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WSPR Projects VCXO Controller | Radioaficion Ham Radio

WSPR Projects VCXO Controller

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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).

This project provides ‘on chip’ generation of WSPR message; internal timing or NMEA GPS timing for UTC synchronization of WSPR transmissions; ‘on-the-fly’ GPS generation of grid square location for portable operation; pulse width modulation output; symbol data output; and low power consumption allowing battery operation

Download information:
PM_vcxo.PDF

PM_vcxo_V4.ASM

PM_vcxo_V4.HEX

pwm_test.ASM

pwm_test.HEX

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