Ken,
There are a number of ways to go. A 1/2 wavelegth dipole can be built on
2-layer FR-4 PCB incorporating a 90-degree 60 ohm balanced line for
matching. Suitable ferrites are then slipped over the approximately 5 cm
line to perform the balun function.
Another approach is to build the dipole
Experts,
I need to build/buy a 1.9 GHz PCS band dipole receive antenna. Haven't
found anything to buy. What is a suitable material and balun design to go
from 72 Ohm balanced to 50 Ohm coax? Could I use an old T3 balun (400 -
1000 MHz tunable dipole) and just modify the elements? I will need
Certification is not the issue, and no competent s/w engineer would
consider any common Linux distro as a Fail-Safe component.
The issue is the ability to have absolute control (compile/link/image
locate/config management/version control) for 100% of the source code.
Unless you work for a Fortune
The review process of the three major standards for the China RoHS has been
completed. These three standards are going to be promulgated. They are:
Marking for the Control of Pollution Caused by Electronic Information
Products (电子信息产品污染控制标识要求 )
Requirements for Concentration Limits for
Hello Anders,
In the United States, the provider of telephone service needs to maintain
service to the structure. However, the telephone service provider is only
responsible for that connection. Wiring, telephones and communication
within the structure is the responsibility of the occupant.
Dear Experts,
For a appliction with voice over Wi-Fi, are there any requirements that
emerency calling should be possible during power losses? I.e. battery back up
needed to make emergency call during power losses.
If there are a need for battery back up:
If there are severeal Access points at
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