how do i find out how much db my antenna is - Page 4

fordem · 08-20-2002

That should be .75 cm or 7.5 mm - somewhere around 5/16" or 3/8".

paran0id · 08-20-2002

After going back and rereading this thread, I dont know how i missed the CM in the first few posts. I think it was only lincomatic who accidentally wrote .75MM, and I knew that couldnt be right. Thanks again.

TheSovereign · 08-20-2002

i found out that this type of antenna is used for triangulation its used on a spinning tray until the signal is strongest at its horizon
2 of these antennas 15 meters apart can pinpoint a signal 2 miles away with proper reading equipment

i am currently working on a 6 coil one when im done ill post the #'s

fordem · 08-21-2002

That means that this is probably a highly directional design with a very narrow beam width and orientation will be super critical!

Maybe that's why I had such poor results.

Soverign - did your friend say if the shape of the interconnections was important? I just wound mine from a single length of wire, so I don't have the 90 degree bend where you show it.

TheSovereign · 08-21-2002

the dimensions are very important
i deviated slightly and was getting horrible interferance
i fixed it with a ruler and a vice
to exact measurements and in order to get a broad signal it should be laying flat like on your dashboard, the coils should point to the driver and passenger it seems to be the best configuration for it. for triangulation you would sit it up vertically and spin it

TheSovereign · 10-08-2008

Did anyone else ever build one of these? Or find out the name of this type of ant. by chance?

Barry · 10-08-2008

Holy crap!! Break out the shotguns!

streaker69 · 10-08-2008

Quote:

Originally Posted by TheSovereign

Did anyone else ever build one of these? Or find out the name of this type of ant. by chance?

Would you care to elaborate on your question or are you actually expecting everyone to read through all the pages of a 6 year old thread to find what antenna you're talking about? Since it isn't in the first post, I'm guessing it's buried somewhere in the other pages.

Klaatu Verata Nictu.

Thorn · 10-08-2008

Quote:

Originally Posted by TheSovereign

Did anyone else ever build one of these? Or find out the name of this type of ant. by chance?

No, or if they did, they never said.

So, where have you been hiding?

TheSovereign · 10-08-2008

Living life, just keep getting sucked back into wireless, heh.

brwrdrvr · 10-08-2008

Quote:

Originally Posted by streaker69

Would you care to elaborate on your question or are you actually expecting everyone to read through all the pages of a 6 year old thread to find what antenna you're talking about? Since it isn't in the first post, I'm guessing it's buried somewhere in the other pages.

Klaatu Verata Neck-tie.

Fixed!

TheSovereign · 10-08-2008

Quote:

Originally Posted by TheSovereign

this is what its supposed to look like
i got the instructions from a friend of mine in arizona he deals with high frequency wireless
he says this is the best type of antenna for its size
it recieves transmissions sideways so its meant to lie down flat
u can add more sections of turns as long as u alternate from 28 to 25 and back

.75 cm is the size of the turns i found a screw driver that was exactly .75 cm

This one, post #11 in this thread. There was alot of variability in its construction and I was just wondering if anyone ever got around to perfecting it because of its stealthy nature. Also a picture of it in post 11. a completed 2 coil in post 28. i believe i had posted a 5 coil one at point but i cant find the pictures.

G8tK33per · 10-09-2008

Quote:

Originally Posted by TheSovereign

Did anyone else ever build one of these? Or find out the name of this type of ant. by chance?

Holy fuck...talk about reviving zombie threads and it's even is own!

beakmyn · 10-13-2008

Where we going doc, back to the future? No Marty! We're going back... to the past!

08-20-2002	#48 (permalink)
TheSovereign Master of the universe Join Date: Jun 2002 Location: chicago Posts: 658	i found out that this type of antenna is used for triangulation its used on a spinning tray until the signal is strongest at its horizon 2 of these antennas 15 meters apart can pinpoint a signal 2 miles away with proper reading equipment i am currently working on a 6 coil one when im done ill post the #'s __________________ SO SAYS TheSovereign Last edited by TheSovereign : 08-20-2002 at 07:38 PM.

08-21-2002	#50 (permalink)
TheSovereign Master of the universe Join Date: Jun 2002 Location: chicago Posts: 658	the dimensions are very important i deviated slightly and was getting horrible interferance i fixed it with a ruler and a vice to exact measurements and in order to get a broad signal it should be laying flat like on your dashboard, the coils should point to the driver and passenger it seems to be the best configuration for it. for triangulation you would sit it up vertically and spin it __________________ SO SAYS TheSovereign

10-08-2008	#51 (permalink)
TheSovereign Master of the universe Join Date: Jun 2002 Location: chicago Posts: 658	Did anyone else ever build one of these? Or find out the name of this type of ant. by chance? __________________ SO SAYS TheSovereign

10-08-2008	#52 (permalink)
Barry Managing the iTards. Join Date: Dec 2002 Location: Ohio Posts: 5,882	Holy crap!! Break out the shotguns! __________________ Never do anything you don't want to explain to the paramedics.

10-08-2008	#55 (permalink)
TheSovereign Master of the universe Join Date: Jun 2002 Location: chicago Posts: 658	Living life, just keep getting sucked back into wireless, heh. __________________ SO SAYS TheSovereign

08-20-2002	#46 (permalink)
fordem Tropical Stumbler Join Date: Apr 2002 Posts: 575	That should be .75 cm or 7.5 mm - somewhere around 5/16" or 3/8".

08-20-2002	#47 (permalink)
paran0id Registered Member Join Date: Apr 2002 Location: pittsburgh, PA Posts: 30	After going back and rereading this thread, I dont know how i missed the CM in the first few posts. I think it was only lincomatic who accidentally wrote .75MM, and I knew that couldnt be right. Thanks again.

08-21-2002	#49 (permalink)
fordem Tropical Stumbler Join Date: Apr 2002 Posts: 575	That means that this is probably a highly directional design with a very narrow beam width and orientation will be super critical! Maybe that's why I had such poor results. Soverign - did your friend say if the shape of the interconnections was important? I just wound mine from a single length of wire, so I don't have the 90 degree bend where you show it.

10-13-2008	#59 (permalink)
beakmyn Free Public Wifi Join Date: Aug 2003 Posts: 4,992	Where we going doc, back to the future? No Marty! We're going back... to the past! __________________ ┌──────────────────────────────┐ ╞ NS Icons Explained\|et hoc genus omne ╡ └──────────────────────────────┘ Creating yesterday's future, Today!

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