Kiwa MW Air-Core Loop Antenna {In-the-News} FS / FA
 

Kiwa MW Air-Core Loop Antenna {In-the-News} FS / FA
http://groups.google.com/group/rec.r...f1b3ecf7fb3f60

Hello Everyone - In-Search-Of-A : Kiwa Air Core MW Loop Antenna

For One and All,

Once again here is another one of the Legendary
Kiwa Air Core MW Loop Antenna's on eBay

eBay Auction Item # 9712004478

http://cgi.ebay.com/_W0QQitemZ9712004478

The Opening Bidding is $599 with a Buy-It-Now Price of $749
Plus a Shipping and Handling Cost of $30 .

This eBay Auction Closed without a Bid {SECRET SALE ? }

FWIW - The Highest eBay Auction Price so far paid for a
Kiwa Air Core MW Loop Antenna has been $795 plus S&H.

NOTICE :
This is NOT my Auction and I am NOT Associated with the eBay Seller.

PLEASE NOTE :
That this Message is being Posted for Informational Purposes Only.

know your seller and something about what they are selling.
as always - buyer beware - life is a gamble and so is ebay ~ RHF

Kiwa MW Air-Core Loop Antenna {In-the-News} FS / FA
 

For One and All,

Once again here is another one of the Legendary
Kiwa Air Core MW Loop Antenna's on eBay.

eBay Auction Item # 9720355600

http://cgi.ebay.com/_W0QQitemZ9720355600
http://cgi.ebay.com/KIWA-MW-Loop-Ant...temZ9720355600

The Opening Bidding is $600 with a Buy-It-Now Price of $725
Plus a Shipping and Handling Cost : To Be Determined .

Location of Seller is : Edmonton, AB, Canada

This eBay Auction Ends on : 7 de Mayo 2006 @ 16:51:40 PDT

FWIW - The Highest eBay Auction Price so far paid for a
Kiwa Air Core MW Loop Antenna has been $795 plus S&H.

NOTICE :
This is NOT my Auction and I am NOT Associated with the eBay Seller.

PLEASE NOTE :
That this Message is being Posted for Informational Purposes Only.

know your seller and something about what they are selling.
as always - buyer beware - life is a gamble and so is ebay ~ RHF

Kiwa MW Air-Core Loop Antenna {In-the-News} FS / FA
 

In article .com,
"RHF" wrote:

For One and All,

Once again here is another one of the Legendary Kiwa Air Core MW Loop
Antenna's on eBay.

eBay Auction Item # 9720355600

http://cgi.ebay.com/_W0QQitemZ9720355600
http://cgi.ebay.com/KIWA-MW-Loop-Ant...temZ9720355600

The Opening Bidding is $600 with a Buy-It-Now Price of $725 Plus a
Shipping and Handling Cost : To Be Determined .

Location of Seller is : Edmonton, AB, Canada

This eBay Auction Ends on : 7 de Mayo 2006 @ 16:51:40 PDT

FWIW - The Highest eBay Auction Price so far paid for a Kiwa Air Core
MW Loop Antenna has been $795 plus S&H.

NOTICE : This is NOT my Auction and I am NOT Associated with the eBay
Seller.

PLEASE NOTE : That this Message is being Posted for Informational
Purposes Only.

know your seller and something about what they are selling. as always
- buyer beware - life is a gamble and so is ebay ~ RHF
.
Kiwa MW Air-Core Loop Antenna {In-the-News} FS / FA
http://groups.google.com/group/rec.r...482a6c2fcb8ba7
3

http://groups.google.com/group/rec.r...ff1b3ecf7fb3f6
0



and now you know ~ RHF

All I know is $600 bucks is a lot for a loop antenna. Nice unit
though. What have these Kiwa loops sold for in the past?

--
Telamon
Ventura, California

Kiwa MW Air-Core Loop Antenna {In-the-News} FS / FA
 

They commonly sold used at the flea market for $250 to $300. I believe
$400 was the new price.

I've had the opportunity to try out the Quantum, Kiwa, and Wellbrook at
the same time. If space is an issue, get the Quantum. If you have a bit
of room, get the Wellbrook. You need a version with a 3ft (meter) loop
to get decent AM BCB. The kiwa is OK, but not as good as the Quantum in
my listening session. Both the Kiwa and the Quantum can be tilted as
well as rotated. I didn't find that useful, but maybe there are time
when that would come in handy. A wellbrook isn't easy to tilt.

