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The Home Of Super Slinky Helical Antennas -by- KB0XA

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RHF

unread,
Apr 11, 2006, 4:49:50 AM4/11/06
to
For One and All,

Just for the Fun of It ! :o)

The Home Of Super Slinky Helical Antennas -by- KB0XA
K-B-Zero-X-A => http://kbzeroxa.com/

Rotatable Helical Loop Antenna
http://kbzeroxa.com/rotatable_helical_loop_anten.htm

Vertical Helical Antenna
http://kbzeroxa.com/vertical_helical.htm

New SWL Double Slinky Loop Antenna
http://kbzeroxa.com/new_swl_double_slinky_loop.htm

Yes - We Have Slinkys -and- We Make Antennas :o)
http://kbzeroxa.com/antenna_workshop.htm

67 Foot Shortwave Listening (SWL) Slinky Antenna
http://kbzeroxa.com/67_shortwave_listening_anten.htm
http://kbzeroxa.com/swl_slinky_uses_real_copper_.htm
http://kbzeroxa.com/new_swl_slinky_antenna.htm

Smaller Slinky Jr. Shortwave Listening (SWL) Antenna
http://kbzeroxa.com/slinky_jr_swl__antenna.htm

Indoor Slinky Dipole Antenna
http://kbzeroxa.com/indoor_slinky_antennas.htm

Please Note - This is NOT my website
and I am not associated with KB0XA.

But I do like all kinds of Slinky Antennas - iane ~ RHF
.
.
. .
.

Mark Shernan

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Apr 11, 2006, 8:31:48 AM4/11/06
to

Does a slinky antenna really work as a compact antenna?
IOW, does it perform as a 64 foot antenna rather than a 15 footer?


Bob Miller

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Apr 11, 2006, 9:24:33 AM4/11/06
to
On Tue, 11 Apr 2006 12:31:48 GMT, Mark Shernan <msh...@yahoo.com>
wrote:

According to one of the gurus in the antenna group, it works as a
fifteeen footer, or whatever length it's pulled out to. The steel wire
also isn't as good as plain copper for conducting RF.

bob
k5qwg

David

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Apr 11, 2006, 9:46:50 AM4/11/06
to
On Tue, 11 Apr 2006 13:24:33 GMT, Bob Miller <NOS...@neosoft.com>
wrote:


> The steel wire
>also isn't as good as plain copper for conducting RF.
>
>bob
>k5qwg

The difference is immaterial.

Bob Miller

unread,
Apr 11, 2006, 10:26:23 AM4/11/06
to

Steel rusts.

bob
k5qwg

David

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Apr 11, 2006, 10:47:16 AM4/11/06
to
On Tue, 11 Apr 2006 14:26:23 GMT, Bob Miller <NOS...@neosoft.com>
wrote:

>On Tue, 11 Apr 2006 13:46:50 GMT, David <ric...@knac.com> wrote:
>
>>On Tue, 11 Apr 2006 13:24:33 GMT, Bob Miller <NOS...@neosoft.com>
>>wrote:
>>
>>
>>> The steel wire
>>>also isn't as good as plain copper for conducting RF.
>>>
>>>bob
>>>k5qwg
>>
>>The difference is immaterial.
>
>Steel rusts.
>

Stainless steel doesn't. Copper corrodes.

Bob Miller

unread,
Apr 11, 2006, 11:46:33 AM4/11/06
to

That's terrific, but not exactly a case for putting up a Slinky; an
equivalent length of penny-a-foot lampcord will work as well.

bob
k5qwg

RHF

unread,
Apr 11, 2006, 4:37:48 PM4/11/06
to
Bob [K5QWG],

So Why . . . Choose a Slinky over Stranded Copper Wire
for a Shortwave Listening (SWL) Antenna ?

Yes the Signal capture Area is only 15 Feet vice the 64 Feet of Wire
wrapped-up in the Slinky.

But when compared to a Single Copper Wire that is also 15 Feet Long
the Metal Slinky due to it's Coiled-Up-Wire {Spring} Shape has a
cross-sectional-area that has the electrical appearance of a Thicker
(Much Larger Wire) and thus is the better RF Signal gatherer.

Note - That the Slinky has the added 'dimension' of Thickness about
2.75 Inch Diameter vice about 1/8 Inch Diameter for the Copper Wire.

FWIW - The same could be said for an Antenna Element that is
made of an Inch Diameter (1") piece of Copper Pipe that is 15 Feet
Long over a piece of #14 AWG Stranded Copper Wire that is also
15 Feet Long.

Either way the Slinky or the Copper Pipe has a Larger-Physical-Area
and Greater-Surface-Area for the RF Signal Electrons to be gathered
'in' and and 'on' then the same length {long} of Wire.

