Hi, I’ve been lurking on this list for quite some time and I am extremely interested in setting up a simplex node to start playing with this. What exactly will I need besides the obvious(radio, computer, etc), I am little confused on what type of FXS card I will need just for a single radio, all the ones I have seen are fairly pricey. I will then need an ARIB board to interface the radio to the FXS card correct?
tnx and 73’s
Stephen
N1VLV
John,
You will need the following in addition to what you have already listed:
1. A digium TDM400 with one FXS daughterboard. Digium part number TDM10B. This
is going to cost around $140.00. There is a Chinese knockoff of the TDM400p
part number A400P10 for $93.00 which we haven't tested available from
openvox: http://www.openvox.com.cn/products_detail.php?genre_id=9&id=27\.
2. One ARIB board. This board can be built for around $60-$70. Board blanks
are available from us for $10 each plus shipping.
3. A modular to modular to modular telephone cable.
We would like to suggest you plan to build a full-duplex system as this will
provide much more flexibility than a simplex node.
BTW: We are working on a less expensive solution which requires 2 of
inexpensive X100p FXO cards (around $10-$20) plus a modified ARIB, but it
isn't ready yet as it requires either changes to the ARIB, or an addtional
external board.
Steve.
On Tuesday 06 February 2007 07:43, Stephen Brown Jr wrote:
Hi, I've been lurking on this list for quite some time and I am extremely
interested in setting up a simplex node to start playing with this. What
exactly will I need besides the obvious(radio, computer, etc), I am little
confused on what type of FXS card I will need just for a single radio, all
the ones I have seen are fairly pricey. I will then need an ARIB board to
interface the radio to the FXS card correct?tnx and 73's
Stephen
N1VLV
We would like to suggest you plan to build a full-duplex system as this will provide much more flexibility than a simplex node.
That brings up another interesting point that I failed to mention in my original posting. I am a little confused as to the definition of full duplex. When I think full duplex, I think that of like a telephone conversation where the caller and receiver can both talk at the same time. How exactly does this work in App_rpt? I only have one radio to work with with one simplex frequency, is this not intended for this type of setup?
BTW: We are working on a less expensive solution which requires 2 of inexpensive X100p FXO cards (around $10-$20) plus a modified ARIB, but it isn’t >ready yet as it requires either changes to the ARIB, or an addtional external board.
That sounds like a more economical solution. Do you plan on having this anytime soon?
One of the biggest things that attracted me to this project was openness. I think echolink and IRLP are excellent systems, but too closed and proprietary in nature which prohibits experimentation. I hope this project goes far!
73’s and tnx
Stephen
N1VLV
On 2/6/07, Steve Rodgers <hwstar@rodgers.sdcoxmail.com > wrote:
John,
You will need the following in addition to what you have already listed:
- A digium TDM400 with one FXS daughterboard. Digium part number TDM10B. This
is going to cost around $140.00. There is a Chinese knockoff of the TDM400p
part number A400P10 for $93.00 which we haven’t tested available fromopenvox: http://www.openvox.com.cn/products_detail.php?genre_id=9&id=27.
- One ARIB board. This board can be built for around $60-$70. Board blanks
are available from us for $10 each plus shipping.
- A modular to modular to modular telephone cable.
We would like to suggest you plan to build a full-duplex system as this will
provide much more flexibility than a simplex node.BTW: We are working on a less expensive solution which requires 2 of
inexpensive X100p FXO cards (around $10-$20) plus a modified ARIB, but it
isn’t ready yet as it requires either changes to the ARIB, or an addtionalexternal board.
Steve.
On Tuesday 06 February 2007 07:43, Stephen Brown Jr wrote:
Hi, I’ve been lurking on this list for quite some time and I am extremely
interested in setting up a simplex node to start playing with this. Whatexactly will I need besides the obvious(radio, computer, etc), I am little
confused on what type of FXS card I will need just for a single radio, all
the ones I have seen are fairly pricey. I will then need an ARIB board tointerface the radio to the FXS card correct?
tnx and 73’s
Stephen
N1VLV
App_rpt mailing list
App_rpt@lists.illiana.net
http://lists.illiana.net/mailman/listinfo/app_rpt
Stephen,
See my responses below:
> We would like to suggest you plan to build a full-duplex system as this
will provide much more flexibility than a simplex node.
