Pinned Repositories
A-Simple-AF-Mobile-Portable-WSPR-Beacon-Controller
GPS controlled audio WSPR source to drive a FT817 or other SSB transmitter,
A-Simple-WSPR-Transmitter-Receiver
SoftRock Lite II receiver and Si5351A transmitter
A-Small-Portable-SWR-Indicator-and-Signal-Source
This small battery powered microprocessor controlled device will help you rapidly tune your 630 – 10 meter antenna to resonance or serve as a 100 KHz – 112.5 MHz signal source.
Auto-Calibrated-GPS-RTC-Si5351A-FST4W-and-WSPR-MEPT
This Manned Experimental Propagation Transmitter (MEPT) uses the very popular Arduino Nano and Si5351A clock generator board to generate LF – 10 meter FST4W or WSPR signals. Frequency and time accuracy are maintained by a highly accurate temperature compensated DS3231 real time clock (RTC) board or by using a GPS receiver.
Auto-Calibrated-RTC-GPS-WSPR-Si5351A-Project
This is a full featured RTC auto calibrated WSPR signal source using the very popular Si5351A clock generator board.
GPS-Display-and-Time-Grid-Square-Synchronization-Source
This inexpensive and easy to build small battery powered device will not only provide time synchronization for the W3PM WSPR project, but makes an ideal pocket sized travel companion.
GPS-Si5351-VFO-QEX-JUL-AUG-2015
Si5351 Arduino Controlled GPS Corrected VFO (QEX July/August 2015)
QEX-July-August-2020-Multifunction-Project
This is a menu driven multifunction project that includes a band switched two channel 110 kHz – 112.5 MHz VFO, band switched 6 – 2200 m WSPR source, 0 – 6.5 MHz frequency counter, and a clock that displays time, date, and temperature. Frequency and time accuracy are maintained by a highly accurate temperature compensated DS3231 real time clock .
W3PM-Nano-33-IOT-Universal-MEPT
Modes: WSPR , FST4W, FT8, CW, QRSS Timing: WiFi, GPS, RTC. Version 2 now uses Gaussian pulse width shaping and calibrated symbol timing for FT8 and FST4W.
WSPR-Symbol-Generation-Utility-For-Compound-Callsigns
The utility will generate either conventional callsign/4 digit locator or compound callsign/6 digit locator data.
W3PM's Repositories
W3PM/GPS-Si5351-VFO-QEX-JUL-AUG-2015
Si5351 Arduino Controlled GPS Corrected VFO (QEX July/August 2015)
W3PM/Auto-Calibrated-GPS-RTC-Si5351A-FST4W-and-WSPR-MEPT
This Manned Experimental Propagation Transmitter (MEPT) uses the very popular Arduino Nano and Si5351A clock generator board to generate LF – 10 meter FST4W or WSPR signals. Frequency and time accuracy are maintained by a highly accurate temperature compensated DS3231 real time clock (RTC) board or by using a GPS receiver.
W3PM/A-Small-Portable-SWR-Indicator-and-Signal-Source
This small battery powered microprocessor controlled device will help you rapidly tune your 630 – 10 meter antenna to resonance or serve as a 100 KHz – 112.5 MHz signal source.
W3PM/W3PM-Nano-33-IOT-Universal-MEPT
Modes: WSPR , FST4W, FT8, CW, QRSS Timing: WiFi, GPS, RTC. Version 2 now uses Gaussian pulse width shaping and calibrated symbol timing for FT8 and FST4W.
W3PM/WSPR-Symbol-Generation-Utility-For-Compound-Callsigns
The utility will generate either conventional callsign/4 digit locator or compound callsign/6 digit locator data.
W3PM/A-Simple-AF-Mobile-Portable-WSPR-Beacon-Controller
GPS controlled audio WSPR source to drive a FT817 or other SSB transmitter,
W3PM/A-Simple-WSPR-Transmitter-Receiver
SoftRock Lite II receiver and Si5351A transmitter
W3PM/Auto-Calibrated-RTC-GPS-WSPR-Si5351A-Project
This is a full featured RTC auto calibrated WSPR signal source using the very popular Si5351A clock generator board.
W3PM/GPS-Display-and-Time-Grid-Square-Synchronization-Source
This inexpensive and easy to build small battery powered device will not only provide time synchronization for the W3PM WSPR project, but makes an ideal pocket sized travel companion.
W3PM/QEX-July-August-2020-Multifunction-Project
This is a menu driven multifunction project that includes a band switched two channel 110 kHz – 112.5 MHz VFO, band switched 6 – 2200 m WSPR source, 0 – 6.5 MHz frequency counter, and a clock that displays time, date, and temperature. Frequency and time accuracy are maintained by a highly accurate temperature compensated DS3231 real time clock .
W3PM/40MHz-GPS-FT8-WSPR-MEPT
This project uses the very popular Arduino Nano and Si5351A clock generator board to generate FT8 or WSPR signals. Frequency and time accuracy are maintained by using an inexpensive (NEO-6M) GPS receiver board. A 60 minute schedule sets operation on the 40.62 or 40.68 Mhz band and the mode of operation. Other frequencies below 40 MHz may also be used.
W3PM/Auto-Calibrated-Si5351A-Quadrature-IQ-VFO-Project
This is a VFO using the very popular Si5351A clock generator board to generate 80 – 6 meter I/Q signals at outputs CLK 1 and CLK 2. Frequency and time accuracy are maintained by a highly accurate temperature compensated DS3231 real time clock (RTC) board.
W3PM/WSPR-VCXO-Controller
A WSPR controller using pulse width modulation (PWM) to derive narrow-band 4-FSK modulation from a voltage controlled crystal oscillator (VCXO).
W3PM/Archive
Old and superceded projects