12/23/2011

ASUS RT-N16 Wireless-N Gigabit Router Review

ASUS RT-N16 Wireless-N Gigabit Router
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I have been looking for a router with decent range, speed, support for USB based external NTFS drives and last but not the least, good QoS support for VoIP phones. Another important thing that perhaps everyone wants but forgets to mention is reliability. I expect it to keep on working once it has been setup.
I have had this router for just couple of days so far and cannot comment on reliability yet, but other requirements have been met quite well. The specs were something to die for - 480MHz (capable of 533MHz) processor, 128MB RAM, 32MB ROM and runs Linux with support for bittorrent and FTP right in the firmware. Even the firmware source code is GPLed and anyone with a bit of knowledge in this area can improve it. In fact, DD-WRT (an open source Linux based firmware) is already available and works quite well with this router.
With DD-WRT installed on this router, it becomes quite a powerful computer that can serve as a web server as well as a NAS once you connect an external hard drive to the USB port. QoS and Port Forwarding have been implemented quite well in DD-WRT and is the main reason why I had to install DD-WRT within few hours of receiving the router.
[...]
I would have given the router a 4.5 rating if I could as the firmware it came with had a few bugs. I could never get port forwarding to work and also QoS setup in the original firmware is limited.
Here are some pros -
1. Gigabit ethernet, excellent processor and so the performance. Asus claims 300,000 concurrent sessions, which should be enough to handle even commercial hotspots with hundred users.
2. It has 2 USB ports that support various devices. One could connect a USB printer and a cheap external hard drive at the same time. The printer would work as a network printer (available to all computers in the network) and the USB hard drive will be available as Network Attached Storage to everyone without paying hundreds for one such device.
3. DD-WRT availability. They are constantly improving and adding features. QoS (Quality of Service) is one such feature that is needed in any household that has a VoIP phone and lot of online activity in the background like uploading videos to youtube, p2p, online gaming etc. With proper QoS setup phone service or online gaming shouldn't be affected even with other large scale online activity.
4. The original firmware is image based and looks quite nice. I found it very intuitive.
Cons -
1. Should have been dual band (separate bands for G and N traffic), the chipset supports it. I am running in mixed mode as several of my devices (iPhone, Fuze, Wii) support only G mode and in mixed G/N mode, N components operate predominantly at G speed.
2. The original firmware is buggy and I couldn't get port forwarding to work reliably after several tries. QoS, the main reason behind me upgrading from a D-Link, is not implemented as well as I expected. DD-WRT fixes both issues but first-time owners may not be savvy enough to reload a 3rd-party firmware on their brand new router.
All in all, it's an excellent purchase for the capability and price, especially when you consider Cisco charges more (sometimes twice) for routers with slower processors and much less RAM and flash memory.
Update: Updated the links since Amazon yanked them. Also would like to add that the reliability is quite good so far with DD-WRT. Has been running for 3 days straight and no issues/slowdown etc.

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ASUS RT-N16 - Multi-Functional Gigabit Wireless N Router with storage,printer and media server Powerful CPU provides a high-performance throughput - Support up to 300,000 sessions for extensive P2P clients.- Most widespread application with USB2.0 port : All-in-1 printer server and FTP files sharing - Ultra-fast and Convenient Downloads with the Revolutionary Download Master

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12/22/2011

USB to Serial RS-232 DB9 Adapter Cable Review

USB to Serial RS-232 DB9 Adapter Cable
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This adaptor is considerably cheaper than many on the market but works perfectly well. It appears robust and well made as well as simple to use.
I've not used any other adaptors so don't know if this is universally true but the thing that I liked most about this adaptor is how simple they've made the software that ships with the device. There is no fancy front end bloat ware, just a simple set of drivers on a CD.
Although, the installation is easy if you have a small ammount of knowledge about PCs, it wouldn't have hurt to put a note on the box for the benefit of less tech savy users of how to find the instructions. There are no paper instructions with the product but there are instructions hidden on the CD. Open it up in explorer and look in the directory with the same name as the product. The instructions are good and show how to install in straight forward pictures of exactly what to click on.
Using Windows XP, Just insert the CD, plug the adaptor into a USB port and wait for the 'found new hardware' wizard to start. All the settings are standard and your PC will know where to find the drivers. After you've installed it, you may need to know the COM number of your new port. You can open the hardware manager, that's in right-click 'My computer' - properties - Hardware - 'Device Manager'. Look in the 'ports' sub menu and you'll see the new port with it's COM number. Any software that connects to a serial device will need to know the COM number to work. The other way to find out is to just try ports 1,2,3,... untill the software for your PDA or whatever manages to connect. I know that sounds complicated but I've spelled it out in great detail, it's really fairly intuitive.
In short, before you junk that old programmable remote control or PDA because your new laptop doesn't have a serial port, use this, it's cheap and it works.