That brings up another interesting point that I failed to mention in my
original posting. I am a little confused as to the definition of full
duplex. When I think full duplex, I think that of like a telephone
conversation where the caller and receiver can both talk at the same time.
How exactly does this work in App_rpt? I only have one radio to work with
with one simplex frequency, is this not intended for this type of setup?
Allthough simplex nodes can be deployed, they suffer from a number of
drawbacks. The major deficeit is break-in capability. If you are listening to
a busy QSO on a linked system with a bunch of nodes connected, a simplex
node cannot be used to break in to a that QSO since your simplex radio will
always be transmitting and your receiver will be disabled. In addition, you
will not be able to use remote bases on the system if they get tuned to busy
channels. (This is a real problem with HF remote bases), and you'll be locked
out of disconnecting from the remote base. Another minor drawback is that is
is much more difficult to get the audio levels adjusted on a simplex node
since you can't adjust transmit and receive levels at the same time.
Full duplex will require two radios and a duplexer. (you will be essentially
be building a repeater). Being able to transmit and receive at the same time
from a user radio is not the primary advantage of building a full duplex
node, but the added benefit to doing it this way is that you don't have to
wait for any carrier drops before talking or breaking into an existing QSO,
and on a linked system such as allstar link, this full duplex is really the
only way to go.
>BTW: We are working on a less expensive solution which requires 2 of
inexpensive X100p FXO cards (around $10-$20) plus a modified ARIB, but it
isn't >ready yet as it requires either changes to the ARIB, or an addtional
external board.That sounds like a more economical solution. Do you plan on having this
anytime soon?
We can't promise a delivery dats on this, but it is something we are persuing.
One of the biggest things that attracted me to this project was openness. I
think echolink and IRLP are excellent systems, but too closed and
proprietary in nature which prohibits experimentation. I hope this project
goes far!
Yep.
On Tuesday 06 February 2007 10:06, Stephen Brown Jr wrote:
73's and tnx
Stephen
N1VLVOn 2/6/07, Steve Rodgers <hwstar@rodgers.sdcoxmail.com> wrote:
> John,
>
> You will need the following in addition to what you have already listed:
>
> 1. A digium TDM400 with one FXS daughterboard. Digium part number TDM10B.
> This
> is going to cost around $140.00. There is a Chinese knockoff of the
> TDM400p
> part number A400P10 for $93.00 which we haven't tested available from
> openvox: http://www.openvox.com.cn/products_detail.php?genre_id=9&id=27\.
>
> 2. One ARIB board. This board can be built for around $60-$70. Board
> blanks
> are available from us for $10 each plus shipping.
>
> 3. A modular to modular to modular telephone cable.
>
> We would like to suggest you plan to build a full-duplex system as this
> will
> provide much more flexibility than a simplex node.
>
>
> BTW: We are working on a less expensive solution which requires 2 of
> inexpensive X100p FXO cards (around $10-$20) plus a modified ARIB, but it
> isn't ready yet as it requires either changes to the ARIB, or an
> addtional external board.
>
> Steve.
>
> On Tuesday 06 February 2007 07:43, Stephen Brown Jr wrote:
> > Hi, I've been lurking on this list for quite some time and I am
>
> extremely
>
> > interested in setting up a simplex node to start playing with this.
> > What exactly will I need besides the obvious(radio, computer, etc), I
> > am
>
> little
>
> > confused on what type of FXS card I will need just for a single radio,
>
> all
>
> > the ones I have seen are fairly pricey. I will then need an ARIB board
>
> to
>
> > interface the radio to the FXS card correct?
> >
> > tnx and 73's
> > Stephen
> > N1VLV
>
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