WRHS218 Posted September 10 Report Share Posted September 10 On 9/7/2024 at 7:33 PM, WRUU653 said: I’ve just accepted it’s PFM That is certainly the easiest way to explain some things. I was in a school in the military and at one point, after trying to explain a concept to a class of young men just out of boot camp for way too long, the instructor told us to place our left hand over our name tape and raise our right hand and repeat "I believe". After I had been in the fleet for a while I learned the correct term for "accepting it and moving on" that was PFM. I still believe... WRUU653 and SteveShannon 2 Quote Link to comment Share on other sites More sharing options...
LeoG Posted September 10 Author Report Share Posted September 10 Trust the science... marcspaz and WRWE456 1 1 Quote Link to comment Share on other sites More sharing options...
WRYZ926 Posted September 10 Report Share Posted September 10 I've done enough tests with mobile setups and base station setups running at 5 wats, 10 watts, 25 watt and 50 watts. Going from 5 watts to 50 watts will definitely make a difference. But going from 25 watts to 50 watts will not make much of a difference at all. If fact most people will never be able to tell the difference between 35 watts and 50 watts as FARZ go or what they actually hear. Where 50 watts generally helps is if you have to push through an obstacle such as a bunch of trees our bounce signals off of buildings, etc. Good coax and a good antenna with a clear line of sight makes as much if not more of a difference than power output alone. SteveShannon, AdmiralCochrane and WRUU653 3 Quote Link to comment Share on other sites More sharing options...
SteveShannon Posted September 10 Report Share Posted September 10 44 minutes ago, LeoG said: Trust the science... Smart people do. Smart people also understand that there’s a lot more to the science than meets the eye, that limited data and shallow assumptions are not the same as science, and that scientists must always be willing to admit that they don’t know what they don’t know. WRUU653, WRYZ926, AdmiralCochrane and 2 others 5 Quote Link to comment Share on other sites More sharing options...
LeoG Posted September 10 Author Report Share Posted September 10 1 hour ago, WRYZ926 said: I've done enough tests with mobile setups and base station setups running at 5 wats, 10 watts, 25 watt and 50 watts. Going from 5 watts to 50 watts will definitely make a difference. But going from 25 watts to 50 watts will not make much of a difference at all. If fact most people will never be able to tell the difference between 35 watts and 50 watts as FARZ go or what they actually hear. Where 50 watts generally helps is if you have to push through an obstacle such as a bunch of trees our bounce signals off of buildings, etc. Good coax and a good antenna with a clear line of sight makes as much if not more of a difference than power output alone. "S" units, 6dB more/gain/increase. Going from 5 watts to 50 watts is about 8dB, so it a large gain in power. Quote Link to comment Share on other sites More sharing options...
WRYZ926 Posted September 10 Report Share Posted September 10 6 minutes ago, LeoG said: "S" units, 6dB more/gain/increase. Going from 5 watts to 50 watts is about 8dB, so it a large gain in power. Which is why one WILL notice a difference going from 5 watts to 50 watts. But there is not much of a noticeable difference between 25 watts and 50 watts. Quote Link to comment Share on other sites More sharing options...
LeoG Posted September 10 Author Report Share Posted September 10 Actually what I meant to say is 7.8 watts to 50 watts is about 8dB. 5 to 50 is 10dB, yes? Quote Link to comment Share on other sites More sharing options...
dosw Posted September 10 Report Share Posted September 10 33 minutes ago, LeoG said: Actually what I meant to say is 7.8 watts to 50 watts is about 8dB. 5 to 50 is 10dB, yes? dB difference = 10*log(p2/p1) 10*log(50/7.8) = 8.07dB 10*log(50/5) = 10dB At least that's how I understand it. And every 3dBi is a doubling. Lscott and SteveShannon 2 Quote Link to comment Share on other sites More sharing options...
LeeBo Posted September 12 Report Share Posted September 12 On 9/10/2024 at 11:07 AM, SteveShannon said: Maybe you’re not really seeing the repeaters that you think you’re seeing. That thought did cross my mind. I'll be back there in November at which time I'm taking a road trip to confirm. SteveShannon and WRXB215 2 Quote Link to comment Share on other sites More sharing options...
LeeBo Posted September 12 Report Share Posted September 12 On 9/10/2024 at 11:42 AM, WRXR255 said: Obi Wan Steve: "These are not the towers your looking for, move along" Those are not the towers I'm looking for. SteveShannon, WRXR255 and WRXB215 1 2 Quote Link to comment Share on other sites More sharing options...
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