My issue is that since i dont have an SWR meter there is no way that i can tune the antenna properly. I need a design that given a specific center freq will be close enough until February when i return to work from vacation with my SWR Meter that i can go back and re tune the antennas.
Normally I would have the tools however there are strict import/export requirements. If i bring my expensive tools they will never allow me to take it home again.
Thanks in advance.
Quick and dirty is a quarter wave vertical but it needs to be mounted on the fender or roof to work. You don't need a matching section and they're quite forgiving at VHF in regards to SWR. I use a 1/4 wave on my car and I can use it on the 2m amateur band at 145MHz where it is tuned for and I also use it to access a commercial repeater on 159MHz and the SWR is still below the critical 2.5:1 at 159MHz. Military repeaters tend to work over a wider split frequency than amateur ones.
Remember when cutting the antenna to length that the bit that screws into the antenna socket is also part of the radiating element.
To calculate the length of a quarter wave antenna in metres it is 75/Frequency in MHz so for 180MHz it would be 75/180= 0.42m or 42cm.