Something is still messed up with the list text/HTML thing. I hit reply
to this message and TB quoted only what's below.
Anyway.... I agree. As much as I hate it, we can't live without 900. We
are doing everything we can to get customers on LOS, but the 900 is
there as a last resort and is the only viable solution. We put up used
(good condition) Rohn 25 for customers and charge them 10 or so % over
cost + labor just to get them on LOS. It's very time consuming.
The problem I see with 900 MIMO/450 is replacing literally over a
thousand antennas, customers and towers. We made a substantial
investment in LMG/Antel 900-360H omni antennas. I know, omnis are bad,
but they work for small sites. Problem is, we quickly outgrew most of
the small sites, so we made yet another investment in sectorizing with
at least 4x90's. To replace all of that now would be... no, just no.
Besides the antenna thing, V pol is trashed from all the SCADA and other
crap so I see no point in trying to do MIMO in 900. 64-QAM SISO would be
better than FSK.
On 9/19/2014 4:34 PM, Christopher Tyler via Af wrote:
I love the 450, 450 is awesome, but 90% of our subs are on 900 MHz, what do we
do there, where is our upgrade path, what is the replacement for PMP100 in 900
MHz?
We have no alternative to 900 for most of our customers where we are, too many
hills and trees. We are still deploying 900 MHz radios in large quantities
simply because we can't use anything else. Sure would be nice to have an easy
way to configure those radios, we (Animal Farm) have only been asking for that
feature for the last 8 years, not like they didn't know about it or have the
time to figure it out. Now they are giving it to us, but only on a platform
where we don't really need it yet.
While I understand that PMP100 is somewhat antiquated, Cambium is still making
money on it and will continue to make money on it, so why not give us at least
some development beyond bug fixes at least until there is a 900 replacement?
Why not a 450 in 900 MHz that's using the newer hardware but still only 2x
modulation. We would literally buy thousands of them within the next year.
