[Elecraft] K4 Experience

[N4ZR]

I'd suggest this is a better question for Towertalk or the RFI reflector

73, Pete N4ZR
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On 7/6/2021 9:52 AM, steve WB3LGC wrote:
> I'll ask a similar question...
>
> I use a horizontal 80m loop fed with ladderline.  I have a 1:1 choke 
> at the ladderline to coax connection with 10 feet to the tuner.  My 
> noise is a lot less than it was long ago...  The noise may be gone, or 
> the balun helps, or it was a different antenna. Should I change anything?
>
> The real Q...  Portable I use a 135' dipole with ladderline and a 
> choke at the tuner.  Would I be better off using coax and a choke to 
> feed the antenna??  I do like the multi band capability of the 
> ladderline (450 ohm) center fed "zepp".
>
> my choke is (2) FT240-31's with 12 turns RG-8x.
>
> 73, steve WB3LGC
>
> On 7/6/21 12:33 AM, Robert G Strickland via Elecraft wrote:
>> Does the choke cause a significant sag in the antenna? For 40m maybe 
>> not; my 80m dipole with a choke looks like a V antenna, and I'm 
>> reluctant to increase the tension in the support ropes to the point 
>> where the the antenna starts to flatten out.
>> ...robert
>>
>> On 6 Jul 2021 02:30, Jim Brown wrote:
>>>
>>> An important part of the antenna system is a serious common mode choke
>>> at the feedpoint if each antenna, so that current coupled from the
>>> feedline doesn't fill in the antenna's nulls.
>>>
>>> 73, Jim K9YC
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