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| Subject: | Re: LF: 136.96kHz testing |
| From: | Roger Lapthorn <[email protected]> |
| Date: | Sun, 18 Jul 2010 20:50:45 +0100 |
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The measured power out from the PA is actually 250mW going into the earth electrodes. As a test I connected a PA0RDT designed active antenna run from a 9V PP3 battery and connected this to the (deaf at 136kHz) FT817 and went for my walk across the fields. The signal was copyable (not strong) at 0.4km with 10wpm CW. Signal was stronger if I held the E-field probe above my head. Those of you like Mal who work multiple continents on the band will thing this is nothing, but it gives me a starting point from which to progressively improve my system. I'm just amazed that 250mW into earth electrodes 20m apart can be heard Q5 at 0.4km with a 19 inch whip handheld. More fun next week... 73s Roger G3XBM On 18 July 2010 17:14, Roger Lapthorn <[email protected]> wrote: This is the very beginning of my journey onto 136kHz.... -- http://g3xbm-qrp.blogspot.com/ http://www.g3xbm.co.uk http://www.youtube.com/user/g3xbm G3XBM GQRP 1678 ISWL G11088 |
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