No Propagation = Cone of Silence... Andrew MacAllister | T +1 713 827 4334 From: BVARC [mailto:[email protected]] On Behalf Of Rick Hiller via BVARC Sent: Tuesday, April 14, 2015 1:31 PM To: 'K5HM'; 'BRAZOS VALLEY AMATEUR RADIO CLUB' Subject: Re: [BVARC] Psychosomatic / Technical Question
You have a 3rd factor that is out of the control of the Amateur......Propagation.......you can have 10K ERP watts at 250 feet and still not get through. But with all 3 factors working together you will actually have a Cornucopia of Satisfaction From: BVARC [mailto:[email protected]] On Behalf Of K5HM via BVARC Sent: Tuesday, April 14, 2015 8:51 AM To: [email protected]<mailto:[email protected]>; 'BRAZOS VALLEY AMATEUR RADIO CLUB' Subject: Re: [BVARC] Psychosomatic / Technical Question Does it really matter? If a person believes that a FOUR times increase in power makes a difference then, it makes a difference. This is the doctrine of "perceived value". It has been used by every salesman since the invention of the wheel. Amplifier manufacturers do not talk about the measly one S-unit increase or a tiny 6 DB increase? No, they talk about hundreds of watts, thousands of watts. Bigger is better, no matter what. Remember, K5HM's Theorem of Ham Radio Satisfaction. There only two important measurements. Antenna height in feet and Power in watts. If you have plenty of both, all other measurements take care of themselves. See attached chart. You want to be in the Cone of Satisfaction. 73, Ron, K5HM [email protected]<mailto:[email protected]> www.qrz.com/db/k5hm<http://www.qrz.com/db/k5hm> [ARRL Logo][logo (2)][smaller Prize] Excelsior! From: BVARC [mailto:[email protected]] On Behalf Of Rick Hiller via BVARC Sent: Tuesday, April 14, 2015 7:51 AM To: 'BRAZOS VALLEY AMATEUR RADIO CLUB' Subject: Re: [BVARC] Psychosomatic / Technical Question All, The responses have been fantastic...from full technical diatribes to psycho-analysis "you're just hearing things"..... ;-) I sincerely appreciate all that commented. I will put together a comprehensive e-mail outlining all that was said, so we will have that on record. You have answered my question from all angles and provided me with 1) the technical fodder for the slides in my SWR talk; 2) a definite change in my amplifier set-up; and 3) the possibility of a new presentation -- "Tube-type Linear Amplifiers - Good Reasons to Overdrive Them" or "When Compression Sets In - Take a Powder" How about "Feeling Compressed? We hear Ya!" TNX ES 73....Rick - W5RH ====================================== I am working on a presentation about losses within the antenna system and have come across a question that I have always wanted to ask. -- Why does going from 100 watts (barefoot) to 400 watts (adding a linear) "seem" to make such a big difference in on air performance/audio punch etc.? My observations -- Even though it is only x 4 -- 6dB - one S-unit -- it "sounds" like, most times, a larger jump. Sometimes the receiver indicates a larger jump too, S-meter wise, which points to a receive chain performance issue - non linear AGC gain response. I am guessing here. Anyone care to voice some insight? Thanks and 73.....Rick - W5RH [cid:[email protected]]
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