MoCA Adapters

As a geek, I tend to have a lot of gadgets. This includes a nice cable distribution panel in my basement that makes the cable and satellite guys turn green when they think I need them to do anything on it.

I live in a newer house, but for some reason, Ethernet is not a standard feature of houses like cable outlets and phone jacks.

For the few years I've lived here, I've always wanted to be able to stream HD video to a Windows Media Center Extender up in my bedroom because I record a lot of shows on the Media Center. I use my Media Center to pull ATSC HD off the air. Anything on satellite is recorded on the Dish Network DVR.

A very handy feature of the Dish DVRs is the ability to modulate the second video output to a cable channel for viewing on a separate TV. Basically I can turn the TV in my bedroom to channel 63 (or whatever) and get the full DVR interface. However I was always out of luck when it came to the Media Center.

For a long time, the only extender that could play back HD content was the XBox 360, and I bought a second one just for this purpose. I quickly found out that 802.11g was not fast enough nor reliable enough to do this in my house (AP is in the basement, bedroom is on the second floor). There wasn't any good way to get high speed WIRED network up there.

I have been reading about Ethernet over Coax (aka MoCA) adapters for a few years, and they always seemed like they were about to release. I decided to stop waiting and picked up a couple of Actiontec HME2200 boxes off of Amazon.com.

WHY AREN'T THESE THINGS ON THE SHELF AT EVERY ELECTRONICS STORE?!?!?

I couldn't believe how EASY the install was. It took about a minute per end. Here's a basic layout.



Typical cable uses about the first 1000MHz of the frequencies available on a cable. However most RG6 or Quad Shield is rated to 2350MHz. This leaves quite a bit of bandwidth available for other things. The MoCA adapters put the Ethernet signal onto the unused bandwidth at one end, and pull it off at the other. It's basically a diplexer.

Now if I had an actual satellite tuner in my room (which I don't), I wouldn't be able to use this since it uses the additional bandwidth for that signal.

This has got to be one of the easiest and most useful network devices I have ever used. Powerline is basically worthless, but you can get it at any Best Buy. I'm looking forward to seeing these devices become more available and cheaper in the future.

FixMAPI

Clearly, keeping up on this blog hasn't been at the top of my to-do list. We've made some big changes at Artech, and business is booming at the moment, so I've been busier than ever.

This blog was originally going to be a collection of articles that I could spit out at my own pace, and then use in a newsletter format on a periodic basis to send to our clients. However most of my clients wouldn't really care to read any of this, so it's basically turned into a collection of fixes for which I couldn't find anything on Google when trying to fix an error myself.

A recent example of this came up when I migrated a client from GroupWise 6.5 to Exchange 2007 with Outlook 2007 on the client side. The vast majority of people could no longer use any mailto links or the "Send to" function of Explorer when choosing Mail Recipient. The only solutions people tended to talk about was to verify that you had Outlook selected as the default email program under Internet Explorer.

So if you are being prompted to "Choose Profile", and then nothing happens when trying to use any of these functions, check out the version of your mapi32.dll. There's a program that's been pushed out since IE5 called fixmapi.exe in your system32 directory, which makes a backup of the current MAPI DLL, and restores the correct version. Be careful, because this will break older versions of Outlook.

Hopefully this will help other people when looking for a solution to this issue.