Jordan Dobrikin <jjdobrikin@...>
Hi I am forwarding this to ultralight dx who can be of more help, also the have a couple of FSL Loop Antennas for sale.
Basically a LARGE Ferrite cylindrical bundle made up of many Ferrite rods with a Litz wire coil. Go to the Yahoo Group ultralight dx for Photos and Descriptions
27194Re: New FSLExpand Messages Hi Dean,
Thanks for sharing the great news of your FSL antenna experimentation, and I'm happy that you are making progress!
Steve and I were two of the original FSL experimenters after Graham's article was published, and we came to agreement on most (if not all) of the design factors. Steve made the most successful Longwave FSL, receiving far more NDB's than anyone else. I went more in the direction of fanatical MW FSL's, especially those designed for rugged survival at wild ocean cliff sites.
Please be sure to share your FSL discoveries with the rest of us, and we will be happy to share ours with you. This winter I've already come up with 7 new Medium Wave FSL designs, including a couple of "Frequent Flyer" designs made to be "airport friendly" for long-range travel DXing (based on the 100mm and 62mm ferrite bars). There have also been discoveries regarding FSL cumulative gain, and sub-miniature models which perform much better than anyone would guess (because of the new 1162/46 Litz wire). Good luck!
73, Gary DeBock (in Puyallup, WA, USA)
This design is actually a more compact version of the 2012-year 5" FSL antenna (which also had a full construction article), which was tested and found to be competitive with a 4 foot (1.22m) air core box loop. By replacing the 660/46 Litz wire with the newer, more sensitive 1162/46 type and augmenting the ferrite sleeve with slightly longer rods, this compact "airport-friendly" design matches the high gain performance of the larger 2012 model. Protected by a matched-size plastic tote packed in hand-carry luggage, it was designed to be compact and rugged, and fully up to the challenge of frequent air travel. Already these "airport-friendly" FSL antennas have successfully passed through TSA screening 7 times here on the west coast, and have provided high-gain DXing excitement for both Craig Barnes and me during our April Hawaii DXpeditions. The article includes FSL operating tips (useful for any FSL antenna) and recommendations for travel DXing. Good luck to all who accept the challenge!
Gary DeBock (in Puyallup, WA, USA)
I have for sale two 7.5" X 7.5" FSLs. The FSLs are wound with a 2 coil Polydorff configuration. The windings were wound with 660/46 Litz wire and the variable capacitor is one of the high Q, 2 gang, Russian units with a 3:1 reduction. I added a band switch so the second gang can be switched in for extended band coverage. Each of the FSLs have 3 rows of ferrite bars, totaling 120 bars. The FSLs are mounted on a Lazy Susan base. Band (1) tunes from 2,000 to 420 KHz and Band (2) tunes from 575 to 275 KHz. The tuning is sharp and the rotational nulls are quite sharp. The FSLs are setup for induction coupling. I am asking $300 each, plus what ever the shipping cost would be. Below are pictures of one of the FSLs. If interested please contact me off list everettsharp@.... Everett N4CY
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On Tue, Aug 1, 2017 at 12:48 PM, 'Roger Jeanfaivre' k1pai@... [icf2010] <icf2010@...> wrote:
Hi Jordan:
I'm a sightless owner of the ICF-2010, my third
radio since the early 1990's. I picked up the latest radio back in February, and
I'm sorry I ever sold the other two. A sighted friend is building me a cable
with diode protection, so I can connect in my 120 foot receive wire, normaly
used on a Kenwood r5000. Not that I do a lot of air travel, but, just might be
interested in your post about the FSL antenna. Could you distribe to me
visually, what this antenna is, and what frequencies you listen on? I'm 70, and
have been in ham radio for 57 years.
thanks and 73
Roger
k1pai
Wethersfield, CT
Hi
Interesting use of Sony ICF-2010,
Capabilities of Ferrite Sleave Loop, FSL, Antennas.
ultralightdx@...
