[TowerTalk] 4 SQ issue

[Mpridesti]

Jorge

I am using the Comtek box. 

Regards,

Mark, K1RX


> On Nov 2, 2021, at 2:44 PM, Jorge Diez - CX6VM <cx6vm.jorge at gmail.com> wrote:
> 
> 
> Hello Mark
> 
> what 4SQ box do you use? DXE or homemade?
> 
> Sometimes, after several days that I not use my DXE-TFS4, antennas show high SWR, I need to TX with high power to return them to low SWR
> 
> 73,
> Jorge
> CX6VM/CW5W
> 
>> El mar, 2 nov 2021 a las 12:41, Mpridesti via TowerTalk (<towertalk at contesting.com>) escribió:
>> My 80 m 4 SQ seems to work well in 3 positions. To the SW the signal drop in the favored direction where the other 3 directions appear to work well. 
>> 
>> SWR measurements seem normal around 2:1 at the end of the 1/4 wave 75 ohm lines except one which is 1.87. Haven’t made loss measurements yet but I suspect the lowest SWR line is the problem (low reading due to higher than normal loss making it the suspect line). 
>> 
>> Has anyone else experienced this type of behavior?  Also the suspect line is the NW element and the direction which has the problem is SW. Does this make sense? Effectively this lossy element is the other half of the “driven element “ if you thought of the 4 sq as a 3 el vertical beam. 
>> 
>> Keeping with this concept, one would think the NE direction would have similar loss but it doesn’t (or it’s not noticeable). 
>> 
>> Regards,
>> 
>> Mark, K1RX
>> 
>> 
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> 
> 
> -- 
> 73,
> Jorge
> CX6VM/CW5W