yep Steve,,that's what I used as well as online Radio Mobile but I could not add in trees. I don't do enough studies a year to warrant spending thousands on TAP or other such programs. Jaime Solorza Wireless Systems Architect 915-861-1390
On Mon, Feb 8, 2021 at 6:01 PM Steve Jones <[email protected]> wrote: > Linkplanner doesnt calculate penetration, trees are full obstructions. one > of the very very few things i dont care for about linkplanner. I dont know > if radio mobile would give you closer numbers. radiomobile has an online > version thats easy to use > > On Mon, Feb 8, 2021 at 5:14 PM Jaime Solorza <[email protected]> > wrote: > >> We installed a licensed 928.xxx/952.xxxMHz link for SCADA project. We >> were only hired to install some VFD controls, the radio and antenna on a >> supplied 10 ft. mast installed by general contractor. >> They opted not to pay for a site survey from us months ago. >> When we were on site, I told the project mgr. that some existing trees a >> few feet in front of the antenna and the ten foot height were going to >> severely affect signal. He said go ahead and we will deal with it later. >> Later arrived. The link works with zero packet loss and all equipment >> responds as requested. The lift station is operational at -106dBm!!! >> The SCADA manager noticed that and now wants us to get it into the mid >> -60s range...I explained to him that we need to clear the trees to get a >> stronger signal. >> Five watt radio at mountain with 90ft of 1/2 inch Heliax and 12dB sector >> antenna...with 12dB yagi and same power at Lift Station...my calculations >> with trees show a -63dBm. I tried entering the trees (pine) but it threw >> the calculations way off. >> Trees are 30 ft. high and about 30 ft. in front of antenna and then >> several more about 250 ft. in path. >> How much absorption are these trees causing based on typical path >> analysis on empirical evidence? >> Thanks >> -- >> AF mailing list >> [email protected] >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
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