But where I showed 9db receive with the Sirio the PT-99 showed about 7-8. The Sirio is higher in the air though. The PT-99 is said to be 9.9dbi gain and able to take 2000 watts well so far I have put full power from my 500 watt amp into it and it is still going strong and the SWR doesn't change with or without my amp on! I feel this antenna is out performing my old A-99 and will continue to use it off and on until spring when it will be going to my cabin in Michigan to be mounted on a tower. Just thought I would share my findings. by the way the shop I got it from can be found on e bay it's abetterwaytobuy and the guy sells all kinds of electronic stuff. Thanks for reading and feel free to comment.