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Well; lets see...


If you are using decent 'RG-8' coax - like Belden 8237 (it helps to specify; as ALL RG-8 is NOT the same quality.  eg: Radio Shack RG-8 is HORRIBLE and Belden 9913Flex is xlnt - both are RG-8), you will have a 4 watt loss at the antenna with a 100 ft length of coax.  The reason I got 4 watts of loss is because I put in the value of power of your PEP - which should be swinging around 18 watts PEP - not your deadkey power.  A Grant XL is equivalent to the Cobra 148GTL - in that it has a single-final output with the same output device.


However, all of this doesn't add up to a spit in the river - as this isn't the problem.  Clearly, there IS something wrong with the Grant XL.  All other things being equal; it should do close to the performance of the other radio - if not the same or better.  At 6-8 miles away - he should be hearing you fine with either radio.  Is there anyone close by you that can check your radio out?  Maybe the final device is having a problem?  That would be my guess.


Either that - or your 'friend' is jerking you around.  BTW - is your handle 'The Jerk'?  Maybe he is playing you.  With a handle like that - you should encounter SOME goofing around.  OK, OK - let's say he isn't jerking you around (just kidding around - too!).  Seriously; there MUST be something wrong with that radio.  There is no other explination that I can see.  Unless you haven't said anything else that would play in here...