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| Subject: | LF: G3XBM: 500kHz ERP increased by 6dB - WSPR reports please |
| From: | Roger Lapthorn <[email protected]> |
| Date: | Fri, 6 Nov 2009 16:45:46 +0000 |
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Today I modified my 500kHz antenna. The 28MHz halo up at the top of the 5-6m vertical section (which was the coax feed to the 28MHz halo) was removed and replaced by a spiral inductance/ top capacity hat consisting of around around 8 "spiralling in" turns in the space occupied by the original halo. Seeing my initial reports from M0BMU I am some 5-6dB stronger than I was before, I guess because more of the antenna current is in the vertical section. The measured antenna current is not much different though. Please listen for me on 500kHz WSPR and let me know if I am now stronger than before. 73s Roger G3XBM -- ------------------------------------------------------------- http://g3xbm-qrp.blogspot.com/ http://www.g3xbm.co.uk G3XBM GQRP 1678 ISWL G11088 |
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