The chart is a starting point, but it doesn’t reference availability and rain fade… or maybe take into account ACM.
Lots of variables to determine distance on anything above 10GHz (and below that, multipath fade is important). I’d contact the manufacturer of the radio system your looking at to help determine range in your area based on your design criteria. Trango I see has the PathCheck app, and I know SAF has an Excel calculator on their website. I’m sure other vendors like Exalt have something similar. Thank you, Daniel White <mailto:[email protected]> [email protected] Cell: +1 (303) 746-3590 Skype: danieldwhite Social: <http://www.linkedin.com/in/danielwhite84> LinkedIn: <https://twitter.com/DanielWhite84> Twitter From: Af [mailto:[email protected]] On Behalf Of Faisal Imtiaz Sent: Saturday, October 17, 2015 9:39 PM To: [email protected] Subject: Re: [AFMUG] Trango stratalink 24 sale https://www.trangosys.com/24-ghz-distance-capacity 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] <mailto:[email protected]> _____ From: "Eric Kuhnke" <[email protected] <mailto:[email protected]> > To: [email protected] <mailto:[email protected]> Sent: Thursday, October 15, 2015 6:00:16 PM Subject: Re: [AFMUG] Trango stratalink 24 sale I don't think you can use a 3' antenna with the stratalink24 in FCC land due to total eirp limits... Just Canada or other places. On Oct 15, 2015 2:12 PM, "Adam Moffett" <[email protected] <mailto:[email protected]> > wrote: Sync is a good feature, but personally, given the low EIRP limit at 24ghz I think the option for higher antenna gain is a bigger deal. I also suspect that high perf dishes would allow for channel re-use without sync. I really can't do 24ghz more than 3 miles in any case, so it's pretty rare that we're using any of these things to start with. So I don't have as much experience with that as some of you do, and maybe my opinion is not well informed. On 10/15/2015 4:34 PM, George Skorup wrote: Exalt is also doing their ExtendAir G2 in 24GHz U/L now. Which is probably about the same pricing as the Stratalink, although ~half the speed being that it's only 256QAM. Neither of these seem reasonable to me when the AF24 exists. Yeah, the AF24 uses the whole 200MHz, but at least you can sync them. On 10/15/2015 1:44 PM, Bill Prince wrote: Yes. Midwest maximum rain rates are way up there. Looking back in our records, our AF24 (not HD) have lost ~~ 3 dBm during our last real rain event last December. These are 2.25 mile links. bp <part15sbs{at}gmail{dot}com> On 10/15/2015 11:38 AM, Eric Kuhnke wrote: The funny thing about the pacific northwest is that it's only ITU rain zone D. We get constant rain and drizzle and grey skies that causes acceptable fades (like, an 18 GHz link that normally sites at -37 with no rain will hang out at -49 for days at a time), but major downpour events are relatively rare. It's the mm/hour... If I recall correctly some locations that are less famously rainy such as Baltimore or Chicago actually have more frequent high mm/hour rain events than Seattle. Thus a link designed to be at max capacity for five nines will be shorter in Chicago than in Portland or Seattle. On Thu, Oct 15, 2015 at 11:36 AM, Bill Prince <[email protected] <mailto:[email protected]> > wrote: Agreed for the NW where you are. We're in the SF bay area, and we get "rain", but not like you guys. For the last 4 years we haven't even gotten that. I know of a couple situations that are getting almost 10 miles on a AF24HD. bp <part15sbs{at}gmail{dot}com> On 10/15/2015 11:31 AM, Eric Kuhnke wrote: 5.5 miles is probably asking too much, I would use it at a max of 5-6 km in a Pacific Northwest rain zone. --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus
