Here are the AB2E Multi single breakdown
Operators were AB2E, KA2AEV
BAND QSO's QTC's COUNTRIES MULTIPLIERS
160 0 0 0 0
80 86 86 20 80
40 347 345 34 102
20 599 597 43 86
15 12 12 7 14
10 0 0 0
0
-----------------------------------------------------
totals 1044 1040 104 282
FINAL SCORE= 586,842
>From David & Barbara Leeson <0005543629@mcimail.com> Wed Aug 16 18:27:00 1995
From: David & Barbara Leeson <0005543629@mcimail.com> (David & Barbara Leeson)
Subject: Fixing Tribanders
Message-ID: <70950816172707/0005543629NA1EM@MCIMAIL.COM>
Here's a way to trouble-shoot tribander and other trapped antennas on the
ground:
Mount the antenna at a convenient height so you can walk around under it and
reach all the elements.
Check with a continuity or ohm-meter (a) all the joints and (b) all the traps.
I found one bad trap and one bad joint that looked ok from the outside on a
TH7.
Then, hook up an SWR meter (I use one of the MFJ's) to the antenna feed, and
on each band, observe the SWR as you run your hand from the center out each
element. The behavior you should see if everything is ok is that on a given
band you get more and more effect on the SWR until you reach the appropriate
trap, beyond which you should not see much effect. I started with the
highest band and moved to the lowest band, and found a bad trap in one of the
parasitic elements. Even at low heights, this is an easy test of antenna
integrity. If something doesn't work the way you expect, take a closer
look. Typical failures are corrosion in the joint between the trap cover
and the element, wires in the coil broken from antenna flexing, and the
bug/spider web problem. At least in the Hy-Gain traps, the outside cover
is also the tip of the element it terminates (not sure about Cushcraft).
Hope this helps...don't forget that coax doesn't last forever, especially if
there are any punctures in the jacket (water wicks into the braid with
amazing speed and devastating effect).
The fact that this works even at low heights sure makes life easier, even
though the antenna obviously doesn't work like it will up in the air.
73 de Dave, W6QHS
>From Roger A. Cox WB0DGF" <75052.3037@compuserve.com Wed Aug 16 18:47:14 1995
From: Roger A. Cox WB0DGF" <75052.3037@compuserve.com (Roger A. Cox WB0DGF)
Subject: Log-Periodic CAD program for PC's
Message-ID: <950816174714_75052.3037_GHJ78-1@CompuServe.COM>
I have uploaded a file named LPCAD.ZIP to ftp.netcom.com/pub/ra/rander/NEC.
This file consists of the program LPCAD1.EXE and BRUN30.EXE. LPCAD1.EXE allows
you to easily create geometry for Log-Periodic dipole arrays, then save the
geometry as an NEC or NEC for Wires input file. Using NEC, you can analyze the
antenna's performance. There is also a gain look-up table in LPCAD based on the
newest curves of Directivity (dBi) vs. TAU and SIGMA, which is published in the
ARRL Antenna Handbook (page 10-3, Figure 4.) Actually, this "new" gain
information has been around since 1976.
Several versions of NEC-2 can also be found at this ftp site.
Anyone is welcome to download this program and use it. I also suggest that you
analyze some of the Ham LP's that are out there with these programs. You might
be surprised at their real performance.
73,
Roger Cox WB0DGF
75052.3037@compuserve.com
>From ke7gh@primenet.com (Brian Short) Wed Aug 16 18:59:59 1995
From: ke7gh@primenet.com (Brian Short) (Brian Short)
Subject: Installation Complete
Message-ID: <199508161800.LAA29169@mailhost.primenet.com>
Hi,
2-Radios For the Little Pistol
For anyone interested, I have finished my two radio installation thanks
largely to Top Ten and Dunestar. My two radios are the FT-990 and FT-890.
The FT-990 runs with the FL-7000 amplifier which also selects the antenna
for Radio #1. Both radios now control Band Decoders from the Band Port.
The Radio #1 Band Decoder controls only the Dunestar 600. The Radio #2
Band Decoder controls a Dunestar 600 and a 6-Way Antenna Relay. For my
antennas coming in, I use manual 2-Way switches (Daiwa) to select which
set of antennas is available to each rig. The installation is really all
simple stuff, but I would suggest careful planning and document your work
for future maintenance.
To connect the radios to the Top Ten Band Decoders, I used stock Yaesu
FL-7000 control cables, cutting them in half and branching off the signals.
No problems are noted even without blocking diodes (the FL-7000 has them
internally, I looked). I used miniature project boxes to house all of the
fragile connections.
-----------------------------------------------------------------------------
FT-990 8-PIN DIN TOP TEN DB-25M FL-7000 MOLEX
--------------------------- -------------- -------------
1 +13v WHITE 12* WHITE
2 TX GND GREY GREY
3 GND ORANGE 25 SHIELD ORANGE
4 BAND A BLUE 2 BROWN BLUE
5 BAND B GREEN 7 ORANGE GREEN
6 BAND C YELLOW 8 YELLOW YELLOW
7 BAND D RED 9 RED RED
8 LINEAR BLACK BLACK
SHELL BROWN BROWN
FT-890 8-PIN MINI-DIN TOP TEN DB-25M FL-7000 MOLEX
--------------------------- -------------- -------------
1 +13v WHITE 12* WHITE
2 TX GND GREY GREY
3 GND BROWN 25 SHIELD BROWN
4 BAND A BLUE 2 BROWN BLUE
5 BAND B GREEN 7 ORANGE GREEN
6 BAND C YELLOW 8 YELLOW YELLOW
7 BAND D RED 9 RED RED
8 LINEAR BLACK BLACK
* The Automatic Band Decoder may be powered from the Yaesu Band Port.
