Please re-read the results of the experiment. Tests #3 and #4 did
exactly what you are suggesting.
Larry, W0QE
Frank T Brady wrote:
> Gary,
> Is anyone evaluating the test to account for the capacitance?
> I'm sure I'm not the only one fascinated by this skin effect 'proof test'
> It's beginning to sound like one of those relativity paradoxes that
> can't be observed without the observation changing the behavior <g>
> 73, frank w0ecs
>
> On 3/22/2010 12:06 PM, Gary Schafer wrote:
>
>> You are drawing a conclusion without knowing all the information needed. The
>> disk on the antenna acts like a capacitor to the rest of the antenna.
>> Read a little on how an antenna works. It depends upon the capacitance
>> between ends for return current.
>> Placing the disk in line only looks like a fatter element at that point
>> which means more capacitance.
>>
>> 73
>> Gary k4FMX
>>
>>
>>
>>> -----Original Message-----
>>> From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com]
>>> On Behalf Of pc5m, Carel
>>> Sent: Sunday, March 21, 2010 1:03 PM
>>> To: amps@contesting.com
>>> Subject: Re: [Amps] placement of RF choke bypass cap.
>>>
>>> Bill,
>>>
>>> You are right !
>>>
>>> Changed my setup and to summarize the results:
>>>
>>> #1. With the disk, Fres = 480 MHz
>>> #2. With disk connected parallel to horizontal wire (see
>>> www.pc5m.com/skineffect2.jpg ). Fres = 260 MHz
>>> #3. With disk connected in between (no through wire at all) ( see
>>> www.pc5m.com/skineffect1.jpg) . Fres = 260 MHz
>>>
>>> I suppose I can only conclude that the RF current will/must go through
>>> the
>>> disk and not follow the long path (due to alleged skineffect) around the
>>> disk.
>>>
>>> Again a myth busted ?
>>>
>>> Gl, Carel.
>>> ---------------------------------------------
>>>
>>> ORIGINAL MESSAGE:
>>>
>>>
>>>> Try this: Measure the spacing from the bottom edge of the disk to the
>>>> ground plane, then re-solder the disk at the edge of the disk,
>>>> maintaining the same spacing. Now the disk is acting as just a
>>>> capacitor, without having the wire's RF flowing through it.
>>>>
>>>> 73, Bill W6WRT
>>>>
>>>>
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>>>
>>>
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>>
>>
>
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