Copyright: 1996 - 2024
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 tying up your telephone line, and a nice lady's voice announced "You've Got
Mail" when a new message arrived...
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subject: healthy - RF Cafe Forums
RF Cafe Forums closed its virtual doors in 2012 mainly due to other social media
platforms dominating public commenting venues. RF Cafe Forums began sometime around
August of 2003 and was quite well-attended for many years. By 2010, Facebook and
Twitter were overwhelmingly dominating online personal interaction, and RF Cafe
Forums activity dropped off precipitously. If the folks at
phpBB would release a version with integrated
sign-in from the major social media platforms, I would resurrect the RF Cafe Forums,
but until then it is probably not worth the effort. Regardless, there are still
lots of great posts in the archive that ware worth looking at.
Below are the old forum threads, including responses to the original posts.
|-- Amateur Radio
Gripes & Humor
-- CAE, CAD, &
Test & Measurement
Post subject: healthy
Unread postPosted: Tue Jun 28, 2005
Currenty, i am doing RF transistor
measurement at 200MHz till 5.8GHz. is this measurement is an harmful
measurement to my body. if yes, any precaution that i can carry out?
Thanks for advise
Unread postPosted: Tue Jun 28, 2005 3:55 am
It all depends on the power level that you are transmitting. If
you transmit power level higher than 1W (+30dBm), then you should take
care for protection. You should put your circuit/module in a metal enclosure
that will prevent RF radiation. The RF input/output to your system,
should be wall-mount RF connectors and for the supply you should use
Assure that the cables are 50-ohm high-quality
cables, and that they are short as possible. Fasten the connectors to
the walls of the enclosure and fasten the cables to the connectors.
You can ask from a safety specialist to measure the radiation levels
near the enclosure and see if these meet the required safety standard.
Hope this helps,