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Author Archives: jgerbs
Winding Your Own Inductor (From 1997 QST)
Building antenna tuners and amplifiers often requires you to roll your own inductor. This takes you through the steps. Wind your own Inductor
Posted in Amateur Radio / Ham Radio
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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 … Continue reading
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 … Continue reading
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 … Continue reading
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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 … Continue reading
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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 … Continue reading
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 … Continue reading
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 … Continue reading