I have heard tales of cyrogenic LNA with NF below 1 dB.
-Original Message-
From: Brian Webster
Sent: Thursday, July 12, 2018 5:43 PM
To: 'AnimalFarm Microwave Users Group'
Subject: Re: [AFMUG] How to count amplifiers in link budget
Also keep in mind in the cellular world they used
Also keep in mind in the cellular world they used diversity antennas and
pre-amps to make up for the lower return path power budget. Their radios have
separate transmit and receive ports and antenna systems, they are not locked in
to the one antenna half duplex mentality. Having a separate
Sterling is right, if you still don't find what you need though reach out to me
and I will find you a solution!
Layne Sisk
ServerPlus
801.426.8283, ext 102
-Original Message-
From: AF On Behalf Of Caleb Knauer
Sent: Thursday, July 12, 2018 12:56 PM
To: AnimalFarm
Good to know.
On 7/12/2018 3:30 PM, ch...@wbmfg.com wrote:
3dB NF is nothing to crow about these days. Lots of front ends and
preamps are below 2 dB. Even 1.5 is common.
-Original Message- From: Adam Moffett
Sent: Thursday, July 12, 2018 1:24 PM
To: af@af.afmug.com
Subject: Re:
Understood. This is 700mhz A-Block, so I'm allowed 1000W ERP in one
direction and 30W ERP in the other. I hadn't thought it through yet
when I talked about amping the 30W side.
My thinking was to use the higher power channel for downlink. I'm
looking at setting Tx power to +24, adding an
I had an end get hit by lightning, replaced it and now less than two years
later it looks like there is a hardware failure brewing on the new radio.
Tired of replacing them and their price went up by nearly 50% since I
originally bought the link. Plus, now they want a few hundred dollars to
Remembering also that you will likely need a balanced path so if both ends
of the link don't have the amplification you may have a problem. Amps with a
preamplifier also included have noise figures that don't always give you a
realized gain on the receive side. Using antenna gain over just
Yeah, I actually have 1000W ERP, my mistake.
On 7/12/2018 2:16 PM, Robert Andrews wrote:
But he said he gets 30 ERP not 30 EIRP where EIRP = 1.64 * ERP ( if he
is actually allowed 30 ERP and not 30 EIRP ). So that would be 49.2
EIRP IF he is allowed 30 _ERP_.. so 49.2. watts would be
Cool thanks.
On Wed, Jul 11, 2018 at 8:58 PM, Sterling Jacobson wrote:
> Senawave or Beehive might be able to connect you out there.
>
> -Original Message-
> From: AF On Behalf Of Caleb Knauer
> Sent: Wednesday, July 11, 2018 11:47 AM
> To: af@af.afmug.com
> Subject: [AFMUG] Service in
Why are you replacing it?
On Thu, Jul 12, 2018 at 1:55 PM, Jason McKemie
wrote:
> I have a SIAE link I'm looking to potentially replace with something else.
> Currently using Valuline antennas - I'd like to re-use these for a new link.
> What are the options for doing this? New interface plate?
No, solidworks.
-Original Message-
From: Robert Andrews
Sent: Thursday, July 12, 2018 12:18 PM
To: af@af.afmug.com
Subject: Re: [AFMUG] Valuline Antenna adapter
So you do your cad design in sketchup?
On 07/12/2018 11:09 AM, ch...@wbmfg.com wrote:
Something like this?
image
So you do your cad design in sketchup?
On 07/12/2018 11:09 AM, ch...@wbmfg.com wrote:
Something like this?
image
*From:* Jason McKemie
*Sent:* Thursday, July 12, 2018 11:55 AM
*To:* AnimalFarm Microwave Users Group
*Subject:* [AFMUG] Valuline Antenna adapter
I have a SIAE link I'm looking to
But he said he gets 30 ERP not 30 EIRP where EIRP = 1.64 * ERP ( if he
is actually allowed 30 ERP and not 30 EIRP ). So that would be 49.2
EIRP IF he is allowed 30 _ERP_.. so 49.2. watts would be another 2.15
db.. 9.85 dbm gain antenna. Still no need for an amp...
Please check my math
I read that as the 5w was with antenna. Chuck is correct. 7dbm antenna and
you are good to go.
On Thu, Jul 12, 2018 at 10:33 AM Jason Wilson
wrote:
> 44dbm is your target. You are at 37dbm now. 8dbm amplifier should take
> care of any cable loss.
>
> On Thu, Jul 12, 2018 at 10:08 AM Adam
44dbm is your target. You are at 37dbm now. 8dbm amplifier should take
care of any cable loss.
On Thu, Jul 12, 2018 at 10:08 AM Adam Moffett wrote:
> I'm looking at an IoT application where we're allowed 30W ERP. The
> transmitter is 5W, so even with antenna gain I have room to amplify that.
Yep, that is how you do it. 30 watts EIRP is 44.7 dBm
5 watts is 37 dBm. So 44.7 - 37 = 7.7 dB gain.
A 7.7 dBi antenna is pretty common.
After adding antenna gain, I don't see much room to amplify.
-Original Message-
From: Adam Moffett
Sent: Thursday, July 12, 2018 11:06 AM
I'm looking at an IoT application where we're allowed 30W ERP. The
transmitter is 5W, so even with antenna gain I have room to amplify that.
How do you count an amplifier in your link budget? Just add the amp's
tx gain and subtract connectors, or is there more to it than that?
Strangely
looks like you can unblock her IP from that site.
probably should scan her computer for nasties too
- Original Message -
From: Faisal Imtiaz
To: AnimalFarm Microwave Users Group
Sent: Thursday, July 12, 2018 11:37 AM
Subject: Re: [AFMUG] OT: Mom's email problem
read the
Yeah, I got that and told her that her email my have been flagged for
that reason. I put her IP address in the link and it wasn't blocked.
Just trying to stay in the will.
Faisal Imtiaz wrote:
read the error message !
=
Diagnostic-Code: smtp; 553 5.3.0 68.114.190.26
Please consider using a CRS3xx instead of CRS2xx as your design goal of
'discrete' VLANs will bypass hardware offload in a CRS2xx and affect
performance.
https://wiki.mikrotik.com/wiki/Manual:CRS1xx/2xx_series_switches#Bridge_Hardware_Offloading
--dan
On 7/10/2018 10:35 AM, Tim Cailloux
20 matches
Mail list logo
