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TRANSMITTING FM, AM, SSB, SSTV AND FSQ WITH JUST A RASPBERRY PI

Previously we posted about the Raspberry Pi’s ability to modulate one of its pins to produce FM transmissions with PiFM. A developer (F5OEO) has recently expanded on this idea, and now the Raspberry Pi is capable of modulating and transmitting FM, AM, SSB, SSTV and FSQ signals anywhere between 130 kHz to 750 MHz.

[…]

KISS TNC by m0pzt

Projects : KISS TNC Most of this project is based-upon the firmware from Mobilinkd but some discrete parts and some soldering (or breadboard) is required to get things working. By re-flashing an Arduino-compatible microcontroller, it’s possible to turn it into a KISS TNC for use with APRS/AX25. Depending upon where you get your ‘duino […]

Arduino Multiband Beacon

Arduino Multiband Beacon INTRO http://blog.dxers.info/2016/01/been-playing-around-with-39usd-arduino.html 144 MHz (2 meters) http://blog.dxers.info/2016/01/arduino-uno-si5351a-breakout-as-144.html 432 MHz (70cm) http://blog.dxers.info/2016/01/arduino-uno-si5351a-breakout-as-432mhz.html 902 MHz http://blog.dxers.info/2016/02/arduino-uno-si5351a-breakout-as-902mhz.html TESTS http://blog.dxers.info/2016/02/etherkit-si5351a-beacon-and-another.html MULTI-BAND Operation (successful) http://blog.dxers.info/2016/02/arduino-tinkerkit-etherkit-si5351a.html 5-BAND Operation (TESTING) http://blog.dxers.info/2016/02/arduino-tinkerkit-etherkit-si5351a_9.html

 

ที่มา: http://blog.dxers.info/p/arduino-multiband-beacon.html

[…]

VHF BEACON AND APRS TRACKER

VHF BEACON AND APRS TRACKER (ENGLISH VERSION) 29/06/2015f4goh

This little low cost FM transmitting card can be used for different applications, like:

APRS Tracker APRS WX station APRS for sounding balloon Fox hunt Beacon for emergency exercice

Most of the time , the transmission of an APRS signal is AFSK , that is […]

Tower น่าสนใจจากเว็บฝรั่ง ย่าน HF

 

ทำสายอากาศหา fox

https://sites.google.com/site/tapemeasureantenna/

D-Star Repeater

Converting a D-Star Hotspot to a Full Duplex Repeater

If you have a gmsk modem and put up a D-Star Compatible Hotspot, it is quite easy to convert this simplex system to a full duplex repeater that supports DPlus linking to other repeaters, reflectors and often to Hotspots, DVAPs and DV Dongles. With other […]

D-star Hotspot

What is it?

D-STAR Hot Spot is software for Windows that creates a D-STAR ‘point of presence’ (or hot spot) utilizing an analog radio and a GMSK node adapter. The hot spot creates RF access to the D-STAR network where none previously existed. With a hot spot set up, you can use your D-STAR […]

D-Star UT118

UT-118 สำหรับ IC2200T

ที่มา: http://www.hamsiam.com/smf/index.php?topic=211474.0

สถานีวิทยุสมัครเล่นที่น่าสนใจ

http://www.in.th/Sx9TRD

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