![]() ![]() Transmissions carry a station's callsign, Maidenhead grid locator, and transmitter power in dBm. WSPR implements a protocol designed for probing potential propagation paths with low-power transmissions. To test propagation paths on the MF and HF bands. The program isĭesigned for sending and receiving low-power transmissions Is now open source and is developed by a small team. The program was initially written by Joe Taylor, K1JT, Weak-signal radio communication between amateur radio operators. WSPR (pronounced "whisper") stands for "Weak Signal Propagation Reporter". Helpfull tutorials The Wonderful World of SSTV In other words, the signal frequency shifts up or down to designate brighter or darker pixels, respectively.Ĭolor is achieved by sending the brightness of each color component (usually red, green and blue) separately.Ī feed of my last receved SSTV images can be viewed from the live feed link above. Uses analog frequency modulation, in which every different value ofīrightness in the image gets a different audio frequency. It is a much slower method of still picture transmission, usually taking from about eight seconds to a couple of minutes,ĭepending on the mode used, to transmit one image frame. (in the NTSC, PAL or SECAM color systems), but SSTV usually only takes up to a maximum of 3 kHz of bandwidth. A technical term for SSTV is narrowband television.Īnalog broadcast television requires at least 6 MHz wide channels, because it transmits 25 or 30 picture frames per second The most popular modes of SSTV are Robot, Scottie, and Martin. Slow-scan television (SSTV) is a method for picture transmission used by amateur radio operators to transmit and receive images. There will always be some anomalies that the operator will have to sort out. The information provided in Ham Radio Deluxe Logbook (for awards and QSO fields) is only as good as the data that comes from the other logbook source. NOTE: Be aware of the “garbage-in/garbage-out” scenario. It may be necessary to clean up the source data - using the errors as your guide - and attempt the import again. If there are errors in the source ADIF, the operator will see this in the results displayed below. Once the file has been analyzed, the results will be shown. If you have older QSOs in your log, and a newer QTH, you may not want to have the old QSOs show up in your log under the net QTH. Use the " Insert Local Station Information on Import" with care. This will ensure that the country stands the best chance of being converted correctly. ![]() ![]() NOTE: It is strongly recommended that the top two boxes are always checked. Then select the ADIF file for input by clicking the button to the right of “DIF Filename. From the menu in Logbook, select Logbook >File > Import, and then choose the relevant option from the list of five shown. Make sure that it is configured to provide all available fields. ![]() Export the log into ADIF format from the other logging program. To import a log from another logging program, follow these steps: 1. Logs can be easily imported from other logging programs. This is a method for moving log data between dissimilar systems. NOTE: What's described here is not a method for log backup. Solution home Ham Radio Deluxe User Guides Logbook Importing Log Files ![]()
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