This thread about the peir pin got me thinking. I have a 90' 25g tower up
and would eventually like to replace it with 45G. First thought is to
have a back hoe dig out the 25g concrete and re-pour for the 45g base.
I used the 25g short base section in my concrete. Its 3.5' long.
Since a pin is enough to hold 45G to specs, I was thinking on manufacturing
a reducer plate so I could mount 45g on the 25g base. Please note the 25G
base was dug and poured to 45g specs. This would be a triangle plate with
stubs on the bottom to fit into the 25g and legs on the section, and stubs on
the top to fit into the 45g straight section.
I am not an engineer, and its probably not the right thing to do, but I
thought I would ask the multitude.
73,
Rich - WB5M - RTHORNE@VNET.IBM.COM
>From Michael Owen <MOWE@SLUMUS.STLAWU.EDU> Thu Aug 25 13:26:08 1994
From: Michael Owen <MOWE@SLUMUS.STLAWU.EDU> (Michael Owen)
Subject: I'm starting a pool...
Message-ID: <25AUG94.09110683.0023.MUSIC@MUSIC.STLAWU.EDU>
The date for the 1996 ARRL National Convention has been announced...
the 2nd weekend of September. Gee... that coincides with *another*
VHF contest. What a surprise!
Who wants to wager whether the contest gets bumped? (he asked, through
tightly gritted teeth.)
MRO
************************************************************************
Michael R. Owen, Ph.D. a.k.a.: W9IP
Department of Geology Northern Lights Software
St. Lawrence University Star Route, Box 60
Canton, NY 13617 Canton, NY 13617
(315) 379-5975 - voice - (315) 379-0161 (6-9pm)
e-mail: MOWE@SLUMUS FAX - (315) 379-5804
************************************************************************
>From Dravland, Todd" <ToddD@dci.state.sd.us Thu Aug 25 16:26:00 1994
From: Dravland, Todd" <ToddD@dci.state.sd.us (Dravland, Todd)
Subject: NAQP SSB score
Message-ID: <2E5CB809@sdmailgw.state.sd.us>
Call: WD0T Location: SD
Category: Single Op All Band Mode:SSB
Power: 100w
Hours of Op: 0 hrs. 30 mins. ( 2138-- 2208)
160 0 0 No ant. , too early anyhow
80 0 0 Broken dipole, ditto
40 6 5 2 ele @ 45'
20 24 10 Tribander @ 40' , Best band!
15 0 0 ditto, only heard South America
10 0 0 ditto, nothing heard
----------------------------------
30 15 = 450 pts.
Team: Sultans of Shwing NAQP SSB Team #4
Notes:
30 minutes of S&P between end of couples Golf tournament and
going out to eat with friends. Almost sprint like activity to get all
equipment
connected, operational, then torn down. But, worth it!! Best sig. on 20m
W1OP, best on 40m K4XU. Best name heard OJ. Winding down the tournament
golf season in another month, then on to CONTEST SEASON, YES YES!!
Todd, WD0T
ToddD@DCI.STATE.SD.US
>From sellington" <sellington@mail.ssec.wisc.edu Thu Aug 25 09:39:06 1994
From: sellington" <sellington@mail.ssec.wisc.edu (sellington)
Subject: Radials and Aluminum Wire
Steve Harrison writes:
Two days later, I sadly concluded, after observing that the bandwidth of
the quad was greater than 500 kHz before the SWR exceeded 1.5:1, that the
aluminum wire was doing a better job of heating the local environment
than exciting the ionosphere. Dragged out the ohmmeter and measured a couple of
ohms.
***************
There must have been something else going on. Even if the RF resistance
was considerably higher than the DC resistance, like a factor of 2, the
loss would only have been a fraction of a dB. The RF resistance of
aluminum wire is only 23 percent greater than that of copper.
The only real problem with aluminum wire is what happens to it when it's
in contact with the ground.
Scott K9MA
sellington@mail.ssec.wisc.edu
>From Peter G. Smith" <n4zr@netcom.com Thu Aug 25 14:45:55 1994
From: Peter G. Smith" <n4zr@netcom.com (Peter G. Smith)
Subject: more on elevated radials
Message-ID: <Pine.3.89.9408250622.A4268-0100000@netcom>
Isn't there another possible explanation for the reduced bandwidth when
elevated -- that resistive ground losses in parallel with the antenna
input impedance gave you the illusion of bandwidth.
73, Pete
N4ZR@netcom.com
>From H. Ward Silver" <hwardsil@seattleu.edu Thu Aug 25 15:28:04 1994
From: H. Ward Silver" <hwardsil@seattleu.edu (H. Ward Silver)
Subject: Multi-Contesting
Message-ID: <Pine.3.07.9408250750.B4792-a100000@bach>
So, let's see, you've now created the following categories:
Single-Single: one op, one contest
Single-Multi: one op, multiple contests
Multi-Single-Single: multiple ops, one tx, one contest
Multi-Single-Multi: multiple ops, one tx, multiple contests
and the all powerful
Multi-Multi-Multi: multiple ops, multiple tx, multiple contests
Let's all rassle about whether you can have more than one signal per band
if the different signals are calling CQ for different contests. What
happens when you get a CQP reply to your NAQP CQ? Ow! My head! What
happens when a MMM works an MMM? Sorta like QTC in WAE, but
multi-dimensional.
"Help, Mr. Wizard! I don't want to be a contest op any more!"
And then there's the Assisted variants...makes Single-Single sound so...
pedestrian, so...adagio!
:-)
73, Ward N0AX
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