Rain fade and attenuation due to foliage are real, but are much more of a problem in the GHz region than around 650 MHz. I believe he said the channels were all digital, so if he has a marginal signal on a good day, maybe just a little bit more attenuation is enough to trip the all-or-nothing barrier.
Reminds me of the time I went up a tuna boat mast to see why the VHF radio was only receiving signals from the boat tied up next to it. When I looked for the antenna, it wasn't even there. I guess a bird had hit it and it was weakened from the sun and sheared off.
Look before you leap. I could have spent hours checking out the radio when it was nothing more than the antenna- or lack thereof...
Darned if I know. Its effect seems to be worse on one channel than the other, but all are in the UHF 40-50 range and all digital. I have suspected that translator antenna might be flaky, but I'd have thought it would have been fixed if it were a problem. It used to be at a different location but I moved it since it looked into two trees in my yard on the other side of the house.
This is a retirement town though, so maybe they just think there is something wrong with their setup, or they are working with a better antenna than mine: a corner reflector that fell off the house in the a windstorm, then had a tree limb hit it when the neighbor was taking down his tree! I am afraid the mast still has a bit of a up tilt.
Our signals come from a 200 watt translator several miles away. When it rains, the signals deteriorate because of a large tree across the street in the line of sight of the antenna.
Since I get nervous on a step ladder, I am glad there are people like the author willing to do the high wire stuff. Oh yeah, we just had some trees trimmed around our lake house and imagine or surprise when we now have 7 over the air channels instead of 2.
I have not climbed the big towers. I've been up towers to the 300 foot level.
I usually had the luxury of choosing when to climb and I usually take a water bottle and a snack with me.
You never know what you'll find when you climb, so stay in shape and be prepared to get off the ladder.
I've been on the side of the tower on step bolts too.
That was 20 years ago. I don't think I can do so well today...
Jake Brodsky
ab3a- I just could_not_climb a tower, young or old. Kudos to those who do, it is necessary. I watched a video of a tower climb on YouTube; amazing how much sweating vertigo induces.
streetrodder- I once worked on a design for an island to island radio system in the Caribbean, pretty hard to design for Cat 4/5 hurricane winds, just like tornado alley.
For 3D printing to make the jump from rapid prototyping to manufacturing, engineers will need to find easier ways to move products from their CAD screens to their printers.
Gigabit and PoE are two networking technologies moving ahead in tandem as industrial users power remote Ethernet devices such as IP security cameras at 1,000 Mbps over existing CAT5 cable.
New versions of BASF's Ecovio line are both compostable and designed for either injection molding or thermoforming. These combinations are becoming more common for the single-use bioplastics used in food service and food packaging applications, but are still not widely available.
From Dell / Intel® New Paradigms in Design Work Scott Hamilton, vertical market strategist for Dell Precision workstations, 5/2/2013 5
Early in my career, I worked as a draftsman and remember the days of drawing on vellum with numbered pencils and Mylar with plastic lead. This was a fun experience in the sense that I ...
I've been using workstations for more than 10 years and love finding ways to get more performance from my system. With demanding professional applications that require more power each ...
A lasting memory from my first job as an engineer in an auto assembly plant is standing on hard concrete at six in the morning, vending-machine coffee clutched in hand, listening to ...
For industrial control applications, or even a simple assembly line, that machine can go almost 24/7 without a break. But what happens when the task is a little more complex? That’s where the “smart” machine would come in. The smart machine is one that has some simple (or complex in some cases) processing capability to be able to adapt to changing conditions. Such machines are suited for a host of applications, including automotive, aerospace, defense, medical, computers and electronics, telecommunications, consumer goods, and so on. This radio show will show what’s possible with smart machines, and what tradeoffs need to be made to implement such a solution.
To save this item to your list of favorite Design News content so you can find it later in your Profile page, click the "Save It" button next to the item.
If you found this interesting or useful, please use the links to the services below to share it with other readers. You will need a free account with each service to share an item via that service.
Tweet This
1 
