Beast Mode vs. Data Upsampling with UHF coms

Joe Paulin

Well-Known Member
I use a T2 base receiver/1 watt uhf radio along with my LS rover for 90% of my surveying needs. When Beast Mode came out a while ago I changed over to 5Hz broadcast rate and D16QAM modulation on the radio to take advantage of this and of course it has been great. As noted in the quick start guide, this reduces the radio range somewhat but the 5hz advantage outweighs the reduced range drawback for me.

With my 1 watt radio, I need all the range that the radio can give me, but I don't want to sacrifice Beast mode. My question is this: Is using data upsampling with the uhf radio broadcasting at 1hz JUST AS GOOD as if the radio was truly broadcasting at 5 hz? I don't have an issue with battery life broadcasting at 5hz, but if I can switch back to broadcasting at 1 hz using the D8PSK modulation, my understanding is that I would get better radio range with these settings.

Once again, I would like to switch back to 1hz for better radio range, but I don't want to compromise the Beast mode performance.

Thoughts, comments?

Thanks!
 

Nate The Surveyor

Well-Known Member
Well, I'm on Upsampling. Tx @ 1 hz. From true full 5hz radio mode. My general impression is that although it's a little different, that either very little time is lost, or none is lost. Also, it seems that time to first click is slightly longer, that instead of one click, it's a little series of 2 or 3 clicks.
Another thing is with 1 second rate, we went all the way back to DQPSK. This uses a different baud rate, that gives better range.

Now, my qustion. Can we use DQPSK, on base, and repeater, IF we are using 2 frequencies, one for the repeater to rx on, and another to tx on?
Btw, you can change to 1hz, with upsampling, and see what you think, as far as performance is concerned. And you can switch back. The whole Javad GNSS program is solidly based on user feedback, and they actually want, and listen to our feedback. This has really made me a Javad fan. I don't really want to go surveying without it.
SPOILED Nate :)
 

Nate The Surveyor

Well-Known Member
"From true full 5hz radio mode." means is I WAS on 5 hz mode, then went to 1hz with upsampling. So, I've been on both. But, with a 35 watt radio.
 

Shawn Billings

Shawn Billings
5PLS
Testing done by the PLS Team indicates that UpSampling is as good as Beast Mode with no noticeable difference in performance.
 

Joe Paulin

Well-Known Member
Thanks for the replies, I will switch over and try it out. Which modulation should I use for best performance when broadcasting at 1hz?
 
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