Re: [AFMUG] NED vs SRTM

[Adam Moffett]

Only about 7 miles...one end hasn't been erected yet, so nothing to 
climb and nothing to look for.

How long is the link?  Can you just climb and look with binoculars, or 
a hyperzoom camera?  Does one end have a strobe you can look for?
*From:* Cameron Crum <mailto:cc...@wispmon.com>
*Sent:* Tuesday, July 21, 2015 5:51 PM
*To:* af@afmug.com <mailto:af@afmug.com>
*Subject:* Re: [AFMUG] NED vs SRTM
I think NED is pretty old data. You might look at the old DEMs in sdts 
format. Those were pretty accurate before srtm came along. You can 
download them from a few different sources, but you would have to know 
what to do with them or have software which could extract the data.
'
Cameron
On Tue, Jul 21, 2015 at 5:18 PM, Adam Moffett <dmmoff...@gmail.com 
<mailto:dmmoff...@gmail.com>> wrote:

    If there's a 5 meter discrepancy between USGS National Elevation
    Data and the Shuttle Radar Topography Mission, who would you
    trust? Would you bet $500 on it?

    In this case, with NED I'll have LOS on a backhaul, and with SRTM
    I'm in the woods.  I'm under the impression that SRTM sometimes
    gets you treetops rather than the ground.  If I'm wrong I have
    alternate paths, but I'd have to pay for a new PCN....so it really
    is a $500 bet. :)