It's much easier to construct a HD-SDI cable which is only one conductor and shield, maintains its 75 ohm impedance (impedance discontinuities cause signal reflections and inter-symbol interference), and has low loss (larger diameter and air or foam dielectric).
Install Cygwin, it will give you much of the features of eXceed for free, including an Xserver, a local xterm client to connect to your Linux box, and ssh.
It is true that there is only one pair of wires involved. Phones (Plain Old Telephone Services P.O.T.S) achieve full duplex with a simple analog circuit called a hybrid. Until the 1980's most phones had no active electronics in them. The hybrid was a specialized transformer which by arrangement of the coils' polarities, the much stronger sending signal is subtracted from the receiving signal in the handset. The subtraction is purposely designed not to be perfect so there is some 'sidetone' left over to give you feedback on how loud to talk.
In modern phones the hybrid is composed of a SLIC (subscriber line interface circuit), basically amplifiers which can do the subtraction operation. Outside of the phone, both sending and receiving signals share the same pair, just moving in opposite directions.
It sound like this research team just developed a similar hybrid circuit for RF.
I would like to give Phil Karn belated thanks for the KA9Q NOS software he developed over 10 years ago. This 'Network Operating System' enabled PC's to communicate over Amateur Radio packet networks using TCP/IP. His software greatly enhanced my enjoyment of packet radio, which at the time was mostly boring, simple BBS's.
His free software, which predated Linux, allowed me to run my simple 8080 and 486 like a Unix boxen. The KA9Q NOS made my transition to Linux simple and helped train me in a new career of software devlopment.
Phil Karn is definitely an expert in wireless networking (hardware and software). Check out his site or do a Google search for more information on his contributions to Amateur Radio, wireless technology, and the Internet. I bet some of his code ended up in the Linux kernel as well.
INAL but, doesn't the "Innocent uptil proven guilty" concept only apply to criminal cases. I think for civil cases, the burden of proof is the other way around.
Actually it is the opposite. Office/Industrial equipment with oscilators over 10 KHz must be FCC Class A Aproved. Residential equipment must be Class B Aproved, which is generally 10dB more strigent for most frequencies.
The theory being, residential environments have more radio and TV receivers than industial/office environments, and residences are typically closer together than factories and office buildings.
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It's much easier to construct a HD-SDI cable which is only one conductor and shield, maintains its 75 ohm impedance (impedance discontinuities cause signal reflections and inter-symbol interference), and has low loss (larger diameter and air or foam dielectric).
Install Cygwin, it will give you much of the features of eXceed for free, including an Xserver, a local xterm client to connect to your Linux box, and ssh.
Sorry, but it works nothing like you describe.
It is true that there is only one pair of wires involved. Phones (Plain Old Telephone Services P.O.T.S) achieve full duplex with a simple analog circuit called a hybrid. Until the 1980's most phones had no active electronics in them. The hybrid was a specialized transformer which by arrangement of the coils' polarities, the much stronger sending signal is subtracted from the receiving signal in the handset. The subtraction is purposely designed not to be perfect so there is some 'sidetone' left over to give you feedback on how loud to talk.
In modern phones the hybrid is composed of a SLIC (subscriber line interface circuit), basically amplifiers which can do the subtraction operation.
Outside of the phone, both sending and receiving signals share the same pair, just moving in opposite directions.
It sound like this research team just developed a similar hybrid circuit for RF.
I would like to give Phil Karn belated thanks for the KA9Q NOS software he developed over 10 years ago. This 'Network Operating System' enabled PC's to communicate over Amateur Radio packet networks using TCP/IP. His software greatly enhanced my enjoyment of packet radio, which at the time was mostly boring, simple BBS's.
His free software, which predated Linux, allowed me to run my simple 8080 and 486 like a Unix boxen. The KA9Q NOS made my transition to Linux simple and helped train me in a new career of software devlopment.
Phil Karn is definitely an expert in wireless networking (hardware and software). Check out his site or do a Google search for more information on his contributions to Amateur Radio, wireless technology, and the Internet. I bet some of his code ended up in the Linux kernel as well.
INAL but, doesn't the "Innocent uptil proven guilty" concept only apply to criminal cases. I think for civil cases, the burden of proof is the other way around.
Actually you don't need a magnent (really ferrite bar). An oatmeal cylindar box and wire will do.
Here are some links to some crystal radio pages:
http://www.freeweb.pdq.net/headst rong/foxhole.HTM The razorblade radio plans
http://www.midnightscience.com/
http://www.freeweb.pdq.net/headst rong/crystal.htm
http://www.thebest.net/wuggy/
http://home.earthlink.net/~drduggee/xt al.htm
Actually it is the opposite. Office/Industrial
equipment with oscilators over 10 KHz must be FCC Class A Aproved. Residential equipment must be Class B Aproved, which is generally 10dB more strigent for most frequencies.
The theory being, residential environments have more radio and TV receivers than industial/office environments, and residences are typically closer together than factories and office buildings.