Roger
I think your namesake Roger VE3CZ ex G3RBP has a vertical dipole.
Richard
-----Original Message-----
From: Topband <topband-bounces+richard=rodsley.net@contesting.com> On Behalf
Of topband-request@contesting.com
Sent: 24 March 2021 16:02
To: topband@contesting.com
Subject: Topband Digest, Vol 219, Issue 24
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Today's Topics:
1. NQ9E - QRM (W3HKK@roadrunner.com)
2. New Subject: 160M array feedline question (Roger Kennedy)
3. Re: New Subject: 160M array feedline question (W7TMT - Patrick)
4. Re: New Subject: 160M array feedline question (W7TMT - Patrick)
5. Re: NQ9E - QRM (List Mail)
6. subscription cancel KI7M (Terry Burge)
7. Re: subscription cancel KI7M (fmoeves)
----------------------------------------------------------------------
Message: 1
Date: Tue, 23 Mar 2021 16:38:13 +0000
From: W3HKK@roadrunner.com
To: "'topband@contesting.com'" <topband@contesting.com>
Subject: Topband: NQ9E - QRM
Message-ID: <43211f2d50890af85ac09941447cf326b6170c74@webmail>
Content-Type: text/plain; charset=UTF-8
sosunds like you may have power line noise which wont go away, but may vary
with weather.
I had similar problems which I tracked down with an AM radio, and driving
along the roads around my house til I located the likely culprit, a
continuously arcing lightning arrestor on a pole about 0.7 miles away.
I called the utility and met their crew at the site. Turns out the problem
wasnt at the pole I thought it was, but one pole over. The utility crew
heard the arcing and changed the arrestor. No more problems.
Arrestors can only take so manch discharges. In my case, it didnt clear, and
remained steadily arcing 7/24. That costs the utility $$$ in wasted power,
so they were happy for me to help them find it.
------------------------------
Message: 2
Date: Tue, 23 Mar 2021 22:33:53 -0000
From: "Roger Kennedy" <roger@wessexproductions.co.uk>
To: <topband@contesting.com>
Subject: Topband: New Subject: 160M array feedline question
Message-ID: <59DB7AE806B74210AE3DF4C24174B2C7@Packard>
Content-Type: text/plain; charset="us-ascii"
Guy (K2AV) - I really liked your explanation about the function of a radial
field on a 160m vertical . . . and how the radials don't actually radiate.
But I've often thought about the other extreme . . . I have a homebrew 2m
Ground Plane on top of my mast . . . just a quarter wave vertical . . . and
3 quarter wave radials sloping down about 45 degrees.
Now if those radials were vertical, it would really be a vertical Dipole . .
. i.e. the radials would be radiating. Whereas if they were horizontal, I
guess they wouldn't be.
You get my question . . . what really is the difference between the 3
different radial situations?
And here's another question . . . rather than all the issues of radials and
matching, has anyone ever used a Vertical Dipole on 160m ?
Sure, you're not going to have a 260 ft vertical . . . but suppose you had a
100ft support, so that you could have 50 ft vertical legs either side of the
coax feeder, and then just bend the legs at right angles at the top and
bottom to make up the length (linear loading) - maybe running in opposite
directions.
I would have though that would be quite an efficient antenna? And
presumably (just like any dipole) it would work even better if the ground
underneath it was very poor (in my opinion)
Roger G3YRO
------------------------------
Message: 3
Date: Tue, 23 Mar 2021 22:41:34 +0000
From: W7TMT - Patrick <W7TMT@outlook.com>
To: Roger Kennedy <roger@wessexproductions.co.uk>,
"topband@contesting.com" <topband@contesting.com>
Subject: Re: Topband: New Subject: 160M array feedline question
Message-ID:
<MW2PR1501MB1978AEE05F3B32D72305B042F1649@MW2PR1501MB1978.namprd15.prod.outl
ook.com>
Content-Type: text/plain; charset="us-ascii"
Called a Double L. This is the earliest article on it I remember. Others out
there as well.
