model airplane airspeed transmitter/receiver-tone only

Status
Not open for further replies.
V

vortex00

New Member
I'm interested in constructing a transmitter/rec that transmits to the pilot on the ground thru an earpiece. approx. 1000' range.
The result needed would be:

airspeed slow- higher pitched tone - beep beep beep
at desired speed- steady tone
airspeed high- lower pitched tone - beeep beeep beeep

Airspeed sensor would be by an AOA(angle of attack)vane varying the resistance of a pot.

could someone point me in the right direction?

thank you

Jack
vortex00@yahoo.com
 
A simple variable-frequency tone would require slightly less weight and size. Just put the pot in a 555 oscillator and use that to amplitude modulate an RF transmitter. If you need beep-beep-beep, you could do that processing on the ground. Of course, it wouldn't require too much more space/weight to do the beeping in the plane.
**broken link removed** has a good 555 tutorial, and also lots of RC info.
 
Ron,
Thanks for the reply. It will get me started.

I'll look at the small Spy FM Tx if I can find one that gives me about 600-1000'. Rec to be a simple FM receiver on the belt with earpiece.

The real F-4 Phantom had a similar system before the ICs came. I wondered how it was done.

Jack
 
Status
Not open for further replies.

Similar threads

D
  • Question
Bluetooth integrated FM transmitter project
Replies
19
Views
4K
audioguru
A
  • Question
Bjt bi directional logic shifter only up shifts
Replies
2
Views
2K
Beau Schwabe
J
  • Solved
Sharing A Speaker With An DY-SV19T For MP3 Files And ESP32 For Tone
Replies
10
Views
3K
_John_
J
P
  • Question
Project or Book with 2 Watt VHF transmitter for tracking
Replies
16
Views
2K
preWarp
P
S
  • Question
512Hz Mini Transmitter
Replies
17
Views
5K
danadak
Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…