Originally Posted by BobSalita
Two major discoveries.
Attached the HDHomeRun to my cables home run. I am able to reliably get most clear QAM channels. That is a major improvement. I suspect the devices QAM sensitivity is subpar but we need other experiences to confirm. I will compare sensitivity against my Divico HDTV USB device.
I attached the notebook to the device using Ethernet. This also made a major improvement. The digital sparkles went away.
With these two changes, the experience is much better.
There is still one non-HDHomeRun performance mystery to solve. Using wireless, sometimes I get a solid image, other times I get lots of breakup. I thought I solved the problem by reverting to a better wireless router, a Linksys WRT54GL. I immediately got a solid 5 bar signal everywhere. Now however, like my previous router, I can put my notebook on top of the router and only get 3 of 5 bars. I cannot figure out the drop in performance. I have used NetStumbler to confirm there is no channel or nearby interference. I can duplicate the results on identical notebooks and seemingly on identical routers. I have also tried high gain antennas. Maybe it is time to buy a WiSpy.
People don't realize how little of the advertised bandwidth people get with wireless technologies and how quickly the performance drops off with range/obstructions/and interference.
For example, I have a Netgear 108G which bonds two G channels together (advertised as 108Mb/sec). In my bedroom (~30f, 1 floor away), I'm lucky if I can get 1-2Mb/sec.
It was marginal streaming standard def.
I've actually just purchased a D-Link Xtreme N and am going to try it out. I suspect much better results.
In general, the D-Link Rangebooster & Xtreme N and the Belkin Pre-N have been reported to have much better range and much better bandwidth then previous wireless setups.
Keep in mind, they all require matching adapters (no mixing and matching) and for best results, you need to turn off older protocol compatibility.
Also, note that the HDHomerun is using UDP. UDP is a best effort protocol. It is nice that it has less overhead, but if packets are lost, it doesn't try to resend them. This would explain why you get picture impact when you have a less than optimal network connection.
I think when streaming of video over wireless you need to load the deck as much in your favor as possible. Get the best max-range N or pre-N router you can, matching N or pre-N card, and turn off backward compatibility.