- Nov 17, 2004
As a random project, I decided to modify a cheap/unused 144/430 MHz Nagoya NA-771 antenna I had lying around to work best on 700 MHz. I cut the element down to about 7.27" to perform ideally on 772 MHz (middle of the 700 MHz repeater output range) as per KD4SAI's Antenna Calculator. Question is, does this modification make sense technically? I'm not concerned about SWR since it'll be used to receive only. What's in the base of the antenna? Would it affect how I should have cut it? Was this the proper way to modify this antenna to work better on 700 MHz? Is it even logical to use this antenna for such a project? Thanks.