Hi Mark,
I would be curious if you are getting a significant S-Meter reading using
the external preamp and testing with the antenna disconnected from the
cable?
If so, my guess would be that the Ewe pattern is terribly distorted by its
surroundings, noise is coupling in from other sources - or
Hi Mark,
I modeled your antenna last night, and have some comments.
There is almost as much reactance as resistance at the feedpoint of your
EWE based on your dimensions and termination resistor, but sounds like
that's typical (per the ON4UN low band DXing book). The back null is also
not as
Good Evening
I completely repositioned the EWE today, it's about 70 feet from it's
original position and is not pointing at the INV-L.It's pointing
towards southern EU.
I Verified the feedline was OK, verified the transformer was OK etc.
Same results. When listening to an EU station on
Bjorn, Tim:
Thanks for your comments.
I don't have much time to play with the antennas until the weekend, but I
did manage to hook up an SWR Analyzer. The analyzer says 1.5:1 at 1820 Kc
(35 ohms R). So, there is an antenna out there.
A need to clarify that the noise level is the same between
> A reversible array is far and away the best way to convince yourself
> that you have a working receive antenna system. If you reverse it and
> nothing ever changes, well, you're listening to some other antenna!
> Some (e.g. YCCC array) are supposed to be far more sensitive to near-field
>
Hi folks
I would like to add some comments to receiving antennas issue. Any resonant
thing (wire, cable, rotor cable tower, TX antenna...) will interact with the RX
antenna if they are in the same polarity, different polarity has 27 dB or more
of isolation due the polarization itself.
The
I would like to concur with SM0MDG's comments about receive coax
connections. I betcha the OP's system is leaking in at levels way higher
than the Ewe actually produces. I know everyone loves to detune their
transmit antenna, but there's no way an Ewe should sound noisier than the
inverted L.
A
On 09 Dec 2015, at 01:49, Mark K3MSB wrote:
> The EWE is aimed directly at the vertical part of the inverted-L, about 25
> to 30 feet away. The transformer end is towards the Inv-L.I didn’t
> think about that when I put it up.
Hi Mark,
This is what I would change
By the way, there is a thread on 160M Noise Levels that is active.
Is the noise that I'm seeing common to what others are seeing? If it is,
that means it's not local to me (which doesn't mitigate the EWE issue.)
73 Mark K3MSB
_
Topband Reflector Archives -
Good Evening Everyone
Thank you for all the responses, some public, some private. Since some
content overlapped, I’ll post my answers to the group.
I replaced the 2K pot with a 1.2K resistor. No change.
I disconnected the feedline at the base of the Inverted-L (simulating a
relay). No
It sounds like you have a problem with either the terminating resistor
or the matching transformer. Or, there could be a problem with your
switching if you have more than one EWE. There is no reason why a EWE
would behave the way you describe unless it is simply acting as a
shortened
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