Hi well I've only been QRV since June here but the QRN level seems
noticeably worse than my previous QTH in the W6 desert even though my
current QTH is also quiet, limited by only propagated QRN.
Doesn't 90 days seem a little short to get a feel for propagated noise and
system performance?
Thanks for all the feedback on how to get the radials over/under/through the
wall. After playing with this for the past few weeks I realize no way to go
under as test poundings on rods indicates the wall is too deep.
Without dismantling the wall the only way I can get through is possible
I have had a longstanding problem with pulse noise off my SW BOG. The
pulses are ~5khz wide, ~1 to 1.5 S units
in amplitude, are spaced every 12 khz, do not drift (one always right on
1825!), and extend from ~1700 to 2500 khz.
Not drifting at all indicates a system with a controlled clock
I agree with Tom's assessment. I wouldn't be too quick to give up on your
tx 4 square. Having a tx 4 square, a 1/4 wave vertical, and an 8 circle rx
array, I find the 4 square really does hear quite well. My man made ambient
noise level is quite low (during daytime hours when the
Thanks for all the feedback on how to get the radials over/under/through
the
wall. After playing with this for the past few weeks I realize no way to
go
under as test poundings on rods indicates the wall is too deep.
Tony,
Sometimes things get lost in all the traffic on debatable topics.
I agree with Tom's assessment. I wouldn't be too quick to give up on your
tx 4 square. Having a tx 4 square, a 1/4 wave vertical, and an 8 circle
rx array, I find the 4 square really does hear quite well. My man made
ambient noise level is quite low (during daytime hours when the
Tom,
In your opinion; given a receive antenna with negative gain, at what level does
the negative gain start to come into play? -25 dBi, -35 dBI ?
Jim
- Original Message -
From: Tom W8JI w...@w8ji.com
To: topband topband@contesting.com
Sent: Thursday, September 13, 2012
In your opinion; given a receive antenna with negative gain, at what level
does the negative gain start to come into play? -25 dBi, -35 dBI ?
There are several variables to this.
Estimating from a model:
At my house a ~ -25 dBi gain antenna system with a pattern like a good
large 8-circle,
Tom,
Thanks for the info. This is what I was looking for - info from someone who
has modeled the radials and/or actual experience with measurements.
Going over the wall simplifies things for me both for the shunt fed tower
for topband and for the radials for the 80M 4-sq.
I plan on soldering the
Thanks for the info. This is what I was looking for - info from someone
who
has modeled the radials and/or actual experience with measurements.
Going over the wall simplifies things for me both for the shunt fed tower
for topband and for the radials for the 80M 4-sq.
I plan on soldering the
Tnx again Tom.
K7HP modeled this too and is saying exactly what you are saying.
As soon as the leaves fall off the trees (which will be soon here in upstate
NY)I will clean out the area beyond the stone wall and start extending the
radials.
The other week I dig up a few of my enameled #16 radials
Bob--
Just curious -- How is your reception around sunrise, when most of the
thunderstorms in the Americas are in daylight, and therefore their QRN probably
isn't reaching you?
Art, KB3FJO
On Sep 12, 2012, at 11:07 PM, Bob Kupps n...@yahoo.com wrote:
Hi well I've only been QRV since
Hi thanks to all for the replies. Sorry I wasn't clear my QTH is northern
Thailand. The point I was trying to make is that even though it is a noisy part
of the season it is apparently less noisy at the European latitudes.
Unfortunately I don't have enough land to put up a 160m Xmit 4 square
Bob,
If you have a choice of one or the other the choice is easy: the transmit
4-square as an excellent transmit array as well as an excellent receive array.
Good luck!
73
Frank
W3LPL
Original message
Date: Thu, 13 Sep 2012 16:56:45 -0700 (PDT)
From: Bob Kupps n...@yahoo.com
Hey Dave! (he was my first QSO as a novice 43 years ago) I am located at 20
degrees N. Actually my choice is between a 160m Xmit 4 square and concentric
80/160m 8 circle RX arrays.
From: DAVID CUTHBERT telegraph...@gmail.com
To: donov...@starpower.net
Cc: Bob
Bob and Bob, so it is! I thought it was just below the equator.
Dave
On Thu, Sep 13, 2012 at 7:55 PM, Bob Kupps n...@yahoo.com wrote:
Hey Dave! (he was my first QSO as a novice 43 years ago) I am located at
20 degrees N. Actually my choice is between a 160m Xmit 4 square and
concentric
Bob, I suggest you contact Peter XU7ACY and get his
take on working 160 DX from your area of the world.
In my contacts with him, receiving has been his
biggest problem.
Lee K7TJR OR
___
UR RST IS ... ... ..9 QSB QSB - hw? BK
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