Gourt > Recreation > Radio > Amateur > QRP (3)
In amateur radio, QRP operation means transmitting at reduced power levels. The term QRP derives from the Q code where "QRP?" was used to mean, "Question: shall I Reduce my Power?".
There is not complete agreement on what constitutes QRP power. While most agree that for CW, power levels should be held at, or below, 5 watts, power levels for voice are not always agreed upon. Some believe levels should be held below 10 watts, while others strongly hold that, like the digital modes, the power limit is 5 watts. QRPers are known to use even less than five watts, sometimes operating with as little as 100 milliwatts or even less. Extremely low power -- 1 watt and below -- is often referred to by hobbyists as QRPp. Commercial transceivers designed to operate at or near QRP power levels have been available for many years, but some QRPers prefer to design and build their own equipment, either from kits or from scratch. On the other hand, many of the larger, more powerful commercial transceivers permit the operator to lower their output level to QRP levels.
Most amateur radio operators use between 50 and 120 watts of power. However this isn't always necessary. When it's not, doing so wastes power, increases the likelihood of causing interference to nearby televisions, radios, and telephones and, for United States' amateurs, violates an FCC Part 97 rule which states that one must use, "the minimum power necessary to carry out the desired communications."
More on [ QRP operation ]
DXing :: Amateur
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SWL PSK-20: Great PSK-20 aligned by Small Wonder Labs. QRP PSK using only stereo cables to a computer--no inter.. http://bit.ly/6qL3yh
w3sgj (BVARA) Wed, 06 Jan 2010 18:27:25 -0000
SWL PSK-20: Great PSK-20 aligned by Small Wonder Labs. QRP PSK using only stereo cables to a computer--no inter.. http://bit.ly/6qL3yh
QRP Power Meter and Dummy Load In this article the schematic is of AA5TB QRP power meter and dummy (50 Ohm) load ... http://is.gd/5OLFE
dxzone (dxzone) Wed, 06 Jan 2010 18:12:02 -0000
QRP Power Meter and Dummy Load In this article the schematic is of AA5TB QRP power meter and dummy (50 Ohm) load ... http://is.gd/5OLFE
40 meter QRP CW transceiver Home made QRP CW transceiver for 7 MHz by JF10ZL... http://is.gd/5Oz3w
dxzone (dxzone) Wed, 06 Jan 2010 17:00:05 -0000
40 meter QRP CW transceiver Home made QRP CW transceiver for 7 MHz by JF10ZL... http://is.gd/5Oz3w
I uploaded a YouTube video -- Steve Faulkner performing at Integral Leadership Management conference http://youtu.be/qRp-VBp7F98?a
faulknersteve (Steve Faulkner) Wed, 06 Jan 2010 14:19:24 -0000
I uploaded a YouTube video -- Steve Faulkner performing at Integral Leadership Management conference http://youtu.be/qRp-VBp7F98?a
qrp ferias!!!!
fariasdiego (Diego Farias) Wed, 06 Jan 2010 13:53:12 -0000
qrp ferias!!!!
DX Zone: QRP Power Meter and Dummy Load http://goo.gl/fb/gOi4
GB_ham (Alexander) Wed, 06 Jan 2010 11:29:07 -0000
DX Zone: QRP Power Meter and Dummy Load http://goo.gl/fb/gOi4
Australian QRP - QRP from the land down under!
Contest Calendar - Courtesy of the New Jersey QRP Club
Ham Radio Circuits - Circuit diagrams of Ham Radio equipment, including 7 MHz SSB Transceiver, AM, FM, DSB transmitters, FSM, Dummy load, Antenna, and filters.
Meta Description: [ Circuit digrams of Ham Radio equipments including 7 MHz SSB Transceiver, AM, FM, DSB transmitters, FSM, Dummy load, Antenna, Ladder filter, receiver and various rf and hobby circuits. ]
QRP Amateur Radio Web Ring - Links to QRP web sites.
Meta Description: [ QRP(Low Power Amateur Radio) ]
QRP Citations and Links - Introductional citations and information about QRP and PSK31.
QRP World - Tips and information on kits, antennas, and home brew QRP projects.
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