In depth overview of the Cambium Networks PTP820 product line including features and new products. Presented by Brian Chan, Regional Technical Manager with Cambium Networks. Hosted by ISP Supplies.

Questions received :
Q. -  On average, what is the antenna size reduction you can utilize with the PTP820-HP
A. - From the designs I’ve done it’s usually one dish size. You can drop from 6’ to 4’ or 4’ to 3’ etc.

Q. - Are all the platforms (e.g. PTP820S, PTP820C, PTP820C-HP, PTP820E) able to do x-pic and what is the highest available modulation?
A. - Only 820C and 820C-HP (multicore radios) support XPIC, while 820S and 820E do not support XPIC. XPIC supports up to 2048QAM and does not limit the max modulation. This can be planned in LINKPlanner to determine the throughput and availability of links with XPIC and whether it will work well or not.

Q. - Is there flexibility in channel width usage.  (e.g. 11GHz with a 40 MHz channel and 56MHz channel).  Can you achieve maximum data rates with a single channel?
A. - Yes, there is flexibility in channel sizes, but the channel sizes that can be configured are limited by what the region allows. Here in the US the FCC has limits on channel sizes that can be configured. In 11GHz for example the channel sizes that links can be licensed for are 10/30/40/80MHz. The larger the channel size the higher the throughput. An 80MHz channel will achieve about 600Mbps in the highest modulation mode. If the question is about using flexible channels in 2+0 different channel sizes are not supported and they must be the same channel size.

Q. - PTP820C-HP is there a 18GHz option on the road map
A. - No, 820 C-HP only exists in 6/11GHz.

Q. - Is it possible to use Wave guide for the antenna interface if needed?
A. - Yes, remote mount is supported to interface to a third party dish. This will involve remote mount kits and interface adaptors.

Q. - How to effectively sell against the Mimosa B11 or even the AF11.  Both of those options are substantially less money.  Though they have their limitations.  On paper, the dollars and cents resonate with the customer.
A. - This is a good point. B11 and AF11 are lower cost than PTP820. In some cases customers are happy with these solutions, but in other cases customers are willing to spend more for a more robust solution. We have competitive analyses that highlight the differentiators of the 820 series over the lower cost alternatives that we can share. Briefly, the PTP820 has much lower latency, higher reliability with lower frame loss, and higher spectral efficiency.

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