This is not always recommended especially when multiple relays or
other devices are being powered. A 12v power jack on the rear of
the unit may be utilized to supply the power.
I built a special power supply for this purpose to supply power for
the the Automatic Band Decoders, the 6-Way Relay Selector Box, and
the Dunestar Filters.
-----------------------------------------------------------------------------
The Dunestars come with a cable fitted with a DB-9 on one end. For Radio
#1, just solder the colored wires to the appropriate DB-25 pin (no diodes
are required). For Radio #2, the Dunestar 600 is connected along with the
6-Way Relay. In this case the wires branch off with blocking diodes along
both paths. For the 6-Way, the blocking diodes also decode or select the
proper antenna for each band where an antenna is used for more than one band.
Again I used miniature project boxes. For Radio #2, there are two boxes.
The first branches off the signals and includes the blocking diodes for the
Dunestar. The other box is connected to the first, but is mounted to the
bulkhead near the 6-Way Relay. The antenna selection diodes are in this box.
(Top Ten supplies plenty diodes for the task.)
-----------------------------------------------------------------------------
TOP TEN OUTPUT DB-25 DUNESTAR DB-9
--------------------------- ----------------
1 10 M SELECT Green --|<-- 6 Blue
2 15 M SELECT Brown --|<-- 5 Green
3 20 M SELECT Orange --|<-- 4 Yellow
4 40 M SELECT White --|<-- 3 Orange
5 80 M SELECT Purple --|<-- 2 Red
6 160 M SELECT Yellow --|<-- 1 Brown
7 30 M SELECT Lt Green
8 +12v Red ------ 9 Black
9 GROUND Shield ------ 7 Grey
10 12 M SELECT Pink
11 17 M SELECT Black
6-WAY RELAY CONTROL BOX
-----------------------
1 Yellow 80M FOLDED DIPOLE
2 Green KT-34 (20, 15, 10)
3 Orange 40M2A (40, 17)
4 White SLOPER (160, 30)
5 Blue N/C
6 Brown N/C
12V Red +12v
6-WAY RELAY DIODE BOX
-----------------------
80M SELECT ----------|<-------------- ANT 1 (1) Yellow
20M SELECT ----------|<----+
15M SELECT ----------|<----+--------- ANT 2 (2) Green
10M SELECT ----------|<----+
40M SELECT ----------|<----+
17M SELECT ----------|<----+--------- ANT 3 (3) Orange
160M SELECT ----------|<----+
30M SELECT ----------|<----+--------- ANT 4 (4) White
+12V POWER -------------------------- 12V (7) Red
-----------------------------------------------------------------------------
The last step in my installation was setting up so that I could operate either
SOP 2-radio/1-computer or M/S 2-radio/2-computer. Since Radio #1 and Radio #2
are physically too distant to reach from one spot, I decided the prudent thing
would be to set the FT-890 on the operating area next to Radio #1 when using
2-radio SOP and put it back it back on the shelf for 2-computer. To pull this
off, I made up cables allowing the radio to be pulled out and set on the table.
The following signals were included in the rather hefty bundle:
(1) GND, (2) COAX, (3) PWR, (4) BAND, (5) CAT, (6) KEY, (7) PTT, (8) DATA IN/OUT
Using RG-213, the bundle is not rather flexible, but the objectives are all
achieved. Switching configurations SOP-M/S additionally requires changing a
couple cables (Radio #2 CAT / KEY to Computer #1).
The station is intended to operate RTTY/CW/SSB contests using RTTY by WF1B,
N6TRLog, and CT. As you may have noted, my antenna farm is nothing to write
home about, but we have City Regulations and Limited Space. This was a nice
little project that I could do. I did not have it together for NAQP CW and
I will likely operate SARTG (RTTY) this weekend. I don't anticipate any
problems...
That is all there is to it! Any comments or questions?
THANKS FOR THE BANDWIDTH ESPECIALLY IF THERE IS NO INTEREST
(posted only to cq-contest@tgv.com, once)
73 de Brian
>From Will Sill <will@epix.net> Wed Aug 16 19:44:13 1995
From: Will Sill <will@epix.net> (Will Sill)
Subject: Log-Periodic CAD program for PC's
Message-ID: <Pine.SUN.3.91.950816144145.4530J-100000@grape.epix.net>
On 16 Aug 1995, Roger A. Cox WB0DGF wrote:
> I have uploaded a file named LPCAD.ZIP to ftp.netcom.com/pub/ra/rander/NEC.
> This file consists of the program LPCAD1.EXE and BRUN30.EXE. LPCAD1.EXE
> allows
> you to easily create geometry for Log-Periodic dipole arrays, then save the
> geometry as an NEC or NEC for Wires input file. Using NEC, you can analyze
> the
> antenna's performance. There is also a gain look-up table in LPCAD based on
> the
> newest curves of Directivity (dBi) vs. TAU and SIGMA, which is published in
> the
> ARRL Antenna Handbook (page 10-3, Figure 4.) Actually, this "new" gain
> information has been around since 1976.
>
> Several versions of NEC-2 can also be found at this ftp site.
>
> Anyone is welcome to download this program and use it. I also suggest that
> you
> analyze some of the Ham LP's that are out there with these programs. You
> might
> be surprised at their real performance.
It is the last comment that kinda surprises me. As the owner of a small
LPDA which works just fine in the real world, could I be expected to get
a better handle on the "real performance" by using a simulation program?
Am I missing something here?
will@epix.net - KD3XR - W F Sill, Tunkhannock, PA
|