Yes Rob, my TX vertical feedpoint was closer to 7 ohm before it being
transformed to 50 ohm by means of a auto transformer style bottom coil and tap.
I have used a big fat relay with massive silver contacts, (it was used in a UPS
to switch battery banks) but with the actuator coil wires fed tro
I use a a relay to disconnect to the vertical portion just above the bottom
matching coil, keeping all else connected.
I do not understand why the shield should be disconnected ?
If it carries RF back it could be decoupled by ground rods to shield or
chokes.Bu if he top section is open circui
Dear Topband ops, I am working on my Topband WAZ, and need the following zones:
1 ,2, 6, 7, 19 and 23 (CW)
Would like to hear from you if you can help, email please.
regards,Raoul ZS1C
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Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
I meant to say first NA for this year!
On Friday, October 5, 2018 08:46:06 AM SAST, Raoul Coetzee
via Groups.Io wrote:
Managed my first NA this morning around my SR on 160m.I worked Bob, W9EWZ in
Wisconsin (CW of course)
Raoul ZS1C_._,_._,_Groups.io Links:
You receive
Managed my first NA this morning around my SR on 160m.I worked Bob, W9EWZ in
Wisconsin (CW of course)
Raoul ZS1C
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Topband Reflector Archives - http://www.contesting.com/_topband
Sad to hear about PY1RO,he was my first PY on 160m many years ago.RIP
ZS1C
On Sunday, May 6, 2018, 8:27:17 PM GMT+2, Roger Parsons via Topband
wrote:
From the Daily DX today:
"PY1RO, Rolf Rasp, passed away yesterday after suffering from a heart
attack. He had heart problems for severa
I have been playing with a few ideas, one was to mix a 6 Mhz Xtal oscilator
output with a 6.474 MHz signal from my ft817 (into a small 50 ohm load)the
difference, 474 KHz was amplified with tubes (valves for the UK ) and I ended
up driving an old 813.Why? because I wanted a job for the tubes th
I would like to know if FT8 also uses the same "Deep Search" as JT65.If it
does, read this and decide if it is for you.
JT65, is it doing what we want it to do?
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JT65, is it doing what we want it to do?
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Raoul ZS1C
On Thursday, October 26, 2017, 8:36:27 PM GMT+2, D
I agree! And not everybody have space for good RX antennas.And even if we can
install a good RX antenna in limited space, cheap Chinese products are making
it worse, it is a struggle to hear anything.
The other problem is, I use at least 600 watts on 160m, and some EUs try to
work you with a 1
Dear Dr Ostwald,
Even though I have not experienced any echoes on HF,I think I will keep an
open mind.We cannot even explain a weak force like gravity completely, after
many years of ongoing research.Who are we to say that LDS belong in fairy
tale? :-)After all, we are receiving echoes of t
surely it is important to have the correct loading on the crystal, just
connecting a crystal in the antenna path is not so good?It seems good loading
is around 1-3k.
Merry Christmas to all.Raoul ZS1C
From: K1FZ-Bruce
To: topband@contesting.com; Dave
Sent: Saturday, December 24, 20
Africa is not part of their world? I thought so, as my radio also seems to say
I live in a Black 160m hole.:-) bTW Where is Mos?
kind regards,Raoul ZS1C
From: James Rodenkirch
To: Top Band Contesting
Sent: Tuesday, July 12, 2016 3:22 PM
Subject: Topband: 160 Meter Radio Propagation
Ouch...I made a contribution while they were in Cape Town and we had a good
evening with the crew and the team in the Cape Royal Yacht club and after I
worked them, I contributed another $10.00Now before you blast me as a cheap
skate Jim, with our our exchange rate you may multiply that with ab
Rick wrote:>With a>circumference of 20 to 40 feet on 160 meters, the null is
only
>10 or 15 dB deep.
I use a medium wave BC station about 10miles away from as a reference to check
my 160m loop, (the loop is reasably broadband but no good on 80m) they are
about 4 Degrees East off me and with a n
The pattern in ZS the last couple of nights was the same:Nada till about 23:30
UTC, then they would come out of the noise or just above the noise. Although
the distance is not that long, (abt 4300Km ), it seems the path is only in
"good" darkness for a short while. (It is of course summertime he
Herb, I am with you on this one.I know my 160m dxcc will ,one day, go to trash.
Thats ok.At least I worked for it, you know, it took me a long time to get your
call in the qrn, and I was a green horn! from a small lotwith a great
ambition.Now that is more valuable to me than anything else.73Raou
Well said Herb!
Raoul ZS1C
From: Herbert Schoenbohm
To: topband@contesting.com
Sent: Friday, January 15, 2016 3:14 AM
Subject: Re: Topband: Strange propagation
Jim,
Artificial insemination is advanced technology also but pray tell me
that it is more fun. We are not taking abo
It seems my posts do not appear or are being blocked, so this is a test only.If
blocked for some reason, I would like to know why to rectify or
unsubscribe from the list.
Regards,
Raoul ZS1REC
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Topband Reflector Archives - http://www.contesting.com/_topband
Hi Jim and all,
I have been using a 16m vertical (T vertical ) with a limited amount o radials.
My property is only 41m by 20m , so very limited space for
antennas, radials etc.
