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LCD & Relay module

คู่มือเซ็ต Mikrotik

คู่มือการเซ็ตค่า Mikrotik

MikroTik Manual

 

ที่มา: http://www.sa.mvc.ac.th/program/mikrotik/1.MikroTik%20Manual.pdf

พลังงานแม่เหล็ก

Perendev style Magnetic Motor “Free Energy Generator”

จำหน่ายแม่เหล็ก

 

แก้ปัญหา ssh refuse

  • http://askubuntu.com/questions/30080/how-to-solve-connection-refused-errors-in-ssh-connection
  • http://askubuntu.com/questions/607635/ssh-connection-refused-from-specific-location-only
  • http://www.linuxquestions.org/questions/linux-security-4/%5Bnew-bie%5D-sshd-refused-connect-from-192-168-x-x-125445/
  • http://www.snailbook.com/faq/libwrap-oops.auto.html
  • http://superuser.com/questions/977104/ssh-connect-to-host-localhost-port-22-connection-refused
  • https://www.centos.org/forums/viewtopic.php?t=29873

ทำสายอากาศ รวบรวมข้อมูล 14/1/59

  • http://www.oknation.net/blog/E22CTX/2009/03/13/entry-3
  • http://www.108ham.com/?id=198
  • http://www.feed-auto.com/bbu/antenna.htm
  • http://www.100watts.com/smf/index.php?topic=82771.0
  • http://www.e27ae.com/index.php?topic=1577.0
  • http://www.feed-auto.com/bbu/antenna.htm
  • http://www.utenwater.com/forums/index.php?topic=348.
  • http://www.gpsteawthai.com/index.php?topic=2589.0
  • http://www.hamsiam.com/smf/index.php?topic=97720.0
  • http://www.hs8jyx.com/html/vhf_uhf_matching.html
  • http://hs8jyx.blogspot.com/2015/05/yagi-2e-24-mhz.html

การเลี้ยงไส้เดือนดินในต่างประเทศ

 

Block การใช้ USB Storage บน Windows 8

Windows 8 Group Policy Disable USB Read / Write

Setting group policies in either the Computer, or User Configuration can prevent people from reading (or writing) to a USB device, or copying files to the USB stick.  Using a policy in the Computer Configuration section is simple and absolute.  While configuring ‘Removable disks: Deny read access’ in the User Section is more flexible, it leaves you open to permissions problems, or to be realistic, opening the door for administrators to remove data from machines.
Windows 8 Group Policy Removable Disks Deny read access

Computer Configuration
. Administrative Templates
… System
….. Removable Storage Access
……. Removable disks: Deny read access
(Enable)

Normally you would also Enable the ‘Deny execute access’, and ‘Deny write access’ next-door group policies.  As I mentioned earlier, you could also set the same policies in the User Configuration.

Note 3: To reverse this group policy I set Removable disks: Deny read access, back to ‘Not configured’ rather than setting it to: ‘Disable’

 

ที่มา: http://www.computerperformance.co.uk/win8/windows8-disable-usb-policy.htm

Open Stub Dual Band J-Pole Antenna

Open Stub Dual Band J-Pole AntennaPre tuned, easy to assemble , very use full for emergency communication

Specification:

Freq 144~146 MHz/ 430~440 MHz

Gain 3 dBi

SWR 1:1.5

Power 1kW max

Longest element: 58 Inch

Weight: 1.5 Kg

Available with camouflaged bag

Image

Image

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SWR VHF

Image

SWR UHF

Image

Image

 

ที่มา: http://forum.malabarradiosociety.in/viewtopic.php?t=19

อุปกรณ์น่าสนใจ Diplexers & Triplexers

smCFX-324Bsm26

Comet CFX-324B    $67.95

CFX-324B   Manufacturer NCG Comet Model # CFX-324B Product Description Triplexer Band Pass 1.3-150MHz 200-320MHz 390-500MHz Insertion Loss 0.2dB 0.25dB 0.3dB Maximum Power (Watts) 600w PEP 600w PEP 600w PEP Isolation 40dB Connectors Output: SO-239 Low…

วิทยุเครื่องเดียว ไปออก 3 สายอากาศ หรือกลับกัน

ที่มา: http://www.theantennafarm.com/catalog/duplexers-diplexers-triplexers-1175/diplexers-triplexers-477/triplexers-479/

Three-Element-Collinear-J-Pole

fullair_zps5a5f1fce fullground_zpsc00fd932 mid_zps23a90d25 midclose_zpsfaf23391 naked_zps8bd97eb8 naked2_zps7fda745f naked3_zpsf2b464d4 topclose_zpsd7bdeb95 topdetail_zpsb2f99e61

Feed Point
so239_zps4342535e so239coax_zps749d2176

Bandwidth กว้างมาก
144mhz_zps237f7068 146mhz_zps72dabf0c 148mhz_zps5203bd85

ที่มา: http://www.4x4ham.com/showthread.php?3019-Improved-2-Meter-Performance-with-a-Three-Element-Collinear-J-Pole

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