Left Border Content - RF Cafe
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Copyright: 1996 - 2024
Webmaster:
Kirt Blattenberger,
BSEE - KB3UON
RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling
2 MB. Its primary purpose was to provide me with ready access to commonly needed
formulas and reference material while performing my work as an RF system and circuit
design engineer. The World Wide Web (Internet) was largely an unknown entity at
the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps
while typing up your telephone line, and a nice lady's voice announced "You've Got
Mail" when a new message arrived...
All trademarks, copyrights, patents, and other rights of ownership to images
and text used on the RF Cafe website are hereby acknowledged.
My Hobby Website:
AirplanesAndRockets.com
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Sub-Header - RF Cafe
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Tech Smorgasbord Archives - 5 |
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Cyber Attacks on
Cellphone Batteries
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| Draining cellphone batteries is a new sport by hackers. By usurping control of communications
channels that a cellphone uses for broadband data transfer, an attacker repeatedly awakens
a victim phone from its low-power mode. Verification tests were run on a Nokia 6620 phone
at UC Davis that were able to reduce a battery's lifetime from 156 hours to a mere 7 hours
from a fully-charged state. The process was carried out through two commercial networks without
triggering any intruder alarms. |
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Unemployed Electrical &
Electronics Engineers
EE Times Research
2006
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| Year |
Qty. |
% |
| 2005 |
6000 |
1.8 |
| 2004 |
18,000 |
2.4 |
| 2003 |
24,000 |
6.3 |
| 2002 |
16,000 |
3.8 |
| 2001 |
6,000 |
1.6 |
| 2000 |
6,000 |
1.4 |
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Planned Retirement
Income Sources by Age Group
IEEE-USA Research 2006
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| Source |
Ages |
% |
IRA and/or
401(k) |
18-34 |
65 |
| 35-49 |
57 |
| 50-64 |
41 |
| 65+ |
23 |
| Pension |
18-34 |
29 |
| 35-49 |
37 |
| 50-64 |
37 |
| 65+ |
38 |
Stocks
and/or
Mutual Funds |
18-34 |
42 |
| 35-49 |
33 |
| 50-64 |
27 |
| 65+ |
33 |
Social
Security |
18-34 |
24 |
| 35-49 |
29 |
| 50-64 |
44 |
| 65+ |
60 |
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Semiconductor Component
Spending by Country
Microwaves & RF
Research 2005
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| Country |
$109 |
%Mkt |
| U.S. |
58.70 |
33.5 |
| Japan |
45.72 |
26.1 |
| Taiwan |
17.34 |
9.9 |
| Germany |
10.21 |
5.8 |
| China |
9.514 |
5.4 |
| S. Korea |
9.233 |
5.3 |
| Others |
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14.1 |
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September 2005
Internet Statistics
Scientific
American Research 2006
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Every Day of the
Month:
| 94 million people use the Internet |
| 77% wrote/read e-mail |
| 63% used search engines |
| 46% read online news |
| 29% did job-related research |
| 18% instant messaged |
| 18% banked online |
| 5% booked travel |
| 3% read blogs |
| 3% participated in an auction |
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2005 EE Salaries
U.S., E.U., & India
EE Times
Research 2006
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| Title |
$US Mean |
| VP of Engr. |
128,079 |
| Tech. Director |
119,127 |
| Principal Engr. |
109,962 |
| Consultant |
95,085 |
| Group Leader |
93,514 |
| Sr. Engineer |
91,903 |
| Systems Engr. |
86,596 |
| Sr. Test Engr. |
85,222 |
| Project Engr. |
80,124 |
| Software Engr. |
74,235 |
| Design Engr. |
71,659 |
| Test Engr. |
69,649 |
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Perfect 2-Carat Man-Made
Diamonds
|
 Perfect single-crystal diamonds
of more than two carats are churned out in a single day. The gemstones are created using a
process called chemical vapor deposition (CVD), which grows diamond crystals one carbon atom
at a time. CVD is the same technique used to process many semiconductor circuits. |
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Gallium is a byproduct of smelting aluminum and zinc, and is more rare
than gold. It, along with mercury, cesium, and rubidium, are the only metals which can be
liquid near room temperature.
Arsenic is a deadly poison that is made by heating composite minerals
in the absence of air.
Acting together in compound form, gallium arsenide (GaAs) has been the basis of the
personal communications revolution.
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Amount of Greenhouse
Gases (CO2) Emitted by Household Appliance Use
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| Item |
lbs/yr |
| Heating |
6643 |
| Air Conditioning |
4566 |
| Hot Water Heater |
2384 |
| Refrigerator |
2032 |
| Dryer |
1770 |
| Dishwasher |
840 |
| Computer |
430 |
| Microwave |
343 |
| Washer |
197 |
| Television |
196 |
| VCR |
90 |
| Ceiling Fan |
82 |
| Printer |
74 |
| Alarm Clock |
74 |
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| The world is running out of Internet addresses. No worries, however, because Internet
Protocol version 6 (IPv6) will solve that
problem by providing up to 2128 unique IP addresses. That is the equivalent
of roughly 2,000 addresses for every square meter on the Earth's surface. Question: If IPv6
replaces IPv4, what happened to IPv5? |
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