Slinkey Antenna
clyde
Has anyone used a slinkey antenna? I bought one and hooked it to a tree
in my yard about 30 ft up. I have a Grundig Yacht Boy 400 and I clipped
it to the telescopic antenna. I dont see much improvement. Live in the
Wa. state, is recption real bad here or should I update and get a newer
radio? this one I bought new in 91.
Thanks,
Clyde
--
clyde
Richard Clark
Hi Clyde,
That sounds like plenty of antenna for most SWLing - there's just not
enough sunspots to hook it too. A new radio won't fix that.
To those who are counting those sunspots (the missing ones), they have
theories about that which also involve the freemasons, ancient
astronauts, and other influences that will converge on a solution in
2012. The short explanation is that "time will tell."
73's
Richard Clark, KB7QHC
Wayne
"clyde" <clyde....@radiobanter.com> wrote in message
news:clyde....@radiobanter.com...
noise increases when you hook up the antenna, then you aren't doing too
badly.
--Wayne
nm...@wt.net
>
> To those who are counting those sunspots (the missing ones), they have
> theories about that which also involve the freemasons, ancient
> astronauts, and other influences that will converge on a solution in
> 2012. The short explanation is that "time will tell."
>
> 73's
> Richard Clark, KB7QHC
I'd heard quirks in the solar "jet stream" so to speak..
nm...@wt.net
> If the receiver
> noise increases when you hook up the antenna, then you aren't doing too
> badly.
> --Wayne
In a case like that, he's doing about as well as one can do, not
counting changes in pattern. For SWL, a slinky is ok. Not so hot
for transmitting though, being the antenna is almost all loading coil
with no capacitance added at the ends. Kind of like running back
to back ham sticks with no stingers on the ends. :/
It'll work, but there are better designs for short loaded dipoles.
clyde
Richard Clark;694940 Wrote:
> On Wed, 2 Dec 2009 04:01:50 +0000, clyde
> clyde....@radiobanter.com wrote:
>
> Has anyone used a slinkey antenna? I bought one and hooked it to a
> tree
> in my yard about 30 ft up. I have a Grundig Yacht Boy 400 and I
> clipped
> it to the telescopic antenna. I dont see much improvement. Live in
> the
> Wa. state, is recption real bad here or should I update and get a
> newer
> radio? this one I bought new in 91.
>
> Thanks,
>
>
> Hi Clyde,
>
> That sounds like plenty of antenna for most SWLing - there's just not
> enough sunspots to hook it too. A new radio won't fix that.
>
> To those who are counting those sunspots (the missing ones), they have
> theories about that which also involve the freemasons, ancient
> astronauts, and other influences that will converge on a solution in
> 2012. The short explanation is that "time will tell."
>
> 73's
> Richard Clark, KB7QHC
Hi Richard,
Thanks for the reply.
Clyde
--
clyde
ecregger
<nm...@wt.net> wrote in message
news:17dff8c1-a13b-4c13...@s20g2000yqd.googlegroups.com...
Speaking of compromise antennas that work - at least somewhat - there is one
that MFJ has been selling for quite a while. Unfortunately, the model number
does not spring to mind, but it is for indoor use and consists of a remote
control box (remote from the "antenna") an over twenty foot run of coax and
a mobile looking telescopic element antenna on a mount of some kind (I
forget which type). It does work pretty well. A friend of mine owned one and
he lived in an apartment complex with a no external antenna rule. He did a
very good job of working out past the Mississippi on 40 meters with just 100
watts. He lived in New Jersey.
Ed, NM2K (yes NM5K it is me again. I got my old callsign back)
'Doc
- 'Doc
Richard Clark
Who knows? Maybe the sunspots, like gauss/newtonian craters, got
plugged up with weak-force (feeble?) particels.
Richard Clark
>It's soot from the sun.
If the shuttle could only get close enough to trim its wick....
Art Unwin
The antenna sold today as a "slinky" is not the slinky of old as shown
in Jasik's book.
If one is to put a lumped load into the schematics of an antenna then
one MUST add a cancellation to the structure as the intent for maximum
efficiency of radiation is the correct use of distributed loads only.
