Powershell - Using IE

Have successfully using Powershell to access IE. Trick to be aware of.
If you launch a web page using "New-Object -comObject InternetExplorer.Application", UAC will block you from accessing the document properties inside. Use the following technique:

  & "$env:programfiles\Internet   Explorer\iexplore.exe" 'http://powershell.com'
  $win = New-Object -comObject Shell.Application
  $try = 0
  $ie2 = $null
  do {
    Start-Sleep -milliseconds 500
    $ie2 = @($win.windows() ? { $_.locationName -like '*PowerShell*' })[0]
    $try ++
    if ($try -gt 20) {
      Throw "Web Page cannot be opened."
    }
  } while ($ie2 -eq $null)
  $ie2.document
  $ie2.Document.body.innerHTML

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"Blinky" TDOA RDF Detector

Our local Amateur Radio club is building a Radio Direction Finding TDOA (Time Difference of Arrival) detector that has LED's to indicate the direction (Left or right) of the fox. Here are the build instructions. (Note: this project was originally presented by NZ1J. See his video: https://www.youtube.com/watch?v=mNqUKYkifOo&t=68s ) Here is the completed project: We start with the schematic: Note that you either install PIN Diode pairs s D3 and D2, or Diodes pair D1 and D4. The difference between these is the packaging. If you are ok with Surface mount, then install D1/D4. If you want discrete components use D3/D2. Next is the PCB. The PCB can be ordered using the GRBR files available from the author. The BOM for the electronic parts is as such: Doppler Direction Finder Bill of Materials 11/12/2021 Qty Part Digi-key Part Numbe...

Radio Direction Finding - TDOA

This article describes a few projects that I built from plans for Amateur Radio Fox Hunting. Basically, the hobby/sport is for someone to hide a few low power "Foxes", which are small transmitters that beep or send Morse Code, and then have a bunch of HAM's try to find them. The first project that I built was a Yagi Antenna (Directional receiver) and a 4MHZ Offset Attenuator. The attenuator is needed when you get close to the fox and you need to reduce the power of the received signal. I struggled with this setup because, on my first 2 fox hunts, there was too much reflection and multi-path interference. This causes false direction detection and if you are not mentally prepared for this, you want to throw all of your equipment into a garbage can and take up a different hobby. There are some truly strange individuals who find this frustration fun and enjoy making other people suffer, but I will leave that discussion for another day. Anyw...

Exchange DAG Failover Report - CollectOverMetrics.ps1

Below is my quick command that requires no customization to run on any installation: Get-DatabaseAvailabilityGroup |%{ .\CollectOverMetrics.ps1 -DatabaseAvailabilityGroup "$($_.name)" -StartTime ((get-date).AddDays(-365)) -EndTime ((get-date)) -MergeCSVFiles} Note that this script is located in the "Scripts" directory of your Exchange v15 installation.

Pat Spencer

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