Showing posts with label hawking. Show all posts
Showing posts with label hawking. Show all posts

Sunday, July 15, 2012

Hawking HiGain Directional Antenna, mini indoor, 7dBi - HAI7MD Review

Hawking HiGain Directional Antenna, mini indoor, 7dBi - HAI7MD
Average Reviews:

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This mini indoor antenna does provide a boost over the standard 2dbi antenna that you receive from any typical router however this device is smaller than I had expected (seems to be only about 5-6 inches high). Further, upon installing the antenna on the back of my D-Link router, the connector on this Hawking antenna snapped off apparently due to a poor soldering job by Hawking. Luckily, the damage doesn't seem to be permanent and the antenna seems to be working despite the poor soldering.
Signal-wise, I was able to obtain about a 10% signal increase with a router on the second floor and a computer on the first floor with numerous walls in between. Not too shabby but for my purposes, I had to utilize a Hawking signal booster Hawking HiGain Signal Booster version 2 - HSB2 and a carefully-placed Trendnet antenna TRENDnet 14 dBi Outdoor High Gain Directional Antenna to achieve 100% signal (for comparison: without any enhancements, my D-Link DIR655 N Router can typically provide about 60% signal).

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Sunday, April 15, 2012

Hawking HWUN1A Hi-Gain Wireless-300N USB Adapter with Upgradable Antennas for Mac Users Review

Hawking HWUN1A Hi-Gain Wireless-300N USB Adapter with Upgradable Antennas for Mac Users
Average Reviews:

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I ordered this for use as backup to the built-in Airport in my MacPro. I ran into couple of problems with the unit after installing it: even though the signal was very strong, the unit got massive amount of collision errors causing the web pages to display very slow and sluggish. After a call to their support, I was referred to their Engineering support since Tech support can't help. After couple of email exchanges, I was sent a new driver for the unit. After installing this driver the collision errors went away but the web pages were still displayed very slow. The stats screen showed large number of retries. Engineering support suspected interference caused the problem and suggested to switch to another channel. After switching the wireless router to another channel, the retries went away and the unit works great since. Don't know why the Airport did not have this problem but since it now works great I'm happy with it.
I'd recommend this unit for anyone who needs a backup, or has a need to use an external antenna for extended range.

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Sunday, October 30, 2011

Hawking HiGain Directional Corner Antenna, indoor, 15dBi - HAI15SC Review

Hawking HiGain Directional Corner Antenna, indoor, 15dBi - HAI15SC
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This is a "deconstructive" review of Hawking's corner reflector. Basically I took it apart so you don't have to! BTW - I am an RF engineer, so I apologize if it gets too technical.
First let me provide a explanation of what a "corner reflector antenna" is. A corner reflector antenna is a very simple, but high gain type of antenna. It consists of a dipole antenna (a dipole is just a straight piece of wire cut in a precise way) and behind the dipole is an angled metal screen or plate which is called the reflector. The angle of the reflector is typically 90 degrees, which forms a corner and thus the name. The reflector focuses the signal so it is more concentrated, which results in higher gain versus a simple dipole.
Taking apart the corner reflector is straightforward, but it does take some time and muscle. I carefully but forcefully pulled on the gray plastic end caps. After some time, the end caps finally came off. This revealed an unlabeled, rather ordinary black "stick" antenna inside the white plastic pipe. It's probably a 5dBi collinear dipole. The antenna is connected to the coax cable via a panel mount SMA connector. I was able to remove this antenna, but it does take some torque because Hawking applied thread locking glue.
Based on it's construction, I have no reason to doubt the 15dbi gain claim. However, I seriously doubt the 90 degree vertical and horizontal beamwidths that the manual seems to claim. I guesstimate that 3dB beamwidths are in the order of 40 degrees horizontal and 30 degrees vertical, based on my experience with similar corner reflectors. This makes orientation MUCH more critical. If you are 15-20 degrees off, you could be losing half (3dB) of your signal! On the other hand, such a narrow beamwidth is a good thing if other people's AP's/client's are interfering. Any other transmitters outside of the main beam will be weakened, reducing your noise and improving signal quality.
Now to analyze the coax cable. The outer jacket is unlabeled white plastic, so you can't tell who made it or what type of cable it is. It's thin, about 1/8" thick . I cut off one end to see what's inside. The shielding is quite good. It's a dual shield, foil plus braid. The foil provides complete coverage. The braid is tin plated copper and has excellent coverage, probably 95%. The center conductor looks and cuts like pure solid copper, not copper clad steel. The center insulator (the dielectric) is a clear translucent, solid (not foam) plastic. When I soldered on an SMA pin, the dielectric easily melted! It's probably NOT teflon, but cheaper, higher loss polyethylene. Based on this, it's probably a RG-174 type cable, not the lower loss RG-316. Cables of this type generally have a loss of 0.6dB per foot at 2.4Ghz. The cable is 6 feet long , so you lose more than half (3.6dB) of your signal in the coax! Making a shorter cable and/or using better cable would help.
Considering how it's made, a lot of the negative reviews make sense. It's a 15dBi antenna, but you lose 3.6dBi in the cable so effectively it's only 11.4dBi. Plus if you don't point it within 15 to 20 degrees of your target (both horizontally AND vertically), you will lose even more signal. Used indoors, there is so much RF scatter that the actual direction of maximum signal can very often NOT be in the direction of the target due to signals being bounced around. You'll have to rotate the antenna in different directions vertically and horizontally to find the maximum signal. Used outdoors or in unobstructed area, just point it at the target and you're done. However, keep in mind that this IS NOT a weatherproof antenna, so don't leave out outside where the rain and sun will beat down on it.
Used properly, this antenna really shines. It provides a tremendous value for under $50. Antennas with similar gain will cost MUCH more.