I got dxcc on 160m which many will say is easy, wait to try and get 300
countries etc.Well, this was my own little achi
>The only documented cases of silicone grease causing an issue in switches is
>from silicone-carbide is when contacts arc through the grease. It actually
>is a very common lube for many applications.
>73 Tom
There was a time in my career in electronics servicing when I came in contact
wi
I am well aware that I may be flamed (again) for starting "something", but
I found this article where the conductivity of sap wood and hard wood is
measured.
It seems if I read it correctly, that with this specific trees and soil
conditions,
the results are
quote:and 594 ± 55.5
the heartwood r
I found this and at least it makes a good old read.
http://www.rexresearch.com/squier/squier.htm
regards,
Raoul ZS1REC
From: Tom W8JI
To: Topband
Sent: Monday, August 5, 2013 4:53 PM
Subject: Re: Topband: tree losses
I hope all of us can keep the topic
I managed to work David on 160m ssb, it is sort of in my backyard. But even
then, the qso was not easy. I gave him a CW key before he left
but I doubt if he will try to use it.
There are always a team on Marion Island but since about four years ago,
they are not allowed to add any more antennas th
I always enjoyed the signatures, Tree, keep em coming!
73
Raoul ZS1REC
"In days of old when ops were bold
and sidebands not invented,
the word would pass by pounding brass
and all were well contended."
(author unknown to me? would like to know where it came from)
__
This is really good! Let us try to keep it that way by example.
Raoul ZS1REC
From: Mark Lunday
To: 'N7DF' ; topband@contesting.com
Sent: Sunday, March 10, 2013 4:26 AM
Subject: Re: Topband: gentlemen's band
Wonderful. It restores my faith in the hobby when I h
: 'Raoul Coetzee' ; 'Greg Chartrand'
; topband@contesting.com
Sent: Saturday, January 19, 2013 9:20 AM
Subject: Re[2]: Topband: Need help to improve DX on 1/2 acre lot from
CA(k...@juno.com)
This is only partially true.
If a DXpedition is carefully planned, like, say, VP6DX a
I agree with most, but be careful not to be louder on TX than you can RX! Easy
to achieve from a small lot with loads of qrn and qrm, ask me.
Allso there is a point where your ouput power "flat top", and dont show any
reward. I think Top W8JI found the same years ago.
Still, you you can have lot
Like most of us I have been reading and trying to absorb the excellent
technical information in this group, but really, personal
attacks and comments should be avoided.
Or is this simply "normal", a reflection of what is happening on the bands too?
I hope this comes to an end, I would hate to uns
Here in South Africa we always had the imperial system till somewhere in the
middle sixties and before that we changed from pounds to "decimal" Rand and
cents.
It was met with some resistance but soon everybody got used to it.
As I have a British lathe and milling machine in my garage /workshop
Sad indeed.
Thank you for the info Bernie.
Pieter also belonged to Boland Ameteur Radio club at one stage and his
distictive voice will be missed.
RIP Pieter
Raoul ZS1REC
From: Bernie van der Walt
To: topband@contesting.com
Sent: Thursday, November 8, 2012 3:2
Ditto,
De ZS1REC, Raoul
From: "donov...@starpower.net"
To: topband@contesting.com
Sent: Friday, June 1, 2012 3:53 AM
Subject: Re: Topband: Antarctica
Worked R1ANN
DXCC ANTARCTICA (13)
Date 2005-04-03
Mode CW (CW)
Band
>I would not be too quick to dismiss small magnetic receiving loops from
consideration for DX work. I used a coax diamond loop, 5 feet on a side, on a
rotator at 20 feet, prior to trying larger wire >loops. The small
loop enabled many contacts in Europe from my West Coast city lot. The
signals
I think it may be a combination of factors.
We had some geomagnetic storms in that period that might have effected you, I
have found that this time of the year is not really good to EU, although I was
heard last night in EU
with 300 watts on 160m.The night before nobody could hear me.
I have n
I use a FT817 set to 1.830 and walk through the house, bringing the small
antenna close to any suspect object to check for noise,
anything can be checked that way lamps,washing machine, TV signal decoders,
computers, game boxes etc.
But alas,the neighborhood noise increased a lot and is making 1
Dear all,
not to waste your time and bandwidth, I will keep it short.
I had to change my departure flight from Cape Town to California to a day
later, and as a result my Wednesday "off" day was cut.
Very little time indeed to meet friends here, but at least I will visit Al
Baker, W5IZ, Dallas,
Dear all,
just received news that I have (select to ) to attend a course in Fremont CA
on 6, 7, 8 July.
I will probably arrive on 5th , with little bloted red eyes, seems like a 40
hour travel time from my QTH in Cape Town to Fremont, depending on how much
money I (or rather my company I work
I will always value a paper QSL card, no matter how simple and cheap in design,
more valuable than an electronic one.
But having thought about it, I have now, in addition to having a QSL manager,
joined LoTW and uploaded my electronic log starting 1 Jan 2009.
I will however send direct QSL cards
George wrote:
quote:
"Poor conditions have been the subject of a number of
recent postings. Conditions may have been relatively poor
for most us, but Carlos, N4IS, has been enjoying
remarkable success during the past three months. From
noisy Florida he ha
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