Oops, my bad. Thanks. Yea, it’s been a couple years. I have to get off my butt and do some more testing. Thanks. You know, if Cambium would send me one for a few days….. J If not, I have to work with a couple of colleagues and they are in a galaxy far, far away.
Rory From: Af [mailto:[email protected]] On Behalf Of Ken Hohhof via Af Sent: Wednesday, November 05, 2014 7:07 AM To: [email protected] Subject: Re: [AFMUG] Telrad LTE vs 450 3.65GHZ It does 20 MHz now and that’s where you would get ~125 Mbps throughput at 8X (256QAM) or ~90 Mbps at 6X (64QAM). You probably tested it before they released the firmware that enabled 8X modulation. Long ago in a galaxy far away they talked about 40 MHz, I haven’t heard anything about that recently. Possibly it’s a CPU limitation, they have only recently tweaked the firmware to get nearly full throughput to a single SM. In any case, 40 MHz in the 3650 band doesn’t make a lot of sense unless the FCC gives us more spectrum. And the 3650 version of the 450 SM is obviously different hardware, with the heatsink and the different LEDs and the $50 higher MSRP. Not sure if the FPGA and processor core got goosed up in the process. From: Rory Conaway via Af <mailto:[email protected]> Sent: Wednesday, November 05, 2014 7:54 AM To: [email protected] Subject: Re: [AFMUG] Telrad LTE vs 450 3.65GHZ I will be surprised if it can do 20MHz as it stands now unless you backtrack to 64QAM and even then, I doubt it but I could be wrong. The current 450 is rated at 125Mbps at 10MHz but that might be the PHY only. I remember seeing 90Mbps real-world but it’s been a while since I tested it. Rory From: Af [mailto:[email protected]] On Behalf Of Ken Hohhof via Af Sent: Wednesday, November 05, 2014 6:50 AM To: [email protected] Subject: Re: [AFMUG] Telrad LTE vs 450 3.65GHZ I believe you can do 20 MHz channels now with PMP450 if you can fit it into the available spectrum, but that doesn’t give you 250 Mbps, you’re probably thinking of 40 MHz channels. The big next step for the 3650 band in the US depends on what the FCC does. Big increase in spectrum, big change in rules, probably with database like TVWS. From: Rory Conaway via Af <mailto:[email protected]> Sent: Wednesday, November 05, 2014 12:07 AM To: [email protected] Subject: Re: [AFMUG] Telrad LTE vs 450 3.65GHZ They could put a faster processor on the AP side which either gives you 20MHz and 250Mbps which is the easiest step. Not sure what the client radios would do though although a faster CPE will probably come simultaneously. More ambitious would be a 4x4 version of the 450 with MU-MIMO. Rory From: Af [mailto:[email protected]] On Behalf Of That One Guy via Af Sent: Tuesday, November 04, 2014 10:19 PM To: [email protected] Subject: Re: [AFMUG] Telrad LTE vs 450 3.65GHZ i believe we have seen the cambium moneyshot at this point, what else could they do with 450? On Tue, Nov 4, 2014 at 10:35 PM, Tyler Treat via Af <[email protected]> wrote: So the real question becomes, what is the 450 roadmap moving forward? What kind of shock and awe is on the horizon….? From: Af [mailto:[email protected]] On Behalf Of Jason McKemie via Af Sent: Tuesday, November 04, 2014 9:55 PM To: [email protected] Subject: Re: [AFMUG] Telrad LTE vs 450 3.65GHZ The 450 is going to smoke the Telrad from a latency standpoint. This is a big downside to this gear IMO. If someone would optimize LTE for use in a fixed environment you could possibly get better latency, but I'm not seeing that happening. On Tue, Nov 4, 2014 at 9:40 AM, Matt via Af <[email protected]> wrote: Is anyone looking at both these options? Pros and cons of one vs other? Throughput, Sync, Interference, spectrum efficiency, cost etc? What I really wander is can you bond two non adjacent 10MHZ channels with Telrad to make a 20MHZ channel? I know you cannot with 450 and it might become very useful down the road. Right now with 450 and a perfect connection on a 20MHZ channel we can do around 80Mbps downstream per sector. With a 10MHZ channel and not so perfect connections that is really getting cut back. Also, right now we can do ABAB quite easily with 450 gear. With LTE can we do AAAA where spectrum is scarce? -- All parts should go together without forcing. You must remember that the parts you are reassembling were disassembled by you. Therefore, if you can't get them together again, there must be a reason. By all means, do not use a hammer. -- IBM maintenance manual, 1925