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Increase Your Wireless Network Strength, Works with 2.4GHz 802.11b /g Wireless Standards, Extend your Network Range, Great for Large Conference Rooms or Open Spaces, East Installation (No Software Required).Main FeaturesManufacturer: Hawking Technologies, IncManufacturer Part Number: HAI15SCManufacturer Website Address: www.hawkingtech Product Type: High-Gain AntennaFrequency: 2.4 GHzGain: 15 dBiImpedance: 50 ohm NominalConnectors: 1 x Reverse SMAStandard Warranty: 1 Year(s)

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Tuesday, September 13, 2011

Hawking Hi-Speed 54M Wireless G Router (HWR54G) Review

Hawking Hi-Speed 54M Wireless G Router (HWR54G)
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I got this one as a replacement for a wireless D-Link DI-784 router that was glitchy and could not be programmed at all. And this was quite a change! While this router is not too sophisticated in terms of either available wireless security protocols or some other features, it has everything one needs to create a home network, and more.
Namely, compared to similar wireless routers from better known brands (DLink, NetGear, Linksys) this one:
1. Is PROGRAMMABLE. That is, it does not stop working or deos not develop glitshes when you change modes and parameters. (Many others present you with a whole spectrum of glitches when you start changing default settings.)
2. Supports any Internet connections, not only cable/DLS. You CAN use it with a leased line, you CAN connect it to another router with a static address, etc.
3. You CAN assign it a static IP address, and it works. (MOST others don't.)
4. It does support opening additional ports for your special applications (such as IP telephony - see below), and it works. (Many others don't do it properly.)
5. You can switch the DHCP feature off, and the router still works. (Many others don't.)
6. VPN pass-through works, and one can really connect to your work networks from home without glitches.
SUMMARY: I have successfully set the router up so that it currently supports 3 wired computers, 1 wireless, and a Vonage IP phone router. I couldn't do it with other routers from manufacturers mentioned above, because all of them were glitchy and actually could not work with static IP addresses and/or other routers and/or DHCP off, etc.
All wireless features work fine, and the speed/range are acceptable. One can use a long WEP key (26 Hexadecimal characters), and communication is fast and stable.
For those who are interested in configuring IP telephony: Vonage offers great phone plans, but it currently sends you a regular Linksys router of of its own with 3 RJ45 ports and 2 phone ports. So IF you have more than 3 computers and/or computers using wireless, you need to set up TWO routers to work together. And I succeeded in doing this with the Hawking one. Namely, I have connected the Hawking HWR54G to the cable modem, and it is the "primary" router with DHCP enabled. All 3 wired computers are connected to it as well as the wireless laptop.
The "secondary" Vonage router is connected to the primary one using a STATIC IP address (outside of the range used by DHCP). That way you can guarantee that it will always have the same address irrespective of the number of reboots. This configuration makes it possible to MAKE calls, but not receive them, because the system (primary router) doesn't know where to send incoming call data packets, and also blocks some of the ports by default (firewall function).
So I opened the IP telephony ports on the Hawking router and set up re-routing of these data packets to the Vonage Linksys router at its static IP address. Also, I had to open port ranges used by Vonage by adding these to the list of custom applications. Ports to be opened on the router/firewall:
69-69 (Vonage 1)
5060-5063 (Vonage 2)
10000-20000 (Vonage 3)
All three apps should be checked.
That way the phone works both ways, i.e. you can receive calls as well!
On the negative side, the only thing that I noticed was as follows: from time to time (once a day if you work intensively for the whole day) the router can "hang", and wireless networking stops working. As soon as you unplug it and then plug it in again, it reboots, and everything works fine. Nothing else is needed (no computer reboots). Generally speaking, this is quite a good result compared to some other models, and I can live with it. Recommended.


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Thursday, August 18, 2011

Hawking HiGain Omni Directional Outdoor 15dBi Antenna - HAO15SIP Review

Hawking HiGain Omni Directional Outdoor 15dBi Antenna - HAO15SIP
Average Reviews:

(More customer reviews)
Pricey but great build quality and mounting hardware. Does what it's supposed to. I've measured sizable signal increases throughout the network. I have it roof mounted which seems to be where these things work best. The only negative was that it comes with a lightning protector that is useless without buying another pricey cable. They could have simply included a short jumper to attach to outdoor radios. Hawking doesn't even sell a cable to do this under 10 feet long. You really only need about a foot if your radio is near the antenna.

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