Ubiquiti's airFiber line is notorious for not giving you all of the information you need for proper engineering.
----- Mike Hammett Intelligent Computing Solutions Midwest Internet Exchange The Brothers WISP ----- Original Message ----- From: [email protected] To: [email protected] Sent: Thursday, October 6, 2016 9:21:59 AM Subject: Re: [AFMUG] Siklu Distance If the data is not there they are hiding something/blowing smoke. More detailed engineering data always makes your product look more legit. Remember the radios that used to give you only range? Good for 25 miles... From: Daniel White Sent: Wednesday, October 5, 2016 11:12 PM To: [email protected] Subject: Re: [AFMUG] Siklu Distance The entire time I worked for BridgeWave, TX Power was never on the datasheet. Only link budget. Same with Siklu datasheets – only link budget is there. I’m lazy now with online calculators… but I like having all of the data myself. I’ve always been bothered by not having RX sensitivity tables and TX power information on datasheets as well. I feel like they are trying to hide something :-D 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 7:46 PM To: [email protected] Subject: Re: [AFMUG] Siklu Distance 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: <blockquote> 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: <blockquote> 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] <blockquote> From: "Jason McKemie" < [email protected] > To: [email protected] Sent: Wednesday, October 5, 2016 1:22:39 PM Subject: [AFMUG] Siklu Distance <blockquote> 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... </blockquote> </blockquote> </blockquote> Virus-free. www.avast.com </blockquote> Virus-free. www.avast.com
