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Point to Point link

R

reicherb

Platinum Member
Let me first say that I appreciate any help offered in this thread. I'm a wireless newbie.

I posted a while back but have done some more research and am getting close to making a purchase so I thought I'd post again.

I'm looking to setup a PTP connection between 2 locations approximately .25 miles apart. I'd be mounting one of the antennas on a mast to achieve line of sight.

I'd like a 10+Mb connection and some level of security. The traffic isn't top secret info but some personal info will be transmitted. The link will essentially be used to create an offsite data backup and to allow me to remotely manage the network on the other end.

I've selected the WVR54G Linksys Wireless-G VPN Broadband Router. It's only WEP enabled but since it supports VPN I'm assuming that makes it pretty secure. Is this a good choice?

I'm going to use 2 lightning arrestors. One Cat5 and 1 Coax. Do they look sufficient?
HyperGain® Model HGLN-CAT6
"Ethernet Connectors (2) RJ45 Jack
Data Lines Pair 1: Pins 1 and 2
Pair 2: Pins 3 and 6
Pair 3: Pins 4 and 5
Pair 4: Pins 7 and 8
Clamping Voltage 35 Volts
Continuous Operating Voltage 15 Volts"

HyperGain® Model AL-NFNFB
"Frequency Range 0 - 3 GHz
Protector Complies With IEC / IEEE Standard
VSWR 1:1.3 Max (0 - 3 GHz)
Insertion Loss 0.4 dB Max (0 - 3GHz)
Impedance 50 Ohm
Standard Gas Tube Element:
DC Breakdown Voltage Indicated 90 V ± 20%
Available Gas Tube Elements:
DC Breakdown Voltages Indicated 230 V ± 20%
350 V ± 20%
600 V ± 20%
Gas Tube Impulse Breakdown Voltage 1000 V ± 20%
Gas Tube Insulation Resistance 10,000 MO
Maximum Withstand Current 5 KA "

I've got no clue what to choose for an antenna. Here are the choices I'm looking at. They all from Hyperlink Technologies. They are all in the same ballpark pricewise.
HyperGain® HG2418P
"Frequency 2400-2500 MHz
Gain 18 dBi
Horizontal Beam Width 22°
Vertical Beam Width 17°
Polarization Vertical or Horizontal
Front to Back Ratio >25 dB
Cross Polarization Rejection >25 dB
Impedance 50 Ohm
Max. Input Power 50 Watts
VSWR < 1.5:1 avg.
Lightning Protection DC Ground
Connector Integral N-Female"

HyperGain® HG2414D
"Frequency 2400-2500 MHz
Gain 14 dBi
Horizontal Beam Width 25 degrees
Vertical Beam Width 25 degrees
Front to Back Ratio >30dB
Impedance 50 Ohm
VSWR < 1.5:1 avg.
Maximum Input Power 50 Watts "

HG2419G
"Frequency 2400-2500 MHz
Gain 19 dBi
Horizontal Beam Width 12°
Vertical Beam Width 16°
Polarization Horizontal or Vertical
Front to Back Ratio 25 dB
Impedance 50 Ohm
Max. Input Power 100 Watts
VSWR < 1.5:1 avg. "

HG2414P-NF
"Frequency 2400-2500 MHz
Gain 14 dBi
Horizontal Beam Width 30 degrees
Vertical Beam Width 30 degrees
Impedance 50 Ohm
VSWR < 1.5:1 avg.
Lightning Protection DC Short"

HG2416P
"Frequency 2400-2500 MHz
Gain ( dBi ) 15.5 dBi
Polarization Vertical or Horizontal
Polarization Isolation >30 dBi
Sidelobe Suppression >18 dBi
-3 dBi Beamwidth 25° Vertical : 25° Horizontal
-10 dBi Beamwidth 45° Vertical : 45° Horizontal
Front/Back Ratio >30 dBi
Impedance 50 Ohms
VSWR 1.5:1
Lightning Protection DC Short "


I'm also having a hard time finding mounting hardware for the antenna. I'm concerned about mounting them to the roof (leaks) so I'd like to mount them to the gable end of the houses but there is an 18"-24" roof over hang. Is there some kind of hardware that would extend out past the roofline that a mast could be attached to?


Questions:
1. Is the radio a good choice?
2. Should I feel secure with the security?
3. Is the lighting protection enough?
4. What antenna should I choose?
5. Do they make mounting hardware to get past the roof over hang?
6. Is there anything else I seem to be missing here?
 
It appears Winmax is still a bleeding edge technology. I don't even see anything on Linksys', Netgrear's, or Dlink's websites. Are the products even available yet?

Any other comments or suggestions about my installation? I could really use some help with the antenna selection.

Thanks.
 
I called and apparently their business has grown large enough that they are too busy to take orders or answer questions over the phone. I sent an E-mail.

Thanks.
 
Hmmm? I did not talk to them for a while, good for Them bad for Us.

BTW. What is the length of the coax that you are planning to use? If the coax is long you would lose the signal.

In most High elevated installations the AP goes near, or onto the Antenna mast put into a special protection box and using POE. As result the coax is short and the CAT5 goes down to the Network.

:sun:
 
I'm not exactly sure. Both locations are houses. I was planning on putting the antenna on the roofs (preferably without a mast/tower) and was originally planning on putting the radios in the basement. I would take some work but I might be able to locate them in a closet on the 2nd floor or possible the attic (that would probably require Power over Ethernet).

I had no idea there were so many antenna options and since there are so many variables they can't just say antenna A has a range of B.

Edit:
I'm really trying to do this as cost effective (cheap) as possible.
 
Take into consideration that the typical Coax used for 2.4GHz Wireless loses 4db per 10 feet

In other words (as an example) you install 8dbi Antenna and use 20? of coax and total gain is installation is Zero.

:sun:

 
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