Comet CA712-EFC - RF Choke necessary for GMRS or not?

[WSBV762]

Good day all!  I'm planning a base station antenna and have been pointed to the Comet antenna as my best choice.  Will be using LMR-400 coax with N-connectors.  50 feet of coax, maybe a little less.  Straight run from roof gable down to basement sill where coax will enter house and travel 2.5 feet to radio.  The only break in the run will be the gas lightning arrester attached to #6 copper ground to two ground rods 10 feet apart.  I'm looking for input from those who have this antenna as I am taking in as much info as possible before I install it.  I have attached here, the directions from Comet.  Anyone agree/disagree?  Thanks for your time.

Dan

WSBV762

[WRYZ926]

I did put one or two clamp of ferrite beads on all of my antennas (right at the base) to help with RFI. But I am running a CA-712EFC for GMRS, a Comet GP9 dual band and three different types of HF antennas. The antennas are between 25 and 50 foot apart. Now if the CA-712EFC is your only antenna then I would not worry about any type of choke since they are tuned and you are using good coax.

The loop showing the instructions is more for ease of maintenance and also a little stress relief on the antenna coax connector. The loop allows you to pull the antenna out of its mounting pipe if you ever need to remove the coax for any reason without having to cut any cable ties along the mast/tower.

I generally put one loop at the bottom of each antenna for this reason. Now I do have several wraps of coax along with clamp on ferrite beads on my HF antennas to help keep RF out of the shack or from interfering with my VHF/UHF/GMRS antenna coax cables since they are very close to each other where they enter my house.