# Re: Streamer Vs. Strike Distance Factor.

```Original poster: Vardan <vardan01@xxxxxxxxxxxxxxxxxxxxxxx>

Hi,

```
```Hi All,

elevation and temperature to the streamer length stuff...   So us
anymore >:o))
```
```
I can't help wondering where this alleged streamer length advantage
comes from.
```
```
```
It comes from the math and the "scientific side". I simplify the equations to just "linear" functions derived from things like this:
```

For terrestrial stuff, air pressure and temperature are just "line" functions.

```
```When I designed coils for Dream Park Corp (which later
morphed into "DiaboliCo" - they were selling them to Haunted Houses)
we routinely received calls from customers at low altitude
complaining that the streamer length was too long, and wanting to
know how to turn it down.  None of them read the owner's manuals,
apparently.
```
```
Hahahahahhaaha! ;-))

```
```(required adjusting the spark gaps, as we did not
include variable transformers in any of our coils to keep costs down)

After many of these calls, I found that our customers at lower
altitude were routinely getting much _longer_ streamers than we were
in Boulder!  I assumed it was due to altitude, but never really had
the opportunity to test it out.
```
```
I heard you mention this once and ask this list about it.

http://www.pupman.com/listarchives/2005/Jun/msg00561.html

```
It was thought that the real effect was at the 'spark gap' raising the 'firing voltage'. If we raise the firing voltage 20% then the 'coil power' goes up 44%. But the output arc is a SQRT thing so we are back to 20% Then the output arc should 'also' be suppressed... 20%... So a net 0% increase in streamer length from Boulder to New Orleans.... A mystery exists there...
```
```
```Anybody got access to a room sized
altitude chamber?  :D
```
```
```
Martin has one. I got "connections", but the coil would have to be soaked in acetone or something so as not to contaminate it all up... But we don't need it.... The SISG is super line power friendly, easily run off a UPS portable supply. Extremely reproducible and stable electronics. Here in Colorful Colorado we can just "drive the land yacht" from 5300 to 12183 in an hour or so.
```
http://www.nps.gov/romo/visit/weather/scenicdrives.html

```
This has been a four year old project now. Maybe "someday", I will do it :o)) I have a fancy GPS "puck" that does +- 5 feet for elevation and all...
```
```
95% of the fun is going to the National Park Ranger's office explaining the experiment and getting their OK so they don't think we are terrorists :o)))))) Might have to be run inside the car so an elk bull does not give birth out of season or anything... Have to 'not' blow up the car's 5 computers since it is a heck of a towing bill back down...
```
Cheers,

Terry

```
``` - Bill "Gomez" Lemieux
```
```

```