Bi-directional amplifiers or only Tx?
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Mike Hammett
Intelligent Computing Solutions
Midwest Internet Exchange
The Brothers WISP
----- Original Message -----
From: "Lewis Bergman" <lewis.berg...@gmail.com>
To: af@afmug.com
Sent: Thursday, October 5, 2017 8:30:12 AM
Subject: Re: [AFMUG] Vegas Mass Shooting
It is possible to replace more sites with less depending on how they are
designed and what topography you are battling. We did this a number of years
ago. The big key was tower top amplifiers allowed us to eliminate the extra
sites without losing portable overage.
Just like RadioMobile, engineering propagation programs and knowing how to use
them are a pretty big key to successfully designing a system.
On Wed, Oct 4, 2017 at 9:41 PM Mike Hammett < af...@ics-il.net > wrote:
DeKalb county is moving from 17 sites on VHF to 4 sites on digital. Yeah
fucking right.
If I had more county board meeting experience, I would have grilled their
consultant when he gave stupid answers to questions, but I didn't know that I
could counter.
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Mike Hammett
Intelligent Computing Solutions
Midwest Internet Exchange
The Brothers WISP
From: "George Skorup" < george.sko...@cbcast.com >
To: af@afmug.com
Sent: Wednesday, October 4, 2017 7:10:59 PM
Subject: Re: [AFMUG] Vegas Mass Shooting
Like Hammet says, not enough sites is the major issue with digital. They all
think digital lets them get more for less. Totally not the case, as many
agencies have found.
On 10/4/2017 6:50 PM, Matt Hoppes wrote:
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In PA the state police hate the digital system. So they carry two radios in
their cars. The state digital and their own VHF. It's stupid.
On Oct 4, 2017, at 19:37, Lewis Bergman < lewis.berg...@gmail.com > wrote:
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Me thinks I am probably the only one on this list with decades of public safety
and commercial two way radio experience and still in the business. I'll sum it
up.
* All Two Way channels are getting narrower
* Digital is the way things are going to continue to go
* It ain't going back
It doesn't matter that 95% of the geography doesn't need it. These trends are
driven by the dense population areas that require more spectral efficiency and
there isn't anything anyone is going to do about it. FirstNet is the same thing
with different bands. Second, try 12.5KHz or 6.25KHz without digital and see
what that crap sounds like. I lived through it and companding was a lot worse.
Most of you aren't old enough to remember when the channel sizes were all 50KHz
instead of 25KHz and everything sounded beautiful. Those days aren't coming
back.
No matter what vocoder is used some tuning to dialect and speech helps. Having
said all that, some voices are not going to sound good on any narrowband. If
you come from analog wideband to narrowband digital it all sounds like crap.
You get used the the difference and there is no issue understanding words or
intent.
In short; everything sounds better wide band, there is no wide band, get over
it.
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On Wed, Oct 4, 2017 at 5:05 PM George Skorup < george.sko...@cbcast.com >
wrote:
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P25 Phase-I uses the IMBE vocoder. Yeah, that kinda sounds like shit. Phase-II
uses the AMBE+2 vocoder, but then you have the TDMA split into two time slots,
i.e. half the bandwidth. Still better than IMBE. DMR/TRBO is also 2-slot TDMA
using AMBE+2. I use it and don't think it sounds that bad at all. Add
encryption overhead and it sounds worse, regardless of the vocoder used.
Bandwidth, bandwidth, bandwidth.
On 10/4/2017 9:27 AM, Matt Hoppes wrote:
<blockquote>
But it does. In a stressful situation the last thing you need is to not be able
to understand communication on the radio.
On Oct 4, 2017, at 10:20, Josh Luthman < j...@imaginenetworksllc.com > wrote:
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Hitting delete is so damn easy tho
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Josh Luthman
Office: 937-552-2340
Direct: 937-552-2343
1100 Wayne St
Suite 1337
Troy, OH 45373
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On Wed, Oct 4, 2017 at 10:17 AM, Matt Hoppes <
mattli...@rivervalleyinternet.net > wrote:
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Maybe if they weren't running P 25 or whatever that digital compression crap is
on the radio's conversation would've flown a little bit better. For some reason
digital radio get sold over and over and over to Public Safety as being the
cats meow, but here in Pennsylvania is a great example of how it just doesn't
work. We spend millions of dollars retrofitting a system just to start trying
to go to another one.
