Section 9 - Miscellaneous Return to Home Page
1. Life's Priorities
2. Miscellaneous MAC info
3. Teach Your Children Internet Safety Links to: (PC World Mag, Aug 97, pg 288, "Rules for Online Safety")
4. Control your Post Office
5. Understanding TV Antennas
6. Wire Gauge Chart (Check those AMPs)
Subject: Life's Priorities (by Paul Schuh)
Priorities
1. Urgent and Important (can't live without)
2. Important but not Urgent (later on development)
3. Urgent but not Important (appears hot, but really isn't)
4. Busy Work (see number 5)
5. A Waste of Time
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Subject: MAC Info x3
A. MAC Batteries
They come in different numbers, but seem to all be the same. Some are
soldered in. The one that can be easily pulled out and replaced are:
3.6 volt Lithium cells (size 1/2 AA)
Tadiran TL-2150
Maxell ER3S (these tend to die much faster than the other kind)
SAFT LSL3 (France)
B. Networking MACs
If you're connecting MACs running OS 8, File Sharing MUST be
turned on to even see the computer. Older OSs can see the units,
but they can't see the older units either. It's as if there not
even connected.
C. MAC Default Configuration
To force a MAC to re-configure itself, hold down the following four
keys and turn the unit on.
Hold down Apple (Command)-Option-P-R at startup.
There's more info at: http://user.icx.net/~bgiles/miscmac/trouble.html
Hold the four keys down until the unit chimes for the third time.
Let go and it should reboot with a default configuration (re-sync
itself to new monitor).
This is called "Zapping the P-RAM". In PC terms, re-configuring the CMOS.There's more info at: http://user.icx.net/~bgiles/miscmac/trouble.html
(correct keys and this link supplied by Scott Genevish)
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Subject: Mail Games
Taken from a discussion of how the Post Office sells your address:
In the meantime, some people, prompted by Bob Bulmash of Private Citizen, are using a clever means to get around NCOA.Heck, you may want to do it, too. When you fill out a change of address card, you designate the move as permanent or temporary. Mail is forwarded for up to a year in both cases, but addresses are only sold if the move is permanent.
The trick is to mark the temporary box and say the move is for 364 days. You will get your mail forwarded for a full year less one day, but your new address won't be added to the NCOA list.
That groups like Private Citizen need to develop counter-responses to data-use programs such as NCOA should give pause to every federal manager who handles or disseminates data on citizens.
Information from:
Robert Gellman, former chief counsel to the House Government Operations Subcommittee on Information, Justice, Transportation and Agriculture, is a Washington privacy and information policy consultant. His e-mail address is rgellman@cais.com.
Subject: Understanding TV Antennas
Lessons learned the hard way:
1. Signal strength doubles if you triple the height of the antenna.
Better put; if your antenna is on a 10 foot mast, you can double
the signal you receive by raising the mast to 30 feet.
2. You are better off using a larger antenna than a smaller antenna
with an amplifier. Using an amplifier not only increases the TV
signal, it also increases AC noise coming from the power poles
anywhere within a half mile of your house, and should there be an
FM radio station between you and the TV transmitter, you will
amplify the harmonics of the radio transmitter, most likely wiping
out channel 7 or channel 8 (FM radio band transmitted between those
two channels). A non-amplified antenna will not pick up any of the
noise or off frequencies that an amplifier brings forth.
If you already have an antenna with an amplifier and you are picking
up a signal that is interfering with a channel, Winegard makes a
tunable trap to remove the noise. It needs to be attached directly
to the amplifier on the antenna. Even better is a sealed tuned trap
usually available from the radio station that's causing the problem.
If you are getting AC noise, call the power company. By law they are
required to fix whatever it is that is causing the noise. Usually a
cracked insulator.
3. How to figure length of guy wire, or what you can't remember from
High School. Easily said, here it is:
A-Squared + B-Squared = C-Squared
AWG Diameter Amps Ohms/1000' Electrical Dry/Wet ------------------------------------------------------------- High Temp Insulation 0000 .460 312. 0.04906 Nat'l Elect Code 000 .40964 262. 0.06186 260 00 .3648 220. 0.07801 225 0 .32486 185. 0.09831 195 1 .2893 156. 0.12404 165 2 .25763 131. 0.1563 115/95 140 3 .22942 110. 0.19723 100/80 120 4 .20431 92.3 0.24869 85/70 105 5 .18194 77.6 0.31361 6 .16202 65.2 0.39546 56/55 95 7 .14428 54.8 0.49871 8 .12849 46.1 0.6529 45/40 60 9 .11443 38.7 0.7892 10 .10189 32.5 0.8441 30/30 - Can handle more but 30 is code max 11 .090742 27.3 1.254 12 .080808 23.0 1.580 20/20 - Can handle more but 20 is code max 13 .071961 19.3 1.995 14 .064084 16.2 2.504 15/15 - Can handle more but 15 is code max 15 .057068 13.6 3.172 16 .05082 11.5 4.001 24 17 .045257 9.6 5.04 18 .040303 8.1 6.36 18 19 .03589 8.25 20 .031961 10.12 21 .028462 12.76 22 .025347 16.25 23 .022571 20.30 24 .0201 25.60 25 .0179 32.2 26 .01594 40.7 27 .014195 51.3 28 .012641 64.8 29 .011257 81.6 30 .010025 103. 31 .008928 130. 32 .00795 164. 33 .00708 206. 34 .006304 260. 35 .005614 328. 36 .005 414. 37 .004453 523. 38 .003965 660. 39 .003531 832. 40 .003144 1049.Grounding Cables (Reference NEC Table 250-122 (National Electrical Code)) Main Breaker - Copper Wire Size 60 10 100 8 200 6 300 4 400 2