The Wellbrook ALA-100 really works well if you set up a large loop. I'm
using 4 turns about 6ft on the side, which really eats up a corner of a
room. [It's an experimental antenna of sorts, and I'll probably settle
for a double loop for indoor use, and use the larger loop when
camping.] Some of the local AM BCB stations are so strong that my 7030
has to cut in the attenuator. Many are so strong that the preamp
doesn't turn on. Note that you need some spacing between the loops to
get any decent HF performance. About 8 inches does the job.

The regenerative controls on the Kiwa are quite useless if you have
decent filters in your radio. Given the limited bandwidth of the Kiwa,
I can't see why you wouldn't choose the Quantum instead. The Wellbrook,
not using a core but rather depending on aperture, works well above HF,
certainly up to 50Mhz. I've used it as low as 24Khz, which has a Navy
FSK signal.

Lastly, the Wellbrook doesn't need to be tuned.


Telamon wrote:
In article .com,
"RHF" wrote:

For One and All,

Once again here is another one of the Legendary Kiwa Air Core MW Loop
Antenna's on eBay.

eBay Auction Item # 9720355600

http://cgi.ebay.com/_W0QQitemZ9720355600
http://cgi.ebay.com/KIWA-MW-Loop-Ant...temZ9720355600

The Opening Bidding is $600 with a Buy-It-Now Price of $725 Plus a
Shipping and Handling Cost : To Be Determined .

Location of Seller is : Edmonton, AB, Canada

This eBay Auction Ends on : 7 de Mayo 2006 @ 16:51:40 PDT

FWIW - The Highest eBay Auction Price so far paid for a Kiwa Air Core
MW Loop Antenna has been $795 plus S&H.

NOTICE : This is NOT my Auction and I am NOT Associated with the eBay
Seller.

PLEASE NOTE : That this Message is being Posted for Informational
Purposes Only.

know your seller and something about what they are selling. as always
- buyer beware - life is a gamble and so is ebay ~ RHF
.
Kiwa MW Air-Core Loop Antenna {In-the-News} FS / FA
http://groups.google.com/group/rec.r...482a6c2fcb8ba7
3

http://groups.google.com/group/rec.r...ff1b3ecf7fb3f6
0



and now you know ~ RHF

All I know is $600 bucks is a lot for a loop antenna. Nice unit
though. What have these Kiwa loops sold for in the past?

--
Telamon
Ventura, California

Kiwa MW Air-Core Loop Antenna {In-the-News} FS / FA
 

A friend of mine has owned most of the MW loops made in the past 30 years
and he had the Kiwa loop and sold it. He said it was too much work to use
and took too long everytime you went to a new station.



All I know is $600 bucks is a lot for a loop antenna. Nice unit
though. What have these Kiwa loops sold for in the past?

--
Telamon
Ventura, California

Kiwa MW Air-Core Loop Antenna {In-the-News} FS / FA
 

The point of the Kiwa is the nulls, and the tilting is necessary to
achieve that. (You get good loop nulls by building it so that it has
as small a response as possible to electric fields, with electrical
balancing and cancellation. Otherwise the electric field signal fills
every null, being 90 degrees out of phase from the signal you're
working with and can otherwise cancel exactly.)

The regeneration helps, by narrowing the bandwidth, in knocking down
the adjacent channel station (also tune away from it on the radio),
and I suppose, if you have a deaf radio, it can bring the signal up
out of the radio's internal noise. A good radio doesn't need the latter
effect.

And it's particularly nicely constructed, which is not nothing.

The fact that it's tuned means that you can't use it very well in
an array with other antennas to cancel stations, because the same
station has a different gain across its audio bandwidth; but by itself
it's pretty good for cancelling.

--
Ron Hardin


On the internet, nobody knows you're a jerk.

Kiwa MW Air-Core Loop Antenna {In-the-News} FS / FA
 

John Plimmer wrote:
wrote in message

The regenerative controls on the Kiwa are quite useless if you have
decent filters in your radio.

I can't agree with this statement at all. If you know how to use the
regeneration circuits properly then you will get superb results from the
Kiwa MW Loop.

I have owned the Kiwa for many years and taken it on countless DXpeditions
and it's performance is awesome, rivalling and often beating a well laid out
1000 foot beverage antenna.

At the following link you can read exactly how the regeneration feature
operates and gives such excellent results
http://www.dxing.info/equipment/kiwa_mw_loop_plimmer.dx

Has anyone made a DIY clone of the Kiwa Air-Core loop?

Kiwa MW Air-Core Loop Antenna {In-the-News} FS / FA
 

I stand by my statement. If you have decent filters in your radio, you
don't need the regenerative controls of the Kiwa. Reading that article
doesn't change my opinion, nor did I find the regen useful when I
tested the Kiwa with a R8B.

