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500 kHz Projects - Receivers

0-500 Khz converter to 4Mhz by CT2GQV
This was part of a NAVTEX receiver experiment. NAVTEX signals are around 490 and 518 Khz so I first built an PLL oscilator for those frequencies (for a DC receiver) but the PLL never worked like I wished so the idea was first to make the conversion to 4Mhz and then built a direct receiver around that frequency.
http://speakyssb.blogspot.com/2009/06/0-500-khz-converter-to-4mhz.html

500 - 515 kHz Preselector by W1VD
The 500 - 515 kHz preselector described here was built for use ahead of the station receivers at WE2XGR/2 - primarily to reduce mixing/intermodulation products from AM broadcast stations.
http://www.w1vd.com/500khzpreselector.html


Creation date : 09/10/2011 @ 14:09
Last update : 23/09/2018 @ 15:22
Category : 500 kHz Projects
Page read 17847 times


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