s a complaint ... well ... you get the picture.
73
Lyn, WØLEN
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Grant Youngman
Sent: Monday, October 28, 2019 1:54 PM
To: k2...@arrl.net
Cc: Elecraft Refl
Subject: Re: [Elecr
More info about the LZ1AQ loop preamp is here
http://active-antenna.eu/amplifier-kit/
The supplied amplifier, control board, enclosure, etc. make a nearly
complete package. You fabricate the loop yourself. Various examples are
shown on associated pages.
I think the main benefit of such a
There is a lot of information here … http://www.lz1aq.signacor.com. I’ve been
considering building something along these lines
Grant NQ5T
> On Oct 28, 2019, at 8:04 PM, David Thompson via Elecraft
> wrote:
>
> I would like to know more about your receive antenna. At my home, I deal with
>
I would like to know more about your receive antenna. At my home, I deal with
S7-S9+ noise and am looking for some way to be able to operate besides FT8.
Thanks…
David Thompson, AG7TX
Jack of All Trades
Master of None
dbthomp...@me.com
> On Oct 28, 2019, at 14:31, Drew AF2Z wrote:
>
> My
l Message-
> From: elecraft-boun...@mailman.qth.net
> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Grant Youngman
> Sent: Monday, October 28, 2019 1:54 PM
> To: k2...@arrl.net
> Cc: Elecraft Refl
> Subject: Re: [Elecraft] RX noise and 2-wire lines (was: KPA1500 RFI on 12m)
My RX antenna is a pair of small amplified stacked loops. It uses the
LZ1AQ amplifier board fed with common FTP (foil twisted pair) cable,
which provides the supply voltage, control lines and a shielded twisted
pair for the signal. I don't think you can get any better noise
isolation than
When I lived in a 3rd floor apartment, I used to use a slingshot to fire a
fishing sinker with a 28-gauge magnet wire attached, across the parking lot
under our balcony into a wooded area's trees. Then I dangled a counterpoise
behind a downspout where it wouldn't be seen, and tuned it all with a
I had a similar 370' antenna hidden on the oaks above 'the common area'
(that no one ever used, it wasn't developed); it allowed me 200+
countries. That HOA had a severe case of cranial rectumitus, folks with
an inflated sense of self importance and the false sense of power. I'll
be durned
aft Refl
Subject: Re: [Elecraft] RX noise and 2-wire lines (was: KPA1500 RFI on 12m)
Don’t you love it when guy’s are taking about their latest large antenna
projects? I read these things, look wistfully out back into my 30’x30’
townhouse courtyard, and wonder if I can dare put my Buddipole 40M dipo
Don’t you love it when guy’s are taking about their latest large antenna
projects? I read these things, look wistfully out back into my 30’x30’
townhouse courtyard, and wonder if I can dare put my Buddipole 40M dipole up
one more foot without attracting the ire of some resident who will report
On 10/27/2019 11:33 AM, Lyn Norstad wrote:
> Your mileage may vary, but for anyone looking to try something new
> (actually a very OLD design), it's a fun project.
If I had 400 feet for an antenna that's the type of antenna that I would
go for too, but I barely have 400 inches. Have fun with
...@mailman.qth.net] On Behalf Of Victor Rosenthal 4X6GP
Sent: Saturday, October 26, 2019 9:11 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] RX noise and 2-wire lines (was: KPA1500 RFI on 12m)
Jim,
I have to disagree about balanced line. Unlike coax, both conductors are
exposed to external R
Vic,
What you're missing is that an antenna and its feedline are a SYSTEM,
and antennas can be unbalanced by their surroundings -- ground slope,
un-equal mounting heights, conductors in nearby buildings or structure,
trees, towers, etc. Any unbalance in the SYSTEM results in common mode
Jim,
I have to disagree about balanced line. Unlike coax, both conductors are
exposed to external RF fields, so common mode noise will be rejected. If
the antenna and line are properly balanced (not always easy to do, I
admit) and if it is fed through a balanced antenna tuner, there is no
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