On Jan 31, 2015, at 6:02 PM, jim <[email protected]> wrote:
The LZ1AQ amplifier is NOT a differential input amp, rather it is
referenced to ground.
This can have significant issues as it relates to common mode noise.
As a result of my research, I ended up with a Pixel loop. The amp has
great characteristics, differential input, uses an A.C. wallwart for low
noise, and the install instructions isolate the amp from any ground.
The loop interface also has a control line input from your rig, that
controls an internal relay, so the amp is protected when you transmit.
The loop was designed by hams.
The mechanical design of the loop is excellent, using welds at the
aluminum joints.
I have no interest in the Pixel company, just a very satisfied customer.
So satisfied, I bought two of them and phase them with a DX Engineering
NCC-1 phaser.
Jim
W6AIM
-----Original Message-----
From: Elecraft [mailto:[email protected]] On Behalf Of
Wouter Jan Ubbels
Sent: Saturday, January 31, 2015 12:28 PM
To: [email protected]
Subject: Re: [Elecraft] Elecraft Digest, Vol 129, Issue 41
Hi Paul,
I can recommend LZ1AQ´s active loop antenna.
See
http://active-antenna.eu/
It offers a nice variety of antenna configuration options, and it plays
very well here as a separate RX antenna at my urban & noisy QTH. The unit
is of high quality, and very well documented.
I am using it with my KX3 and a homebrew switchbox which uses reed relays
for QSK switching, controlled by the KX3 PTT output taken from the ACC2
jack.
73,
Wouter Jan PE4WJ
Message: 2
Date: Fri, 30 Jan 2015 19:15:32 +0000
From: Paul Barlow <[email protected]>
To: <[email protected]>
Subject: [Elecraft] Separate Receiving Antenna
Message-ID: <[email protected]>
Content-Type: text/plain; charset="us-ascii"
Dear Elecrafters,
I have a very small and odd shaped garden in which to play Ham Radio.
I have a K3 (and a K2 and... ), I run QRP CW and I was wondering if
anyone had experience of using active loop antennas as receiving
antennas to lower the noise floor. I was looking at Wellbrook's
Website this afternoon, and I see that their loops get good reviews on
EHam. I was wondering what experience you guys might have with these
and similar antennas.
73, Paul EI5KI
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