When the Kiwa was $250 at the flea market, yeah, whatever, buy one if
you like it. At the obscene prices people pay on ebay, you are better
off investing that money in a better radio.

Regarding DXing with a loop, here is the LAX TIS I recorded from
central Nevada
http://www.lazygranch.com/sound/lax_530_etgravel.wav
About 250 miles. As you know, TIS is flea power.



John Plimmer wrote:
wrote in message
The regenerative controls on the Kiwa are quite useless if you have
decent filters in your radio.
I can't agree with this statement at all. If you know how to use the
regeneration circuits properly then you will get superb results from the
Kiwa MW Loop.

I have owned the Kiwa for many years and taken it on countless DXpeditions
and it's performance is awesome, rivalling and often beating a well laid out
1000 foot beverage antenna.

At the following link you can read exactly how the regeneration feature
operates and gives such excellent results
http://www.dxing.info/equipment/kiwa_mw_loop_plimmer.dx

--
John Plimmer, Montagu, Western Cape Province, South Africa
South 33 d 47 m 32 s, East 20 d 07 m 32 s
RX Icom IC-756 PRO III with MW mods
Drake SW8 & ERGO software
Sony 7600D GE SRIII
BW XCR 30, Braun T1000, Sangean 818 & 803A.
GE circa 50's radiogram
Antenna's RF Systems DX 1 Pro, Datong AD-270
Kiwa MW Loop
http://www.dxing.info/about/dxers/plimmer.dx

wrote in message
oups.com...
They commonly sold used at the flea market for $250 to $300. I believe
$400 was the new price.

I've had the opportunity to try out the Quantum, Kiwa, and Wellbrook at
the same time. If space is an issue, get the Quantum. If you have a bit
of room, get the Wellbrook. You need a version with a 3ft (meter) loop
to get decent AM BCB. The kiwa is OK, but not as good as the Quantum in
my listening session. Both the Kiwa and the Quantum can be tilted as
well as rotated. I didn't find that useful, but maybe there are time
when that would come in handy. A wellbrook isn't easy to tilt.

The Wellbrook ALA-100 really works well if you set up a large loop. I'm
using 4 turns about 6ft on the side, which really eats up a corner of a
room. [It's an experimental antenna of sorts, and I'll probably settle
for a double loop for indoor use, and use the larger loop when
camping.] Some of the local AM BCB stations are so strong that my 7030
has to cut in the attenuator. Many are so strong that the preamp
doesn't turn on. Note that you need some spacing between the loops to
get any decent HF performance. About 8 inches does the job.

The regenerative controls on the Kiwa are quite useless if you have
decent filters in your radio. Given the limited bandwidth of the Kiwa,
I can't see why you wouldn't choose the Quantum instead. The Wellbrook,
not using a core but rather depending on aperture, works well above HF,
certainly up to 50Mhz. I've used it as low as 24Khz, which has a Navy
FSK signal.

Lastly, the Wellbrook doesn't need to be tuned.

Once Agian - Kiwa MW Air-Core Loop Antenna {In-the-News} FS / FA
 

For One and All,

Once again here is another one of the Legendary
Kiwa Air Core MW Loop Antenna's on eBay.

NOTE - eBay Auction for Item # 9720355600 was Cancelled.
The Item was then released and Sold For $600 - IIRC.

Currently for those who are looking for a KIWA
High Performance MW Air-Core Loop Antenna
there is another one on eBay at this time.

http://cgi.ebay.com/_W0QQitemZ9733955351
http://cgi.ebay.com/Kiwa-High-Perfor...temZ9733955351


NOTICE - BE ADVISED :
This is NOT my Auction and I am NOT Associated with the eBay Seller.

PLEASE NOTE - FWIW :
That this Message is being Posted for Informational Purposes Only.
- - - It was simply an Interesting Antenna Design - - -

Know your Seller and something about what they are Selling.
As Always - Buyer Beware - Life is a Gamble and so is eBay ~ RHF

Kiwa MW Air-Core Loop Antenna {In-the-News} FS / FA
 

John Plimmer wrote:
wrote in message
I stand by my statement.
A statement by one who has never owned a Kiwa MW Loop and who from his
postings had only a short and cursory use of one.

If you have decent filters in your radio, you
don't need the regenerative controls of the Kiwa.
That's nonsense and shows your lack of experience with the Kiwa Loop. I ran
it for years with my previous Drake R8B and for the last eighteen months
with the Icom. The Icom has superb filters yet the regenerative feature of
the Kiwa improves substantially on the Icom's filters.

