[TowerTalk] MACAntenna

[David Gilbert]

I give up ...

Dave   AB7E


Rex Lint wrote:
> Dave,
>
> I was thinking that a radiator had 2 ends.  You corrected me:  it has an
> end.  I was referring to what must be a beginning. Therefore I agree.  At
> the beginning, however, there is some current flow.
>
>       -Rex-
>  
>      K1HI
>        Rex Lint
>        Merrimack, NH 
>
> -----Original Message-----
> From: towertalk-bounces at contesting.com
> [mailto:towertalk-bounces at contesting.com] On Behalf Of David Gilbert
> Sent: Thursday, May 21, 2009 12:52 AM
> To: Rex Lint
> Cc: 'TowerTalk'; 'Arthur Trampler'
> Subject: Re: [TowerTalk] MACAntenna
>
>
> No it doesn't.  The end is the end, and there isn't any current flow at 
> the end of a wire ... unless you have arcing out into the air or 
> something obscure like that..
>
> Besides, he was clearly referring to the portion of the wire connected 
> to the relays.  That's an end.
>
> Dave   AB7E
>
>
>
> Rex Lint wrote:
>   
>> "And no, the voltage is a maximum at the end of a radiator ... how can 
>> you have current flow at that point when there is no place for it to
>>     
> go???"
>   
>> ... depends on which end...
>>
>>       -Rex-
>>  
>>      K1HI
>>        Rex Lint
>>        Merrimack, NH
>>
>>
>> -----Original Message-----
>> From: towertalk-bounces at contesting.com
>> [mailto:towertalk-bounces at contesting.com] On Behalf Of David Gilbert
>> Sent: Wednesday, May 20, 2009 2:48 PM
>> To: Arthur Trampler; TowerTalk
>> Subject: Re: [TowerTalk] MACAntenna
>>
>>
>> That's like saying a 2 inch air gap is going to break down at the same 
>> voltage as a 1 inch air gap because the first inch will break down and 
>> then the second.
>>
>> And no, the voltage is a maximum at the end of a radiator ... how can 
>> you have current flow at that point when there is no place for it to go???
>>
>> Dave   AB7E
>>
>>
>>
>>
>> Arthur Trampler wrote:
>>   
>>     
>>> By putting two relays in series, don't you create a situation where there
>>>     
>>>       
>> would be a voltage breakdown nearest the RF, and then a second voltage
>> breakdown/arc at the second relay?
>>   
>>     
>>>  
>>> I guess I'm not seeing how two in series increases voltage handling, as
>>>       
> to
>   
>>>     
>>>       
>> me it would seem that the relay with RF on one side is still the same size
>> and as prone to arcing at a given voltage.
>>   
>>     
>>>  
>>> However, isn't voltage at a minimum at the end of a full-sized 1/4 wave
>>>     
>>>       
>> radiator (half of a dipole) and current at a maximum?
>>   
>>     
>>>  
>>> Art
>>>     
>>>       
>> _______________________________________________
>>
>>
>>
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>>   
>>     
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