So Why . . . Choose a Slinky over Stranded Copper Wire for a
Shortwave Listening (SWL) Antenna ? ? ?
- - - CAUSE IT'S A SLINKY ! :o)


yes i am a little bit slinky - iane ~ RHF

cuh...@webtv.net

unread,
Apr 11, 2006, 5:31:15 PM4/11/06
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Last year I saw a website with a article about somebody who had a Slinky
on the top step of one of those pyramids in Yucatan or wherever (it was
something like that with lots of steps) it is.They turned that Slinky
toy loose and it never missed a step all the way down to the bottom.
cuhulin

David

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Apr 11, 2006, 6:22:49 PM4/11/06
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On 11 Apr 2006 13:37:48 -0700, "RHF" <rhf-new...@pacbell.net>
wrote:

It's also a giant lumped inductance and highly reactive. If you want
a light structure that looks like a fat conductor you use ladder line.

jstrain

unread,
Apr 11, 2006, 8:35:25 PM4/11/06
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SLINKY's are resonant around 7.2 Mhz but I have received 31M with MINE
mityfine! 3.5-15 Mhz is good SWL but above 15Mhz starts ti lose "poop"
and is deaf by 17 Mhz here in central fla.


Yodar

RHF

unread,
Apr 11, 2006, 8:47:23 PM4/11/06
to
Mister David Sir,

Ladder Line is mighty fine and you could
Climb All-the-Way-to-the-Stars with It.

BUT ! - IT AIN'T A SLINKY ! :o)

bong, Bong. BONG ! ~ RHF

RHF

unread,
Apr 11, 2006, 10:17:23 PM4/11/06
to
Yodar in O'do,

I thought that at one time you were using a Vertical Slinky
with a Matching Transformer and Coax Cable feed-in-line ?
- - - Before you got the North County Active Antenna.

How long did you have the Vertical Slinky 'stretched-out ?

What was the Ratio of the Matching Transformer ?
1:1 ? -or- 4:1 ? -or- 9:1 ?


iwtk ~ RHF

cuh...@webtv.net

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Apr 11, 2006, 11:31:24 PM4/11/06
to
Well,I just now dischovered what was making that rattling around noise
in my Pioneer Onkyo SX-690 AM/FM stereo radio that I bought at the
Goodwill store last year.Two philips head screws on each side of the
cabinet hold the cabinet to the chassis,easy as pie to rmove that
cabinet from the chassis.The metal grill on top of the cabinet has a lot
of slots.Just the perfect size for the two dimes I found that had fallen
down in there.I saw two glass fuses and it didn't look to me like the
wires inside of the fuses had blown.

Maybe someday I will hook up the two Pioneer speakers that came with the
radio and try it out.
cuhulin

how...@hisisp.com

unread,
Apr 11, 2006, 11:57:51 PM4/11/06
to
On 11 Apr 2006 17:47:23 -0700, "RHF" <rhf-new...@pacbell.net>
wrote:

RHF - perhaps you've been using the bong a bit too much 8-}

RHF

unread,
Apr 12, 2006, 6:10:17 AM4/12/06
to
How...,

It be "My Slinky" that be doing the Bonging
as it slips-and-slides down the steps.

As for me my biggest vice is to Chug-a-Lug down Two Cups
of My StarBucks-with-out-the-Bucks Coffee in the Morning.

RHF's "StarBucks-with-out-the-Bucks" Coffee :
8-12 Ounces of Strong Coffee brewed with a Cinnamon Stick
Plus a Big Heaping Teaspoon of C&H Dark Brown Sugar
- - - Yes - I Love Dark Brown Sugar in the Morning :o)
Plus a Teaspoon of Carnation Chocolate Malted Milk Power
- - - Yes - I Love Chocolate in the Morning :o)
Plus Two Teaspoons of Chocolate Malt Favored Ovaltine Power
- - - Did I mention that - I Love Rich Chocolate in the Morning :o)
Stir Everything Up Real Good with the Teaspoon.
- - - Yes - I Love to Stir Things Up in the Morning.
Add an Once or two of Whole Milk for Color and Taste.
- - - Whole Milk for the Whole Body in the Morning
Don't Ya Know : "Milk Does A Body Good !"


the coffee is ready - drink-up boys ~ RHF

David

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Apr 12, 2006, 8:20:54 AM4/12/06
to

You are reverting to childhood. Clue: don't put loose change on top
of High Voltage electronics vents.

David

unread,
Apr 12, 2006, 8:21:48 AM4/12/06
to
On 12 Apr 2006 03:10:17 -0700, "RHF" <rhf-new...@pacbell.net>
wrote:

You're a sugar addict.

