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About RF Cafe

Kirt Blattenberger - RF Cafe Webmaster

Copyright: 1996 - 2024
    Kirt Blattenberger,


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.

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U.S. Visa Resources

We are getting a lot of conflicting numbers these days regarding the visa issue for working in the United States. The numbers presents below for FY 2007 come directly from the source (assuming, of course, that you have faith in government-supplied figures). Emotions are mixed on whether whether permitting a large number of temporary work and educational visas is a good idea because, according to some, it displaces American workers and compresses wages. Maybe it is because I have not been directly impacted, but I think bringing high tech talent into the country is a good thing unless the privilege is abused (which I'm sure it is to some extent). Keeping a close watch on those who are granted permission to enter is an absolute necessity, though, due to national security issues.

U.S. Visa Allocations
Fiscal Year 2007
Type Quantity
H-1B 58,200
H-1B* 20,000
H-1B1 6,800
H-2B 66,000
H-3 50
E-3 10,500
F-1, F-4, L-1
H-1B: Professional workers
    *: Advanced degree exemption
H-1B1: Special for Chile & Singapore
H-2B: Special for meeting peak loads, seasonal &
         intermittent needs
H-3: Non-immigrant receiving training
E-3: Special for Australian workers
F-1: Practical training
F-4: STEM grad students
L-1: Multinational company
       temp assignments
Get it Right from the Source
U.S. Department of Labor
U.S. Citizenship & Immigrations Services


Electronic Visa Application Forms | evisaforms.state.gov
Forms available on this site can be filled out on-line and assist in the processing of your application.

Employment Based Visas | travel.state.gov/visa/immigrants/types/types_1323.html
Information from the US Department of State.

Employment-Based Visas | immigration.findlaw.com/immigration/immigration-green-card/immigration-green-card-employment-top.html
Information from FindLaw.

Employment-based Visas: Comparison Chart | isss.umn.edu/H1BEmployment/visaCompar.html
From the University of Minnesota, adapted from NAFSA's "Filing Academic H-1B Petitions Participant Manual" and U. of Michigan Int'l Center Chart.

Frosty US Visa Policy Leaves Indian Science Cold | nature.com/nature/journal/v439/n7079/full/439901a.html
From Nature.com, by K. S. Jayaraman.

H1B Visa information | nriol.com/welcome2america/employment-visa.asp
From Welcome2America.

Immigration News | visapro.com/Immigration-News/News-Archive.asp
Changes in immigration that impact your life, from VisaPro.

Including South Korea in the U.S. Visa Waiver Program | heritage.org/Research/AsiaandthePacific/bg1872.cfm
From The Heritage Foundation, by Balbina Y. Hwang.

International Visitors Office (IVO) | nationalacademies.org/visas
Resource on visa-related issues for the National Academies, Academy members, and the scientific community.

Most See Visa Program as Severely Flawed | washingtonpost.com/wp-dyn/content/article/2006/03/30/AR2006033001968.html?sub=AR
From the Washington Post, by S. Mitra Kalita.

Online Database of American Employers for International Professionals | h1visajobs.com
Contains thousands of American firms, all over the US, in all disciplines, known open, willing, needed to, and actually offered H-1B jobs to international professionals.

United States Visas | en.wikipedia.org/wiki/Valid_U.S._Visa
From Wikipedia, the free encyclopedia.

US Visa Difficulties Are Lessening, but More Must Be Done | phy.cuhk.edu.hk/gee/pachem05/visadvice.pdf
Article by Amy Flatten, in Physicstoday.org.

U.S. Visa Information | educationusa.state.gov/usvisa.htm
U.S. Visa and Immigration-Related Information from Bureau of Educational and Cultural Affairs, U.S. Department of State.

United States Visas | travel.state.gov/visa/visa_1750.html
The official source of information about U.S. visa policy and procedures.

Visa Appointment Reservation System | nvars.com
A system for booking non-immigrant visa interviews.

Visas that Should Have Been Denied | nationalreview.com/mowbray/mowbray100902.asp
From National Review online, by John Mobray.

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