Barry wrote:
On Sun, 19 Jun 2011 12:53:24 -0700, "Bill Graham"
wrote:
radioguy wrote:
. The law even specificIf federal law overrules state law as most
posters in these newsgroups say, then why is the California state
law outlawing transmitting on frequencies your fcc license says
you can overruling federal
law.
If federal law overrules state law as most posters in these
newsgroups say, then why is the Delaware state law outlawing
transmitting on frequencies the FCC says you can overruling federal
law
more info
at
http://www.wgmd.com/?p=6432
Watts are important here. If you are talking 100 milliwatts or less,
then you can transmit pretty near anywhere and at pretty near any
frequency. These are the levels of garage door openers and cordless
phones.
Garage door openers probably operate at less than 1 milliwatt and
cordless phones at a few milliwatts.
I can receive my 20 mw 434 Mhz walkie talkie several kilometres
away.
They are only good for 100 yards or less.
Or several kilometres.
But most lawmakers can't tell a watt from a
volt or an amp. They are technical minus people, or they would get a
real job and actually contribute to the society instead of
parasiting off of it.
You have a strange idea of power levels.
Copi8ed from the internet:
Technical properties
Some DECT properties:[citation needed]
a.. Audio codec: G.726, G.711, G.722 (wideband), G.729.1 (wideband) and
MPEG-4 ER LD AAC (wideband and super-wideband)
b.. Net bit rate: 32 kbit/s
c.. Frequency: 1880 MHz-1900 MHz in Europe, 1900 MHz-1920 MHz in
China,?1893 MHz-1906 MHz in Japan, 1910 MHz-1930 MHz in Latin America and
1920 MHz-1930 MHz in the US and Canada, US DECT and DECT 6 products may NOT
be used in the UK as they cause and suffer interference to the UK 3G
cellular networks with unlicensed use of such products being prohibited by
UK agencies. As DECT and DECT 6.0 do not operate in the 2.4 GHz ISM band,
they are not subject to the interference arising in this band from its use
by 802.11b and 802.11g WiFi, and 2.4 GHz cordless phones.
d.. Carriers: 10 (1,728 kHz spacing) in Europe, 5 (1,728 kHz spacing) in
the US
e.. Time slots: 2 x 12 (up and down stream)
f.. Channel allocation: dynamic
g.. Average transmission power: 10 mW (250 mW peak) in Europe, 4 mW (100
mW peak) in the US
I was talking about the maximum power allowed by law for such devices, and
not the minimum that some cleaver manufacturers have been able to achieve. A
lot depends on the frequency and the available antenna swystem.