Bob Miller

unread,
Apr 12, 2006, 9:23:22 AM4/12/06
to
On 11 Apr 2006 13:37:48 -0700, "RHF" <rhf-new...@pacbell.net>
wrote:

If you want to talk about capture area, I've known of more than a few
people who live under metal roofs, and they've tried attaching
feedlines and antenna tuners to their roofs. Results have been
somewhat mixed. Typically a lot of noise, mainly from iffy contact at
the metal seams.

bob
k5qwg

cuh...@webtv.net

unread,
Apr 12, 2006, 11:35:06 AM4/12/06
to
Starbucks? Poor old me,I chug down plain old unsweetened with no milk
Folger's Instant Coffee (sometimes Maxwell House Coffee) loaded with
good old Caffeine.I once ran out of Coffee one morning and I tried to
make it through the day and night without my Coffee.I was going crazy up
in here.The next morning I jumped in my van and I chugged straight on
over to the food store for a big plastic jar of Coffee.I made that first
cup double strong.I can easily do without Beer,but Coffee,,,, I just
can't do it.Same with my hand rolled cigarettes too.
cuhulin

cuh...@webtv.net

unread,
Apr 12, 2006, 11:37:27 AM4/12/06
to
Those two dimes were in the radio when I bought it at the Goodwill
store.I think I am going to glue a piece of cloth under the grill of the
radio.
cuhulin

David

unread,
Apr 12, 2006, 4:03:39 PM4/12/06
to

'nother clue: when buying used junk turn it over and shake it to see
if there are loose bits of metal rattling around inside.

RHF

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Apr 12, 2006, 8:24:26 PM4/12/06
to
DaviD - Yes 'i' can admit to being a "Sugar" Addict ~ RHF

DaviD - After all 'you' have often admitted to being a
Drug Addict; and that is the 1st Step to Recovery.

a speedy recovery david ~ RHF

RHF

unread,
Apr 12, 2006, 8:37:36 PM4/12/06
to
Cuhulin - To get Naturally "Wired"
Try some Morning Thunder Tea.
[ Roasted Maté and Black Tea ]
http://www.celestialseasonings.com/images/products/large/07073407015.jpg
http://www.celestialseasonings.com//products/product/510.php
http://www.smileherb.com/smilebiz/752113.asp

Use the same Morning Thunder Tea Bag to brew three Cups
of Tea over a two hour period in the morning. Three Cups
from the same Bag would get me through four-to-six 8-Hour
Work Shifts before I would start falling asleep standing-up.
- - - Zzzzzzzzzed-Out ! ~ RHF

-=RaOuL=-

unread,
Apr 12, 2006, 9:30:19 PM4/12/06
to

"Bob Miller" <NOS...@neosoft.com> wrote in message
news:1ljn32prm104t52e2...@4ax.com...

Two words - "cool factor"

FWIW, I've usually had better results tuning and using zip cord antennas
vs. slinky antennas, but nothing is a priceless as the look on my wife's
face when she first came in and found me using a slinky antenna!

-=RaOuL=-


Bob Miller

unread,
Apr 12, 2006, 9:59:01 PM4/12/06
to

Well, it's not every antenna that can walk down the steps.

bob
k5qwg

cuh...@webtv.net

unread,
Apr 12, 2006, 9:54:19 PM4/12/06
to
But how about a wire spoke bicycle or motorbike wheel antenna? Has
anybody ever tried one of them?
cuhulin

m II

unread,
Apr 12, 2006, 10:12:28 PM4/12/06
to
Bob Miller wrote:

> Well, it's not every antenna that can walk down the steps.

My antenna fell off the roof once...

===================================
Some people are like Slinkys - pretty much useless, but they're fun to
watch fall down the stairs.

Anon
====================================


mike

m II

unread,
Apr 12, 2006, 10:16:13 PM4/12/06
to
cuh...@webtv.net wrote:

> But how about a wire spoke bicycle or motorbike wheel antenna? Has
> anybody ever tried one of them?


Didn't you try that? If I recall, your coax wrapped around the spinning
hub, locking it solid. You did a quick flight over the handlebars.


mike

RHF

unread,
Apr 13, 2006, 1:32:01 AM4/13/06
to
M II - "Some people are like Slinkys

- pretty much useless, but they're fun
to watch fall down the stairs. - Anon"

Dang - M II 'you' described most of my life :o) ~ RHF

m II

unread,
Apr 14, 2006, 12:24:38 AM4/14/06
to
RHF wrote:

Sorry to hear that. If it helps at all, I crushed my thumb in the car
door two days ago. The nail should be falling out really soon. I never
realized there were so many shades of blue or how difficult it is to go
pee without a thumb. I think I'll try sitting down next time. Rumour has
it that women have been using that technique for a few millenia.

mike

cuh...@webtv.net

unread,
Apr 14, 2006, 1:36:40 AM4/14/06
to
I have had one of hand's fingers crushed in a car door before,about 58
years ago.Hey,it couldn't have happened to a nicer guy.
cuhulin

