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LF: My tiny test on MiniWhip

from [間　幸久/JA5FP] [Permanent Link][Original]
To: <[email protected]>
Subject: LF: My tiny test on MiniWhip
From: 間　幸久/JA5FP <[email protected]>
Date: Sat, 13 Jul 2013 12:42:49 -0000
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References: <CAKvcm2dpuftdtK6OdQv8fOfiw+4yQrPBQBHJ-FN2gDbT4P_oMQ@mail.gmail.com> <[email protected]> <op.wzq2tgvnyzqh0k@pc-roelof> <005b01ce798a$b0476600$6d01a8c0@DELL4> <op.wzrfpjyyyzqh0k@pc-roelof> <[email protected]> <7D6B8CBB38964C9C82487F5D0F3648FC@FMVXD1232> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <001601ce7c95$f235b360$6401a8c0@JAYDELL> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <op.wz4k19tayzqh0k@pc-roelof> <[email protected]>
Reply-to: [email protected]
Sender: [email protected] 
Hi all,
I have put a test that I receive stable signal with a packaged RX system varing antenna element configuration. 
Signal source is from 594kHz BC 64.7km apart, which is
vertically polarized.
Receiving system consists of MiniWhip , ATT, MF band
AM receiver(Icom IC-R5) and 9V baterry. They all are put in a metalic box for sealding. See attached picture. 
Measureing was done by connect or disconnect the receiver
input terminal to antenna element(s) and case-conductor or earth rod. 
The result data is written on field-test.pdf file. So, summaries
are:
(1) Best performance in VH5 and VH6
(2) 9dB inferior than vertical element in HH5 and HH6
(3) 2dB inferior since case is isolated in VH2 and VH3
(4) Ground-side element does not effective if RX has some
    capacity between surrounded case
(5) Ground rod have no effect in VL3 and VL6
(6) If I touch my finger with case conductor, performance comes down Thus, G-side element and case work as counterpoise. 
73 Yuki/JA5FP

Attachment: field-test.pdf
Description: Adobe PDF document

Attachment: tester.jpg
Description: JPEG image

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