is it dangerous in any way (thunder/lightning?) a.s.o.
That's a very interesting question. Hope, someone can answer it.
I did a quick search and found this here: ( I hope quoting the full text here is not against any laws, if yes, I'll remove it again)
The information provided about the transmitter might not be like the one KK uses!http://raptorresource.org/forum/index.php?topic=781.0;wap2
Why are you trapping and transmittering the eagles?
RRP decided to band the eaglets to help us determine where they go and whether or not they survive. Initially, we were only going to band one eagle. However, following today's success, we have decided to try to band more of them. We don't know whether we will end up banding and transmitting all of the eagles or not. We will see what happens in the weeks to come. Banding has yielded a great deal of valuable scientific information on bird migration, survivability, and reproductive success. Bands and transmitters help us protect important bird areas (witness Audubon's IBA program), identify threats, and determine the health of a species as a whole.
We did not make this decision lightly. We determined early on that we would not band the young in the nest, since we didn’t feel we could get to the nest without jeopardizing the eaglets. Once we decided to band and transmitter young after fledging, we involved an eagle biologist with years of experience in banding and trapping young and adult eagles. Bob researched banding very carefully, and was not able to find any evidence that banding affected the survivability or reproductive success of eagles – a finding supported by our own years of banding young falcons.
We understand that people are concerned about the eagles and our motivation for banding. However, at our core, we have always been about science, conservation, and education. Banding the eaglet will not harm it and will aid the service of all three areas.
What did you use to trap the eaglet?
We have been working with two traps. One is a large remote controlled bow nest and the other is called a Pandam trap. We caught the eaglet with the Pandam trap. The Pandam is a 36" diameter hoop made out of 5/8" steel. Large monofilament nooses were fixed around the circumference of the steel hoop. Two trout were placed in the center of the trap. When D1 finished eating a trout that Bob set out near the traps, she walked over to the Pandam and was immediately caught in a noose.Is the transmitter hurting the eaglet?
It is not. We have been monitoring the eaglet in person and via the satellite data. D1's behavior has not changed, and her parents and siblings are not treating her any differently. She is flying well and is still able to procure food. Here is a picture of D1 in the nest with her sibling. These two spent a great deal of time together prior to the transmitter, and that has not changed.Will the transmitter act as a lightning rod?
No. Here is why:
1. The transmitter does not provide a path to ground for lightning.
2. The transmitter does not change the eagle's electrical potential.Lightning or grounding rods are taller than the things they are sitting on and provide a very firm connection to ground. To flow, electricity has to have somwhere to come from, and somewhere to go to - hence ground. Unlike trees and buildings, the transmitter does not provide a path to ground along which electricity can flow.
What does the transmitter look like?
Check out this video to see it on D1: http://youtu.be/fJ7CrREEf0A
How much does the transmitter weigh?
The transmitter weighs 2 ounces. The eagles total weight is 14 pounds, so the transmitter is .8% of her total body weight.
Where can I view D1's Travels?
Check out http://www.raptorresource.org/maps/latest.php
for the latest report on D1.
Will the transmitter fall off?
The transmitter is not designed to fall off. Eagles do sometimes manage to remove their transmitters, so we will not say that it will never fall off. However, it is not designed to.
How is the transmitter powered?
The transmitter is powered via a small battery and a solar cell. The solar cell charges the battery, which keeps the data system transmitting for longer than it would via battery alone.
Who made the transmitter?
The transmitter is an Argos transmitter. Argos specializes in environmental and wildlife tracking and monitoring. To learn more, visit their website at http://www.argos-system.org
How does the transmitter work?
The transmitter is programmed to send signals at periodic intervals to NOAA and Met-Op satellites flying in polar orbits. The satellites pick up the signals and store them on-board or relay them in real-time back to earth. On average, the platform or transmitter is visible to the satellite for ten minutes. Depending on how the transmitter is programmed and the quality of the connection, the satellite might receive anywhere from 1 to more than 4 messages from the transmitter. It takes approximately 100 minutes for the satellite to revolved around the earth.Receiving stations relay data from satellites to processing centers.A processing center collects and processes the data before sending it to us.
What is a 'confidence number' - ie, why are some fixes better than others?
A fix (location) is classified as one of seven categories. The categories are classified according to estimated error and the number of messages received during a satellite pass.
LC Estimated Error No. of messages received
3 <250m 4 or more
2 250m – 500m 4 or more
1 500m – 1500m 4 or more
0 >1500m 4 or more
A No accuracy estimation 3
B No accuracy estimation 1 or 2
Z Invalid location