Remember, ideally your antenna will be a full wave long. Of course that usually isnt practical, so they are often made at LEAST as a half wave, or quarter wave long. a cheat sheet I found quickly googling.
And figure out what bands you expect to use first. No sense buying/building for something that wont be used.
And an auto tuner can help with some of the impedance matching.
Ham Radio HF/VHF Antenna Lengths
www.hamuniverse.com
And figure out what bands you expect to use first. No sense buying/building for something that wont be used.
And an auto tuner can help with some of the impedance matching.