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How does this seem possible?
- Thread starter jras20
- Start date
Well, the elevation of Austin and the surrounding area is more than 500 ft, much higher than the coastal plain of Texas.
Add to that the height of the average radio tower and then throw in some tropospheric enhancement (not the same as tropospheric ducting) and you should be able to hear Corpus Christi FM stations in Austin.
FM always goes beyond line of sight.
Add to that the height of the average radio tower and then throw in some tropospheric enhancement (not the same as tropospheric ducting) and you should be able to hear Corpus Christi FM stations in Austin.
FM always goes beyond line of sight.
In new England a lot pf places receive 94.9 Mt Wash NH from 150 mi away. But under tropo lite conditions, the signal is almost local.
But translators like the one in Worc, MA are taking chunks out of the fringe coverage area.
But FM from 150 mi on a regular basis is pretty cool jras. I remember driving thru Kansas years ago with a special FM antenna on my brothel on wheels (a VW Bus) and was surprised to get a lot of stations in stereo up to 120 mi.
But translators like the one in Worc, MA are taking chunks out of the fringe coverage area.
But FM from 150 mi on a regular basis is pretty cool jras. I remember driving thru Kansas years ago with a special FM antenna on my brothel on wheels (a VW Bus) and was surprised to get a lot of stations in stereo up to 120 mi.
So would this "tropospheric enhancement" explain why I fairly consistently receive103.3 KVYB Santa Barbara, CA, from 212 miles away, just south of El Cajon, CA (about 500-550 ft elevation, on the south side of a hill that peaks about 900 ft or so 0.8mi NW of me) ? Or does the saltwater over much of that distance have anything to do with it?
It plays a role, for sure. But consider this, too: all that saltwater between you and KVYB also means that there's nothing else on 103.3 between you and KVYB to stop the signal from getting to you. On a very, very open channel, you can hear very, very weak signals that wouldn't exist listenably on a more crowded frequency.
In the late 1980s, I lived in a valley some 30 miles east of Bishop, California, up in the Sierras. The FM dial was nearly empty there at the time, and as a result I was able to get reliable daily reception of some signals I never "should" have been able to get there. On 90.1, for instance, I had regular usable reception of KCBX from San Luis Obispo, at least 200 miles and two mountain ranges away. That was almost certainly "knife-edge" reception, with the signal bouncing from mountaintop to mountaintop, and it probably exists in a lot of places...but in most places, the weak signal coming in from knife-edge is wiped out by stronger co-channel signals closer in. I was lucky enough to be in a spot with nothing much local to get in the way.
In the late 1980s, I lived in a valley some 30 miles east of Bishop, California, up in the Sierras. The FM dial was nearly empty there at the time, and as a result I was able to get reliable daily reception of some signals I never "should" have been able to get there. On 90.1, for instance, I had regular usable reception of KCBX from San Luis Obispo, at least 200 miles and two mountain ranges away. That was almost certainly "knife-edge" reception, with the signal bouncing from mountaintop to mountaintop, and it probably exists in a lot of places...but in most places, the weak signal coming in from knife-edge is wiped out by stronger co-channel signals closer in. I was lucky enough to be in a spot with nothing much local to get in the way.
Ahh. I do remember a co-channel in Temecula wreaking havoc with them last time I went to the top of the hill to check reception there.
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