Fw: [TenTec] Capture area (was 80 meter loops)

[Jason Buchanan]

JAMES HANLON wrote:

>>>Excellent.  Would that same .28 wavelength value carry for all bands or
>>>specific to a single band?
>>
>>Yes, the same 0.28 wavelength value carries over for all bands.  That's a 
>>number that I "eye-balled" from figure 18A on page 24 of the book that I 
>>recommended to you.

...

>>From my ARRL Handbook, the length (feet) of a half-wave in space is 
>>492/Freq (mHz) .  In words, that's 492 divided by the frequency in 
>>megahertz.  The book goes on to say that the actual length of a half-wave 
>>antenna will be shorter, depending upon the diameter of the wire used and 
>>because of the capacitive loading effect of the end insulators.  They 
>>suggest using Length (feet) = 468/Freq(mHz) for wire antennas at 
>>frequencies up to 30 mHz. Remember that is the length for a HALF 
>>wavelength.  You have to double that to get a full wavelength.

Depending on whether you use 468 or 492 to calculate the length, 
muliplied by 2, then divided by .28 a 40 meter .28 wavelengths antenna 
comes out pretty close to 40 feet.


I will have to try this out later this week.


Thanks!
jason