Writings from Justin Wilson
Monoprice has a good deal on a 10,000 mAh battery. This is great for conferences, road trips, a day at the beach, or anywhere you need to charge your phone or other small portable devices. Even includes free standard shipping.
https://www.monoprice.com/product?p_id=15120
A discussion which comes up over and over in the WISP space is grounding and proper installation of customer CPE. The folks at perfect-10 (https://www.perfect-10.tv/) were a vendor at #WISPAPALOOZA2018. One of the best things I have seen them in a long time is the below photo they created. This is a great illustration of how a proper CPE goes.
As Internet traffic grows and becomes more dynamic, optical transport networks for sub-sea, terrestrial long haul and metro need more capacity. The ability to deploy capacity quickly is equally important to handle the increasingly dynamic nature of the traffic. The concept of a multi-haul transport platform, as introduced by Andrew Schmitt of Cignal AI, becomes very appealing for achieving this ability to scale with speed while maintaining operational simplicity – a single platform for all requirements. A critical element of the multi-haul optical platform is the flexibility of the coherent optics to be tuned to fine granularity in order to meet the reach-capacity target of any given network.
https://ciscocentral.blogspot.com/2019/02/cisco-and-verizon-to-demonstrate.html
From Wikipedia https://en.wikipedia.org/wiki/Virtual_routing_and_forwarding
virtual routing and forwarding (VRF) is a technology that allows multiple instances of a routing table to co-exist within the same router at the same time. One or more logical or physical interfaces may have a VRF and these VRFs do not share routes therefore the packets are only forwarded between interfaces on the same VRF
If you are looking for a U.S. stocking distributor of ALG products check out ISP Supplies
https://www.ispsupplies.com/search?keywords=alg&order=relevance:asc
The following are results from a series of tests of AGLcom’s parabolic dish antennas on an existing link that is 5.7 miles long. The link typically passes 80-90Mbs with a TX capacity of 140 Mbs and radios used are Ubiquiti AF5X operating at 5218 Mhz. A full PDF with better Readability can be downloaded here..
The tests were taken in stages:
The tables below do not follow the test order as the third line of data was actually the last test performed.
Antennas:
A-Jirous JRC-29EX MIMO
B-Jirous JRC-29EX MIMO C-AGLcom – PS-6100-30-06-DP D-AGLcom – PS-6100-29-06-DP-UHP
Results:
Table 1 is the signal strength results of the various dishes on the link. The first line, A-B, is the original Jirous to Jirous. A is the first two columns of the link and are the A side and the last two columns are the B side on the link. What is of interest is that exchanging B to C in the second line brought the signal deviation between the channels to only 1db and 0 db as seen in Table 2. The third line was a result of replacing the horn on the A dish and optimizing the setting on the AF5X radios. This changed the signal by around 7db and improved the link capacity, Table 3. Clearly, the A dish had a problem with the original horn.
In the fourth line, D-B, the signal strength improved as well at the signal deviation on the two channels, Table 2 first two columns. This link was not optimized. The fifth line, D-C is both AGLcom dishes which improved the bandwidth, Table 3, and the signal deviations, Table 2. The final line, D-C, was the previous line optimized. The signal strengths moved closer together and the bandwidth improved.
Link Ch0 Ch1 Ch0 Ch1
A*-C -64 -66
D*-C -60 -60
-70 -74 -71 -71 -65 -66 -59 -59 -58 -58 -61 -61
Signal Strength (* optimized data) Table 1
Table 2 has four data columns, the first two being the measured results and the latter two being the measured difference from theory. The Jirous and AF5X calculators were used for the theory signals. Clearly the signal approached the theoritical limit with the optimization and with the change of dishes. The optimization improved the signal by ~9db for the link that we replaced the horn on the Jirous and by ~2db for the AGLcom link.
Link dSig dSig A-B 3 4 A-C 1 0 A*-C 2 1 D-B -1 0 D-C 0 0 D*-C 0 0
dSig dSig -16.5 -17.4 -17.0 -15.0 -8.0 -9.0 -13.3 -5.3 -7.0 -4.3 -5.0 -6.0
Signal strength variation from theory Table 2
The band width improvement was more obvious, Table 3, from 22 Mbs to 39 Mbs for the RX and 144 Mbs to 141 Mbs TX for the link with the horn replacement. The bandwidth improvement for the optimization of the AGLcom link was from 61Mbs to 66Mbs RX and from 211Mbs to 267Mbs for TX.
The bandwidth improvement from the original, optimized link to the AGLcom link is from 61Mbs RX to 67Mbs and from 210Mbs TX to 267Mbs. There is a clear improvement for the AGLcom link over the Jirous link.
Link BW-RX
A*-C 60.9
D*-C 66.6
BW-TX 144.6 141.4 210.0 211.0 215.0 267.6
Table 3
Conclusions:
The data supports a measurable improvement in both signal strength and bandwidth with the use of the AGLcom dishes. However, it is difficult to quantify the improvement. The Jirous dishes were identical whereas the AGLcom dishes were not. One of the jirous dishes was under performing initially but was repaired for the last tests. Additional testing is needed to provide accurate data analysis and performance comparison. The best performance tests would involve identical AGLcom dishes, ideally two links, one each of both types of dishes.
I recently was able to get a pair of Skullerz Loki glasses from Tower One inc. You can pick up your own pair at https://toweroneinc.com/collections/clothing/products/skullerz-loki-safety-glasses-goggles
So why are these cool? First of all they are a google style. A good friend of mine Michael Pelsor figures out a few years ago if you keep your eyeballs warm in the winter your whole body thinks it’s warmer than it really is. These glasses fit around your eyes like a ski google, without the bulk.
Secondly, these glasses have a headband you can swap out the temple pieces with a stretchable headband so they stay on your head.
POE checker and cable tester. Review coming soon.
FLIR one is a lightweight accessory that transforms your Android device into a powerful thermal infrared camera. FLIR one displays live thermal infrared imagery using the FLIR one app so you can see the world From a thermal perspective. FLIR one allows you to measure temperature variances.
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