I understand your points, but it is plainly said that there isnt a synced version on the horizon yet. So if enough of us squeal for one then it will happen else they will put R&D time elsewhere.
For a ptp link in this price/performance range, the AP side needs some fundamental features not just an SM that can act as an AP. GPS sync is a major feature that makes the epmp3000L even viable, so to say that one isnt planned IS a major issue as I can not put a $1000+ epmp4000 in an area that can not economically support it. This is the same reason that we didnt go epmp2000 and once the 3000L came out at half the price then we got one and a few force 300 SMs to try and test.
We are waiting to see but it is nice to know that yes one is in the works but not ready yet or to be told that it will not be happening. This is also the time to point out what they should be looking at for hardware features on possible variants. Eg internal gps=ok but not able to have a common sync source is with the onboard as a backup (epmp1000L style) was a poor decision.
The Force 400 is an attempt to fix the infamous result over the ubiquiti Airfiber
According to the test and reviews, Airfiber is a better device that has GPS sync.
It’s been around for a few years.
Of course with the Ubiquiti device the GPS works constantly while with the cambium you are never sure.
That is my opinion and I do not want to impose it on anyone.
Well, I have an AF5xHD and a Force400c link side by side, so I’ve compared them head to head. There are pros and cons to each of them. The Force300 wasn’t much of a threat to the AF5xHD, but the Force400 is MUCH faster.
Since Cambium discovered that the GPS problem wasn’t actually a GPS firmware problem (actually a bus/driver problem or something like that?). Since they found and fixed that, we haven’t had any ePMP GPS issues either. We are running 4.6 firmware and no GPS issues at all.
We have results of working Force 425 at 9 km link from fiber POP to village with 600+ residential users ( PON and Cambium ePMP access ) with real live commercial traffic.
Configuration
Latency at full traffic load
10.202.18.104 ping statistics — 30 packets transmitted, 30 received, 0% packet loss, time 29046ms
rtt min/avg/max/mdev = 2.633/4.950/10.429/1.751 ms
This is the same 9 km link at Force 425 at 40 MHz channel, Througput 450Mbps UL+DL live traffic
Awesome Vyacheslav. Those are good, real-world results. That’s similar to what we are seeing. Over 400 Mbit in 40Mhz widths, and over 800 Mbit in 80Mhz widths - with real-world customer data.
It is possible as there is an encoding scheme in between 256 and 1024. You dont hear of it too often but qam512 exists and is used just not as common.
The force 300 uses qam256 and has the ability to do 384Mbps, with some loss due to link overhead and protocols. If each coding scheme adds half again the bandwidth then qam1024 should do 896Mbps minus overhead and protocols.
Finding a clear enough 80Mhz channel is a feat in itself, just being able to have the same bandwidth with a 20Mhz channel is the important change. This increases your bits per Mhz and thus is more efficient and faster.
That depends. Currently the force 400 is not gps syncd so if you need that then the air fiber is “better” but if you want a homogeneous network the the force 400 is better.
This is a point of opinion and the truly better is measured after it is replaced with something else.
The problem is that as we increase QAM rates the capacity increase is less and less. Each doubling of QAM adds 1 more bit/Hz. Going from 64 to 256QAM increases from 6 to 8 bit/Hz. Going from 256 to 1024 goes from 8 to 10.
That link literally does better than my 5km link with 2 ptp 550 with 3ft dishes… boy do I wish I would of gone your route… I have 98% DS9 modulation on both downlink and uplink on my 5km link and the most I can get is 230mbps/70mbps. What size/make of antenna you using?
I’m using the cheap RocketDish 5G-30 LW. On the far side (the SM side) I’m also using an ISO BEAM isolator, because there’s a bunch of other antennas on that tower.
I chose the 30 dB 2’ dishes because that’s what we’re using on the AF5xHD link that is right next to the Force400 – and I wanted to do a good ‘head to head’ comparison for Cambium.
I do also have a couple of the 3 foot, 34dB dishes which I’m wanting to upgrade too, just for tighter beams and better isolation. But - it’s been 38-43 below for the last while here… so that’s slowing down outside work.
