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1  eHam Forums / Computers And Software / RE: Someone Thought This Was A Good Idea... on: October 22, 2012, 11:22:36 AM
    I can't see supporting such a relic.  I went through FIVE of the units in the first few months due to hardware failures, and "undocumented failures," until I got a REAL computer, an Apple ][+.  That worked reliable for years, and is still cooasionally used for packet radio.

    One "joke of the day' was that the space shuttle initially carried dozens of Commode Door 64 computers , and swapped them out until one would actually work.
2  eHam Forums / Computers And Software / RE: Hijackers on: February 22, 2012, 02:44:45 PM
All your statements are true.  Except when it comes down to a day one infection. 

In a corporate environment, many users have roaming profiles that as long as they do the right things have a copy of their files stored safely on a protected server.  I can ghost a drive from a gold image MUCH faster than I can get the drive out of the system, haul it over to another system, and then try and fix whatever virus or rootkit has taken over the drive and then return it to the original machine.

Besides, I like making people learn from their mistakes.  Lost data is a great teacher!

    But lost data may also be a loss to the company if the user has important data. There are other, better ways to "teach a lesson."  Lost data isn't always just personal to the individual (or individuals) that use the particular computer. 
    I find that strategy very user (and quite often employer) antagonistic and abusive, and some supervisors might think insubordinate.  Unless you're the ultimate "boss," I'd reconsider such a policy very carefully.
3  eHam Forums / Computers And Software / RE: Windows 7 SP1 on: May 15, 2011, 10:17:59 PM
The problem is no where near as wide spread as you suggest. I have restored systems that were badly infected and others wanted to wipe and reinstall. Also even if you were to have a bad install of a SP you could simply do a restore and rebuild of boot info or worst case mount drive in another system to recover data. I regularly back up my important data but do not bother with regular complete system backups. I might mention that I replace hard drive every few years whether needed or not in all my systems. I image old drive to new and swap them out.

    The only problem with an "image" backup to a new drive is that it copies any glitches, errors, malware, viruses, corrupted files, and other detritus that has accumulated over the years that may be on the original drive.

4  eHam Forums / Elmers / RE: Safe operation during a lightning storm on: May 03, 2011, 07:22:24 AM
There are two issues to consider.

    The first, is that if your home is directly hit, even an "indoor" (attic, etc.) antenna and equipment may well be severely damaged.

    However, even if a a nearby location receives a lightning strike, there CAN easily be damaging impulses induced into even indoor antennas!  So grounding is an important consideration, even for indoor antenna installations.
5  eHam Forums / VHF / UHF / RE: 2 Meter radios subject to Part 15? on: December 21, 2009, 07:06:07 AM
Since Riley has retired from the FCC, how did he "contact someone in the office?"  As said previously, the claim is nonsense.  The FCC Certification ensures that the RECEIVER portion of Amateur equipment complies with the radiation limits for Part 15 above 30 MHz, and has NO bearing on what frequencies the radio is actually capable of receiving.
6  eHam Forums / Antennas and Towers and more / Hy-Gain 4 element Yagi Identification on: March 24, 2009, 02:53:51 PM
That doesn't sound right.  By "elements," are you referring to what might be half of a dipole (i.e., two "elements" would make up a driven element, reflector or director of a typical Yagi design?))

    It might be a 2 element 15 Meter beam...

    But there's no 4 element beam with "elements" that are 14 feet that would fit on a 10' boom.

    It could also be a homebrew hybrid, using some Hy-Gain parts...
7  eHam Forums / Computers And Software / totally removing windows and installing DOS on: March 21, 2009, 06:30:57 AM
But Virtual PC2004 doesn't eliminate the MS-DOS 2 GB limitation, does it?  You would still need a 2 GB or less partition for DOS to operate.  (And DOS won't recognize  files on partitions larger than 2 GB.)
 