The last thing you need in a stressful situation is everyone sounding in the
abbreviated and codex scaling down because the signal level going to repeater
isn't good
On Oct 4, 2017, at 10:13, Jason McKemie < j.mcke...@veloxinetbroadband.com >
wrote:
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The zones could have been wrong - it happens.
On Wednesday, October 4, 2017, Matt Hoppes < mattli...@rivervalleyinternet.net
> wrote:
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Right but if the fire alarm is what led them there, shouldn't there of been a
big red light flashing on the annunciator panel for what room it was?
On Oct 4, 2017, at 09:04, Josh Reynolds < j...@kyneticwifi.com > wrote:
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Could have been caused by all kinds of shit. Takes awhile for the brain to
work. That night was pure chaos with all kinds of false reports.
On Oct 4, 2017 8:01 AM, "Matt Hoppes" < mattli...@rivervalleyinternet.net >
wrote:
<blockquote>
So as long as we are so off-topic on this.
Does this seem odd to anyone else? I feel like if there is an alarm going off,
the fire panel would indicate the room it was in.
"The SWAT team utilized the alarm activated by the smoke to determine Paddock's
location. But it still took SWAT some 20 minutes from the time they arrived at
the hotel to pinpoint the exact room Paddock was located in, according to The
Post."
On Oct 4, 2017, at 08:54, Mike Hammett < af...@ics-il.net > wrote:
<blockquote>
The description of sackcloth doesn't sound like doesn't sound like something
I'd want to use for what it's name implies.
-----
Mike Hammett
Intelligent Computing Solutions
Midwest Internet Exchange
The Brothers WISP
From: "James Howard" < ja...@litewire.net >
To: " af@afmug.com " < af@afmug.com >
Sent: Tuesday, October 3, 2017 9:19:22 PM
Subject: Re: [AFMUG] Vegas Mass Shooting
Sackcloth and ashes for everyone!
From: Af [ mailto:af-boun...@afmug.com ] On Behalf Of Chuck McCown
Sent: Tuesday, October 3, 2017 3:08 PM
To: af@afmug.com
Subject: Re: [AFMUG] Vegas Mass Shooting
Because we invoked Lent due to things that transpired last fall. I think it is
time to remind everyone that it is still Lent at AnimalFarm.
From: Jeremy
Sent: Tuesday, October 03, 2017 1:56 PM
To: af@afmug.com
Subject: Re: [AFMUG] Vegas Mass Shooting
This isn't a message board, with 'threads' that can be closed. It is an email
list, and people can say whatever the hell they want. Why is everyone so
sensitive to constructive or even non-constructive debate? Bunch of pussies....
On Tue, Oct 3, 2017 at 9:51 AM, Carl Peterson < cpeter...@portnetworks.com >
wrote:
<blockquote>
Can we either drop this discussion or open it up to real discussion?
On Tue, Oct 3, 2017 at 11:43 AM, Bill Prince < part15...@gmail.com > wrote:
<blockquote>
So we should just chemically castrate any male over 26 or so. Medically neuter
the population.
We can start with Steve.
bp <part15sbs{at}gmail{dot}com>
On 10/3/2017 7:57 AM, Steve Jones wrote:
<blockquote>
Sheeple should really be more concerned about identifying day to day criminals
than mass murderers. Gangs have more mass murderers walking the streets next to
you daily today than all the combined mass murderers in the history of the
country. The city of chicago has a higher shooting/kill count this year than
this guy.
Worrying about identifying mass shooters beforehand is the epitome not seeing
the forrest through the trees.
Really should have killed this thread.
On Oct 3, 2017 9:50 AM, "Bill Prince" < part15...@gmail.com > wrote:
<blockquote>
Reports on NPR is that there were both full auto as well as "conversions" in
the assortment of 23-some-odd weapons found in the room.
bp <part15sbs{at}gmail{dot}com
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