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Fldigi (short for Fast light digital) [4] is a free and open-source program which allows an ordinary computer's sound card to be used as a simple two-way data modem.The software is mostly used by amateur radio operators who connect the microphone and headphone connections of an amateur radio SSB or FM transceiver to the computer's headphone and microphone connections, respectively.
Software License Operating Systems Features Amateur Contact Log by N3FJP Proprietary Windows Logging, Transceiver control, Callbook lookup, QSL handling (Hardcopy / LoTW / eQSL / Club Log), Awards, DX Spots, Digital Modes
Ham Radio Deluxe is an amateur radio software program which is used with external RF hardware. [1] [2] Modules. There are five modules within Ham Radio Deluxe.
One of the tones is a synchronization tone, leaving 43 tones to carry data (one tone per character in the character set, which includes alphanumerics and some punctuation). The symbol rate is 21.53 baud; the actual data rate as encoded for transmit is 14.4 characters per second.
Two mono or stereo 1/8" audio plugs connect to the computer's sound card. The audio circuitry is the owner's responsibility. The IRLP board is a very simple circuit, the most difficult part being the DTMF decoder which consists of a MT8870 (or similar) DTMF decoder IC and HCF4081 (or similar) and-gate IC.
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From March 2011 to December 2012, if you bought shares in companies when Mukesh D. Ambani joined the board, and sold them when he left, you would have a -16.7 percent return on your investment, compared to a 9.2 percent return from the S&P 500.
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