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Re: Ferrite Sleeve Loop (FSL) antenna tests
outside
That's an interesting idea, sort of a ferrite sandwich loop.
I've narrowed my choices down to using ferrite bars, and to start with
just a single layer of the bars with one solenoid
outside
That's an interesting idea, sort of a ferrite sandwich loop.
I've narrowed my choices down to using ferrite bars, and to start with
just a single layer of the bars with one solenoid
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By
Chris Trask - N7ZWY/WDX3HLB
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#14050
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Re: Ferrite Sleeve Loop (FSL) antenna tests
there
I never said that the currents would be passing oppositely. The
solenoid on the inside of the sleeve and the solenoid on the outside of the
sleeve are connected in seies so that their
there
I never said that the currents would be passing oppositely. The
solenoid on the inside of the sleeve and the solenoid on the outside of the
sleeve are connected in seies so that their
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By
Chris Trask - N7ZWY/WDX3HLB
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#14049
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Re: Ferrite Sleeve Loop (FSL) antenna tests
Any guesses on how this approach might work:
A Litz wire solenoid coil, with ferrite rods both on the inside and outside of the wire coil.
I other words, it's a standard FSL (Ferrite Sleeve Loop),
Any guesses on how this approach might work:
A Litz wire solenoid coil, with ferrite rods both on the inside and outside of the wire coil.
I other words, it's a standard FSL (Ferrite Sleeve Loop),
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By
Christopher Wendling
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#14048
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Re: Ferrite Sleeve Loop (FSL) antenna tests
Hi Chris.
I have not seen all the posts here so I am not aware of Paul's suggestion, but two windings with currents passing oppositely will cancel whether there is a ferrite sleeve between them or
Hi Chris.
I have not seen all the posts here so I am not aware of Paul's suggestion, but two windings with currents passing oppositely will cancel whether there is a ferrite sleeve between them or
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By
graham.maynard1
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#14047
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Re: Ferrite Sleeve Loop (FSL) antenna tests
whether
Ooops! Graham is correct here. With the currents in the two windings
being in the same direction they will cancel out. This being the case,
Paul's idea of two solenoids, one along the
whether
Ooops! Graham is correct here. With the currents in the two windings
being in the same direction they will cancel out. This being the case,
Paul's idea of two solenoids, one along the
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By
Chris Trask - N7ZWY/WDX3HLB
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#14046
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Re: Ferrite Sleeve Loop (FSL) antenna tests
I would have to disagree here. The magnetic flux along the surface of
the rod should be uniform, or at least in the same direction. And the
current passing through the conductors is also in the
I would have to disagree here. The magnetic flux along the surface of
the rod should be uniform, or at least in the same direction. And the
current passing through the conductors is also in the
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By
Chris Trask - N7ZWY/WDX3HLB
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#14045
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Re: Additional source of Litz wire
Hi Chris:
Thus far I have only used passive coupling to a portable receiver's internal ferrite, so no direct connection to a receiver.
Graham Maynard's article mentions that he connected one leg of
Hi Chris:
Thus far I have only used passive coupling to a portable receiver's internal ferrite, so no direct connection to a receiver.
Graham Maynard's article mentions that he connected one leg of
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By
Kevin Schanilec
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#14044
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Re: Ferrite Sleeve Loop (FSL) antenna tests
Hi Chris,
Basket weave through the rods won't work because coil induction will set up opposite electron orbit spin directions in the ferrite if passing inside a rod on one turn and outside on
Hi Chris,
Basket weave through the rods won't work because coil induction will set up opposite electron orbit spin directions in the ferrite if passing inside a rod on one turn and outside on
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By
graham.maynard1
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#14043
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Re: Additional source of Litz wire
Let me rephrase the question: How are you connecting the FSL loop to
the cable or receiver?
Chris
Let me rephrase the question: How are you connecting the FSL loop to
the cable or receiver?