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Samsung SCH-R355c Charging USB 2.0 Data Cable This professional grade custom cable outperforms the original Review

Samsung SCH-R355c Charging USB 2.0 Data Cable This professional grade custom cable outperforms the original
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I used the cable for the first time yesterday, and loved it. it is well made, and it did what it was supposed to do. I have a Straight Talk R355C phone, and I am able to transfer files between my phone and my computer. Since my phone is a prepaid phone, I am not able to do more advanced functions. But guess what? I don't need or use advanced functions. I had a phone that had all of the bells and whistles, and never used it. All I did was give my hard earned money to AT&T.
If you just want to transfer files back and forth, this cable will work for you.

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12/21/2011

Channel Plus DA-520A 20 dB Bidirectional Cable Amplifier Review

Channel Plus DA-520A 20 dB Bidirectional Cable Amplifier
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I purchased the Channel Plus DA-520A 20dB signal booster in order to boost my cable signal due to significant (-19dBmV @ 700MHz) attenuation caused by a 6-way splitter at the ingress junction point of my house.
I found that this booster performs exactly as advertised. It brought my signal up to right around 0dBmV - the perfect level. However, I found that it also appeared to introduce a significant amount of noise; some RF-sensitive equipment I had in the vicinity of the device started showing signs of interference. I also found that my SNR dropped by 4dB (from 34dB to 30dB) when comparing the signal against a competing 15dB device. I am not certain whether this may have been due to my overdriving the line at the lower frequencies, but if so, an adjustable gain control would have been a handy and eminently useful addition.
So, in a nutshell, this device does exactly what it's supposed to: it boosts the input signal (and perhaps the input noise too). However, I found the device to emit more RF noise than a comparable 15dB booster, both on the wire and off it.

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Channel Vision C-0300 Return Path Amplifier w/Bracket Review

Channel Vision C-0300 Return Path Amplifier w/Bracket
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I was having trouble with my VOIP cable phone. People on the other end of the phone would complain about static and brake up. Even though my cable modem and TV were working fine, my signal was 58 dBmV which is outside of what is considered acceptable. After hooking up the Channel Vision C-0300 Return Path RF Amplifier the signal improved to 44 dBmV! I'll have to update this post to verify that my phone problem went away. After one day there have been no complaints so far.
Update: I have been using the Channel Vision C-0300 Return Path RF Amplifier for several weeks and it has fixed my VIOP issues. Hello cable phone, and goodbye Verizon. Snip snip. :)

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12/20/2011

Cables To Go 26374 Cat5E 350 MHz Assembled Patch Cable(1 Feet/0.30 Meters, Black ) Review

Cables To Go 26374 Cat5E 350 MHz Assembled Patch Cable(1 Feet/0.30 Meters, Black )
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used this cable to run from my router to my netgear switch, which I have my ROKU plugged into. I bought all of these here at Amazon: cable, switch, and the Roku.

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Classic Straight USB Cable for the Casio G'zOne Boulder with Power Hot Sync and Charge capabilities - uses Gomadic TipExchange Technology Review

Classic Straight USB Cable for the Casio G'zOne Boulder with Power Hot Sync and Charge capabilities - uses Gomadic TipExchange Technology
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This cable will not allow you to sync data between your PC and your g'zOne phone. There are no drivers or software, and no official or third-party drivers or software will function with the cable. Upon further research, I've discovered that Verizon purposefully obstructs the data protocol that normally allows files to be directly copied to the phone.
The cable will allow you to charge your phone directly from your PC if you download and use Verizon's official drivers; but otherwise has no function.

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