8  eHam Forums / Computers And Software / totally removing windows and installing DOS on: March 19, 2009, 03:51:23 PM
Surprised nobody asked about the size of the hard drive or commented:  DOS 6.22 won't recognize a partition greater than 2 GB.  You'd have to first use FDISK (from a DOS boot floppy) to create partitions 2 GB or smaller. Then format the individual partitions, and run "SETUP" from the DOS 6.22 install floppy.
9  eHam Forums / Misc / Neutral connected to chassis? on: December 22, 2008, 04:57:17 PM
N4CQR on December 5, 2008       Mail this to a friend!
Years ago (abt 1979 I think) many TV sets were wired this way. GE especially. Typical internal stickers said "WARNING Hot Chasis" We used a isolation transformer (B&K-something I can't remember) for safety during service.

I see people replace a cord cap on a lamp and pay no attention to the polarity. And in a number of cases I have seen the hot side of the line connected to the base threads rather than the socket's center contact.
Same goes for extension cords.
 
--------------------------------------------------

    At one time, it WAS common with "isolated" chassis equipment, where the user had no possible (under normal use) contact with the chassis.  But it's not standard NOW, and foolish, whether for a manufacturer or a "DIY" enthusiast.

    But normal lamp sockets (such as for table lamps) do NOT have exposed surfaces that are or can be connected to either side of the line cord so there should really be no significant difference as to how they are wired.  (Of course, wiring errors can pose a hazard to even the best designed systems.)
10  eHam Forums / Elmers / modification on: November 01, 2008, 07:34:43 AM
The modification of Amateur equipment for transmission outside the Amateur bands is not, nor is it considered, illegal.  the USE of such equipment to transmit outside the Amateur bands IS illegal; the sole exception is a MARS authorized station.  (CAP or other services no longer permit use of modified Amateur equipment.)
11  eHam Forums / Elmers / Cantenna oil on: August 12, 2008, 07:13:30 AM
Local vet supply;
    Otherwise, 99 Cent stores, Dollar Tree, etc. usually have pint bottles.  That adds up to $8.00, not $48.00 for a gallon.
12  eHam Forums / Amplifiers / Testing a 4CW10000(Y442) without socket??? on: August 12, 2008, 06:42:48 AM
To SOME people, that IS "QRP."

    But has anyone (else) noticed the electric rates lately???
13  eHam Forums / Elmers / How can I turn in an Extra Class Ham Operator on: June 02, 2008, 04:54:46 PM
 WA3SKN on June 2, 2008     
"He boasts about changing frequencies and listening in on cellphone calls, Cordless Phone calls."...this is not illegal, but divulging it is, per the Communications Act of 1996!
------------------------

    Actually, just listening to cell phones IS technically illegal.  Divulging ANY non-public broadcast radio transmission except Amateur and CB has been illegal since the Communication Act of 1934 (as amended from time to time.)

    But the original post asys the person in question boasts of such astivities.  I find many people BoaSt (note the capitalized letters) about things they imagine as much as activities they actually accomplish.  Proof of such activities would be requred for complaints to the FCC or law enforcement, not merely verbal claims.
14  eHam Forums / Elmers / PL 259 connectors on LMR ultraflex 400 on: June 02, 2008, 04:45:34 PM
Remember that a "PL-259" is a UHF male connector (plug,)  but NOT all UHF male connectors are PL-259's.

    There are many variations, but the true PL-259 is the two part, soldered shield version, and it's well worth getting a name brand connector (Amphenol, Kings,) than trying to save a $ or two on low quality or cheap connectors.  The connectors are NOT cheap when you have to take an antenna down from a tower to replace a coax connector, or have to have a radio repaired because the finals were destroyed because of a faulty connector.  Good quality, name brand PL-259's can be obtained for as little as $2.00; sometimes bagged Amphenol silver plated PL-259's can be found at hamfests/swapmeets for as little as $1.00.
    And ANY of the "0.405 inch" diameter (i.e., RG-8 type ) cables will take the standard PL-259.  That includes RG-213/U, Belden 9913, and LMR-400 in all it's variations.  
15  eHam Forums / Mods And Repairs / RG-213 on: June 01, 2008, 05:53:13 PM
A very, VERY, VERY,light dab of liquid hand soap, spread around the outer insulation of the coax, spread around, will make "screwing on" the PL-259 easier to install.  But remember, the whole purpose IS for the plug to "screw onto" the coax, for at least a semblance of weather resistance. and to form a seal to the outside environment.  
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