Group Description: A discussion area to support
the growth of Ultralight MW Radio DXing
27319Airport-Friendly 3.5 inch
FSL-- "Heathkit-like" Construction Article
Expand
Messages
-
This design is actually
a more compact version of the 2012-year 5" FSL antenna (which also had a
full construction article), which was tested and found to be competitive with
a 4 foot (1.22m) air core box loop. By replacing the 660/46 Litz wire
with the newer, more sensitive 1162/46 type and augmenting the
ferrite sleeve with slightly longer rods, this compact "airport-friendly"
design matches the high gain performance of the larger 2012 model.
Protected by a matched-size plastic tote packed in hand-carry luggage, it was
designed to be compact and rugged, and fully up to the challenge of
frequent air travel. Already these "airport-friendly" FSL antennas have
successfully passed through TSA screening 7 times here on the west coast, and
have provided high-gain DXing excitement for both Craig Barnes
and me during our April Hawaii DXpeditions. The article includes FSL
operating tips (useful for any FSL antenna) and recommendations for travel
DXing. Good luck to all who accept the challenge!
Gary DeBock (in Puyallup, WA,
USA)
Thanx
73 de Jordan ve7jjd
---------- Forwarded message ---------- From: D1028Gary@...
[ultralightdx] <ultralightdx@...>Date:
Tue, Aug 1, 2017 at 10:41 AM Subject: [ultralightdx] Oregon Cliff (Rockwork
4) Ultralight DU's for 8-1 To: ultralightdx@...
Thanks to Steve for his report from
Arizona. The largest collection of ferrite this side of the Ukraine rolled over
the Columbia River bridge to Oregon at 0130 local time this morning, as
four very "airport unfriendly" FSL antennas deployed for a one week
DXpedition to the wild Rockwork 4 ocean cliff near Manzanita. Originally the
plan was to wait until Wednesday to hit the cliff, but I had a premonition
that something special might show up if an unscheduled, early morning trip was
made from Puyallup. Sure enough, the usually anemic 558-Fiji had its best signal
for the past few years at the cliff (even better than in Kona, Hawaii last
April).
Upon arrival at 1025 UTC (0325 local time) the ICF-2010 spotting
receiver showed a decent carrier on 1017, and a rush effort was made to set up
the 17" monster FSL for a recording. A3Z in Tonga cooperated nicely with
decent-level island music, about the same time I noticed another car drive up to
the cliff turnoff to join me in the total darkness (always a moment of
trepidation, since you never know what to expect on the wild cliff). This turned
out to be Chuck, who unfortunately noticed Tonga's sign off about the same
time his broadband loop was ready (1105). 531 had a potent mix of 4KZ and
PI for over an hour, while the usual Kiwi powerhouses (603, 657 and 702) were
testing the crunch resistance of my CC Skywave ultralights after 1230. About
this time 558-Fiji started sounding like it might even have a real 10 kW
transmitter, despite the fact that everyone knows it has serious signal issues.
I tried for Theo's 612-Star but it was missing in action, although the 657
frequency had its strongest signal ever heard at the cliff (by far). 702-Magic
and 2BL were in a wild S9 snarl for much of the time after 1245, while an
apparent 585-2WEB (not // 576) was playing some pop music. Chuck and I discussed
the propagation quite a few times, finally wrapping up the chase around
1330. My overall impression was that the session had a lot to offer,
especially considering the fact that 558-Fiji only showed up 1 day out of
11 last year. Tom has yet to join us-- hopefully he will share in the great
propagation.
558 Radio Fiji One Suva, Fiji Actually
sounding somewhat energetic with typical island music at 1307
The usual male announcer with more island music at 1333
1017 A3Z Nukualofa, Tonga Island choral music at
decent level around 1036 (after a rush FSL antenna setup)
For Theo:
657 Star Wellington/ Tauranga, NZ
Yikes! With a news signal like this on the "Kiwi Cliff,", who would choose to
vote against the Labour Party?
73 and Good DX,
Gary DeBock (DXing at the Rockwork 4 ocean cliff near Manzanita,
Oregon)
7.5 inch loopstick CC Skywave Ultralights +
17", 15" and 15" Airport-clearing FSL antennas
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