A 2.4GHz link is in the process of being aligned and tuned between Seymour Mountain and Nanaimo on Vancouver Island. The link distance is 77 km and link estimations have shown that it will be possible if tightly tuned.
The VINE radios at both ends have the extended frequency firmware modification added to them and may be used to avoid ISM noise.
Hardware
Seymour Mountain
- Eion Wireless VIP 110-24 2.4GHz 23dBm (200mW) Transceiver
- 30dBi Hyperlink Parabolic Grid Dish (V-Pol) aimed at Nanaimo
Nanaimo
- Eion Wireless VIP 110-24 2.4GHz 23dBm (200mW) Transceiver
- 24dBi Hyperlink Parabolic Grid Dish (V-Pol) aimed at Seymour
Performance
The vertically polarized noise in the 2.4GHz band has shown to be very destructive to our link attempts. This is a spectrum view of the spectrum as viewed from Seymour Mountain aimed at Nanaimo. Channels 5-35 are ISM.
18-Apr-2009 20:58
ve7rpt #> spectrum-analysis dwell-time-ms=1000
antenna: A
-30+
|
-40+
|
-50+
|,,,,',, ,,,, , ,','
-60+ '', , '' ,'
| ' '
-70+ , ' '
| '
-80+
| '''''', ,,''''',''
-90+ '' '
|---------+---------+---------+---------+---------+
0 10 20 30 40 50
RSSI (dBm) v.s. Channel NumberV-Pol 2.4GHz spectrum as viewed from Nanaimo site, aimed at Seymour:
18-Apr-2009 22:30
ve7dja #> spectrum-analysis dwell-time-ms=1000
antenna: A
-30+
|
-40+
|
-50+
|
-60+ ,,,'' '
| '
-70+
| , ,
-80+ ,', ' '',,,
|' ''' ''', ,,,',,,,,''', ,
-90+ ' '''''''''
|---------+---------+---------+---------+---------+
0 10 20 30 40 50
RSSI (dBm) v.s. Channel NumberWe are awaiting a move to horizontally polarized antennas on both end to lower the noise floor and gain back some much needed "dBs".
The link is currently mostly unusable as it floats +/- a few dBs from -92dBm. The receive sensitivity of the VINE is -89dBm.
2.1.0 Feature Keys
The only reference to the features enabled with the Feature Keys license upgrade was was the output of the command in the console, which is:
- Config File Usage
- Auto-script Usage
- Email Alerts
- DHCP
- VLAN
- Plug'n'Play
- Web Authentication
- Web Server