Originally Posted by Captin_Kirk
I just replaced the antenna wire in my mast for a new line. This is the first year that I will use this boat and the old VHF
was an original by the looks of it (1972) I put in a new dcs radio so thought the cable should go. My problem is when I hook up the SWR meter to test I do not get any movement on the needle. I am wondering if this is a sign that the swr is bad or if the antenna is no good.
I am trying to figure out if I need to replace the antenna or if the one that came with the boat is still good. It is a shakespear antenna and looks OK, but I would rather figure this out now, while the mast is lying on the ground. The boat goes in the water
on Friday so I really would like to get this sorted out.
Oh and yes the swr is one meant for ham radio.
Depending on which SWR meter you have and its designed range, it might not yield accurate results at VHF frequencies. However, you'd certainly see some meter movement.
My advice: check all your connections VERY VERY carefully. With the coax disconnected
at both ends, see if there's a short between the center conductor and the braid. If not, check the continuity of both the center conductor and the braid, to be sure there's no break. BTW, what coax are you using? RG-8X is acceptable, RG-213 or 214 or LMR400 are much better. But, you've gotta be absolutely sure the PL-259 connectors are installed on the coax correctly.
RE: the antenna, since this is a relatively small expense, I'd install a new one. Get a simple 3db gain marine
VHF antenna. The cost is so little, it's not worth fooling around, particularly since your mast is down and you have easy access.