[TowerTalk] t type antenna

[Lux, Jim]

On 12/19/22 8:28 AM, Stan Stockton wrote:
> 350 feet is about 5 quarter wavelengths at 3.8 MHz.  Quarter wavelength is about 65 feet or so.  If that thing is really 350 feet long you should see resonance at about 700 kHz, in addition to every odd multiple of a quarter wavelength.  Was there a typo or is this really an inverted L that is 350 feet long?
>
> Stan, K5GO

It is, I think, about 175 feet either side of the vertical part. So, 
electrically, it might be more like a 50+175 foot wire, roughly 70 
meters.  But it's really more of a capacitive top hat on a 50 foot vertical.



> Sent from my iPhone
>
>> On Dec 19, 2022, at 2:57 AM, w5jmw at towerfarm.net wrote:
>>
>> Hello all.I have a t antenna.50ft vertical and roughly 300 ft ntip to tip horizontal.I get a nice drop and resonance at abt 3.8 mhz.Is this weird resonant point normal??I would think it would be lower.I have another at abt 2.2 but almost a 3-1 swr..Normal ? I have used an inverted l before and resonant was abt right with a 1/4 wave length..thanks..john
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