Fred, those transformers are the wrong impedance ratio for WD1! They are
for 420-450 ohm wire. WD-1 has a much lower impedance.
73, Mike
W0BTU
On Sat, May 9, 2020, 5:49 PM Fred Moeves wrote:
> Thanks to everyone with some very good advice and good ideas
> I am now looking for a good place to
Mike ,
I think that WD-1 is 150 ohm someone on here posted that.
So I am now looking over your.Chart of turns ratios paper..trying to
understand it.
I maybe in over my head on this stuff...not real sure how to read the chart.
I'll have to do some more reading.
Thanks
Fred KB4QZH
On
I've also heard that the native impedance a twisted pair of WD1A/TT
is about 150ohms. In my application, I use two parallel lengths of
WD1A/TT, spaced about 4.5inches. Each twisted pair acts like a single
conductor, and the Z of the two parallel lengths is about 450 ohms.
I didn't know the
Thanks to everyone with some very good advice and good ideas
I am now looking for a good place to buy the WD1-TT.
I would like to get some even if I don't use it for this Beverage.
I found one place looked pretty good I will call them Monday.
I am installing the antenna in a much wooded area so
VE6WZ has some good ideas for a Beverage in dense woods here
www.youtube.com/watch?v=ueHgrszoq6A
73
Frank
W3LPL
- Original Message -
From: "Fred Moeves"
To: topband@contesting.com
Sent: Saturday, May 9, 2020 10:49:36 PM
Subject: Re: Topband: 2 wire reversible Beverage-
Exactly, Dave! It's right in my Beverage antenna page ("145 ohms"), along
with several different calculators. :-)
And all WD-1* wire is *not* the same. Back when I used to sell Beverage
transformers, people would send me short samples to measure before I wound
them. You have to accurately measure
On 5/9/2020 6:46 PM, MU 4CX250B wrote:
I've also heard that the native impedance a twisted pair of WD1A/TT
is about 150ohms.
I think you mean Zo, characteristic impedance. I haven't had any to
measure, but that sounds high for any form of twisted pair. Twisted
shielded pair audio cable is
Gabriel, Thank you for the links. I will definitely check them out. The long
insulator screws in the picture looks interesting. 73 Fred KB4QZH
Original message From: Gabriel - EA6VQ via Topband
Date: 5/9/20 3:55 AM (GMT-05:00) To: 'Fred Moeves'
, topband@contesting.com
Another option to consider for reversible Beverage. Single RG-6 as the
antenna element.
https://www.unifiedmicro.com/bevflex4x.html
Ned
WC4X
-Original Message-
From: Topband
[mailto:topband-bounces+ned.mountain=mindspring@contesting.com] On
Behalf Of topband-requ...@contesting.com
It will.
Confirmed in a number of installation.
YMMV as always.
Limiting factor is losses in this and similar lines.
Affects only reverse/away direction signal level.
Depends on particular Insulation properties.
Another issue is matching.
Not all of WD1 is made to the same specification and has
Yes, WD-1 can be used specifically with KD9SV's products available from DX
Engineering. DXE also offers a FB quality two conductor alternative to WD-1.
73, Bob K3UL
-Original Message-
From: Topband On Behalf
Of Mikek
Sent: Saturday, May 9, 2020 1:15 PM
To: topband@contesting.com
I use two lengths of WD1/TT (twisted pair), with the strands in each
length twisted together. The two lengths are parallel, separated by
about 4.5 inches, and threaded loosely through a hole in a ceramic
insulator screwed into opposing faces of wood 4x4s. The 4x4s stick out
of the ground seven
That brings up the question, can you use a tightly coupled pair for a
reversible Beverage?
And would WD-1 wire work?
http://www.signalcenter.com/commo/wire/wireinfo/wdwireinfo.html
Mikek KF4ITA
_
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Hi Fred,
Might be you can get some ideas from http://dxmaps.com/safontbeverage.html and
http://dxmaps.com/safontbeverage2.html
73. Gabriel – EA6VQ
-Mensaje original-
De: Topband [mailto:topband-bounces+ea6vq_ml=dxmaps@contesting.com] En
nombre de Fred Moeves
Enviado el: viernes,
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