Last weekend, I noticed a high level of noise on the HF bands, especially
160m through 40m. The noise was classic switch-mode. The switching
frequency is 84 kHz.
Yesterday, I went on foot with my RFI locate gear and located the source in
under an hour, about a 1/4 mile away. You can read
Hi Mike,
I appreciate your comments.
I need to discuss this further with you – After SS CW.
I’ll be in touch next week.
TNX,
Bill N3RR
From: Mike Waters [mailto:mikew...@gmail.com]
Sent: Friday, November 06, 2015 5:21 PM
To: Bill Hider
Cc: topband
Subject: Re: Topband:
Steve,
I have two bidirectional beverages (NE/SW and NW/SE), each 720 ft long,
configured in a V-shape. I'm using DXE switching and xfmrs, with the vertex of
the V a 4x4 post. I use additional 4x4 posts spaced every 60 ft along the
length, seven ft out of the ground, with ceramic insulators
Tnx to all for the replies. This gives me a better understanding and starting
point for the project!
73,
Steve, WD8NPL
From: Mike Waters
Sent: Friday, November 06, 2015 1:44 PM
To: sawye...@earthlink.net
Cc: topband ; Steve Baughn
Subject: Re: Topband: beverage layout
Hello Ed,
Thanks for
I am planning to put up two bi-directional beverages at my QTH. Being as this
is the first time I have had the real estate and time I have a couple questions
regarding same:
1) Since these will be running at 90 degree angles to one another, can the feed
points for both be relatively close to
Are you actually talking about "switched 2 direction beverages" or 2
bi-directional beverages.
A bi-directional beverage receives in 2 directions at the same time on a
single wire. It is un-terminated. I have 2 of these in my beverage farm:
one E/W and one N/S.
A switched single
Ed,
I am referring to two switched 2 direction beverages, each with its own
reflection transformer.
73,
Steve, WD8NPL
-Original Message-
From: Ed Sawyer
Sent: Friday, November 06, 2015 12:18 PM
To: topband@contesting.com
Subject: Re: Topband: beverage layout
Are you actually
Hello Steve,
Ed has a point. I used to incorrectly refer to my two-wire,
switchable-direction Beverages as "bi-directional". Removing the far-end
termination resistor from a single-wire Beverage makes them mostly
bi-directional (about a 10 dB F/B).
As for your question # 1, please see
Hello Ed,
Thanks for the heads-up. I didn't know about the K1TTT website.
This looks interesting. Comments from a number of hams on Beverage antenna
materials:
www.k1ttt.net/technote/materials.html#fencewire
I haven't found any other info on Beverages on that site yet, but I'll keep
looking.
Hi Bill,
I see you have a wide vertical spacing (
http://users.erols.com/n3rr/photos/dual_ew-1.jpg).
I don't doubt that they work well, as you say.
I did a fair amount of analysis about that design in the past. I forget the
finer details, and I'm not in the mood for any more math and modeling
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