Javad TRIUMPH-LS, User Manual

Page: 19 / 168

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19
Introduction
With regard to the first item, I asked Javad how close is too
close when it comes to setting up the radio and here is his
response:
Hello Kelly,
There is no hard rule. The effect depends on the power of
the transmitter. Vertical or horizontal separation is the
same. The further you are the effect is less. For 1 watt
stay away a few feet. For 45 watt, stay away 20 feet. The
further the better.
Regards,
Javad
In regards to the second point, I asked Vladimir Zhukov
this question: “ What is the most practicable range of the
communication between the T2 and the HPT404BT (shown in
this example) afforded through Bluetooth ? “ and his answer:
Hi Kelly,
Up to 50 ft (~15 m) is the practicable range of the
communication between TRIUMPH-2 and HPT401BT/
HPT404BT.
Actually in the field they keep reliable connection up to
130 ft (~40 m).
So, > 130 ft is too far.
Regards,
Vlad
The last bit, the height or elevation of the antenna has
two things relevant for you to consider; 1) power and 2)
viewshed. If you have the base RTK kit that comes with (2)
6’ SAE extension cords and the battery kit power cable , this
comfortably adds another 5’ or so plus the 1’ pigtail. That’s
about a maximum of 18’ between the 12-volt battery and
the radio that’s permissible.
The viewshed may take some study beforehand. An
excellent program that may already be in the surveyor’s tool
kit (or should be) is Global Mapper which allows the user
to easily determine line of sight from your DTM, LiDAR, or
other elevation data; viewshed even has its own icon! (See
Appendix D for an example).
Finally, if you don’t have an FCC license for your radio,
you really need to read Mark Silver’s excellent article
that appeared in the January 2014 issue of The American
Surveyor : “ Sailing with the Pirate Surveyors ,” which you can
read here: http://www.amerisurv.com/PDF/TheAmericanSurveyor_
Silver-PirateSurveyors_Jan2014.pdf
Once the radio is all setup - and make sure the antenna is
connected to the radio - turn on the radio by plugging it
into the battery cable if you’re using the HPT404BT or press
the power button on the radio if you’re using the HPT401BT.
Refer to Appendix A (
p. 163
) for an explanation of the blinking
LED lights on the radio.