If you want to brag about long distance low power transmitter DX, then the
following is just a sample of the many exotic stations I receive on my Kiwa
loop:
KVNS Brownsville TX
KCNZ Cedar Falls IA
both 1000 watts or less and well over 8,000 miles from my QTH.

In fact, I challenge you to find anywhere on international forums any
results that come anywhere near my published results using the Kiwa MW Loop.
I've never seen any Quantum or Wellbrook results that come anywhere near
matching the results I get from my Kiwa Loop.
--
John Plimmer, Montagu, Western Cape Province, South Africa
South 33 d 47 m 32 s, East 20 d 07 m 32 s
RX Icom IC-756 PRO III with MW mods
Drake SW8 & ERGO software
Sony 7600D GE SRIII
BW XCR 30, Braun T1000, Sangean 818 & 803A.
GE circa 50's radiogram
Antenna's RF Systems DX 1 Pro, Datong AD-270
Kiwa MW Loop
http://www.dxing.info/about/dxers/plimmer.dx

wrote in message
oups.com...
I stand by my statement. If you have decent filters in your radio, you
don't need the regenerative controls of the Kiwa. Reading that article
doesn't change my opinion, nor did I find the regen useful when I
tested the Kiwa with a R8B.

When the Kiwa was $250 at the flea market, yeah, whatever, buy one if
you like it. At the obscene prices people pay on ebay, you are better
off investing that money in a better radio.

Regarding DXing with a loop, here is the LAX TIS I recorded from
central Nevada
http://www.lazygranch.com/sound/lax_530_etgravel.wav
About 250 miles. As you know, TIS is flea power.



John Plimmer wrote:
wrote in message
The regenerative controls on the Kiwa are quite useless if you have
decent filters in your radio.
I can't agree with this statement at all. If you know how to use the
regeneration circuits properly then you will get superb results from the
Kiwa MW Loop.

I have owned the Kiwa for many years and taken it on countless
DXpeditions
and it's performance is awesome, rivalling and often beating a well laid
out
1000 foot beverage antenna.

At the following link you can read exactly how the regeneration feature
operates and gives such excellent results
http://www.dxing.info/equipment/kiwa_mw_loop_plimmer.dx

--
John Plimmer, Montagu, Western Cape Province, South Africa
South 33 d 47 m 32 s, East 20 d 07 m 32 s
RX Icom IC-756 PRO III with MW mods
Drake SW8 & ERGO software
Sony 7600D GE SRIII
BW XCR 30, Braun T1000, Sangean 818 & 803A.
GE circa 50's radiogram
Antenna's RF Systems DX 1 Pro, Datong AD-270
Kiwa MW Loop
http://www.dxing.info/about/dxers/plimmer.dx

wrote in message
oups.com...
They commonly sold used at the flea market for $250 to $300. I believe
$400 was the new price.

I've had the opportunity to try out the Quantum, Kiwa, and Wellbrook at
the same time. If space is an issue, get the Quantum. If you have a bit
of room, get the Wellbrook. You need a version with a 3ft (meter) loop
to get decent AM BCB. The kiwa is OK, but not as good as the Quantum in
my listening session. Both the Kiwa and the Quantum can be tilted as
well as rotated. I didn't find that useful, but maybe there are time
when that would come in handy. A wellbrook isn't easy to tilt.

The Wellbrook ALA-100 really works well if you set up a large loop. I'm
using 4 turns about 6ft on the side, which really eats up a corner of a
room. [It's an experimental antenna of sorts, and I'll probably settle
for a double loop for indoor use, and use the larger loop when
camping.] Some of the local AM BCB stations are so strong that my 7030
has to cut in the attenuator. Many are so strong that the preamp
doesn't turn on. Note that you need some spacing between the loops to
get any decent HF performance. About 8 inches does the job.

The regenerative controls on the Kiwa are quite useless if you have
decent filters in your radio. Given the limited bandwidth of the Kiwa,
I can't see why you wouldn't choose the Quantum instead. The Wellbrook,
not using a core but rather depending on aperture, works well above HF,
certainly up to 50Mhz. I've used it as low as 24Khz, which has a Navy
FSK signal.

Lastly, the Wellbrook doesn't need to be tuned.


I can borrow the Kiwa again, but I really rather not waste my time
screwing with it. It was overpriced at $400 new, now the ebay prices
are just plain silly.

As I have played with all three (Kiwa, the older Quantum, and my
tweaked ALA 100 multiturn loop), I feel quite confident in my
assessment. The Kiwa simply lacks the aperture of a stock Wellbrook,
let alone a multiturn Wellbrook.