how to transmit
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Antennas : 17M- KK5BL How To Build A G5RV Antenna
- How to build a G5RV Transmitting antenna
Originally posted to the packet bbs system by KC6CFF. The G5RV is an easy-to-build 80-10 dipole requiring no traps. All bands are covered, including 30, 17, and 12. The G5RV has high SWR, by design, on most bands and a tuner is required
[ Hits: 25187 | Votes: 7 | Rating: 6.15 ]
- Improve your Antennas for Low Solar Activity
- How to improve your transmitting antennas for very low solar activity periods, vertically polarized 160 meter antennas, horizontally polarized 80 to 10 meter antennas, single or stacked yagis, multi-tower stations
[ Hits: 418 | Votes: 0 | Rating: 0 ]
- Antenna Gain to ERP
- A radio's transmitting power can be concentrated along the horizon by use of a GAIN antenna. Although you may still be transmitting with four watts of power, your effective radiated powerwill be greatly increased. This table shows the effects of antenna gain on a transmitter with 4 watts of transmit power.
[ Hits: 1386 | Votes: 4 | Rating: 4.5 ]
- How To Make A VO-52 SAT QSO Video
- Using a home made 10 element 435 & IO Loop for 145MHz, with a Yaesu FT-847. Simon - 2E0HTS, adjusts his (uplink) transmitted signal to correct the doppler of the Received (downlink) frequency.
[ Hits: 1025 | Votes: 0 | Rating: 0 ]
- Spark Gap Transmitter
- The details of the spark gap transmitter and its history: how it was invented, developed and used.
[ Hits: 382 | Votes: 1 | Rating: 10 ]
- Guide to DMR Code Plugs
- Basic information on code plugs. What code plugs is, how to set up a code plug, transmit talk groups and configuring zones.
[ Hits: 178 | Votes: 1 | Rating: 10 ]
- PSK: How to Assure a Clean Signal
- Due to the nature of PSK it is imperative that you maintain a very clean signal. In this page you will find examples of a clean PSK signal and one with excessive splatter, and a short guide on how to properly adjust your transmitter to assure a clean trace
[ Hits: 137 | Votes: 0 | Rating: 0 ]
- How Satellite Doppler Tracking Works
- The Doppler Effect allows the distance between a satellite transmitting from space and a radio receiver on the ground to be measured by observing how the frequency received from the satellite transmitter changes as the satellite approaches, passes overhead, and moves away.
[ Hits: 424 | Votes: 3 | Rating: 4.67 ]
- Near-Real-Time F2-Layer Critical Frequency Map
- This map can be used to determine the frequencies that will always be returned to the Earth. Transmitted frequencies higher than the indicated contours (which are given in MHz) may penetrate the ionosphere, resulting in lost power to space.
The map shows the radio auroral zones as green bands near the northern and southern poles.
[ Hits: 5270 | Votes: 24 | Rating: 4.84 ]
- BeaconSee
- BeaconSee shows you, in real time, worldwide HF band openings on your PC. Analyses the audio signals from your radio, which is tuned to the NCDXF IARU HF beacon network and shows you the signal strength received from each of the 18 beacon transmitters as a plot of frequency spectrum against time.
[ Hits: 7239 | Votes: 13 | Rating: 7.61 ]
- Beaconmap
- Beaconmap is a Win95/98/NT program to help listeners to identify the beacon stations of the NCDXF/IARU beacon network. The program displays a flashing dot at the location of the beacon that is currently transmitting. The call sign of the beacon, as well as the QTH is shown in the status bar. By PA1ARE
[ Hits: 1449 | Votes: 3 | Rating: 4.67 ]
- Beacons app for Windows
- Shows which beacon is currently transmitting on the selected radio band
Displays information about transmitting beacon
Informs about direction and bearing from users position towards transmitting beacon
[ Hits: 879 | Votes: 0 | Rating: 0 ]
- IBP - Beacon Monitor
- Linux program that helps one with monitoring the beacons of the International Beacon Project, by continuously showing which beacon is transmitting on which frequency, along with the distance and antenna directions by PA3FWM
[ Hits: 1489 | Votes: 2 | Rating: 5.5 ]
- BeaconAid-HF
- Iphone app for ncdxf IARU beacon monitoring, shows the currently transmitting beacon on each band, reception charts from the active monitoring stations, and latest solar flux A and K indices
[ Hits: 1374 | Votes: 0 | Rating: 0 ]
- Arduino QRP Transceiver: DIY Success on HF Bands
- This article introduces an Arduino-based QRP CW Transceiver designed for lower HF bands. The journey begins with the Wotduino, evolving from a keyer to a multi-mode beacon. The development includes a QRP transmitter and culminates in a receiver inspired by Roy Lewallen design. The transceiver, controlled through a control bus features a signal path, modulation, filtering, and adjustable frequency settings. Despite initial testing intentions, successful QSOs on 80 and 40 meters showcase its functional capabilities.
[ Hits: 104 | Votes: 1 | Rating: 1 ]
- Opto Electronics
- The branch of electronics dealing with devices that generate, transform, transmit, or sense optical, infrared, or ultraviolet radiation
[ Hits: 299 | Votes: 0 | Rating: 0 ]
- Preventing CW key clicks
- Key clicks are generally undesired clicks or thumps generated by a CW transmitter as the key is put down or let up. How much does the rise time or bandwidth of a CW signal need to be limited to prevent other QSOs on adjacent frequencies from being annoyed by key clicks?
[ Hits: 93 | Votes: 0 | Rating: 0 ]
- Raspberry Pi WSPR beacon
- How to build a simple WSPR beacon using the Raspberry Pi for the transmitter
[ Hits: 1325 | Votes: 4 | Rating: 7 ]
- Filter your Raspberry PI Transmitter
- How to limit unwanted harmonics from your raspberry Pi radio transmitter by introducing filters.
[ Hits: 345 | Votes: 1 | Rating: 1 ]
- Raspberry Pi Pirate Radio
- In this tutorial, the author shows the basics of how to set up a Raspberry Pi Pirate Radio utilizing the FM Transmitter software and a piece of wire.
[ Hits: 71 | Votes: 0 | Rating: 0 ]
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