Building antenna tuners and amplifiers often requires you to roll your own inductor. This takes you through the steps. Wind your own Inductor
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Calculate the Impedance of a Length of Wire
This site has a calculator to determine the impedance of length of wire. Very helpful
http://www.chemandy.com/calculators/round-wire-impedance-calculator.htm
Posted in Amateur Radio / Ham Radio
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Computer ATX Power Supply to 12V 12 Amp
ATX power supplies are easy to convert to a 12 volt supply for a radio. ATX supplies typically provide 10 to 12 Amps output current.
To convert the supply take several of the yellow wires (12 Volt lines) and tie them together use at least 3 wires, more if desired.
Take at least 3 black wires (ground) and tie them together. Consider using a power pole for the 12V and ground line
Take 1 black and the green wire and tie that pair together and tape them off. Green is the switch wire.
Finally trim off the other wires and safely tape them off.
Now you have a small 12V 10-12 amp switching power supply for you radio equipment.
73,
Posted in Amateur Radio / Ham Radio
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Foritgate OSPF Over a VPN Tunnel
After working with Tech support, I found this useful article that could have saved me the support call.
Dynamic Routing Protocols OSPF over IPSEC VPNs
I can’t remember the site I found this info, but will post it at a later date.
Posted in Fortinet
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FSMO Roles in Active Directory (Flexible Master Operations)
This data in this PDF has bee copied from http://www.petri.co.il/fsmo-roles-in-server-2008-active-directory.htm.
This link is a cut and paste PDF form data at petri’s site, FSMO Roles
Posted in IT (Informatin Technology)
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Vender for RF Kits and Parts – Flying Pig Rig V2
Kits and Parts has all sorts of semiconductors and toroid’s. They also have rf kits that are useful for building a radios. A fairly new product is their 5 Watt CU Transceiver for $42, it is call “The Flying Pig Rig V2″.
http://kitsandparts.com/index.php
Posted in Amateur Radio / Ham Radio
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End Fed Antenns EARC FED 6-4
I found this end fed 6 – 40 meters and picked one up. I have saved the PDF on my site and you can view it here: Endfed6_40
Click here for the link to the club selling the antenna http://earchi.org/
Click here for the original link to the pdf
Posted in Amateur Radio / Ham Radio
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Fortigate IPSec Trouble Shooting
Here are the basic commands to trouble shoot IPSec on a Fortigate firewall.
Use diag debug en
Diag vpn ike filt
Diag debug app ike -1
Diag debug reset
SA is on phase 1 and phase 2 but typically refered to in phase 2
An SA is required for each direction
AH authentication header, is not encrypted and is not typically used (protocol 51)
ESP is nwo used most of the time (protcol 50)
For IT Support and InfoSec services see, www.quanexus.com
Printing from a Web Page
There is a lot of useful information on the web, but sometimes it is difficult to print what you want without having to print a lot of useless information. This is a great free utility to let you choose what to print.
http://www.printwhatyoulike.com/
For information on IT Services provided by Quanexus, please visit, www.quanexus.com
Working different versions of Windows servers and workstations, I find running these Control Panel commands from the Start button very helpful in saving time versus navigating the GUI.
Control Panel Tool Command
Add New Hardware sysdm.cpl
Network Properties ncpa.cpl
Internet Properties inetcpl.cpl
System Propoerties sysdm.cpl
Printers printers
For more information about networking, information technology and information security, please go to www.quanexus.com