Based on feedback received, I've re-recorded the demo of CW Skimmer at PJ2T
during the 2009 CQWW 160 CW Contest to include audio. The description is
below.
http://www.youtube.com/watch?v=uE7n3J9OAM8
http://www.youtube.com/watch?v=uE7n3J9OAM8feature=youtu.be
feature=youtu.be
[VIEWING
I guess the next step of development will be the abandonment of the
operators.
73
Peter
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Jeffrey
Maass K8ND
The Afreet CW Skimmer is an invaluable contest tool for the Multi-Operator
or Assisted class
FYI:
http://www.nytimes.com/2013/09/24/science/space/the-sun-that-did-not-roar.html?ref=global-home
_
Topband Reflector
I have a nice 5' on a side tunable coax loop that goes from below 160 to about
4.5 mzh. free to the taking can't ship
There is also a KD9SV 160 PREAMP I modified to include the control of the loop
and a switch for two different RX antennas, that is $70if you take the loop too.
After recent night time thunder storm activity, two Beverage antennas lost some
directivity. Termination resistors looked normal, but an ohmmeter checked
reviled they had each gone
hundreds of ohms higher. Replaced resistors and back to normal.
73
Bruce-K1FZ
What kind of resistors are you using?
They shouldn't do that if you use the right type.
- Original Message -
From: Bruce k...@myfairpoint.net
To: topband@contesting.com
Sent: Tuesday, September 24, 2013 8:50 PM
Subject: Topband: Beverage antenna terminations
After recent night time
They were supposed to be non-inductive carbon, but need to find something
better like carbon film.
- Original Message -
From: Tom W8JI w...@w8ji.com
To: Bruce k...@myfairpoint.net; topband@contesting.com
Sent: Tuesday, September 24, 2013 2:55 PM
Subject: Re: Topband: Beverage antenna
Look at the Ohmite OX and OY series of resistors; they are pretty rugged
under surge conditions and, as best I can measure, they are claimed to be
non-inductive at HF.
73,
geo - n4ua
On Tue, Sep 24, 2013 at 10:46 PM, Bruce k...@myfairpoint.net wrote:
They were supposed to be non-inductive
They were supposed to be non-inductive carbon, but need to find something
better like carbon film.
Any resistor except a big wire wound is non-inductive on a low frequency
like 160.
What you want is a composition type resistor, either metal or carbon, to
handle surges without changing
On 9/24/2013 6:05 PM, Tom W8JI wrote:
They were supposed to be non-inductive carbon, but need to find
something better like carbon film.
Any resistor except a big wire wound is non-inductive on a low
frequency like 160.
What you want is a composition type resistor, either metal or
Thanks for all the termination resistor replies. Will look for Ohmite OX and OY
series resistors.
The resistors I had were supposed to be Carbon composition, but must not have
been. Will discard remaining ones.
Thanks again,
73
Bruce-K1FZ
_
Topband Reflector
Here you go:
www.mouser.com/ProductDetail/Ohmite/OY471KE
I have never lost one of those to a nearby strike.
73, Mike
www.w0btu.com
_
Topband Reflector
Bruce
I lost several resistors on my WF until I started to use NTE 3 W Metal on
the vertical Waller Flag and on the Horizontal WF I am using an array of 9
parallel/series.
http://www.nteinc.com/resistor_web/pdf/threew.pdf
Since that I never replaced it a single time in the last 4 years. The
Cut one open and look at it. You can tell right away what they are.
- Original Message -
From: Bruce k...@myfairpoint.net
To: topband@contesting.com
Sent: Wednesday, September 25, 2013 12:40 AM
Subject: Topband: Beverage antenna terminations
Thanks for all the termination resistor
Hi,
I am looking into what it would take to put a decent 160m antenna up. I got
many large trees, but also rather thick woods, and the radials are always
something that I do not enjoy much. Also, I cannot see myself to do 16 radials.
4 elevated radials may be tough as well. Terrain is just
15 matches
Mail list logo
