trimming larson whip?

[jjernigan1]

just bought larsen nmo150 vhf antenna. chart says to trim to 47 3/8" for my frequency. is this measurement for what is actually visible or does it include the little bit that goes inside the base . i am not using a spring!!
thanks in advance

 

[Captain Kilowatt]

The measurement is taken on the part that is visible out of the ferrule that contains the set screw. Don't cut it too short as you may have to adjust it a bit after. You do have a VHF SWR meter don't you?

 

[kd-5-bgt]

Greetings !! I have that very antenna on my 2 meter.....my antenna is trimmed to 47 1/2 inches (from the top of the set screw ferrule)

And 146 mhz is where mine is cut to

Good solid antenna.I really like mine. :laugh:

 

[N0NB]

I always cut the whip to the measured length and stick it in the ferrule. I've not had one be too short yet.