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Cat GPS tracking collars seem like a great idea for keeping tabs on your wandering feline. Outfit a tracking collar with a global positioning device that knows its current location at all times. The GPS device can then periodically send its longitude and latitude position to some base station by simply transmitting it over the cellular phone network. Once received, the location information is uploaded to a website which allows you to monitor your cat's location. Not only is this GPS tracking system a good idea, it's already being used in a variety of ways -- from car navigation systems to locating lost hikers.

However, the typical GPS cat tracking system is difficult to locate -- at least in the United States. The main problem is that GPS technology has not been miniaturized to the point of making GPS cat collars small enough and light enough for most household cats. Domestic cats are simply unable to bear the weight of the current GPS electronics and power supply.

The only websites that advertise GPS cat tracking collars seem to be located in Europe, and those particular European devices are fairly large -- weighing over 90g. Most average sized cats would only be able to carry an 80g tracking collar comfortably.

The other downside to GPS tracking collars, and this goes for both cat tracking collars and dog tracking collars, is that GPS collars typically have monthly fees associated with them. This is because the GPS collars will normally utilize the cellular phone networks for transmitting location information and the cellular networks all have monthly charges. So if you wish to avoid monthly fees you will have to use another type of technology for the cat tracking collar.

One of the best options that I have found is to use a short range radio tracking collar. This kind of tracking collar transmits a periodic beacon signal that is detected by a directional receiver. With the receiver you are able to tell in which direction your cat is located by how strong a signal you are detecting. In addition, as you get closer to the radio collar the beacon signal also gets stronger so you can determine both the relative direction and distance to your cat.

These short range radio cat tracking collars have two distinct advantages over the cat GPS collars. First, because they use free radio frequencies you avoid the monthly cellular network fees used by the GPS systems. Second, the electronics used with these short range devices can be made small and light enough for any domestic cat to wear. The tracking system on the collar only has to beacon a weak signal so the amount of electronics and power requirements are low. These types or cat tracking collars just need a small coin battery for power.

There is one disadvantage to using a radio tracking collar. Unlike the cat GPS locators you would not be able to pinpoint the longitude and latitude of your cat since the radio collar does not transmit any exact location coordinates -- just distance and directional information that you can detect via the relative signal strength with the directional receiver. However, since cats usually do not wander miles away in a short time span -- my cats are usually within a block of my house -- having exact location information to track on a website does not seem as critical in my view.

The other perceived disadvantage of a short range radio cat locator collar is that it will not work over long distances as compared to the GPS collar. That is only partially true. While a GPS collar that is using the cellular network may be able to transmit location information over a longer distance, cellular network systems are also susceptible to interference and signal loss. If your cat should wander into a hole or a cave or some area that is not being serviced by a cellular tower, then the GPS collar would not work.

A short range radio collar would be able to work in much more remote areas and in places where the cellular phone networks cannot reach since the radio collar only needs to transmit as far as the receiver while the GPS cat collar needs to transmit to the nearest cellular tower.

So consider a radio cat collar as a cat tracking device if you cannot find a cat GPS collar that fits your needs and budget.

Ken Harrison owns two cats and they both wear cat tracking collars. See http://www.mycattrackingcollars.com for more pet tracking information.

How Can I Block The Internet On A Laptop?

According to the Federal Trade Commission, approximately 9 million people each year have their identities stolen, some of them by online hacking. These days, most laptop computers are pre-configured for wireless Internet and can automatically detect WiFi signals from local hot spots. If you don't need to use the Internet and prefer to stay disconnected, there are several ways to blockyour laptop from Internet access, ranging from temporary to more permanent measures.  http://www.papatek.com/PCI-Wireless-LAN-Card/ 
 

Disabling specific connections temporarily
Look at the wireless network indicator. In most cases (for Windows users), this will be a small monitor icon in the system tray on the lower right corner of laptops running Windows. If there is no "X" through it, you are connected to the Internet. Right-click the icon. If you simply wish todisable the current connection, select "View Available Wireless Networks," then highlight thecurrent connection and select to disable it. If you want to disable the entire wireless connection for this session so it won't connect to any other hot spot, select the "Disable" option. This turns off the configuration your wireless card uses to find the Internet.

http://www.papatek.com/USB-Wireless-LAN-Adapter
Removing the network connection
Without a configured network connection, your wireless card cannot connect to the Internet. If you

want to remove that configuration more permanently, go to the "Start" menu, then "Control Panel,"and select "Network and Internet Connections." Open "Network Connections" and locate the wireless connection noted by a radio antenna icon. Highlight it, press "Delete," and confirm that you wish to delete it. Your wireless card will not be able to access the Internet again unless you create a new wireless connection in this panel. (If you see several wireless connections and you are unsure which

is in operation, delete all of them.) If you prefer not to remove the connection completely, right-click it and select "Disable," which should keep the connection turned off until you re-enable it.

Disabling the internal wireless card
Another more permanent way to block the Internet is to disable the wireless card. Go to the "Start" menu, then "Control Panel," and select the "System" icon. (Change the Control Panel to Classic View,

if necessary, to find the "System" icon.) This pulls up the "System Properties" window. Select the

"Hardware" tab, then "Device Manager." Look for "Network Adapters" in the directory list, and click the plus sign to open the list of adapters. Locate the wireless card, right-click it, and select"Disable." This turns off the internal wireless card until you re-enable it.

Tips and Warnings
If you choose to disable the wireless card through the Device Manager, be careful to select the correct adapter to disable. If you are unsure which one it is, do not take this step. That way you won't disable the wrong thing and possibly cause more serious problems.

If you are using a Mac rather than a PC running Windows, the process will look a little different. http://www.papatek.com/Ethernet-PCMCIA/200Mbps-PowerLine-Communication-Adapters.html

 Most MacBooks use the AirPort wireless card, which can be controlled and disabled by clicking the radio signal icon in the top right area of the screen.

About the Author

I have a 283 small block V8. The timing tab is rusted and I don't know if advanced is right or left of zero.

I also don't have a clue where TDC is. Is it at the center of this rusted out tab?

Can anybody tell me where on the rusted tab I should set the timing? Roughly center? Left of center an 1/8th of an inch? Right of center?

I sure would appreciate an answer from somebody who knows.

Thanks!

The advance always moves the mark left, or counter-clockwise when under the light. Most small blocks have teeth or notches every 4 degrees; with the bottom of the "deepest" notch being 0* Top Dead Center. If your spec is 4* BTDC you just count over 1 notch from the deep 0 and set your timing. If you have the "smooth" timing tab, and can see the marks at all, TDC is the 3rd mark from the right, and each mark is 2*.

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