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Re: ferrite vs sensitivity
The answer is complex, but does use a non-calculus approach. For a given inductance, The selectivity and sensitivity are both optimzed when the following conditions are met:
1.) The coil is centered
The answer is complex, but does use a non-calculus approach. For a given inductance, The selectivity and sensitivity are both optimzed when the following conditions are met:
1.) The coil is centered
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By
ferrite61 <dxrx@...>
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#11790
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Puyallup, WA Ultralight TP's for 10-20
Hello All,
After yesterday's lackluster TP propagation itseemed like things could only improve, and a 1300 UTC band scan on the modifiedICF-2010 did show several promising carriers, on
Hello All,
After yesterday's lackluster TP propagation itseemed like things could only improve, and a 1300 UTC band scan on the modifiedICF-2010 did show several promising carriers, on
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By
Gary DeBock
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#11792
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Re: Possible El Cajon / La Mesa, CA TPs 2010-10-20, incl. a st...
Hi Stephen,
It appears that your TP-DXing was quite successful this morning, especiallyin comparison to the DXers in western Washington and BC (who apparently sufferedthrough an Asian propagation
Hi Stephen,
It appears that your TP-DXing was quite successful this morning, especiallyin comparison to the DXers in western Washington and BC (who apparently sufferedthrough an Asian propagation
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By
Gary DeBock
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#11791
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Re: ferrite vs sensitivity
Hi Richard:
My understanding is that there are more factors beside ferrite length, including the quality of
ferrite material, the diameter, the type of Litz wire, and probably others. MY guess is
Hi Richard:
My understanding is that there are more factors beside ferrite length, including the quality of
ferrite material, the diameter, the type of Litz wire, and probably others. MY guess is
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By
satya@sounddsl.com <satya@...>
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#11789
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ferrite vs sensitivity
The sensitivity of my ICF-S5W and ICF-EX5 with their 6.375" bars is the equal of my PR-D5 with it's 8" bar. If constructed properly, should there be an expectation of greater daytime sensitivity with
The sensitivity of my ICF-S5W and ICF-EX5 with their 6.375" bars is the equal of my PR-D5 with it's 8" bar. If constructed properly, should there be an expectation of greater daytime sensitivity with
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By
lrdheat
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#11788
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Oklahoma DX 10-20-10
Medium wave DX was somewhat different here overnight. At mid-evening I noticed several TA signals which caused me stay up past my usual bedtime.
Trans-Atlantic DX using Tecsun PL-310 with 7.5-inch
Medium wave DX was somewhat different here overnight. At mid-evening I noticed several TA signals which caused me stay up past my usual bedtime.
Trans-Atlantic DX using Tecsun PL-310 with 7.5-inch
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By
bbwrwy
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#11787
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Possible El Cajon / La Mesa, CA TPs 2010-10-20, incl. a strong one in my RF Zoo
Hi all...
Well, this morning from around 5:40am to around 7:10am, I had nothing better to do (well, ok, I guess I could have slept), so I broke out the Tecsun PL-380 and Select-A-Tenna to see if I
Hi all...
Well, this morning from around 5:40am to around 7:10am, I had nothing better to do (well, ok, I guess I could have slept), so I broke out the Tecsun PL-380 and Select-A-Tenna to see if I
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By
pianoplayer88key
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#11786
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Newfoundland Ultralight Trans - Atlantics Report Oct 19 - 20
Hello Everyone
Trans-Atlantic reception last evening here in Newfoundland was a mixed affair with many of the more commonly heard stations such as 1521 Saudi Arabia and 1575 United Arab Emirates in
Hello Everyone
Trans-Atlantic reception last evening here in Newfoundland was a mixed affair with many of the more commonly heard stations such as 1521 Saudi Arabia and 1575 United Arab Emirates in
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By
Allen Willie
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#11785
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St. John's, Newfoundland Morning Dx Session Oct 20/10
Greetings To All
Listened from 9:00 UTC – 9:50 UTC this morning
The band signals this morning seemed very anemic with not much in the way of distant DX, Only the two Quebec stations were of any
Greetings To All
Listened from 9:00 UTC – 9:50 UTC this morning
The band signals this morning seemed very anemic with not much in the way of distant DX, Only the two Quebec stations were of any
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By
Allen Willie
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#11784
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Re: The Southern CCrane SWP Slider
Hi Rick,
Thanks for your detailed testing of the SWP Slider's resistance tooverload, which is much appreciated.
It's true that the stock C.Crane SWP model has somewhat of aproblem with image
Hi Rick,
Thanks for your detailed testing of the SWP Slider's resistance tooverload, which is much appreciated.
