[SADXA] 40m DAY DX of a Yagi vs K07SS CW Skimmer on a Dipole - Dec. 2nd

[Jim Wysocki]

Bill, I think that would be a bit too much to ask.

Jim

On 12/8/2019 7:09 PM, W7EXG (Bill) wrote:
> Jim,
>
> Thanks so much for asking Bill KO7SS to present his Skimmer Station
> operation at our SADXA meeting.
>
> What luck we have!!
>
> Another option might be for Bill to provide some kind of a U-TUBE like Video
> for show at our meeting.  This might be asking a bit too much.
>
> Thanks for your effort.
>
> Bill W7EXG
>
> -----Original Message-----
> From: sadxa-bounces at mailman.qth.net [mailto:sadxa-bounces at mailman.qth.net]
> On Behalf Of Jim Wysocki
> Sent: Sunday, December 08, 2019 4:26 PM
> To: sadxa at mailman.qth.net
> Subject: Re: [SADXA] 40m DAY DX of a Yagi vs K07SS CW Skimmer on a Dipole -
> Dec. 2nd
>
> Today I spoke to Bill about doing a "remote operation" presentation to
> us.  He can't because he works every Thursday from 8 to 8, and thus can
> never make one of our meetings.  However he's willing to show his
> operation from his home in the city to anyone who's interested.
>
> 73,  Jim
>
> On 12/3/2019 11:08 AM, W7EXG (Bill) wrote:
>> Hi Jim,
>>
>> Thanks so much for your report.
>>
>> Since you know Bill, I think it would be great for him to speak to our
>> group, regarding his skimmer operation. As a DX Club, the use of a
>> "backyard" skimmer at 8000 feet clearly has some value. Perhaps Don or
>> others could second the motion.
>>
>> I certainly agree with your low angle argument. Most 40m take off angles
> are
>> about 24 degrees, but who knows how this changes for RECEIVING 40m DX?
>> Sounds like a nice research paper.
>>
>> I do live way on the West side, where the Mt Lemon peak angle is about 5
>> deg. So for some, these mountains to EU are not an issue as you mentioned.
>>
>> What intrigued me was the 40m DX CW CQs I did observe and record here
>> yesterday [received on my 3 ele yagi] between 2145z and 2245z was not
>> recorded at all on the KO7SS CW skimmer.
>>
>> Thus, just because the skimmer is NOT recording the 40m DX, does NOT mean
> it
>> is not present and workable. However, if KO7SS does record 40m DX, it is
>> likely that many in Tucson could possibly work this DX, not withstanding
> the
>> limitations you cited.
>>
>> Thanks for your input.
>>
>> 73's
>> Bill W7EXG
>> -----Original Message-----
>> From: sadxa-bounces at mailman.qth.net [mailto:sadxa-bounces at mailman.qth.net]
>> On Behalf Of Jim Wysocki
>> Sent: Monday, December 02, 2019 9:31 PM
>> To: sadxa at mailman.qth.net
>> Subject: Re: [SADXA] 40m DAY DX of a Yagi vs K07SS CW Skimmer on a Dipole
> -
>> Dec. 2nd
>>
>> Bill, you'll need to take the KO7SS skimmer spots with a grain of salt.
>> Just because they log a call doesn't mean that some of our members will
>> be able to hear it.
>>
>> I recently was over to Bill's place on Mt. Lemmon where he has the
>> skimmer and the dipoles. The antennas are near the top of the mountain,
>> about 45 feet above the terrain, and with the one I saw having a clear
>> view towards Europe.  I don't recall seeing a second antenna but it
>> could have been there.  The net effect of the extra work is that Bill's
>> skimmer can hear some of the stations that he can't copy down at his QTH
>> in the city.  So if somebody is well-situated, i.e., far enough away
>> from the mountains that the low angled signals can be received, he
>> should be able to hear some DX that others of us who are too close to
>> the mountains can't even detect.
>>
>> 73, Jim  W9FI
>>
>> On 12/2/2019 6:45 PM, W7EXG (Bill) wrote:
>>> The following 40m DAY DX was heard CALLING CQ in Tucson Dec. 2nd, from
>> about
>>> 2145z to 2245z on my DB42 3 ele 40m Yagi on a 42 foot boom.
>>>
>>> ON4YOTA
>>> ON6DC
>>> F6BII
>>> R7DC
>>> CT9/DL5AXX
>>> CT1ZQ
>>> SP9FV
>>>
>>> The following 40m DAY DX was heard CALLING CQ in Tucson Dec. 2nd, from
>> 2145z
>>> to 2245z on KO7SS CW skimmer dipoles.
>>>
>>> NONE of the above.
>>>
>>> Although K07SS did not record the above 40m DX, it has recorded in the
>> past
>>> 40m DAY DX in this time frame. Thus, 40m DAY DX is still quite possible
>> with
>>> a dipole. Such 40m DAY DX has already been recorded here on dipole type
>> 40m
>>> antennas.
>>>
>>> 73'S
>>> BILL W7EXG
>>>
>>>
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