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3rd Public Domain Release of 2016-2020 Extra Class Question Pool March 5, 2016 The NCVEC Question Pool Committee has released the 3rd version the FCC Element 4,Amateur Extra Class Question Pool originally released originally January 8, 2016 Public Domain Question Pool Files for Download have been replaced with NEW filesthat includes a 2nd […] CH ความถี่ อธิบาย Power 1 144.725 ศรีสะเกษ H 2 144.9375 E20AE,RAST L 3 145.7125 Repeater SSK H 4 144.900 แจ้งเหตุ H 5 145.000 ช่องเรียกขาน H 6 145.7750 Echolink SSK L 7 144.625 ศรีสะเกษ-กล้วยไม้ H 8 144.850 ศรีสะเกษ850 H 9 147.000 ศรีสะเกษ7 H 10 162.800 อพปร. H 11 152.850 โพธิ์ทอง H 12 144.425 SSTV L […] 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. […] 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 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 (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 […] https://sites.google.com/site/tapemeasureantenna/ 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 […] 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 […] |
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