Topband: trying to tune up 80 meter 4-Square

[Wes Stewart]

Joe is correct.

On 10/12/2018 5:45 PM, Joe Subich, W4TV wrote:
> On 2018-10-12 7:10 PM, MrToby wrote:
>> You dont have to lower them but you need to short them to ground to
>> make them electrically invisible
> No, with 1/4 wave elements you must *open* the feed point - disconnect
> any feedlines and remove any components across the feedpoint - to make
> them invisible.
>
> 73,
>
>    ... Joe, W4TV
>
>
> On 2018-10-12 7:10 PM, MrToby wrote:
>> You dont have to lower them but you need to short them to ground to make
>> them electrically invisible
>>
>> On Fri, Oct 12, 2018, 6:07 PM Dick Green WC1M <wc1m73 at gmail.com> wrote:
>>
>>> Interesting. This is not how I tuned my 40m 4-square, albeit with tubular
>>> elements not slopers.
>>>
>>> Anyway, my understanding is that you disconnect all four elements from the
>>> control box and measure at the feedpoint, not through the phasing lines. I
>>> did it that way and had no trouble tuning the elements. I did, however,
>>> tune them to a frequency that was something like 5% below the target
>>> resonant frequency. I can't remember the exact frequencies now, but I think
>>> I wanted the array resonant at 7.025 MHz, so I tuned them to about 6.700
>>> MHz. Might have been a little higher than that.
>>>
>>> I've not heard that you must lower the other elements to do the tuning.
>>> Certainly a pain with nesting tubular elements.
>>>
>>> 73, Dick WC1M
>>>
>
>
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