Search found 85 matches

by ai4i
Mon Nov 24, 2008 7:37 pm
Forum: AM Radio
Topic: History question, re:DAs
Replies: 8
Views: 1826

Re: History question, re:DAs

A similar and related question might be, When did AM stations transition from horizontal to vertical polarity? Early stations liked to suspend wires between towers and I think the few cars of the day that had radios, placed horizontal antenna wires under the running boards. I would assume that trans...
by ai4i
Mon Nov 24, 2008 7:27 pm
Forum: AM Radio
Topic: WOKV
Replies: 7
Views: 1800

Re: WOKV

Can't say about today, but the office and studios used to be at the daytime transmitter site (50kw, non-da) in or near Green Cove Springs. When they found a place to put their night array, The jocks at "The Ape" could not get a clear enough signal to monitor and needed to backhaul with a TSL, probab...
by ai4i
Mon Nov 24, 2008 6:48 pm
Forum: FM Radio
Topic: Tough Songs To Process
Replies: 46
Views: 8024

Re:

Also how bout Roberta Flack - Killing me softly, with that heavy drum beat each time followed by the vocals.....nice holes in the audio. Roberta was and is a great artist for challenging the audio industry. Sung to the tune of, " The first time ever I saw your face ": The first time, ever I heard h...
by ai4i
Mon Nov 24, 2008 4:58 pm
Forum: FM Radio
Topic: Antenna Height vs. Power
Replies: 31
Views: 4361

Re: Antenna Height vs. Power

OK, I do not mean to hijack this thread, but the original issue seems to have been resolved. Can anyone tell me why, with all the grandfathered super power FM stations throughout the country especially in southern California, there is not a single one in the place where it all began, where Edwin Arm...
by ai4i
Thu Nov 20, 2008 8:31 pm
Forum: FM Radio
Topic: Antenna Height vs. Power
Replies: 31
Views: 4361

Re: Antenna Height vs. Power

ERP, its only 10dB more than a typical class C, and I am only talking theoretical.
It does not take any transmitters, combiners, feedline, or antennae to draw a chart
(although it might not hurt!).
by ai4i
Thu Nov 20, 2008 8:19 am
Forum: FM Radio
Topic: Antenna Height vs. Power
Replies: 31
Views: 4361

Re: Antenna Height vs. Power

I would love to see that graph extended two ways: 1) Keep traveling well beyond the 20dBu distance. 2) Add theoretical curves for more extreme examples, such as a megawatt station at treetop height and a one hundred watt station and a ten watt station several thousand feet HAAT, all with the same 60...
by ai4i
Tue Nov 18, 2008 2:44 pm
Forum: FM Radio
Topic: Antenna Height vs. Power
Replies: 31
Views: 4361

Re: Antenna Height vs. Power

Perhaps an uninformed question, but why then do so many stations attempt to grab that last available inch as high up as they can get away with, at the expense of ERP, when the chart shows that they are gaining nothing? Would I be correct in guessing that the purpose is to minimize multipathing? Agai...
by ai4i
Mon Nov 17, 2008 11:28 pm
Forum: FM Radio
Topic: Antenna Height vs. Power
Replies: 31
Views: 4361

Re: Antenna Height vs. Power

Curious! It seems counter-intuitive that higher station would not seriously dominate in that area between between the two radio horizons; it would certainly have a more consistent signal in that area. My feeling is that one should be much more concerned with quality of mobile reception (multi-path) ...
by ai4i
Sun Nov 16, 2008 6:38 pm
Forum: SW Radio
Topic: Have had the dream to put a SW on the air?
Replies: 12
Views: 5436

Re: Have had the dream to put a SW on the air?

Unless you really have something up your sleeves, not to mention pants with deep pockets, why not take this project on from a third world country? You could operate from a Caribbean island with a few thousand watts or even a few hundred watts in one of the tropical bands (60m, 90m, or 120m), and cov...
by ai4i
Sun Nov 16, 2008 5:49 pm
Forum: FM Radio
Topic: Antenna Height vs. Power
Replies: 31
Views: 4361

Re: Antenna Height vs. Power

Hello everyone, I just found this forum and am contributing my first opinion. I am generally a "high guy", but their are a few important variables to consider here. You had mentioned that the two sites are not at the same location. How the locations relate to the population distribution is a much mo...