Most 1 watt SCADA radios can do the distance with 18 or 24db antennas and good cable with slow speeds for serial or real basic IP loads. Licensed 900 at 5 watts would be better but data rates are low. What do you need to get across? Where is this link going?
Jaime Solorza On May 6, 2015 2:18 PM, "Ken Hohhof" <[email protected]> wrote: > When you say low speed, how low? Like telemetry/SCADA speed? There > are FHSS systems intended for long links in 900 and 2.4, Jaime would be the > expert. I’ve also seen power companies and railroads do low speed links in > licensed 900 MHz, usually with a paraflector at each end. > > > *From:* Dan Petermann <[email protected]> > *Sent:* Wednesday, May 06, 2015 3:13 PM > *To:* [email protected] > *Subject:* Re: [AFMUG] 65 mile link > > 9402’ at one end and 7271’ at the other. Mountainous with no trees almost > no vegetation. > > > On May 6, 2015, at 1:09 PM, Chuck McCown <[email protected]> wrote: > > Good point, what does the path look like? If it is hill country or > mountains, high to low etc diversity may not be needed. But if the path is > flat at essentially the same elevation, it may be needed. If the path is > flat, same elevation over smooth stuff or water diversity will most likely > be needed. > > *From:* Colin Stanners <[email protected]> > *Sent:* Wednesday, May 06, 2015 12:57 PM > *To:* [email protected] > *Subject:* Re: [AFMUG] 65 mile link > > > You need spatial diversity for a link that far, and a good air protocol so > PTP400 with one 4ft or larger dish at one end and two 4ft dishes > (separated by 50ft? Link planner would tell) at the other. > On May 6, 2015 12:15 PM, "Dan Petermann" <[email protected]> wrote: > >> I have a customer that needs a low speed very long link. >> >> Link is 64 miles, 2200’ elevation change. >> >> I’m looking at a Last Mile Gear connectorized PTP100. Reliability is >> definitely needed. >> >> Any other radios you guys would recommend? >> >> 900MHz is out due to noise floor. >> >> >> >
