No I've never been "let down" by one - there's link budget info there, but up until very recently their datasheets didn't have the radio's Tx power in them. Whereas the older E-band manufacturers put their Tx power right out there in the data table for the radio alongside stuff like the power consumption. Making it much easier to manually calculate a predicted link with a typical 30 or 60cm antenna rather than using a manufacturer's online web page link estimation tool.
Maybe I'm too old school and remember when it was necessary to manually calculate a link because there was no such thing as a GUI HTML5 link budget tool on a manufacturer's website, you actually had to think about things like transmit power, RSL thresholds in dB for varying modulations, etc. On Wed, Oct 5, 2016 at 6:37 PM, Daniel White <[email protected]> wrote: > I feel like Siklu let you down in some horrible way Eric. > > > > Siklu has their link budget info right on their datasheets. Need the > extra TX power, go with one of the newer radios. > > > > 700 – 5dBm > > 1200 – 7dBm > > 2200 – 11dBm > > 2500 – 18.5dBm > > 5500 – 16dBm (what’s this ;-) > > > > http://lbc.siklu.com/ > > > > Back when they only had the 1200 which has that +7dBm TX power is > certainly limited the radio, and many people mis-deployed it under > guidelines they would use for BridgeWave. But that is simply poor > engineering. > > > > But also to put into context – lowest average rain rate in North America > is typically 25 mm/hr for 99.99% operation. That is 10dB of fade at 1km at > 99.99% availability. So your argument is true – that is 1km of distance > your leaving on the table. See the chart below I made many moons ago. > > > > > > Every 60GHz/80GHz (regardless of vendor) I have engineered performs to > spec. Engineer, engineer, engineer. > > > > Daniel White > > Managing Director – Hardware Distribution Sales > > ConVergence Technologies > > Cell: +1 (303) 746-3590 > > [email protected] > > > > *From:* Af [mailto:[email protected]] *On Behalf Of *Eric Kuhnke > *Sent:* Wednesday, October 5, 2016 1:13 PM > *To:* [email protected] > *Subject:* Re: [AFMUG] Siklu Distance > > > > Siklu's sales and marketing department goes to a great deal of effort and > fluff to obscure the fact that many of their 80 GHz radios are not +18 or > +19 Tx power, but are more like +7 or +10 coming out of the radio waveguide > port. > > > There's a reason why some of the more expensive 80 GHz products > (Moseley/Remec/Bridgewave), SIAE, NEC etc are more costly, that's because > of the total link budget you can achieve with +18 Tx power going into a > 52dBi gain 60cm antenna. > > > > On Wed, Oct 5, 2016 at 12:10 PM, Jason McKemie < > [email protected]> wrote: > > Their charts on that sheet still seem fairly optimistic to me. > > > > On Wed, Oct 5, 2016 at 12:44 PM, Faisal Imtiaz <[email protected]> > wrote: > > Context ! Context ! Context ! > > > > > > http://www.siklu.com/wp-content/uploads/2016/08/ > Overbuild-tech-note-Final-.pdf > > > > Some interesting suggestions in there ! > > > > > > Faisal Imtiaz > Snappy Internet & Telecom > 7266 SW 48 Street > Miami, FL 33155 > Tel: 305 663 5518 x 232 > > Help-desk: (305)663-5518 Option 2 or Email: [email protected] > > > ------------------------------ > > *From: *"Jason McKemie" <[email protected]> > *To: *[email protected] > *Sent: *Wednesday, October 5, 2016 1:22:39 PM > *Subject: *[AFMUG] Siklu Distance > > I received an email from Siklu saying their equipment could offer gigabit > speeds at 8+ miles. This seems dishonest at best. I guess they didn't say > where the link had to be located to get this distance... > > > > > > > > > <https://www.avast.com/en-us/lp-safe-emailing-2270-c?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=oa-2270-c> > Virus-free. > www.avast.com > <https://www.avast.com/en-us/lp-safe-emailing-2270-c?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=oa-2270-c> >
