Useful Thoughts and Actions Taken

RF over Fiber

RF over fiber is where you modulate an RF signal onto the light beam and thus transmit it at a lower loss over a long distance.  It is an analog usage as opposed to a digital one as used in data transmission such as an ethernet extender. I have found some equipment for doing this but have not yet found anything that appears it will do the full Internet + Cable TV solution to extend the pole to internet modem solution that is cheap enough to use.

Research Links

Conclusions

For now this is not a viable solution to the house in the forest long internet cable extension problem.  It will probably get there soon though.

By Fudgy McFarlen, ago

Extending Ethernet Long Distances using Fiber Optic Media Converters

Research Links

 

The MC111CS and MC112CS are complimentary in that the Tx wavelength is the Rx wavelength of the other.  See excerpt below.

The MC112CS is a media converter designed to convert 100BASE-FX fiber to 100Base-TX copper media or vice versa. Adopting WDM technology, MC112CS takes only one fiber cable to transmit and receive data, which will save half cabling cost for you. Designed under IEEE 802.3u 10/100Base-TX and 100Base-FX standards, the MC112CS is designed for use with single-mode fiber cable utilizing the SC-Type connector. The MC112CS supports longwave (LX) laser specification at a full wire speed forwarding rate. It works at 1310nm on transferring data and at 1550nm on receiving data. So the other end device to cooperate with the MC112CS should work at 1550nm on transferring data and at 1310nm on receiving data. Another TP-LINK?s media converter MC111CS is just one of the examples to cooperate with MC112CS.

What are Media Converters

MC111CS & MC112CS Fiber optic media converter link

  • I tested this setup with a 120 foot long patch cord.  It worked.  

The parts inside the box

By Fudgy McFarlen, ago

Fiber Optic Power Budget Estimation

Research Links

Fiber Type Wavelength Fiber Attenuation /km (1) Fiber Attenuation per km (2) Connector Loss Splice Loss
Multimode 50/125um 850nm 3.5 dB 2.5 dB 0.75 dB 0.1 dB
1300nm 1.5 dB 0.8 dB 0.75 dB 0.1 dB
Multimode 62.5/125um 850nm 3.5 dB 3.0 dB 0.75 dB 0.1 dB
1300nm 1.5 dB 0.7 dB 0.75 dB 0.1 dB
Single Mode 9um 1310nm 0.4 dB 0.35 dB 0.75 dB 0.1 dB
Single Mode 9m 1550nm 0.3 dB 0.22 dB 0.75 dB 0.1 dB

 

 

 

 

 

 

 

 

Note: (Fiber Attenuation /km in above table)
1. These values are per TIA/EIA and other industry specifications
2. These values are one example of the performance that can be obtained with a new fiber installation

By Fudgy McFarlen, ago

Light Weight Travel Monitor: LG E2442TC 24″ Class Slim LED Backlit Monitor – 1920 x 1080

Note that this monitor only weights 6lbs without the stand.  Available at Frys electronics

Specifications

Display
3D Ready    No
Screen Size    24"
Screen Coating    Anti-Glare
3H
LED Backlight    Yes
Widescreen    Yes
Aspect Ratio    16:9
Viewing Angles    170 horizontal / 160 vertical viewing angles
Maximum Resolution    1920 x 1080
Response Time    5ms
Brightness    200 cd/m2
Dynamic Contrast Ratio    5,000,000:1
Features
Touch Screen    No
HDCP Support    No
TV Tuner    No
Built-in Speakers    No
Built-in Webcam    No
Stand Adjustment    Tilt
Connectivity
VGA 15-pin    1
DVI    1
Power
Voltage Required    AC 100/240V
Power Consumption Operational (Standby)    23 Watts (0.3 Watts)
Physical Specifications
Dimensions (WxDxH)    22.3" x 7.1" x 16.5" (With Stand); 22.3" x 2.2" x 13.5" (Without Stand)
Weight    6.5 lbs. (With Stand); 6 lbs. (Without Stand)
Wall Mount    100mm x 100mm
Package Contents
What's in the Box    Monitor, Power Cord, VGA Cable
Manufacturer Warranty
Warranty    1 Year Limited Warranty

AMOI: Light Weight LCD Monitors

By Fudgy McFarlen, ago