Chris
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By
Chris Trask - N7ZWY/WDX3HLB
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#14042
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One New XE Logged
I finally found some time to DX from my new QTH here in Ponca City. This new location is great, with one exception....electrical noise. Nevertheless one new station was added to the ULR log this
I finally found some time to DX from my new QTH here in Ponca City. This new location is great, with one exception....electrical noise. Nevertheless one new station was added to the ULR log this
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By
kirk74601 <kirk74601@...>
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#14041
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Ultralight Longwave DX- 4 New NDB's (and State #11)
Hello All,
The LW band certainly was back to normal here last night, and maybe
even a little exceptional. I knew something was ujp when I tuned in to
413 kHz around 0600 UTC (10 PM local time), and
Hello All,
The LW band certainly was back to normal here last night, and maybe
even a little exceptional. I knew something was ujp when I tuned in to
413 kHz around 0600 UTC (10 PM local time), and
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By
Gary DeBock
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#14040
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Re: Additional source of Litz wire
Using the PL-380 or other DSP set, an FSL this small generally has to be right up next to the antenna on LW in order for the antenna to take over the front end, since these are not as sensitive on LW
Using the PL-380 or other DSP set, an FSL this small generally has to be right up next to the antenna on LW in order for the antenna to take over the front end, since these are not as sensitive on LW
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By
Kevin Schanilec
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#14039
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Re: Additional source of Litz wire
Something that I've been meaning to ask is how you are coupling the FSL
to the receiver? I've been looking at the FSL as being suitable as a higher
performing substitute for a ferrite rod
Something that I've been meaning to ask is how you are coupling the FSL
to the receiver? I've been looking at the FSL as being suitable as a higher
performing substitute for a ferrite rod
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By
Chris Trask - N7ZWY/WDX3HLB
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#14038
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Re: Additional source of Litz wire
Hi Chris/all:
I have #46 currently on my FSL, and it does a good job on LW, although it has 175 strands, which may be helping quite a bit. This Litz from Xizi seems to have a higher/broader range
Hi Chris/all:
I have #46 currently on my FSL, and it does a good job on LW, although it has 175 strands, which may be helping quite a bit. This Litz from Xizi seems to have a higher/broader range
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By
Kevin Schanilec
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#14037
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Re: Additional source of Litz wire
That's quite a variety of Litz wire that he has. The 10-44 and 10-46
(maybe the 16-38) would be very nice for MW antennas while the 20-44 and
20-46 would be better for LW. The higher strand
That's quite a variety of Litz wire that he has. The 10-44 and 10-46
(maybe the 16-38) would be very nice for MW antennas while the 20-44 and
20-46 would be better for LW. The higher strand
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By
Chris Trask - N7ZWY/WDX3HLB
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#14036
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NE Oregon ULR NDB DX, Monday night
Despite some static, conditions were decent. 245 total.
Steve
NE Oregon
PL380, FSL
242 EL TX 1135 MI 335 YLD ON CAN 1629 MI 344 YC AB CAN 420 MI 356 ODX NE 986 MI 361 E3 AB CAN
Despite some static, conditions were decent. 245 total.
Steve
NE Oregon
PL380, FSL
242 EL TX 1135 MI 335 YLD ON CAN 1629 MI 344 YC AB CAN 420 MI 356 ODX NE 986 MI 361 E3 AB CAN
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By
Steve Ratzlaff <steveratz@...>
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#14035
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Re: Took the plunge
Welcome to the group, Chris.
I'm DXing from the Valley on PL310, PL380 (with 7.5" plug-inloopstick) and Sony SRF-59 (still my favorite ULR). Logged some TPstations last Fall even from here in Studio
Welcome to the group, Chris.
I'm DXing from the Valley on PL310, PL380 (with 7.5" plug-inloopstick) and Sony SRF-59 (still my favorite ULR). Logged some TPstations last Fall even from here in Studio
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By
David Alpert
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#14034
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Re: Took the plunge
MW DX in the LA/OC Basin is a bit tough as virtually every channel slot is occupied and ground wave propagation over the mountains is nil. Still, along the coast, I am able to receive up to San
MW DX in the LA/OC Basin is a bit tough as virtually every channel slot is occupied and ground wave propagation over the mountains is nil. Still, along the coast, I am able to receive up to San
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By
kevin asato <kc6pob@...>
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#14033
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Additional source of Litz wire
Hi all:
For those who are thinking of getting some Litz wire, there is now another vendor on eBay, seller "zlowe7", who is Scott Lowe who lives in Middletown, Ohio. He stocks a variety of grades of
Hi all:
For those who are thinking of getting some Litz wire, there is now another vendor on eBay, seller "zlowe7", who is Scott Lowe who lives in Middletown, Ohio. He stocks a variety of grades of
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By
Kevin Schanilec
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#14032
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ULR DX.....BEACONS......One New Beacon Tonight........
HI Guys:
Conditions have been Bad here the past 3-4 Days...and I've not heard much of anything lately!! Both the AM BCB and NDB Band have been miserable. Nothing here on BCB @ Sunset again
HI Guys:
Conditions have been Bad here the past 3-4 Days...and I've not heard much of anything lately!! Both the AM BCB and NDB Band have been miserable. Nothing here on BCB @ Sunset again
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By
robert ross
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#14031
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