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Old 01-21-2008, 01:24 AM
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Seldom Seen Seldom Seen is offline
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Join Date: Aug 2005
Location: Highlands Ranch
Posts: 542
Default T7

Notes on the T7 section - Special Operations


Field operations

- bring extra battery packs for your handheld

- leave the 1500 watt amp at home (too heavy)

- use an external antenna instead of the "rubber-duck" antenna

- combination headsets/microphone helpful if there's background noise

Radio Direction Finding & Fox Hunting

- RDF used to find sources of interference or jammers, or in fox hunts

- fox hunting: contest in which hams try to find hidden transmitters

- directional antennas used for both of these

Contests - involves contacting as many stations as possible in a certain amount of time

Grid locator - letter/number combination used as a geographic location designator

Special Event Station - temporary station that operates in conjunction with an activity of special significance

Radio Control

- maximum power is 1 watt

- a label must be attached to the transmitter with call sign and address

Satellites

- any ham can use the ham radio satellites in orbit as long as you are allowed to use the uplink frequency

- use the minimum power needed

- can be used to talk to hams in other countries

- any ham can contact the ISS (International Space Station)

- beacon: radio signal giving information on the satellite

- a satellite tracking program is used to find when you can access a satellite

- Doppler shift: change in frequency caused by the satellite's motion

- AMSAT: biggest group that builds and launches ham satellites

- sub-band: portion of a band where satellite operations are permitted

- on the 70 cm band, the satellite sub-band is from 435-438 MHz

- a LEO satellite is in a low Earth orbit
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