[TowerTalk] 4 square for 80

[Joe Subich, W4TV]

On 9/25/2016 12:48 PM, jimlux wrote:
 > One could of course make the transmission lines 3/4 wavelength long,

Which would, in turn, reduce the bandwidth of the cables by a factor
of three and similarly increase losses in the cables which operate at
significant SWR both of which would negatively impact operation of the
4 square on a "wide" band like 80/75 meters.

73,

    ... Joe, W4TV


On 9/25/2016 12:48 PM, jimlux wrote:
> One could of course make the transmission lines 3/4 wavelength long, and
> have plenty of length to wrap dozens of turns on however many cores
> spaced however frequently along the length of the cable.
>
>
>
>
> On 9/25/16 9:25 AM, Jim Brown wrote:
>> I see.
>>
>> 73, Jim
>>
>> On Sun,9/25/2016 5:41 AM, Joe Subich, W4TV wrote:
>>> Jim,
>>>
>>> The problem is that, in that application, the cables must be 1/4 wave
>>> long electrically.  That already makes them shorter than desired and
>>> "wound" chokes on each end would shorten them by another 5-7 feet
>>> making the spacing of the 4 square much too small.
>>
>> On Sun,9/25/2016 6:49 AM, Steve London wrote:
>>
>>> What problem(s) are we attempting to solve with chokes on the 4-square
>>> feedlines ?
>>>
>> Noise.
>>
>
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