Spectra Precision ProMark 800 Reference Manual - Manual (Page 115)

103
Troubleshooting
• If this is not possible, move to higher ground or a
location where there is less obstruction.
• If, after moving, the rover radio begins to receive data
from the base, then the previous location is too
obstructed from the base. You will need to either raise
the base radio antenna higher, or move the base to a
location with less obstruction between the base and
rover radio antennas.
3. If the problem is not yet resolved, go to step 5.
Step 5. Are you
Within Range
Specifications of
Your Radio
System?
The range within which your radio system will function varies
greatly with the conditions under which the system is being
used. With clear line of sight between the base and rover
radio antennas, and no interference on the frequencies you
are working on, a UHF system can function with tens of miles
of separation. Unfortunately, these are ideal situations
seldom found. In most situations, the range of UHF radio will
be between 5 and 10 miles.
1. If you are not within range specifications, move within
range. Either move closer to the base, or move the base
closer to you. If the problem is not yet resolved, go to step
6.
2. If you are within range specifications, move closer to the
base to test the system. Since radio range is difficult to
predict due the varying effects of local conditions, try
moving closer to the base in an attempt to resolve the
problem.
If by moving closer you find that the rover radio begins to
receive data, the previous location is out-of-range of the
radio system. You will need to elevate the base radio
antenna or move the base to a location closer to you to
solve the problem. If the problem is not yet resolved, go to
step 6.
Step 6. Is the
Radio Being
Jammed?
When working with UHF radios, it is possible that the
frequency you are using is being shared with other people in
your vicinity. Traffic on this frequency can interfere with the
rover’s ability to receive data from the base. The effect may
be no reception of base data or intermittent reception of data.
Both are detrimental to proper operation of the RTK system.
Interference can be a problem with UHF radios.
There are two methods to determine if there is traffic on the
frequencies you wish to use. The best method is to acquire a
handheld scanner and to listen for traffic on the frequency
you plan to use. The second method is to observe the Data