Mail Archive Search: <+subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*LF\:\s+73kHz\s+in\s+the\s+UK\?\s*$/>

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*LF\:\s+73kHz\s+in\s+the\s+UK\?\s*$/: 2 ]

Total 2 documents matching your query.

1. LF: 73kHz in the UK? (score: 1): Author: Roger Lapthorn <[email protected]>; Date: Tue, 28 Jan 2014 11:27:22 +0000; Is my reading of the UK frequency allocation chart right? One can operate without a licence in the old 73kHz band using licence-exempt inductive devices rules as long as the output is less than 72dBu; /rsgb_lf_group-archives/html/rsgb_lf_group/2014-01/msg00055.html (11,105 bytes)
2. Re: LF: 73kHz in the UK? (score: 1): Author: Roger Lapthorn <[email protected]>; Date: Tue, 28 Jan 2014 20:24:46 +0000; calculating ERP... Using 1/r^3 from 10 m to the radiation field boundary at 0.8 km, we get +72 - 3 * 38 dBuA/m = -42 dBuA/m, then proceeding with 1/r to 1 km and multiplying by 377 ohms H = -42; /rsgb_lf_group-archives/html/rsgb_lf_group/2014-01/msg00500.html (14,565 bytes)

Current List: 1 - 2
Page: [1]