http://www.yccc.org/http://www.yccc.org/Articles/double_l.ht/double_l.htm
Patrick, W7TMT
________________________________
From: Topband <topband-bounces+w7tmt=outlook.com@contesting.com> on behalf
of Roger Kennedy <roger@wessexproductions.co.uk>
Sent: Tuesday, March 23, 2021 3:33:53 PM
To: topband@contesting.com <topband@contesting.com>
Subject: Topband: New Subject: 160M array feedline question
Guy (K2AV) - I really liked your explanation about the function of a radial
field on a 160m vertical . . . and how the radials don't actually radiate.
But I've often thought about the other extreme . . . I have a homebrew 2m
Ground Plane on top of my mast . . . just a quarter wave vertical . . . and
3 quarter wave radials sloping down about 45 degrees.
Now if those radials were vertical, it would really be a vertical Dipole . .
. i.e. the radials would be radiating. Whereas if they were horizontal, I
guess they wouldn't be.
You get my question . . . what really is the difference between the 3
different radial situations?
And here's another question . . . rather than all the issues of radials and
matching, has anyone ever used a Vertical Dipole on 160m ?
Sure, you're not going to have a 260 ft vertical . . . but suppose you had a
100ft support, so that you could have 50 ft vertical legs either side of the
coax feeder, and then just bend the legs at right angles at the top and
bottom to make up the length (linear loading) - maybe running in opposite
directions.
I would have though that would be quite an efficient antenna? And
presumably (just like any dipole) it would work even better if the ground
underneath it was very poor (in my opinion)
Roger G3YRO
_________________
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
------------------------------
Message: 4
Date: Tue, 23 Mar 2021 22:48:13 +0000
From: W7TMT - Patrick <W7TMT@outlook.com>
To: Roger Kennedy <roger@wessexproductions.co.uk>,
"topband@contesting.com" <topband@contesting.com>
Subject: Re: Topband: New Subject: 160M array feedline question
Message-ID:
<MW2PR1501MB1978FA43CCB1E576300872C4F1649@MW2PR1501MB1978.namprd15.prod.outl
ook.com>
Content-Type: text/plain; charset="us-ascii"
Ooops, sorry about the cut and paste error. This link should work.
http://www.yccc.org/Articles/double_l.htm
________________________________
From: Topband <topband-bounces+w7tmt=outlook.com@contesting.com> on behalf
of W7TMT - Patrick <W7TMT@outlook.com>
Sent: Tuesday, March 23, 2021 3:41:34 PM
To: Roger Kennedy <roger@wessexproductions.co.uk>; topband@contesting.com
<topband@contesting.com>
Subject: Re: Topband: New Subject: 160M array feedline question
Called a Double L. This is the earliest article on it I remember. Others out
there as well.
http://www.yccc.org/http://www.yccc.org/Articles/double_l.ht/double_l.htm
Patrick, W7TMT
________________________________
From: Topband <topband-bounces+w7tmt=outlook.com@contesting.com> on behalf
of Roger Kennedy <roger@wessexproductions.co.uk>
Sent: Tuesday, March 23, 2021 3:33:53 PM
To: topband@contesting.com <topband@contesting.com>
Subject: Topband: New Subject: 160M array feedline question
Guy (K2AV) - I really liked your explanation about the function of a radial
field on a 160m vertical . . . and how the radials don't actually radiate.
But I've often thought about the other extreme . . . I have a homebrew 2m
Ground Plane on top of my mast . . . just a quarter wave vertical . . . and
3 quarter wave radials sloping down about 45 degrees.
Now if those radials were vertical, it would really be a vertical Dipole . .
. i.e. the radials would be radiating. Whereas if they were horizontal, I
guess they wouldn't be.
You get my question . . . what really is the difference between the 3
different radial situations?
And here's another question . . . rather than all the issues of radials and
matching, has anyone ever used a Vertical Dipole on 160m ?
