EWE Antenna
dick sander
antenna described in an article by WA2WVL in Feb '95 QST?
How well does it work?
Are there any sources for the 3:1 transformer (kits)
and any suggestions on a preamp?
73, Dick - K5QY
W8JI Tom
(dick sander) writes:
Hi Dick, I did a survey on Topband net with users.
Responses 11. Good or OK 4, poor or no good 7.
Most comments indicate the EWE was better than a tx antenna, unless the tx
antenna was directional or in a rural location. Even short Beverages
always
seemed to beat the EWE. F/B results ranged from poor to good, but there
was
no way to tell the reason for this from the responses. I suspect proximity
to
other antennas, soil conditions, or failure to de-couple the feedline from
the antenna was the cause.
73 Tom
dick sander
>antenna described in an article by WA2WVL in Feb '95 QST?
>
>How well does it work?
>
>Are there any sources for the 3:1 transformer (kits)
>and any suggestions on a preamp?
>
>73, Dick - K5QY
/Hi Dick, I did a survey on Topband net with users.
/
/Responses 11. Good or OK 4, poor or no good 7.
/
/Most comments indicate the EWE was better than a tx antenna, unless the tx
/antenna was directional or in a rural location. Even short Beverages
/always
/seemed to beat the EWE. F/B results ranged from poor to good, but there
/was
/no way to tell the reason for this from the responses. I suspect proximity
/to
/other antennas, soil conditions, or failure to de-couple the feedline from
/the antenna was the cause.
/
/73 Tom
Thanks Tom,
I found one local 160m DXer and one response via email. Both said the
beverage for them was better than the EWE.
I also was given the name of Industrial Comm Engr, LTD.
at 1-800-423-2666 for impedance xfmrs and preamps.
I called and ordered a 180A xfmr @ $39 and a 123B preamp @ $45.
The preamp is protected so there's no need to ground the antenna
while xmting. It is 22 to 25 dB gain w/1.4dB NF from 1.8 to 2 Mhz.
I've got 150 ft in which to run the receiving ant, so I'm
going to try 10 ft high X 150 ft long. My fingers are crossed
73, Dick - K5QY
W8JI Tom
(dick sander) writes:
>
>I also was given the name of Industrial Comm Engr, LTD.
>at 1-800-423-2666 for impedance xfmrs and preamps.
>I called and ordered a 180A xfmr @ $39 and a 123B preamp @ $45.
>The preamp is protected so there's no need to ground the antenna
>while xmting. It is 22 to 25 dB gain w/1.4dB NF from 1.8 to 2 Mhz.
>
>I've got 150 ft in which to run the receiving ant, so I'm
>going to try 10 ft high X 150 ft long. My fingers are crossed
>
>73, Dick - K5QY
The pre-amp seems reasonable but the transformer sure is expensive. What
active device does the pre-amp use?
The responses highlight the need to test antennas when they are modeled
close to the ground. The performance is much worse than the computer
indicates. Several of the comments I received were that even very short
"Beverages" worked much better than the Ewe.
73 Tom
Michael Haydon
article, as he was finishing testing. the transformer is a 3:1 TURNS
RATIO therefore a 9:1 IMPEDENCE RATIO best route would be to order small
(1/2 inch) toroidal cores from amidon associates (no minimum order) they
will guide you to proper style based on you r operating freq. Built one
of these antennas, the 160/80m compromise, found results to be good when
used with 15db preamp.
Michael Haydon
extremely short VERTICAL antennas, the top wire being used for phase
delay, NOT a receiving element.
On 31 Jan 1996, dick sander wrote:
> >Has anyone built and tested the EWE 160m receiving
> >antenna described in an article by WA2WVL in Feb '95 QST?
> >
> >How well does it work?
> >
> >Are there any sources for the 3:1 transformer (kits)
> >and any suggestions on a preamp?
> >
> >73, Dick - K5QY
>
> /Hi Dick, I did a survey on Topband net with users.
> /
> /Responses 11. Good or OK 4, poor or no good 7.
> /
> /Most comments indicate the EWE was better than a tx antenna, unless the tx
> /antenna was directional or in a rural location. Even short Beverages
> /always
> /seemed to beat the EWE. F/B results ranged from poor to good, but there
> /was
> /no way to tell the reason for this from the responses. I suspect proximity
> /to
> /other antennas, soil conditions, or failure to de-couple the feedline from
> /the antenna was the cause.
> /
> /73 Tom
>
> Thanks Tom,
>
> I found one local 160m DXer and one response via email. Both said the
> beverage for them was better than the EWE.
>
Daniel Senie
W8JI Tom <w8j...@aol.com> wrote:
>In article <4elpgt$r...@news01.aud.alcatel.com>, san...@aud.alcatel.com
>(dick sander) writes:
>
>>
>>Has anyone built and tested the EWE 160m receiving
>>antenna described in an article by WA2WVL in Feb '95 QST?
>>
>>How well does it work?
>>
>>Are there any sources for the 3:1 transformer (kits)
>>and any suggestions on a preamp?
>>
>>73, Dick - K5QY
>
>
>
>seemed to beat the EWE. F/B results ranged from poor to good, but there
>no way to tell the reason for this from the responses. I suspect proximity
>other antennas, soil conditions, or failure to de-couple the feedline from
>
>73 Tom
Did anyone else notice that the recent QST article never once gave a
translation for what "EWE" means? Is it a sheepish little antenna? If so, why
the caps. If it's an acronym, then Spell the thing out. If it's named after
someone, mention it. I was quite disappointed with the article for not
bothering to mention the genesis of the design.
Anyone here know what it is?
Dan N1JEB
--
---------------------------------------------------------------
Daniel Senie Internet: d...@senie.com,
Daniel Senie Consulting n1...@senie.com
http://www.senie.com Packet Radio: N1...@KA1SRD.MA
W8JI Tom
Michael Haydon <mha...@olivet.edu> writes:
>Subject: Re: EWE Antenna
>From: Michael Haydon <mha...@olivet.edu>
>Date: Fri, 2 Feb 1996 19:40:46 -0600
>
>The 150 lenght is a mistake, the ewe antenna is actually a pair of
>extremely short VERTICAL antennas, the top wire being used for phase
>delay, NOT a receiving element.
>
>
>
I wonder if anyone bothered to tell the flat top it isn't supposed to
receive? It may not know that! ;-)
What makes the flat top NOT receive substantial signal in any EWE?
If we want two short out of phase verticals, why put them up and feed them
with coax?
Or use a system that looks like a big rectangle with the short side
vertical and a 180 degree twist in the middle? From the side it would look
like two lazy triangles with the noses touching and the connection between
them transposed.
(Actually I had a system like that in 1976 that was several WL long that
employed many "loops")
73 Tom