[SECC] SECC Activity Map and Club Circle

Jeff Clarke ku8e at ku8e.com
Tue Nov 10 12:38:01 EST 2020 

Checking the ARRL club rules for distance requirements


/Use of Six-Character Grid Locators//
//
//Locations will all be entered and displayed as six-character grid 
locators, such as FN21aw or DM02ks. //*It will no longer be necessary to 
determine latitude and longitude for members or a club circle 
center.*////*The center of the locators will be used for calculating the 
member's distance from the club center *//using a standard algorithm 
that will also be public.  A member may reside and operate anywhere in a 
six-digit locator that satisfies the distance rule.  If the grid locator 
for a member is not known, "Distance Unavailable" (or words to that 
effect) will be displayed on the list.  There are many online services 
that provide a six-character grid locator from an address or latitude 
and longitude.  The maximum circle distances are NOT changing./


It appears you have to use the center of grid squares *not *latitude and 
longitude for members QTH to calculate distance. The ARRL has a distance 
calculator - https://contest-clubs.arrl.org/griddistancecalc.php to 
check this.


Using the proposed center of *EM83vk*


K2SX -  FM03kl      286.069 km / 177.75504 miles
K4BAI - EM72ml    277.817 km / 172.6275 miles
N4DU - EM71uo    282.325 km / 175.4286 miles


This would put both K2SX and N4DU barely out side of the circle. Plus I 
forgot K4EA actually operates from his station in Chatooga County, not 
his home QTH in Canton. We don't want to lose Neil.



Using the same ARRL calculator for our current club center at *33.35577, 
-82.13733 *which is *EM83sf* :


https://www.mapdevelopers.com/draw-circle-tool.php?circles=%5B%5B281634.5%2C33.2157012%2C-82.4681823%2C%22%23AAAAAA%22%2C%22%23000000%22%2C0.4%5D%5D*
*

*
*


K2SX -   FM03kl 310.838 km / 193.1458 miles
K4BAI - EM72ml 247.966 km / 154.0789 miles
N4DU - EM71uo 249.524 km / 155.04703 miles


This definitely puts K2SX outside our circle.  K4EA probably doesn't 
realized it but with our current club center he's outside of the SECC 
circle in Chatooga County. Because Neil's home QTH is listed on QRZ.com 
in Canton, GA the ARRL doesn't know this and probably doesn't make an 
effort to check things like this. But if Neil sells his house in Canton 
and moves to Chatooga County we would need to adjust our circle.


BTW if you're interested in checking your distance go to 
https://contest-clubs.arrl.org/viewlists.php?action=list&rowid=902


Sorry Dennis I tried....


Jeff

//



On 11/10/2020 10:52 AM, Jeff Clarke wrote:
>
> Neil,
>
>
> l send me your address in Chatooga County. I can play with the map to 
> move it more towards you.
>
>
> Jeff
>
>
> On 11/10/2020 10:39 AM, Neal Sulmeyer wrote:
>> ​And now I am outside the circle at my new QTH in Chatooga County.
>>
>> Neal, K4EA
>>
>> On Tue, 11/10/2020 12:36 AM, Jeff Clarke <ku8e at ku8e.com> wrote:
>>
>>     Here is a radius map I drew at
>>     https://www.mapdevelopers.com/draw-circle-tool.php?circles=%5B%5B281634.5%2C33.398775%2C-82.1625548%2C%22%23AA4F2E%22%2C%22%23000000%22%2C0%5D%5D
>>     You can zoom in and see that K4BAI, N4DU and K2SX would be inside
>>     the 175 mile ARRL circle.
>>
>>     Jeff
>>
>>
>>     On 11/7/2020 02:35 PM, Jeff Clarke wrote:
>>>
>>>     I've updated the SECC activity map at
>>>     https://www.google.com/maps/d/edit?mid=1GT7PCEO9QeCyKw5aYEQYx755EXzkxd_h&usp=sharing
>>>     The icon with the red tower point on it is the current SECC club
>>>     center. I used the measuring tool and it appears we have it in a
>>>     good spot since just about everyone (except K2SX) is inside the
>>>     175 mile radius circle for ARRL contests.
>>>
>>>     I used the measuring tool and found a way to get possibly get
>>>     K2SX inside our circle for ARRL contests by changing the club
>>>     center to *33.35577, -82.13733* .  At this point he would be
>>>     exactly 174 miles from the circle. K4BAI who is our furthest
>>>     west member would be 173 miles from the center. N4DU our
>>>     furthest southwestern GA member would be 170 miles from the club
>>>     center. AD8J our furthest norther member would be 161 miles from
>>>     the center.  On the map see the red marker for the current SECC
>>>     club center and the black marker for the proposed club center.
>>>     Someone please double check me to see if I'm right on this.
>>>
>>>     Jeff
>>>
>>>     On 10/31/2020 03:02 PM, Jeff Clarke wrote:
>>>>
>>>>     I've become pretty proficient in Google Maps overlays (thanks
>>>>     to help from NO5W) since I started managing the GQP.  Since we
>>>>     don't have in face meetings for the club I thought it would be
>>>>     interesting to figure out where our club members are located.
>>>>     The club roster is very out of date so what I did  instead was
>>>>     go thru the activity reports for about the last year that K4BAI
>>>>     posts every week. This would be more representative of who is
>>>>     really a member of SECC. Please checkout the map at
>>>>     https://www.google.com/maps/d/edit?mid=1GT7PCEO9QeCyKw5aYEQYx755EXzkxd_h&usp=sharing
>>>>     . I was surprised to discover we still have some active members
>>>>     in both NC and SC but the majority as expected are in GA. We no
>>>>     longer have any members in AL since the formation of the ACG.
>>>>     This might be useful information if we might want to ever move
>>>>     the club circle to attract more members.
>>>>
>>>>     Hope to see everyone on the air during this Fall contest
>>>>     season. I should be active in all the major contests this Fall
>>>>     and Winter. Because of the pandemic K4BAI and I are going to
>>>>     miss going on our yearly PJ4A trip for CQWW DX CW. This is
>>>>     going to end a streak of going to either PJ4 or PJ2 going back
>>>>     to about 2004 for me. John will operating PJ4A remotely from my
>>>>     house in CQWW DX CW. If you worked PJ4V in CQWW DX SSB that was
>>>>     Marty, W1MD operating the station on Bonaire remotely.
>>>>
>>>>     73's Jeff
>>>>
>>>>
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>
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