Hear Ye, Hear Ye...if you aren't FTPing at FCC.GOV this Saturday, 10-5-96:
You are welcome to attend the next meeting of the Florida Contest Group. It
will be at 1:00 at the Hooters in Sarasota.
To get directions, or just say hi, check out the Florida Contest Group's web
site (courtesy of that Low Power and WRTC workin' animal: AC1O)...point your
Go to the Group Discussion Area....Hooters expert directions elucidated by
WD4AHZ, see his posting of 10/1/96.
Again - all are welcome, especially if you wanna buy a round!
Jim, K1ZX (possibly with a new call by then)
Florida Contest Group
firstname.lastname@example.org (something else I will need to change!)
>From email@example.com (Rod Greene) Thu Oct 3 02:08:00 1996
From: firstname.lastname@example.org (Rod Greene) (Rod Greene)
Subject: CT network RS232 wiring
At the end of this message please see a copy of a message that I
saved regarding CT networking. Hope it makes some sense. If you
have some questions, please let me know. I'll do my best to help.
I believe the -loop switch only works with version 9.someting and later.
We have used this arrangement for several contests last and it worked
At 12:43 AM 10/2/96 -0700, John Downing wrote:
>Does anyone have a schematic of the RS232 "network" that is used by CT?
>A null modem is used between two computers - been there / done that - but
>how are three or more networked together so as to make CT happy? Jeez,
>I wish Ken would have stuck with a standard, i.e., ethernet, networking scheme.
>Getting ready to link three, maybe four, laptops together for the CQWW SSB
>Thanks in advance,
>N6YRU / V31DX
>The Cuba Libre Contest Club - which is NOT going to Belize for the CQWW SSB
>but IS heading to the eastern Caribbean.............
Rod and Ray:
Heres the best detailed message on how to do it. All other answers
simply said yes by using the -loop command. The following message
gives info on the physical network required.
Rich Thorne - WB5M
133 Light Falls Drive
Wake Forest, NC 27587
//--- forwarded letter -------------------------------------------------------
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> From: email@example.com
> To: firstname.lastname@example.org
> Subject: Re: CT V9 and networks with ONE com port?
> Content-Type: multipart/mixed; charset="us-ascii";
> >Rumor has it that CT version 9 can support a network using a single
> >com port v.s. the use of two comports.
> >Is there any truth to this. I'm running version 8 so I currently do
> >not have a version 9 manual.
> Dont look for it in the Version 9 manual either. They added it (fixed
> it?) with 9.13 or so.
> >If this is true (which would be great for laptop users) do you use a
> >y connector off the com port?
> Don't think so... read on.
> I tested 9.25 over the weekend with single com ports on two computers
> with my WD8AUB homebrew box. It worked fine. (The real test is with 3 or
> more computers.) Here is my secret: (works with NA too)
> What I have done is build a box that has 5 25 pin seriel ports. (DB25
> Wire them so that the pin 2 of port 1 goes to pin 3 of port 2. Then, pin 2
> of port
> 2 goes to pin 3 of port 3. Then pin 2 of port 3 goes to pin 3 of port 4.
> You get
> the idea. VERY IMPORTANT is to complete the loop by taking the last port
> pin 2 to pin 3 of port 1. This way, you are looping the DTR/DTS pins from
> port to
> port. To do it absolutely correctly, you may want to do it in full
> by connecting the other pins that a null modem reverses. Think they are
> 6 and 23, but you should check that if you elect to do that. I havent. It
> worked great with 5 NA computers last year at VP5VW.
> Two more points to complete the project.
> 1. You should do some shielding on the box to keep RF out. Maybe
> some ferrite chokes on the lines. Keep the lines as short as possible, and
> ground and tie all of the pin 7's together to the chassis. And you can then
> ground the box to the earth ground.
John: I didn't do anything special for grounding and didn't use any ferrite.
You may have different results tho..
> 2. The "switch" (command line) on CT to get it to do the loop is CT -loop.