The present day slinky consists of continuous length of wound
inductance or a "lumped" load. The true slinky consists of equal
amounts of clockwise and clockwise turns such that the lumped
inductance is canceled leaving only distributed loads.
O.T
As far as the "soot" term being presently bandied around, it is an
adjective which describes the chemical effects of combustion. Only
those old in the tooth or unfamilier with physics describe it solely
as a product of burning coaland nothing else!
This is similar to the use of "waves" in physics with respect to
particles. One is a noun,
where the other is a adjective that describes the action of same.
Bill
> As far as the "soot" term being presently bandied around, it is an
> adjective which describes the chemical effects of combustion. Only
> those old in the tooth or unfamilier with physics describe it solely
> as a product of burning coal and nothing else!
Does your meaning of combustion encompass nuclear fusion?
> This is similar to the use of "waves" in physics with respect to
> particles. One is a noun, where the other is a adjective that describes the action of same.
Wavy?
Richard Clark
>> As far as the "soot" term being presently bandied around, it is an
>> adjective which describes the chemical effects of combustion.
>
>Does your meaning of combustion encompass nuclear fusion?
I once encounter a young wag on campus ( a LaRoucheitte in disguise)
trying to argue (there seemed to be no other outcome expected to this
encounter) that Pythagoras law was wrong.
The hidden agenda seemed (and I say seemed only because this disguised
follower of LaRouche could never get to the point) to be for (or it
could have as easily been against) Nuclear power.
He waved his hands at the sun as the font of all energy (what this had
to do with Pythagorean law was a long and rambling exercise) and that
oil was for naught in comparison. I harkened to comparisons as they
are often fraught with error... my argumentative dwarf snapped on that
hook like an intellectual turtle.
He invoked how much power there was to be had by turning the moon into
our own special sun by nuking it. I venture to offer that we needn't
send missiles to the moon when a match head had enough ooomph to power
Seattle for a day. (I drew my own comparison carefully, knowing the
rhetorical advantage of choice in a match.)
"How could a match head barely light a cigarette, much less power a
city for a day?" Came his indignant, and proud retort - thinly
disguised as the master-stroke of logical humiliation.
I pointed out the difference between nuclear energy (his topic of
choice) and chemical energy (his topic of complete equal ignorance),
two concepts his arguments wandered between without care nor concern
for accuracy in terminology or science.
It was just my luck that all this attracted another eavesdropper who
wanted to dip his oar in this polluted water. I stepped out quickly
with my disguised LaRoucheitte chasing me with epithets such as "I
hope I'm never in YOUR class!"
clyde
'Doc;694986 Wrote:
> This is a metal slinky, not the plastic ones?
> - 'Doc
HI DOC,
YES IT IS METAL. I BOUGHT IT OFF EBAY. THANKS FOR YOUR REPLY.
CLYDE
--
clyde
The NEWS Man
Those SLINKY Antennas, Get very WARM almost HOT, so you really
know they do work, but very very inefficient.
Like trying to Pump at 200 WATT STEREO into your electric shaver
or light bulb!!!.
If they were pure Copper, you'd have something to talk-About!
Try making a QSO on a Bed Spring VERSUS a Dipole or Loop antenna.
Same analogy........
Wayne
"The NEWS Man" <belz...@blog.net> wrote in message
news:hg0bgn$6nq$2...@news.netins.net...
> It's poor grade of Metal has a HIGH-RF Resistance. Unlike COPPER wire,
>
> Those SLINKY Antennas, Get very WARM almost HOT, so you really
> know they do work, but very very inefficient.
>
> Like trying to Pump at 200 WATT STEREO into your electric shaver
> or light bulb!!!.
>
> If they were pure Copper, you'd have something to talk-About!
>
> Try making a QSO on a Bed Spring VERSUS a Dipole or Loop antenna.
>
> Same analogy........
>
M0WYM
I make one of these in an attempt to create an 80m dipole in my loft
and did work to some extent and my IC703 was OK with it. I took it
down in the end because as part of a 'fan dipole' it was fantastic
at picking electrical noise. You can see what I did at
http://www.radiowymsey.org/FanDipole/slinky.htm
Charlie.
--
M0WYM
www.radiowymsey.org
Sales @ radiowymsey
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