VOA Radiogram is now Shortwave Radiogram. Please visit swradiogram.net
VOA Radiogram is a Voice of America program experimenting with digital text and images via shortwave broadcasting. It is produced and presented by Dr. Kim Andrew Elliott.
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MFSK images at X1, X2, and X4 speeds
The Fldigi software from w1hkj.com includes the ability to transmit and receive MFSK images at normal speed (X1) as well as faster (X2, X4) speeds.
On VOA Radiogram during the weekend of 31 May/1 June 2014, we experimented with images in the MFSK32, MFSK64, and MFSK128 modes at the X1, X2, and X4 speeds.
Not surprisingly, the X2 and X4 speeds produced fuzzier images.
The images below were received and decoded by François in France, 31 May, during the 1600 UTC broadcast on 17860 kHz…
MFSK32 X1:
MFSK32 X2:
MFSK32 X4:
MFSK64 X1:
MFSK64 X2:
MFSK64 X4:
MFSK128 X1:
MFSK128 X2:
MFSK128 X4:
