--
----------------------------------------------------------------------
-----
| Ron Stone, GW3YDX - EMail ron@gw3ydx.demon.co.uk
----------------------------------------------------------------------
----
Chaps
Will only one motor on the 1102 do the business please ?
73
Ron
>From David Robbins KY1H <robbins@guid2.dnet.lmco.com> Thu Sep 28 12:00:49 1995
From: David Robbins KY1H <robbins@guid2.dnet.lmco.com> (David Robbins KY1H)
Subject: contest welfare system
Message-ID: <199509281058.GAA30853@franklin.vf.mmc.com>
>or just plain cheat. It would just redistribute the certificates sort of
>like welfare redistributes the wealth . . . :-)
>
>Stan W7NI@teleport.com
just what we need a 'feel good' democratic plan to redistribute contest
points. pretty soon we would end up with people sending in logs with no
qso's just to get their free certificates while the rest of use are hard
at work.
73, Dave KY1H Robbins@guid2.dnet.lmco.com
>From w7ni@teleport.com (Stan Griffiths) Thu Sep 28 12:01:33 1995
From: w7ni@teleport.com (Stan Griffiths) (Stan Griffiths)
Subject: Rohn Torque Bars
Message-ID: <199509281101.EAA01837@desiree.teleport.com>
Here is that Torque Bar Summary that I promised awhile ago. I got only a
few responses and I am sure that is because I asked for the facts and not
gut feelings and speculation. Regarding torque bars, most everything out
there is gut feelings and speculation . . .
Before we move on, I have to clarify one possible point of confusion. There
are two distinctly different systems sold by Rohn for 25G, 45G, and 55G that
relate to stabilizing the tower in a torque situation. Each of the two
different systems works the same on each size of tower but the two systems
are quite different from each other.
System 1:
For a 45G tower, this consists of a GA45GD Guy Bracket and a set of TB45D
Torque Bars. The Guy Bracket can be used with or without the Torque Bars.
This system can be used at any or all guying levels on the tower.
System 2:
For a 45G tower, consists of a TA45 Torque Arm Stabilizer Asssembly. This
the big steel triangle usually found at the top of the tower but it can also
be used at any or all guying levels on the tower (where ever there is a
tower section joint). This system requires 6 guy wires per level rather
than the normal 3.
I did a lot of editing and here are the highlights:
>From K1ZX:
After hurricane Andrew, noticed several commercial towers still standing.
Many were down. The ones that survived used 6 guys per level (like system
2, above, I think. W7NI) Jim and his parents opted for the 6 guy wires per
level scheme at their new QTH and Jim says it has the added advantage of
allowing you to remove a guy to work on it without having to worry about
installing a temporary in its place.
Jim also points out that if you plan to use egg insulators to break up your
guys, you just doubled the cost of that with the 6 guys per level scheme.
Jim did not say if he used the TA45 steel triangles or not.
K8DO
Just put 150 feet of 25G using Phillystran. Used guy brackets but did not
like the torque bars so did not use them. Denny plans to see how the tower
reacts under the load of several antennas, some sidemounted, and stablize it
with homebrew torque triangles, starting at the top, until he is satisfied.
KE3Q
Has 120' of 45 up with Rohn guy attachments and torque arms. (Sounds like
system 1 to me). Tower has 18' of 3" mast with 8 el 15 Telrex (45' boom) at
top and 6 el 20 Telrex (46' boom) at thrust bearing.
Also has 160' of 45 with 6 el 10 Telrex at 160' and 2 el 40 Telrex at 170'.
Has guy attachments but no torque arms since Rohn had none to sell him at
the time. (More on this later. W7NI)
Towers have been fine for 2 years.
N4ZR
Just put up 100' of 25. Has guy attachments at 32, 63, and 95' levels with
torque bars at 63 and 95. No torque bars at 32. That was at the advice of
local tower folk who also advised the use of a pier pin at the base. (which
I assume allows the tower base to rotate slightly with respect to the
concrete, right? W7NI) Pete wishes he had torque bars at 32' also but has
confidence it will stay there without them.
N6VI/KH6
Has 6 each 90' Rohn 45 towers with big antennas on them (two el 75, 8 el 15,
etc). All towers guyed at 30, 60, and 90' and use guy attachments and
torque bars. Notices significant twisting in 30+ winds and concludes that
torque bars don't help much. Plans to install 36" to 40" of C-channel at
the top across one face of each tower to limit tower twisting from stop and
start of antenna rotation.
NQ4I
Has 3 towers and does not believe torque bars help at all. One tower is
120' of 45 with 3 el 40, 6 el 20, 4 el 15, 8 el 10, and 3 el 20 all on the
same tower guyed at two levels.
Had one tower failure in the past but it was not due to torque bars or lack
of them. It was improperly installed cable clamps.
W7NI
Have 100' of 25 guyed at 4 levels with 6 el 15, 5 el 10, 4 el 10, another 4
el 10, and 4 el 15. Also have 80' of Rohn "JJ" (bolted 45) with 4 sections
of 25 spliced on top with 3 el 40, 3 el 20, and small tribander, guyed at 4
levels. Also have 110' of AB105 with 5 el 20 (48' boom) guyed at 3 levels.
Use no guy attachments or torgue bars on any of them. All towers have been
up since 1974.
WB9TIY
Likes guy brackets but thinks torque bars don't help. (system 1) Thinks the
Torque Arm Stabilizer Assembly (system 2) is well worth the effort and
expense and has installed one on the top of his tower along with the 3 extra
guys it takes.
ROHN COMPANY
I called Rohn in Peoria to discuss this with one of their engineers. They
did not have any written study they could offer (they are very nervous about
putting anything in writing other than what you get in the standard catalog,
and I can understand this, too, in today's litigation-happy society.)
However, he did give a little background about torque bars (system 1) and
their availability and unavailability from Rohn.
They were available in the mid '70s when I first became a Rohn dealer. Some
people used them; some didn't. Rohn didn't comment one way or the other.
Sometime after that Rohn discontinued the torque bars but retained the guy
attachment hardware, claiming the torque bars really didn't help. Customer
demand forced them to make them available again but the Rohn engineer I
talked with on the phone last week still maintains they don't do anything
for you. My tendency is to believe the Rohn engineer, however, I am a Rohn
dealer and if you offer me money, I will order you some torque bars. Both
Rohn and I will enjoy the trip to the bank . . .
The Rohn engineer did say that the Torque Arm Stabilizer Assembly was a
different story and that really does do some good. He highly recommends
using them, at all guying levels, not just the top where we usually see
them. Of course this means 6 guys at each level . . .
So there you have it. Everything you ever wanted to know about Torque Bars,
right?? Somehow, I don't feel any smarter about this than I did before . .
. I didn't get one single comment from anyone who thought torque bars
actually saved his tower nor did I get any negative comments about them
other than they cost money.
Stan W7NI@teleport.com
>From Dr. Eugene Zimmerman" <ezimmerm@DGS.dgsys.com Thu Sep 28 13:27:46 1995
From: Dr. Eugene Zimmerman" <ezimmerm@DGS.dgsys.com (Dr. Eugene Zimmerman)
Subject: Contest activity and scoring
Message-ID: <Pine.SOL.3.91.950928080726.29209A-100000@DGS>
Stan
The last time I looked, there were NO handicaps in any of the
professional golf events and certainly none in the major championships
like the Masters, the British Open, etc. Each course is different and
plays to different strengths and weaknesses. The only place there are
handicaps are in events like club tourniments.
The same is true of contests. They are not geographically fair and were
never intended to be so. If you live here in MD you will never be the
top score in the SS. If you live in the Black Hole in Wisconsin you will
never be the top score in the DX contest even if you have a wonderful
station like W0AIH's. The best stations in Europe are never going to
have a score as large as the best stations in Zone 9 or Zone 33 in the
CQWW. If you choose to compete, the new formats that
compare scores from different regions are very helpful. But if you want the
top score, you will have to choose the right contest, the right part of
the sunspot cycle or move.
73 Gene W3ZZ
> Really want to level the field? I doubt it, but this will do it. Give the
> winners a scoring handicap. I'm not a golfer, but don't golfers play with
> handicaps based on the scoring history? That way a mediocre golfer can play
> with a good one and have a chance of winning, right?
>From Greg Becker <gb546@bard.edu> Thu Sep 28 13:44:07 1995
From: Greg Becker <gb546@bard.edu> (Greg Becker)
Subject: Contest voice blaster
Message-ID: <Pine.A32.3.91.950928084121.39932B-100000@core.bard.edu>
Anyone have any experience with the Contest Voice Blaster (software that
allows you to use a Sound Blaster computer card as a voice keyer), good
or bad? Advice? Recommendations?
I have a DVP that works well, but just installed a sound card and am our
of slots. Wondering if the sound card connections would be easier to work
with for setting up a two-radio contest system than the DVP is...
Please reply via email, and I'll try to summarize to the reflector.
73, Greg
Greg Becker NA2N
gb546@bard.edu
>From John-Warren@easy.com (John Warren, NT5C) Thu Sep 28 14:07:09 1995
From: John-Warren@easy.com (John Warren, NT5C) (John Warren, NT5C)
Subject: contest welfare system
Message-ID: <1399846828-2811983@BANJO.EASY.COM>
|or just plain cheat. It would just redistribute the certificates sort of
|like welfare redistributes the wealth . . . :-)
|
|Stan W7NI@teleport.com
|
|just what we need a 'feel good' democratic plan to redistribute contest
|points. pretty soon we would end up with people sending in logs with no
|qso's just to get their free certificates while the rest of use are hard
|at work.
|
|73, Dave KY1H Robbins@guid2.dnet.lmco.com
----------------------------
Don't worry, I heard there is actually a republican plan to give 250K bonus
points to anyone who previously scored over 2M, and no longer to accept any
contest entries below 500K.
John, NT5C.
>From Chad Kurszewski" <kurscj@OAMPC12.csg.mot.com Thu Sep 28 14:08:33 1995
From: Chad Kurszewski" <kurscj@OAMPC12.csg.mot.com (Chad Kurszewski)
Subject: CT M/S QSY
References: <znr812117515k@leotech.mv.com> <9509261218.ZM6253@dr.att.com>
Message-ID: <9509280808.ZM8199@WE9V>
On Sep 26, 12:18pm, LondonSM wrote:
> Subject: Re: CT M/S QSY
> IMHO, intentionally working a dupe violates the spirit of the rules.
What about that 5 minutes (or more) that it takes a Midwest or West Coast
station to break through the pile-up to a 160M EU mult? That no longer is
considered "being on the band"?? Is that within the spirit of the rules?
Meanwhile your third radio is on 80 working other mults....is that the
spirit of the rules? Now, it's _perfectly_ acceptable, by present rules,
to have three transmitters on silmultaneously. Hmmmm...
> Working a dupe by the MULT station to start the 10 minute clock would
> be a clear violation of the rules (the dupe is obviously not a new
> multiplier !).
True, but at least it would prove you were on the band that early and
be able to move the mult station back to 80M sooner.
--
Chad Kurszewski, WE9V e-mail: Chad_Kurszewski@csg.mot.com
Sultans of Shwing Loud is Cool....yeah, heh, heh, heh, LOUD IS COOL!!!
The Official Sultans Web Site: http://www.infoanalytic.com/ka9fox/sos
>From Tony Brock-Fisher <fisher@hp-and2.an.hp.com> Thu Sep 28 14:05:02 1995
From: Tony Brock-Fisher <fisher@hp-and2.an.hp.com> (Tony Brock-Fisher)
Subject: Protecting Receivers
Message-ID: <9509281305.AA14564@hp-and2.an.hp.com>
Here is a proven method for protecting receivers:
Use a .063 Amp (1/16 amp) fast
blow fuse in line with the receiver. Use it downstream of any receive
filters you might have in line.
So far, I have blown three fuses and *ZERO* receivers.
The fuses are available from Digi-Key or Radio Shack.
-Tony, K1KP, fisher@hp-and.an.hp.com
>From jbl@levin.mv.com (Joel B Levin) Thu Sep 28 06:21:56 1995
From: jbl@levin.mv.com (Joel B Levin) (Joel B Levin)
Subject: Rust prevention. Was: concrete curing
Message-ID: <199509281322.JAA16721@granite.mv.net>
At 13:21 9/27/95 CDT, Kris I. Mraz wrote:
>Someone told me that the part of the base section buried in concrete should
>be painted with roofing tar to prevent acidic attack by the concrete and
>moisture within the concrete.
Might this be a problem if you are using the foundation as a UFER ground?
/JBL KD1ON (jbl@levin.mv.com)
|