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...
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:
Pathloss - 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: Pathloss
Unread post Posted: Fri Jan 28,
2005 3:09 am
How to Calculate Outdoor / Indoor Path Loss? Say
at 2.4GHz and 5.8GHz.
Also Like to Know Different Material
(Loss) Properties at 2.4GHz / 5.8GHz Band.
Unread postPosted: Wed Feb 09, 2005
Joined: Wed Feb 09, 2005 11:33
fudged free air path loss
PL = 20 log(f) + 20 log(d) - Gt - Gr - 27.6
f = frequency
d = distance in meters between Tx and Rx antennas
= gain of a isotropic receiving antenna
Gt, Gr = antenna gains of
the transmitter and receiver antennas.
Post subject: Path Loss
Wed Feb 09, 2005 10:23 pm
could you please me, exactly
what are your requirements and then i can help you.
path loss in an Urban outdoor environment, factory environment.....etc?
2: or you are considering path loss in the office or university
Post subject: Reply
Unread postPosted: Thu Feb 10,
2005 3:19 am
I need typical Apartment / Townhouse / House Environment
Require path loss through different construction materials.
Post subject: Path Loss
Unread postPosted: Thu Feb 10, 2005 12:15
send me an e-mail at :
i will send you the paper which contain all the required information.