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1. ULF: A new distance record on 970 Hz / 309 km band (score: 1): Author: DK7FC <[email protected]>; Date: Mon, 03 Apr 2017 13:55:41 +0200; Hi ULF friends, Saturday night i build an active E field receiver optimised for ULF. It is using a BF862 front-end as a source follower and a LT1028 with 20 dB gain. There are 3 RC filter stages cutt; /rsgb_lf_group-archives/html/rsgb_lf_group/2017-04/msg00016.html (15,431 bytes)

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