• Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Communication on a High Powered Rocket

Thread starter #1
Hello,

I am building a high power rocket (estimate altitude between 15-16 thousand ft) and I need to have communication to a hand held receiver so I can get a GPS location of the rocket and live event updates (when parachutes deploy, what altitude I got, etc). I got the Eggfinger TRS and LCD display (http://www.eggtimerrocketry.com/page47.php - TRS) (http://www.eggtimerrocketry.com/page46.php - LCD). I have the GPS module for the LCD. There will be threaded rods that span the length of the electronics bay (short section of the rocket that houses the electronics) so having the antenna in there would compromise the range (to about 7000 ft) so I need to have the antenna outside of the electronics bay.

My first choice would be to have some kind of wire antenna that I could zip tie and duct tape to the shock cord (nylon strap that attaches the rocket to the parachute) so that I don't have to worry about the rocket landing on and breaking the antenna, but it would need to be very flexible to allow for the packing of the shock cord and parachute in the rocket. I haven't been able to find anything that would allow me to do this so my backup plan right now is to have a rubber duckie antenna from the bulkhead (lid to the electronics bay), but the issues I see with this are the rocket landing on the antenna causing it to break and the shock cord snapping the antenna off at separation.

Edit: The antenna needs to be RP-SMA and 900 MHz. The rubber duckie antenna I got for the LCD is 3 dBi.

Thanks for the help,
Andrew
 

MikeMl

Well-Known Member
Most Helpful Member
#2
Is the body of the rocket made of something that doesn't block RF, or is it metallic?
 

unclejed613

Well-Known Member
#4
how about using copper foil tape on the outside of the rocket for an antenna?
 

gophert

Active Member
#5
Hello,

I am building a high power rocket (estimate altitude between 15-16 thousand ft) and I need to have communication to a hand held receiver so I can get a GPS location of the rocket and live event updates (when parachutes deploy, what altitude I got, etc). I got the Eggfinger TRS and LCD display (http://www.eggtimerrocketry.com/page47.php - TRS) (http://www.eggtimerrocketry.com/page46.php - LCD). I have the GPS module for the LCD. There will be threaded rods that span the length of the electronics bay (short section of the rocket that houses the electronics) so having the antenna in there would compromise the range (to about 7000 ft) so I need to have the antenna outside of the electronics bay.

My first choice would be to have some kind of wire antenna that I could zip tie and duct tape to the shock cord (nylon strap that attaches the rocket to the parachute) so that I don't have to worry about the rocket landing on and breaking the antenna, but it would need to be very flexible to allow for the packing of the shock cord and parachute in the rocket. I haven't been able to find anything that would allow me to do this so my backup plan right now is to have a rubber duckie antenna from the bulkhead (lid to the electronics bay), but the issues I see with this are the rocket landing on the antenna causing it to break and the shock cord snapping the antenna off at separation.

Edit: The antenna needs to be RP-SMA and 900 MHz. The rubber duckie antenna I got for the LCD is 3 dBi.

Thanks for the help,
Andrew
I would ziptie a 28-gauge copper wire to several places along the shock cord (length of copper slightly more than fully extended shock cord so it doesnt break).
 

Latest threads

EE World Online Articles

Loading

 
Top