Silfax

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Apr 14, 2006, 10:01:31 AM4/14/06
to
On 2006-04-14, m II <no...@telus.net> wrote:

> RHF wrote:
>
> realized there were so many shades of blue or how difficult it is to go
> pee without a thumb. I think I'll try sitting down next time. Rumour has

I guess you should try going lefty then ...

cuh...@webtv.net

unread,
Apr 14, 2006, 10:25:29 AM4/14/06
to
Say mannnnn,,, get a grip.But please dont let your mitts get cross
hatched up in a car door and let it slam on you.I guarantee you,it isn't
any fun! I needs to hitch on over to one of my certain other webtv user
name thingys and tell that 86 year old Ham Operator guy whom was in the
U.S.Navy (he lives in Mesquite,suburb on the East side of Dallas,Texas)
about this 1957 movie on tv,Battle Hymn.

What it is,he once told me a few years ago about a U.S.Army guy (in
Asia) who ''swapped'' his Jeep with the rods knockin for one of their
good U.S.Navy Jeeps.
cuhulin

Slow Code

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Apr 14, 2006, 12:11:31 PM4/14/06
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m II <no...@telus.net> wrote in news:Nvi%f.49490$K11.13436@clgrps12:


Now that created a hilarious mental image. At least to me anyway.

SC


cuh...@webtv.net

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Apr 14, 2006, 12:41:05 PM4/14/06
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I am not goin to try out a bicycle wire spoke wheel antenna untill one
of y'all does first and then get back up in here and give us a repote.
cuhulin

jstrain

unread,
Apr 15, 2006, 3:15:34 PM4/15/06
to
Mark Shernan wrote:
> RHF wrote:
>
>> For One and All,
>>
>> Just for the Fun of It ! :o)
>>
>> The Home Of Super Slinky Helical Antennas -by- KB0XA
>> K-B-Zero-X-A => http://kbzeroxa.com/
>>
>> Rotatable Helical Loop Antenna
>> http://kbzeroxa.com/rotatable_helical_loop_anten.htm
>>
>> Vertical Helical Antenna
>> http://kbzeroxa.com/vertical_helical.htm
>>
>> New SWL Double Slinky Loop Antenna
>> http://kbzeroxa.com/new_swl_double_slinky_loop.htm
>>
>> Yes - We Have Slinkys -and- We Make Antennas :o)
>> http://kbzeroxa.com/antenna_workshop.htm
>>
>> 67 Foot Shortwave Listening (SWL) Slinky Antenna
>> http://kbzeroxa.com/67_shortwave_listening_anten.htm
>> http://kbzeroxa.com/swl_slinky_uses_real_copper_.htm
>> http://kbzeroxa.com/new_swl_slinky_antenna.htm
>>
>> Smaller Slinky Jr. Shortwave Listening (SWL) Antenna
>> http://kbzeroxa.com/slinky_jr_swl__antenna.htm
>>
>> Indoor Slinky Dipole Antenna
>> http://kbzeroxa.com/indoor_slinky_antennas.htm
>>
>> Please Note - This is NOT my website
>> and I am not associated with KB0XA.
>>
>> But I do like all kinds of Slinky Antennas - iane ~ RHF
>>
>
> Does a slinky antenna really work as a compact antenna?
> IOW, does it perform as a 64 foot antenna rather than a 15 footer?
>
>
IT'S GOOD ENOUGH FER GUMMINT WORK which iirc was where it began , in
Korea, I think.

there was an excellent slinky site now dead that acknowledged it had
shortcomings as a transmit antenna outisde its resonance (7.2 mhz) but
mine went up to 15 mhz as a receive antenna falling off as frequencies
elevated. Above 17.6 mhz it was worthless

I prefer my North county active SWL antenna which on a 10' PVC pipe mast
works BCB to 28 mhz

yodar

Telamon

unread,
Apr 15, 2006, 3:34:37 PM4/15/06
to
In article <qDb0g.169289$g47....@tornado.tampabay.rr.com>,
jstrain <jstr...@cfl.rr.com> wrote:

The problem with this type is that the current distribution along these
shortened antenna elements will not be correct or sub optional. This is
fixable problem though, which will require more "structure" to solve.

--
Telamon
Ventura, California

cuh...@webtv.net

unread,
Apr 15, 2006, 3:25:04 PM4/15/06
to
I got my old 1961 Hercules Moped (made in Germany,it has bicycle pedals
on it) running again.New transmission gasket I made for it,new tires and
tubes.Them two divorced wimmins next door to me immediately adopted my
Moped.Oh well,,, I am too d.n fat and heavy to ride it around anymore
anyway.
cuhulin

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