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| To: | [email protected] |
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| Subject: | Re: LF: Re: MiniWhip antenna |
| From: | [email protected] |
| Date: | Sun, 7 Jul 2013 22:28:27 -0230 (NDT) |
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| References: | <CAKvcm2dpuftdtK6OdQv8fOfiw+4yQrPBQBHJ-FN2gDbT4P_oMQ@mail.gmail.com> <[email protected]> <op.wzq2tgvnyzqh0k@pc-roelof> <005b01ce798a$b0476600$6d01a8c0@DELL4> <op.wzrfpjyyyzqh0k@pc-roelof> <[email protected]> <7D6B8CBB38964C9C82487F5D0F3648FC@FMVXD1232> <[email protected]> <[email protected]> <[email protected]> <[email protected]> |
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Dear Group, Today I listened to my Op32 transmissions at a remote site with aminiwhip/preamp/FT817 with internal batteries. There was 1.5 m of coax on the miniwhip. Some qualitative results: The higher the mw, the stronger the signal. The signal was weak when the mw and rig were at the same height, but therewas still a signal when the mw was below the rig. The sigs were weakest when the mw was on the ground. I think mw is responding to the field at the height of the whip (capacitive coupling) and the potential differencew between this and the capacitance to ground of rig and feedline. Does this make any sense? The TX is on 137.555 kHz OP32 0.5W erp from the tower. A 100w dummy load connected to the 100m wire gets quite hot in short order! 73 Joe VO1NA This electronic communication is governed by the terms and conditions at http://www.mun.ca/cc/policies/electronic_communications_disclaimer_2012.php |
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