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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*LF\:\s+G3XBM\'s\s+ERP\s+on\s+500kHz\s*$/: 4 ]

Total 4 documents matching your query.

1. Re: LF: G3XBM's ERP on 500kHz (score: 1): Author: Rik Strobbe <[email protected]>; Date: Sat, 23 Jan 2010 15:12:04 +0100; Roger, I simulated the antenna based on your description (with MMANA) and the current through the vertical wire seems to be quite constant. So the tophat works well and the effective height will be m; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-01/msg00099.html (10,591 bytes)
2. Re: LF: G3XBM's ERP on 500kHz (score: 1): Author: Rik Strobbe <[email protected]>; Date: Sat, 23 Jan 2010 16:15:24 +0100; Hello Roger, you can download MMANA from http://mmhamsoft.amateur-radio.ca/pages/mmana-gal.php The datafile for your antenna is attached 73, Rik ON7YD Thanks Rik. It is good to know that the your fig; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-01/msg00146.html (12,488 bytes)
3. LF: G3XBM's ERP on 500kHz (score: 1): Author: Roger Lapthorn <[email protected]>; Date: Sat, 23 Jan 2010 13:02:42 +0000; All, Yesterday I did a recalculation of the G3XBM ERP based on the classic formula and re-measurements of my antenna current. My antenna is a 5m long vertical with a spiral top hat of about 7 turns a; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-01/msg00161.html (10,098 bytes)
4. Re: LF: G3XBM's ERP on 500kHz (score: 1): Author: Roger Lapthorn <[email protected]>; Date: Sat, 23 Jan 2010 14:46:25 +0000; The simulation gives a radiation resistance of 0.074 Ohm, so with 0.12 A a radiated power just over 1mW EMRP (1.75mW ERP). In the real world it will be some dB's less (as Jim stated recently), probab; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-01/msg00174.html (12,733 bytes)

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