Mystery deepens.
The 19 dBm (combined) power limit seems to only be on the BH Master.
The BH slave still lets me use 22 dBm.
The PTP450 User Guide does seem to state that the maximum power is 19
dBm (combined).
I'm thinking there is some FCC mumbo jumbo going on. Possibly to do
with the PTP450 being a jiggered-up PMP450 SM. Maybe it was only
certified in the SM configuration, hence is limited to 36 dBm max EIRP?
The 3650 version will let you go up to 25 dBm...
Maybe they need to put the big heat sink on the back of the 5.8GHz version?
Go Giants!
bp
On 10/10/2014 5:56 PM, Bill Prince via Af wrote:
I turned the external gain down to 0 just to see if that was it; no soap.
Then I changed the band to 5.4 GHz, and it let me set the power to 19 dBm.
Then I changed it back to 5.7 GHz, and for a moment, it went to 22
dBm.� Until I clicked on "Save Changes", then it went back to 19 dB.
We're using these with 28 dBm panels, so we should be ~~ 50 dBm EIRP
(minus cable loss).� That "should" be legal AFAIK.
So the GUI is turning it down for reasons I don't understand...
This will be an 8.6 mile PTP link.� I could use every drop of dBm
that I can eek out of these puppies.
bp
On 10/10/2014 5:34 PM, George Skorup (Cyber Broadcasting) via Af wrote:
External gain setting? I've also noticed that if the carrier
frequency is set to None, it will let you put in the max Tx power for
the hardware. Set a real frequency and you're limited to whatever
regulatory EIRP it was authorized for. For instance, if it's a
connectorized unit, Cambium probably had it certified with a 2' dish
at 28-29dBi, so it would not surprise me if all you get is +19 to
meet spectral masks and OOB crap. Like the 2.4 450SM on a reflector
cannot operate above 2460 on a 20MHz channel because of whatever
impedance thing happens with that.
On 10/10/2014 7:01 PM, Bill Prince via Af wrote:
The master is locked to North America/United States.
But when first powered the unit on, it __*was*__ set to 22 dBm.�
After I configured it, it went to 16/16 (19 combined), and won't let
me change it.
bp
On 10/10/2014 10:37 AM, Peter Kranz via Af wrote:
You've got something regulatory going on.. the radios can transmit
up to 22dbm combined H+V.. or perhaps your seeing the single chain
power level of 19 dBm..
�
�
Peter Kranz
Founder/CEO - Unwired Ltd
www.UnwiredLtd.com
Desk: 510-868-1614 x100
Mobile: 510-207-0000
[email protected]
