[arm-allstar] Radioless Node

[Doug Crompton]

Bob,

 Yes, that is a great way to do it. Have a fixed node that you connect your
mobile hotspot node to. The other advantage is that you can run a lower
bandwidth codec like ILBC or G729 between the mobile node and the fixed one
to lower data usage.


*73 Doug*

*WA3DSP*

*http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*


On Tue, Oct 31, 2017 at 10:41 PM, "Robert Prybyzerski via arm-allstar" <
arm-allstar at hamvoip.org> wrote:

> I created a Hub on a Pi so I could park my portable node there.  The
> portable node is using the Freedom Pop hotspot and cannot accept incoming
> connections.
> This way if someone needs to contact me they just connect to my hub.  I
> also park some of my other nodes there to create my own linked setup.
>
> Bob W2YMM
>
> Sent from my iPhone
> Bob W2YMM
> 631-960-1051
>
> > On Oct 31, 2017, at 10:27 PM, Doug Crompton via arm-allstar <
> arm-allstar at hamvoip.org> wrote:
> >
> > We often use the term "radioless node" but that really has two meanings.
> > One is a server that has no USB FOBS connected. I have several servers
> like
> > this acting a hubs. A hub is nothing more than a server that has more
> than
> > one node connected to it. Usually a lot more than one. A Pi operated
> > without a FOB and in turbo mode can handle a great deal of connected
> nodes.
> > I have had as many as 50 directly connected nodes to a Pi. Of course your
> > Internet connection needs to be able to handle the bandwidth of this many
> > nodes also. In general however an upper limit of around 30 direct
> > connections would probably be better.
> >
> > The other meaning is a node on a server with a USB FOB but no radio. I
> > described one in a howto on the hamvoip.org web page howto section
> several
> > years ago. It is nothing more than a microphone connected to the mic in
> of
> > the FOB and a small amplifier driving a speaker from the headphone out.
> PTT
> > on the FOB is not used and the microphone  PTT switch keys the COS input
> of
> > the FOB. You operate it in half duplex like a radio although you could
> > operated full duplex some way of muting your own transmissions would
> > probably be necessary.
> >
> > The only thing I use mine for is testing as it is very limiting to not
> have
> > the wireless flexibility of a radio. Radios are so cheap that putting
> > together a local radio node is probably a better idea. You can buy a pair
> > of the TID radios for $30 with drop-in chargers and the Baofeng's are in
> > the same price range.
> >
> > I might also remind users that the current simpleusb-tune-menu in V1.5
> has
> > a 'K' option meaning key which manually keys the COS line. This does the
> > same thing as a node radio receiving a valid signal would do. For testing
> > you can connect a mic and headphones directly to an UNMODIFIED FOB, go
> into
> > the menu and use the 'K' as a PTT toggle. It is often a good idea to
> check
> > a FOB you are going to modify in this way to make sure it works before
> you
> > go to the trouble of modifying it.
> >
> >
> > *73 Doug*
> >
> > *WA3DSP*
> >
> > *http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*
> >
> >
> > On Tue, Oct 31, 2017 at 7:53 PM, "Josh Hatton via arm-allstar" <
> > arm-allstar at hamvoip.org> wrote:
> >
> >> I read a bit about folks using "Radio-less Nodes"..... what is the
> >> benefits, uses and such for using a node such as this?
> >>
> >> Just learning and curious.
> >>
> >> Tnx
> >> Josh W4ZZK
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