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Building an interface for PSK31 and SSTV
http://www.staffordengineeringsystems.co.uk/Data/radio/Yaesu/FT-902/buildPSK.pdf
option, install it in the transmit audio input to your transceiver anyway. If you elect to use this capacitor, BE SURE to install it with the 'PLUS (+) lead towards the microphone inputor the transceiver audio input. The remaining lead connects toward the (RED) isolation (PSK31 Tx audio out) transformer lead.
Sound Card Interfacing for RTTY, PSK31, and SSTV - IW5EDI
http://www.iw5edi.com/ham-radio-reference/sound-card-interfacing-for-rtty-psk31-and-sstv
All audio levels are equalized when running either the computer, the SSTV program or PSK31. A switch is used to switch between Computer and the Radio Modes. To adjust this circuit, tune to a strong carrier and tweek RV1 until the red overload lines disappear. At this point simply tweek RV2 to give the required output power from the transmitter.
PSK31 & SSTV interface box
http://mymorninglight.org/ham/PSKbox.htm
N1NKM's PSK31 / SSTV interface This page contains a schematic & photos to help you build a nice computer sound card interface. It has two pots, allowing complete and independent control of the receive and transmit audio levels between the computer and your rig.
Ham Radio CAT, PSK31, FT8, JT9 and JT65 Interfaces - …
http://xggcomms.com/Yaesu-Interface-Shop(2066629).html
With this interface, you will be up and running on FT8, PSK31, Echolink, SSTV, Pactor, Packet or any mode that requires CAT control and Tx/Rx Audio Interfacing between your PC Soundcard and Radio within minutes. Cable length is 1.5m from the USB and audio connectors to the interface box. The cables from the interface box to the transceiver is 0.6m.
Soundcard Interface withTone Keyer for PSK31, SSTV, RTTY ...
http://wa8lmf.net/ham/tonekeyer.htm
Self-Powered Tone-Keyed Interface This is an improved version of the audio interface commonly used to connect a computer soundcard to a transceiver's receive and transmit audio circuits. This kind of interface is used by computer programs that send and receive SSTV, RTTY, CW, PSK31 and various other digital modes entirely in software.
Ham Radio CAT, PSK31, FT8, JT9 and JT65 Interfaces - Home Page
Perfect for PSK31, FT8, JT9, JT65, Echolink and any other AFSK modes. Connects to your PC via USB and has both an external USB Sound Card and FTDI Chipset CAT interface built-in with isolated Tx/Rx audio and PTT. Check the review on OH8STNs website here: . Ultimate Audio and CAT Control Xiegu G90/X5105 – OH8STN Ham Radio
What is PSK31 - N3UJJ
http://n3ujj.com/manuals/What%20is%20PSK31.pdf
What is PSK31? As the name implies, PSK (phase shift keying) modulates the phase of a carrier, and the number ''31'' references the actual bandwidth (31 Hz) occupied by the PSK31 signal. The software that first implemented PSK31 with a Windows PC and soundcard was written and developed by Peter Martinez, G3PLX.
An Introduction to PSK31
https://mtnarc.org/index_htm_files/PSK31%20intro.pdf
What is PSK31? zPSK31 is a digital mode ideally suited for use in the HF bands. zThe “PSK” means Phase Shift Keying. z“31” means 31.5 baud. zPSK31 rivals the weak-signal performance of CW, and is a vast improvement over RTTY. The bandwidth of a proper PSK31 signal is only 31 Hz – narrower than the average CW signal!!!
Computer to Rig Interfacing You Don ... - Audio Systems Group
http://audiosystemsgroup.com/HamInterfacing.pdf
2 Interconnections Needed • Sending CW – Computer to radio – Paddle and keyer to radio • PTT from computer to radio – Or use VOX • Rig control and data for logging software – Frequency readout, band changes Pre-Recorded CQs are Cruical! • Without them, you can’t munch or drink coffee! • Rest your voice • Think about what you’re going to do next ...
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