to follow Mr Javad's lead here. I'm assuming he had more knowledge than I have. And, he has left the building. So, I don't honestly know if 2 second repeat rate would compare favorably with full duplex.
I'm assuming that 2 second rate would mean that coms are just talking in longer sentences. Each packet is 1 second long, but I'm only acquiring every other one, so 1/2 the data is actually being used.
Other users are loving the cell modem, as they are getting full data through. So, you ask me, "can you get by on 1/2 the data", and I don't know what effect it would have. But, a duplex radio could possibly send full data.
So, it's logical to say full duplex. Eventually we will have MORE data, as more satellites go up. So. I'm suggesting that full duplex could solve our current problems, and some future problems.
I have not added spread spectrum to this mix, but would that help anything?
Nate
 

Shawn Billings

Shawn Billings
5PLS
I don't know if we know for sure yet, but Upsampling may well work for 2 second rate just as well as 1 second. You'll recall that when we first released Beastmode RTK that we required sending corrections at 5Hz (0.2 second rate). Then Javad developed Upsampling which allowed for transmitting at 1 second but the LS could still treat the corrections as if they were 5Hz. From conversations we've had with the developers some time back, I believe Upsampling will likely work for up to 3 seconds (but it's been a while since we discussed it and my memory could be wrong). If so, then I suspect a 2 second rate would sacrifice nothing to a 1 second rate.
 

Nate The Surveyor

Well-Known Member
2 second rate may work.... As well as 1 second. Today.
What about tomorrow? When another 10 satellites are added to the mix? And each of these satellites generates 3 signals apiece? (Or more).
I'm suggesting duplex may become necessary, even if it may be day after tomorrow. (Or we may become cell modem only.)
A duplex radio may wind up running at the 2 second rate...... With more data to carry.
I'm an end user. Who wants his gear to work well. Not a developer, who knows what it may take to do these things.
Not meaning to get out of my slot....or above my position.
I'm yours truly, the idea manufacturer!
Nate
 
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