I'm somewhat surprised that you jumped to the conclusion that your meter was suspect without carrying out any further tests. You didn't say what power transmitter you were using, but I would certainly have made up a dummy load of a couple of 100ohm resistors in parallel and a suitable connector to check what the meter said, as you said you don't have a dummy load. For VHF work you need a proper RF screened load - if I had my way, every VSWR meter sold would have one in the box! Measuring VSWR of an antenna down a length of coax is always doubtful, so you should put your dummy load at the far end to confirm that the cable is good. Then you put you meter up at the antenna with a very short length of coax and see what the real answer is up there.
As an instructor of mine said many moons ago said "If you don't get the results you are expecting, suspect the test method, not the device being tested."