> Also, if you are not going to use all of the ports at the same time,
> insert a jumper into the unused ports pins 2 and 3 (this way they
> are tied together much the same as they would be if used
> with a computer attached to them.)
> This way, the WD8AUB box can be used for any combination of
> computers in a multi-op environment. We used 5 last year, and will
> have 3 or 4 this year at VP5FOC. Like I said, just be sure to complete
> the loop by jumpering the pins 2 and 3 on ALL unused ports.
> One other point... Be sure to use seriel cables. NOT NULL MODEM
> CABLES. You made the cross over with the box wiring. This had the
> advantage of allowing you:
> 1. To use either a DB9 to DB25 modem cable (readily available) without
> any adapters. (the computer will use a db9 most likely on notebooks)
> 2. If you want to run them a long distance (Like I did at VP5VW last year),
> you may be able to buy long cables as much as 75' long with DB25's on
> both ends. Here, for a notebook you will need a DB9 to DB25 adapter.
> So, what I do is drag along the box (4"X4"X3" or so), seriel cables, and
> a couple jumper pins for the unused ports. And you are all set. No
> need to jury rig any Y-adapters. (Actually, I doubt a Y-adapter will
> work because the program works by sending the data around the
> network ONCE. It wont talk without a null modem type crossover
> If you want to see some documentation on this, try the NA Version 9
> manual. CT apparently did not bother to write up the documentation
> (or they forgot...? when they did Version 9...)
> Anyway, let me know if this works for you and share any problems
> you might encounter.
> GL in the contests!
> 73 de Doug, WD8AUB
> >Rich Thorne - WB5M
> >133 Light Falls Drive
> >Wake Forest, NC 27587
> >Submissions: email@example.com
> >Administrative requests: ct-user-REQUEST@eng.pko.dec.com
> >WWW: http://ve7tcp.ampr.org/mailing-lists/ct-user.html
> >Questions: firstname.lastname@example.org
----- Rod Greene, email@example.com, <>< -----
>From firstname.lastname@example.org (Eric & Bonnie Hall ) Thu Oct 3 03:03:33 1996
From: email@example.com (Eric & Bonnie Hall ) (Eric & Bonnie Hall )
Subject: CQP Midwest Strategy?
Hello Fellow Competitors:
I thought I might spark some discussion on strategies for the
Calif. QSO Party this weekend. So I hope the discussion is within our
I did some predictions on the bands to be on for the test based on
xmit QTH: Chicago (vert ant) recv QTH: Lost Angeles (dipole ant)
both residential locations
bandwidth is 500 Hz and power is 100 watts
(there was no parameter for midwest blackhole effect!)
160m 0500 through 1000z 11 => % Total reliability <= 18
0200 through 1300z 4 => S Mtr <= 6
80m 0100 through 1400z 10 => %T.R. <= 93
0100 through 1400z 5 => S Mtr <= 7
40m 0000 through 1600z 28 => %T.R. <= 99
0000 through 1500z 5 => S Mtr <= 7
20m 1400 through 0400z 15 => %T.R. <= 100
1400 through 0400z 6 => S Mtr <= 7
15m 1700 through 0100z 25 => %T.R. <= 70
1600 through 0100z S Mtr = 7
10m no predicted opening
I thought some of you might find this type of discussion
interesting even though it is for the midwest area of the U.S.?
I'm taking a management science class this quarter...It would be
interesting to use this information to develop a decision model for the
best band to be on to optimize your score. Anyone out there done this
Based on the %T.R. it would seem that the plan would be:
01-14z 40m (check 80m from 05-10z)
19z 20/15m even
73, Eric WD9GGY
:@) :@) :@) :@) :@) :@) :@) :@) :@) :@) :@) :@) :@) :@) :@) :@) :@) :@)
Bonnie & Eric Hall Lansing, IL, USA, 60438
(@: (@: (@: (@: (@: (@: (@: (@: (@: (@: (@: (@: (@: (@: (@: (@: (@: (@: