Ag Leader GeoSteer RTK 4xx MHz Installation Manual - Manual (Page 6)

6 GS-450 Radio Kit Installation Instructions
9. Attach the RF Radio NMO 10" cable assembly to the TNC
connector on the GS-450 radio.
Note: Hand tighten only. Do not over tighten.
10. Refer to the antenna sizing information in the next section
to determine if the antenna needs to be cut for the desired
operation frequency. If it does not, skip to step 14.
11. Loosen the two set screws at the base of the antenna using a
3/32" Allen wrench, and then remove the antenna from the
base
12. Measure antenna and make the proper length using the
diagram next to Table 1-2 as a guide. Cut the end using a
hacksaw.
13. Reinstall antenna and tighten set screws using 3/32" Allen
wrench.
14. Attach antenna to RF Radio NMO 10" cable assembly’s
threaded base.
Note: Hand tighten only. Do not over tighten.