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Old April 21st 08, 04:21 AM posted to rec.radio.shortwave
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Default Multi-Element Inverted "L" Antenna Using an ICE-180 Matching Transformer


"Telamon" wrote in message
...
In article ,
"Michael" wrote:

"Dale Parfitt" wrote in message
news:MgSOj.1770$nb4.793@trnddc08...

"RHF" wrote in message
...
IIRC - Some Shortwave Radio Listeners (SWLs) have been know to
attach a different Wire Antenna Element to each of the Taps on an
ICE-180 and Feed {Mix} All the Signals into One and send them down
the Coax Cable to their Radio / Receiver. ;-}

ICE 180 a Reasonably Priced Professional Matching Unit -by- John
Doty http://www.hard-core-dx.com/nordicdx...ed/ice180.html

ICE 180A Beverage Matching Unit
http://www.iceradioproducts.com/reconly.html I.C.E. = Industrial
Communication Engineers, Ltd.

Multi-Element Inverted "L" Antenna using an ICE-180 Matching
Transformer is an 'interesting and 'tempting' Idea.

Mount the ICE-180 Matching Transformer on a Ground Rod and use
Four Separate Inverted "L" Antennas with a Space Bar at the Base
giving 3"~6" between the Vertical-Up-Legs of the "L"s. Beyond
this Rig the Vertical-Up-Legs Tops and the Horizontal-Out-Arm Ends
separately and independent from each other.

Don't fall into the trap of thinking that the "separate" antennas
function as separate antennas. eg: 2 dipoles running at right
angles to one another (a + sign as viewd from above) and fed
together does not result in a near omni antenna, but rather as a
single dipole run at 45 degrees to the "+" configuration.

Now, if you were to remotely switch each antenna, that would be a
different story. Dale


Hiya...

Too bad there is no way to "remotely" switch taps on the ICE-180.
You'd have to go out and physically disconnect all but one receiving
wire from the unit. Then you'd have to go back out and switch 'em
around when you wanted to switch. Not much fun, especially in the
rain.


Of course there is a way to do this. You could use relays to switch the
taps.


No way to remotely switch the taps without addition work and hardware that
probably wouldn't be the best use of those resources.

Wouldn't I be better off if I just set up additional "proven" antennas to my
six position switch. I'd say there would be a better chance to benefit from
completely different antennas to chose from via an antenna switch rather
then setting up relays for the taps on the ICE-180 to other wires that may
or may not do something good ???

Michael


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Old April 21st 08, 04:51 AM posted to rec.radio.shortwave
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First recorded activity by RadioBanter: Jul 2006
Posts: 4,494
Default Multi-Element Inverted "L" Antenna Using an ICE-180 Matching Transformer

In article ,
"Michael" wrote:

"Telamon" wrote in message
...
In article ,
"Michael" wrote:

"Dale Parfitt" wrote in message
news:MgSOj.1770$nb4.793@trnddc08...

"RHF" wrote in message
...
IIRC - Some Shortwave Radio Listeners (SWLs) have been know to
attach a different Wire Antenna Element to each of the Taps on an
ICE-180 and Feed {Mix} All the Signals into One and send them down
the Coax Cable to their Radio / Receiver. ;-}

ICE 180 a Reasonably Priced Professional Matching Unit -by- John
Doty http://www.hard-core-dx.com/nordicdx...ed/ice180.html

ICE 180A Beverage Matching Unit
http://www.iceradioproducts.com/reconly.html I.C.E. = Industrial
Communication Engineers, Ltd.

Multi-Element Inverted "L" Antenna using an ICE-180 Matching
Transformer is an 'interesting and 'tempting' Idea.

Mount the ICE-180 Matching Transformer on a Ground Rod and use
Four Separate Inverted "L" Antennas with a Space Bar at the Base
giving 3"~6" between the Vertical-Up-Legs of the "L"s. Beyond
this Rig the Vertical-Up-Legs Tops and the Horizontal-Out-Arm Ends
separately and independent from each other.

Don't fall into the trap of thinking that the "separate" antennas
function as separate antennas. eg: 2 dipoles running at right
angles to one another (a + sign as viewd from above) and fed
together does not result in a near omni antenna, but rather as a
single dipole run at 45 degrees to the "+" configuration.

Now, if you were to remotely switch each antenna, that would be a
different story. Dale

Hiya...

Too bad there is no way to "remotely" switch taps on the ICE-180.
You'd have to go out and physically disconnect all but one receiving
wire from the unit. Then you'd have to go back out and switch 'em
around when you wanted to switch. Not much fun, especially in the
rain.


Of course there is a way to do this. You could use relays to switch the
taps.


No way to remotely switch the taps without addition work and hardware that
probably wouldn't be the best use of those resources.

Wouldn't I be better off if I just set up additional "proven" antennas to my
six position switch. I'd say there would be a better chance to benefit from
completely different antennas to chose from via an antenna switch rather
then setting up relays for the taps on the ICE-180 to other wires that may
or may not do something good ???


Sure thing. I was just answering the assertion that there is no way to
remotely switch taps. Just use the lowest impedance tap and be done with
it.

--
Telamon
Ventura, California
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