Hybrid Rockets

Hybrid Rocket Science Hybrid Rocket Help Clinic HPR Hybrid Motors HPR Hybrid Motors in the UK Commercial HPR Hybrid motors Hybrid Motor Costs Hybrid Motor Links UK Hybrid Rocket History Hybrid Motor Ignition Methods R.A.T.T.Works Hybrid Motors Skyripper Hybrid Motors

Experimental Rocketry

Amateur Hybrid Motors Amateur Liquid Rockets Guidance Gimballed Motors Launch Controller Static Test Stand Separating Strap-ons

Payloads

Onboard Video Cameras Onboard Video Camera Tips Onboard Stills Cameras

Media

Media - Scrapheap Media - Other Rocket Videos

Personal Rocketry

Personal Amateur Rocketry Personal Amateur Hybrids Hybrid Motor Personal Notes Personal HPR Hybrid Launches High Power Rockets High Power Rocket Launch List Model Rockets

Avionics

Altimeter/Accelerometers Altimeter Comparison Chart R-DAS Flight Computer R-DAS FAQ Compact R-DAS Guide R-DAS Classic Guide R-DAS Flights R-DAS GPS Module R-DAS On Screen Display R-DAS Variance G-Wiz Altimeter Avionics Avionics Tips Payload Bay Design Onboard Power Systems

Telemetry

Telemetry Receiver Antenna Pulse Circuit Pulsed Tone Circuit

Miscellaneous

UK Rocketry Vendors UK Rocket Groups Online Rocket Resources Rocket Publications UK Rocketeers UK Rocket Educators UK Space Organisations UK Space Conferences/Events UK Astronomical Organisations Altitude Records The Skunk Works Rules Akins Laws

RF Antennas

RF Antenna Mk I

My first RF antenna was based on Peter Kerchoff's antenna design on his excellent PbP web pages. I used 4mm diameter aluminium rods for the parasitic elements and the reflector element, and a 4mm diameter brass rod for the driver element. The reason for using brass for the driver element, is that since this is the element that is soldered to the output lead, it would be easier to solder brass than aluminium.

My basic antenna cost was expensive - approximately £10.00, but this could have been reduced considerably if I hadn't have decided to use a carbon fibre rod.

Components

2 x 1 metre long, 4mm diameter aluminium rods.
1 x 1 metre long, 4mm diameter brass rod.
1 x 1 metre long, 15mm x 15mm aluminium box section (£3.67).
1 x BNC socket.

RF Antenna Mk II

My second RF antenna is the one I currently use, and is a Sandpiper Aerials Yagi-Uda antenna designed for operation at 433 MHz.