[MVMA] Interest in MVMA AUXCOMM

Tue Nov 20 18:40:01 EST 2018

Hey everyone.  I am trying to follow along but I must admit that I get
confused at times in discussions like this.

>From what I understand you are referring to injecting power on an Ethernet
cable (Ethernet power injection) most of the time but it seems some of the
time you are referring to POE standards compliant power injection.

The reason it makes a difference to me is my experience with POE phone
system components.  The POE standard allows a device to negotiate a voltage
and power level. All of this works great but when mixing the two types of
systems bad things can happen, namely equipment loss.  Some devices are
made to allow for Ethernet power injection but require too much power to be
POE compliant.

The reason I would like clarification is because I  don’t want to mis-guide
anyone or cause damage to mine or their equipment.  I have many devices
that are POE compliant and can answer questions about managed POE switches
and routers   What I have very limited experience with is actual mesh
hardware and system topology.  The experience I do have suggests to me that
either there are problems in the routing algorithms (Iknow for sure there
have bee) or networks are set up oversimplified for ease of operation.  I
have a lot to learn about the way the mesh algorithms work and want to
understand how to interface them with more traditional routing algorithms.
I have focused on that part of it because the reality is we may have to
make it work seamlessly with commercial systems in a real emergency.
 Sorry for writing a novel!

Looking forward to seeing this network grow!

Cheers!
Andy,  KC8AZW

On Sun, Nov 18, 2018 at 8:37 PM Rob Lindsay <roblindsay at gmail.com> wrote:

> After I sent the email I realized I typed 48v.  I meant 24.  Sorry about
> that.
>
> Reuben - thank you I will.
>
> Rob
>
> On Sun, Nov 18, 2018, 7:16 PM Reuben Meeks <rcmeeksjr at gmail.com wrote:
>
>> Rob. I make my POE's. Amazon sell modules for about $5.00, which
>> will give you the 12v to 24 thru 50 volts you need.
>>
>> The Cat Injector device is also obtainable for $5 or so dollars.
>>
>> When you have a chance, get with me and I will show you how to make your
>> POE's.
>>
>> Best Regards,
>> Reuben, W8GUC
>>
>> C. (937) 266-1245
>>
>>
>>
>> On Sun, Nov 18, 2018 at 1:38 PM Rob Lindsay <roblindsay at gmail.com> wrote:
>>
>>> Can anyone recommend a 12v DC input to 48 V output POE?   For portable
>>> ops, I'm using a 12 volt inverter out of the car and then plugging in the
>>> ac to dc POE. I'd like to move to LiFePo in the future and avoid the losses
>>> of DC to AC to DC.
>>>
>>> Myself and Kevin, W8KJ can mobilize at least four portable stations at
>>> this point.
>>>
>>> If someone would do the legwork and map out test locations along with
>>> high profile receive sites, I'd be willing to take a road trip and test out
>>> the key locations to see if I can get into the mesh, next weekend.  I would
>>> be portable with a 2.4 GHz AirGrid unit and I can try an omni also.
>>>
>>> Rob, W8MRL
>>>
>>> On Fri, Nov 16, 2018 at 12:46 PM Chuck Gelm <nc8q-mesh at gelm.net> wrote:
>>>
>>>>
>>>>
>>>> On 11/16/2018 10:31 AM, Moe wrote:
>>>>
>>>> AFAIK, no one has done site surveys to test locations where deployable mesh nodes could operate in the area (except perhaps the roof of Greene Memorial in Xenia and I don’t know if that ever happened). Correct me if I’m wrong.
>>>>
>>>> AFAIK, and I’m not sure they’re required, our local ARES organizations have no mesh-specific locations/arrangements with served agencies. Correct me if I’m wrong.
>>>>
>>>> AFAIK, except for Reuben W8GUC, no one in the MVMA has ready-to-go deployable off-grid node setup(s) (I don’t count a bunch of  gear that might be thrown together at the last minute). I know some MVMA members have a Bullet+L-Com or NanoStation M2 (NSM2) but have no 12V/24V PoE, rechargeable batteries/charging, portable elevated mounting, available VoIP phone, or available notebook and recharge for it.  Correct me if I’m wrong.
>>>>
>>>> I have
>>>>
>>>> ready-to-go deployable off-grid node setup(s) (I don’t count a bunch of  gear that might be thrown together at the last minute). I know some MVMA members have a Bullet+L-Com or NanoStation M2 (NSM2) but have no 12V/24V PoE, rechargeable batteries/charging, portable elevated mounting, available VoIP phone, or available notebook and recharge for it.
>>>>
>>>> Moe et alia:
>>>>
>>>> I have no 'off-grid' and no rechargable batteries, yet. I have one POE
>>>> for a mesh node.
>>>> I have no off-grid power for my IP phone nor laptop.
>>>> I have the rest of the items 'in a box' and often set it up on weekends.
>>>> My 'mesh-go-box' needs
>>>>
>>>>    - 120vac and either an internet connection or
>>>>    - 120vac, the tri-pod mount and the 2 two-by-fours and the mast in
>>>>    the garage, a large phillips screwdriver, and an adjustable wrench
>>>>    (What I used at Maker Faire 2018).
>>>>
>>>>
>>>> OTOH, I do not expect to be deployed to a shelter location either.
>>>> I do not expect to be invited to support or liaise with the Red Cross's
>>>> "Safe and Well" service.
>>>> If these items were to become more likely, I would likely accelerate my
>>>> 'off-grid' efforts.
>>>> Currently, I feel that an off-grid mesh capable station would be a
>>>> solution in search of a problem.
>>>> ;-)
>>>>
>>>> Chuck
>>>>
>>>>
>>>>
>>>> Is AUXCOMM in the MVMA important enough for you to (get ARES qualified if not) build and demonstrate a functional off-grid, deployable mesh node setup linked to one of our 2.4 GHz omnis… especially if you already have a node available? We’ll ensure you get time at an MVMA meeting, and even consider relocating said meeting to accommodate your demonstration if you can’t do it remotely during the meeting or video it. Are you then willing to participate in testing and mapping areas in the Miami Valley where it works or doesn’t? …with an 8’ tripod or a 30-40’ guyed mast?
>>>>
>>>> I’d like to know who’ll walk the walk. Who needs 2.4 GHz omnis for AUXCOMM? Please demonstrate that need.
>>>>
>>>> Thanks,
>>>> —
>>>> Moe
>>>> 73 de AB8XA
>>>>
>>>>
>>>>
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>>>
>>>
>>>
>>> --
>>> Rob Lindsay, W8MRL
>>>
>>>
>>>
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>>
>>
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