It's true that the stock C.Crane SWP model has somewhat of aproblem with image
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By
Gary DeBock
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#11783
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Re: Gary Deacon - Castle Rock Dxpedition
Hello Gary,
I just looked through your entire Dxpedition report from Castle Rock recently posted and reading all the information and listening to your great audio clips. The 6WF recording alone is
Hello Gary,
I just looked through your entire Dxpedition report from Castle Rock recently posted and reading all the information and listening to your great audio clips. The 6WF recording alone is
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By
Allen Willie
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#11781
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Re: LINE OF SIGHT
wa8lcz writes...
Nice!
Here are a few more..
The FCC site:
http://www.fcc.gov/mb/audio/bickel/distance.html
http://www.distancefromto.net/
How Far Is It? by
wa8lcz writes...
Nice!
Here are a few more..
The FCC site:
http://www.fcc.gov/mb/audio/bickel/distance.html
http://www.distancefromto.net/
How Far Is It? by
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By
Ken Kizer
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#11780
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Re: Oklahoma TP's 10-19-10
Gary:
I also have to thank you for posting your daily log. It's one of the few ways I know about what is going within a day of stations being log.
I was hoping to hear a DU this season but it now
Gary:
I also have to thank you for posting your daily log. It's one of the few ways I know about what is going within a day of stations being log.
I was hoping to hear a DU this season but it now
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By
bbwrwy
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#11779
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Re: Dxpedition to Castle Rock, Cape Peninsula, South Africa - ...
Hi Gary,
Like Allen, I have also read and enjoyed yourOctober 15-16 Ultralight DXpedition report from Castle Rock, and listened to allthe MP3 recordings. As usual, both your DXing results and
Hi Gary,
Like Allen, I have also read and enjoyed yourOctober 15-16 Ultralight DXpedition report from Castle Rock, and listened to allthe MP3 recordings. As usual, both your DXing results and
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By
Gary DeBock
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#11782
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LINE OF SIGHT
HI JERRY,
I use Google maps at
http://www.daftlogic.com/projects-google-maps-distance-calculator.htm
byron wa8lcz nr detroit mi
HI JERRY,
I use Google maps at
http://www.daftlogic.com/projects-google-maps-distance-calculator.htm
byron wa8lcz nr detroit mi
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By
wa8lcz
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#11777
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Re: The Southern CCrane SWP Slider
On 10/19/2010 3:02 AM, D1028Gary@... wrote:
>The SWP Slider model has outstanding resistance to overload, which makes it ideal for use with the 9' loop. In this respect,
On 10/19/2010 3:02 AM, D1028Gary@... wrote:
>The SWP Slider model has outstanding resistance to overload, which makes it ideal for use with the 9' loop. In this respect,
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By
rick robinson <w4dst@...>
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#11776
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Dxpedition to Castle Rock, Cape Peninsula, South Africa - 15th and 16th October
Hi All
I've been following the recent detailed TP and TA DXing reports with interest and thought that I would share the results together with a few interesting mp3 audio clips from two recent evening
Hi All
I've been following the recent detailed TP and TA DXing reports with interest and thought that I would share the results together with a few interesting mp3 audio clips from two recent evening
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By
freetodx
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#11775
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Puyallup, WA Ultralight TP's for 10-19
Hello All,
Even though a TP band scan with the modifiedICF-2010 around 1300 (prior to breakfast) showed promising carriers onfrequencies like 639, 648 and 738, these signals seemed to fade
Hello All,
Even though a TP band scan with the modifiedICF-2010 around 1300 (prior to breakfast) showed promising carriers onfrequencies like 639, 648 and 738, these signals seemed to fade
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By
Gary DeBock
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#11778
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Re: Oklahoma TP's 10-19-10
Hi Richard,
Thanks again for your detailed TP-DXing report this morning, which ishelpful to the west coast DXers in tracking propagation changes duringthe period just prior to our local sunrise. In
Hi Richard,
Thanks again for your detailed TP-DXing report this morning, which ishelpful to the west coast DXers in tracking propagation changes duringthe period just prior to our local sunrise. In
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By
Gary DeBock
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#11774
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Oklahoma TP's 10-19-10
Propagation favored signals from southerly senders this morning. It was made worse by local thunderstorms. Receivers: Etón E100 (barefoot) and Tecsun PL-310 with 7.5-inch loopstick. Local sunrise
Propagation favored signals from southerly senders this morning. It was made worse by local thunderstorms. Receivers: Etón E100 (barefoot) and Tecsun PL-310 with 7.5-inch loopstick. Local sunrise
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By
bbwrwy
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#11773
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