circuit generating RF waves..urgenttttt

Thread Starter

veda

Joined Oct 6, 2007
1
hi everyone..
i am stuck in a project that requires a circuit that can generate RF waves that can be sensed by a satellite...can aneone help..plz :(
 

beenthere

Joined Apr 20, 2004
15,819
That is hard to respond to without more information. Do you want just a noise source, or some means of sending coherent data to a satellite? Digital or analog? What range of RF frequencies are you interested in? Possible technologies vary with the frequency.
 

sd_AAC

Joined Oct 5, 2007
2
whatever data you may generate use klystrone tube to generate uwave. And if you're keen to generate it with electronic device use pin diode using proper housing facility.
 

SgtWookie

Joined Jul 17, 2007
22,230
This site has some helpful information about satellite uplinks:
http://www.satsig.net/satellite-links.htm

Klystrons are ancient technology. TWT's (Travelling Wave Tubes) provide much cleaner signals, and are much easier to tune. But both are going to be out of reach of the casual experimenter simply due to the costs involved, not to mention the hazards involved in high-power C or Ku band transmissions.

Just as a general concept, this site should also be helpful:
http://go.gethughesnet.com
HughesNet used to be DirecPC, a subsidiary of Hughes Space & Communications. With the advent of newer, high-powered satellites, ground-based uplink/downlink stations can function using much lower power levels than ever before.

You may remember Iridium Cellular - global cellular communications via a constellation of 63 satellites. Expensive, yet remarkable - the handheld sat cell phones were around $4,000 US each.
 

Papabravo

Joined Feb 24, 2006
21,157
Casual experimenters are unlikely to have an urgent reason for building a satelite uplink. Amateur radio operators routinely use satelites in LEO to communicate with each other. Perhaps the OP could give us more insight into his application.
 
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