PTP Backhaul Complete link kit #1

I have been asked a few times on what I would pick for a PTP link. here is what I would recommend as option #1.  You can use the RF Elements link planner to judge how far you can go. If you want to dive deeper you can use the Cambium LinkPlanner, which is a download. This is an unlicensed 5GH link. if you want some real-world data on this link you can visit https://blog.j2sw.com/xisp/the-addition-of-rf-elements-horns-to-a-ptp550-link/

2x Cambium PTP 550
https://www.ispsupplies.com/Cambium-Networks-C050055H001A
PTP 550 Data Sheet

 

 

 

2x RF Elements Ultrahorn
https://www.ispsupplies.com/RF-Elements-UH-CC-5-24
Ultrahorn Data Sheet

 

 

4x LMR Jumpers
https://www.ispsupplies.com/NM-NM-L4-36

 

 

 

8x Cold Shrink
https://www.ispsupplies.com/COLDSHRINK-12MDN

 

 

There are several other distributors to buy from as well. I choose ISP supplies because they refer business to me and do not have a consulting program that competes with my services.

 

Water tower install with mounting frame

We recently headed up a job for a client of installing some RF elements horns, Cambium ePMP, and Baicells LTE for a client.  One of the gems of this job was the frame the client designed for the job.  We can’t take credit for this. We just think it’s cool. Some of these pictures were taken during construction, thus post clean-up.

The frame is truly an example of how WISPs are stepping up their installs to become more standardized and carrier-grade. It costs some money but is worth it in the end.

 

The addition of RF elements horns to a PTP550 link

Originally posted at:
http://www.mtin.net/blog/the-addition-of-rf-elements-horns-to-a-ptp550-link/

In a previous series of articles we talked about a new Cambium 550 link and the noise challenges we had.  You can start your reading in Part one and Part two.

Due to the frequency challenges, we decided to upgrade the dishes to RF Elements Ultra Horns.

If you recall our spectrum looked like this before.

After the horns. While not a night and day difference you will notice several improvements across the band.  Less red and yellow on the scan and sharper drop-offs. We saw the most improvement in the 5160 area and the 5720 ranges.  And this is with the horns pointed right at the source of most of the 5GHZ noise.   Not much you can do if you are pointed right at the noise.

What did this mean for the link? It meant we were able to find a 200 meg increase because we were able to obtain better modulation on the link.

So while we were not able to filter out all of the noise we wanted, we were able to increase our MCS rates on a very noisy link to increase bandwidth and increase the reliability of the link.  Before the horns, the MCS rates would be in a constant state of flux dealing with noise.

PTp550 Throughput with RF elements horns

Distance:5.03 Miles
Downlink RSSI: -59
ChannelWidth: 40MHZ
DownlinkSNR:33bB
Antennas: RF elements Ultra Horns
Downlink Ratio set to 75/25

Question: Why are you not using channel bonding? 
A)Having some reliability issues with channel bonding at the moment on the 550 platform.

Question: What was the link like before the horns?
Check out this previous post. (pictures are screwed up for now): http://www.mtin.net/blog/the-addition-of-rf-elements-horns-to-a-ptp550-link/

 

 

PodCast: Mum 2019 chat with JJ & Eric

Sat down With JJ Mcgrath and Eric Sooter at the Mikrotik User meeting in Autin for a little “routerside chat” about the WISP industry. #routinglight #routingrf #bendingpackets #podcast