Today's Message Index:
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0. 08:50 AM - Please Make a Contribution to Support Your Lists... (Matt Dralle)
1. 08:48 AM - voodoo antenna magic (B Young)
2. 09:08 AM - Re: voodoo antenna magic (Kirk Smith)
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| Subject: | Please Make a Contribution to Support Your Lists... |
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| Subject: | voodoo antenna magic |
quarter wave antenna systems has developed a little better than voodoo
magic. I will admit there are some antenna designs that defy logic, but
quarter wave systems are pretty much a science.
the ignition and alternator noise is generally introduced into the mix
through the power to the radio.
on a antenna with poor shielding the received signal can be
compromised...but on tx. the signal to noise ratio. (at least the noise
getting into the antenna and coax) is minimal.
but the noise getting into the radio power system, and the radio directly
gets amplified by the radio and becomes part of the signal amplified by the
radio.
double or 100 % shielded coax and an antenna father from the source of
noise should clean up the received signal, keeping the noise from getting
into and amplified by the radio is the best way to clean up the transmitted
signal.
Boyd Young
amateur extra N7WFM
Message 2
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| Subject: | Re: voodoo antenna magic |
Yep....WB8ZMY
From: B Young
Sent: Saturday, November 7, 2015 11:47 AM
Subject: Kolb-List: voodoo antenna magic
quarter wave antenna systems has developed a little better than voodoo
magic. I will admit there are some antenna designs that defy logic,
but quarter wave systems are pretty much a science.
the ignition and alternator noise is generally introduced into the mix
through the power to the radio.
on a antenna with poor shielding the received signal can be
compromised...but on tx. the signal to noise ratio. (at least the noise
getting into the antenna and coax) is minimal.
but the noise getting into the radio power system, and the radio
directly gets amplified by the radio and becomes part of the signal
amplified by the radio.
double or 100 % shielded coax and an antenna father from the source of
noise should clean up the received signal, keeping the noise from
getting into and amplified by the radio is the best way to clean up the
transmitted signal.
Boyd Young
amateur extra N7WFM
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