[RFI] Old wives tail, or true?

[Jim Brown]

I did something similar when I owned a wood frame 2-flat on a 
residential lot in Chicago. I had an 80M dipole that was inductively 
loaded to fit between my skyhooks, and matched well on 40. I fed it with 
vintage Belden 75 ohm KW twinlead that I'd found years before at a 
hamfest. Tied both sides of the feedline together, so it became a tee 
vertical. It worked better that way on 80 than loading it as a dipole, 
because it wasn't very high (about 40 ft).

73, Jim K9YC

On 4/8/2021 8:34 AM, Joe wrote:
> Correct Jim!
> 
> This is an old trick for those that have zero room for a 160 meter 
> antenna. We often did this and loaded the whole shebang to be able to 
> get on 160.
> 
> Joe WB9SBD
> 
> On 4/8/2021 12:36 AM, Jim Brown wrote:
>> On 4/7/2021 7:38 PM, Dave Cole wrote:
>>> Is this true, and if so, why?
>>
>> No. With the shield disconnected, the antenna is different -- if 
>> there's an effective choke at the top, it's now a long wire ending at 
>> the choke, because the shield and the center are capacity-coupled 
>> together. And if there's no choke at the top, it's a top-loaded long 
>> wire.
>>
>> 73, Jim K9YC
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>