Sure, you're not going to have a 260 ft vertical . . . but suppose you had a
100ft support, so that you could have 50 ft vertical legs either side of the
coax feeder, and then just bend the legs at right angles at the top and
bottom to make up the length (linear loading) - maybe running in opposite
directions.
I would have though that would be quite an efficient antenna? And
presumably (just like any dipole) it would work even better if the ground
underneath it was very poor (in my opinion)
Roger G3YRO
_________________
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
_________________ Searchable Archives: http://www.contesting.com/_topband -
Topband Reflector
------------------------------
Message: 5
Date: Wed, 24 Mar 2021 11:45:48 +1100
From: List Mail <mail10@barefoothorse.com.au>
To: "W3HKK@roadrunner.com" <W3HKK@roadrunner.com>,
"'topband@contesting.com'" <topband@contesting.com>
Subject: Re: Topband: NQ9E - QRM
Message-ID: <mailman.34.1616601728.23553.topband@contesting.com>
Content-Type: text/plain; charset="utf-8"
Not to mention a fire hazard.
Our power comes in on a Single Wire, Earth Return system. I hear a bit of
power line noise on my antennas closer to the pole transformer, but as I
receive on my Beverage system, hundreds of metres away, it isn?t a problem
for me.
Since the Black Saturday Bushfires of 2009, where an ignition of a major
fire system was traced to a faulty power pole, the distribution companies
have been very diligent with their maintenance of the system (they weren?t
since privatization of the grid). The sensitivity of the breakers has been
increased, and they don?t reclose automatically now.
The main problem with man made noise now is non-EMI compliant electronic
equipment. I feel the horse has bolted there.
And, conditions on 160 m are very poor here, both to NA and EU.
73, Luke VK3HJ
Sent from Mail for Windows 10
From: W3HKK@roadrunner.com
Sent: Wednesday, 24 March 2021 3:38 AM
To: 'topband@contesting.com'
Subject: Topband: NQ9E - QRM
sosunds like you may have power line noise which wont go away, but may vary
with weather.
I had similar problems which I tracked down with an AM radio, and driving
along the roads around my house til I located the likely culprit, a
continuously arcing lightning arrestor on a pole about 0.7 miles away.
I called the utility and met their crew at the site. Turns out the problem
wasnt at the pole I thought it was, but one pole over. The utility crew
heard the arcing and changed the arrestor. No more problems.
Arrestors can only take so manch discharges. In my case, it didnt clear, and
remained steadily arcing 7/24. That costs the utility $$$ in wasted power,
so they were happy for me to help them find it.
_________________
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
------------------------------
Message: 6
Date: Tue, 23 Mar 2021 18:16:02 -0700
From: Terry Burge <ki7m.pcr123@gmail.com>
To: "topband@contesting.com" <topband@contesting.com>,
"topband-request@contesting.com" <topband-request@contesting.com>
Subject: Topband: subscription cancel KI7M
Message-ID:
<CAOJvVPXk1R2J4Tjyd2xP2ZpnMrUd=H4QqfM5=eQgSPHtNG35cQ@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
Please cancel my subscription to the topband group.
Terry
KI7M
------------------------------
Message: 7
Date: Wed, 24 Mar 2021 06:39:55 -0400
From: fmoeves <fmoeves@twc.com>
To: topband@contesting.com
Subject: Re: Topband: subscription cancel KI7M
Message-ID: <eebf66$70nr@vesa03.kjsl.com>
Content-Type: text/plain; charset=utf-8
Another hack???Fred KB4QZH?
-------- Original message --------From: Terry Burge <ki7m.pcr123@gmail.com>
Date: 3/23/21 9:16 PM (GMT-05:00) To: topband@contesting.com,
topband-request@contesting.com Subject: Topband: subscription cancel KI7M
Please cancel my subscription to the topband
group.TerryKI7M_________________Searchable Archives:
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