This question is about bi-directional beverages, or more specifically BOG's
using a reflection transformer.
How does the loss on the forward and reverse direction compare to an
omnidirectional reference antenna?
I am not sure I worded that properly, but let's say the following was
observed.
Intriguing question ?
Has anyone on the reflector ACTUALLY tried two wire audio twisted pair for a 2
wire, two direction Beverage antenna. If yes, how did it work ? Notice any
added directional properties?
73
Bruce
www.qsl.net/k1fz/beveragenotes.html
_
Topband Reflector
If Cat 5 cable will work why won't two wire twisted air audio cable? Is
it because of the tightness of the twist that is of concern. I see no
reason it won't work except for the cancellation property of twisted
pair but with a Beverage we are dealing with a different wire signal
propagation
) and
these transformer sets are available from DXE 73, de gary
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Herbert
Schonbohm
Sent: Friday, March 28, 2014 7:29 AM
To: topband@contesting.com
Subject: Re: Topband: Antenna question
If Cat 5 cable will work
Floating the shield may even make it work better?
Herb Schoenbohm, KV4FZ
On 3/28/2014 9:23 AM, Tom W8JI wrote:
Has anyone on the reflector ACTUALLY tried two wire audio twisted
pair for a 2 wire, two direction Beverage antenna. If yes, how did it
work ? Notice any added directional
Floating the shield may even make it work better?
This shield could be used as the antenna, and the inner pair as the
transmission line. That would work fine.
_
Topband Reflector Archives - http://www.contesting.com/_topband
Has anyone on the reflector ACTUALLY tried two wire audio twisted pair for
a 2 wire, two direction Beverage antenna. If yes, how did it work ? Notice
any added directional properties?
There is no reason why it won't work or why shielded wire won't work with
proper transformers and wiring.
I would like to see if anyone actually tried the wire, and if it rejected
any portion of RF signals.
How would someone measure rejected any portion of RF signals in a
meaningful, quantitative, way?
_
Topband Reflector Archives - http://www.contesting.com/_topband
To: 'Bruce' k...@myfairpoint.net; 'Herbert Schonbohm'
herbert.schoenb...@gmail.com
Sent: Friday, March 28, 2014 9:55 AM
Subject: FW: Topband: Antenna question
Herb and Bruce, apparently the reflector stripped the attachment of so I
am
resending this to both of you...de gary
-Original Message
7:43 PM
Subject: Topband: Antenna question
Intriguing question ?
Has anyone on the reflector ACTUALLY tried two wire audio twisted pair for
a 2 wire, two direction Beverage antenna. If yes, how did it work ? Notice
any added directional properties?
73
Bruce
www.qsl.net/k1fz
Hi all,
My current LB antenna is an old Create 40/80 Vertical mounted about 20 feet off
the ground with a bunch of radials at the base. I removed the Create 40 M trap
and extended the mast to about 35 feet. At about 33 feet I have a homemade 40M
trap in a horizontal wire out about 85 feet with
The 43 foot antennas are very short (low inductance, poor efficiency) on 160.
Only my very best tuners will tune them… and tuning doesn’t make them
efficient, it only makes them not destroy the radio with reflected currents.
The best solution is to top load a 43 food antenna and turn it into an
On 12/9/2013 10:47 AM, Ashton Lee wrote:
The 43 foot antennas are very short (low inductance, poor efficiency) on 160.
Only my very best tuners will tune them… and tuning doesn’t make them
efficient, it only makes them not destroy the radio with reflected currents.
The best solution is to top
or
MMANA, please let me know.
So I am off 160m for the time being.
Regards,
Raoul ZS1REC
From: Jim Brown j...@audiosystemsgroup.com
To: topband@contesting.com
Sent: Monday, December 9, 2013 8:59 PM
Subject: Re: Topband: Antenna Question
On 12/9/2013 10:47 AM, Ashton Lee wrote
Do you think a Nye would tune my antenna to 160/80/40 if I extended it to 43
feet or so? Base voltage problems?
With 500 watts actually applied to a 43 foot vertical made of 1 inch tubing,
the base voltage is about 14 kV peak.
With standard 1/4 inch bolts forming the arc electrodes, 14 kV
once upon a time a long time ago i saw somewhere in a magazine or book,
or maybe someone told me, or i heard at a ham club meeting or flea
market, or i had a dream while in heart surgery, or my wife told me that
a 300 ohm TV twin lead dipole is not all twin lead, but the twin lead is
shorter than
Mike,
...a 300 ohm TV twin lead dipole is not all twin lead, but the twin lead is
shorter than a half wavelength and at each end a wire continues to make
half wavelength length of the dipole...
This technique could be applied to shorten a half-wave dipole by using the
twinlead as a T-match.
Thank you everybody for thinking and commenting about the folded dipole
twin lead question. K1FZ thought he remembered it in a hints and kinks
article, so it probably was not a dream I had in the hospital.
I try to stay away from 50 ohms and coax of all ilk, except for using RG8
to run HV around
once upon a time a long time ago i saw somewhere in a magazine or book,
or maybe someone told me, or i heard at a ham club meeting or flea
market, or i had a dream while in heart surgery, or my wife told me that
a 300 ohm TV twin lead dipole is not all twin lead, but the twin lead is
shorter than
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