That's why he said *licensed* 900. Up past the ISM band.
On 5/6/2015 4:06 PM, Dan Petermann wrote:
It will be carrying scada. 900 is out as the noise floor at the lower
end is around -60 or so(middle of natural gas field).
On May 6, 2015, at 2:18 PM, Ken Hohhof <[email protected]
<mailto:[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 <mailto:[email protected]>
*Sent:* Wednesday, May 06, 2015 3:13 PM
*To:* [email protected] <mailto:[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]
<mailto:[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 <mailto:[email protected]>
*Sent:* Wednesday, May 06, 2015 12:57 PM
*To:* [email protected] <mailto:[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]
<mailto:[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.
