Re: Help FOR DSTAR DD - UPDATE
--- In D-STAR_23cm@..., "John" <john@...> wrote:
It's really much simpler than this, just make sure you do not provide NAT service from 10.x.x.x to the Internet. NAT takes the 10.x.x.x address and replaces it with the WAN IP address in your router and keeps track of the ports and remote address used, it then uses that information to convert incoming traffic (from the Internet) back to a 10.x.x.x address. If NAT is turned off then the traffic neither leaves with the WAN IP address and returning traffic would simply be dropped.
A little correction, you do still need to configure NAT for 10.0.0.2/32 (or maybe /31), since the gateway (at 10.0.0.2) still needs to talk to the Internet, for D-STAR routing to other gateways. If I understand how DD routing works, it uses the D-STAR callsign routing to get the encapsulated Ethernet packet to the remote gateway and ultimately to the remote ID-1 -- access to the Internet happens when the gateway itself is the destination and it drops the packet onto the local Ethernet directed towards the IP gateway at 10.0.0.1 and the NAT magic allows it to communicate to systems on the Internet (as opposed to other DD stations which are connected by D-STAR routing). If someone has definitive information otherwise, please let us know - these suggestions are based on my observations.
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It's really much simpler than this, just make sure you do not provide NAT service from 10.x.x.x to the Internet. NAT takes the 10.x.x.x address and replaces it with the WAN IP address in your router and keeps track of the ports and remote address used, it then uses that information to convert incoming traffic (from the Internet) back to a 10.x.x.x address. If NAT is turned off then the traffic neither leaves with the WAN IP address and returning traffic would simply be dropped.
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--- In D-STAR_23cm@..., "Woodrick, Ed" <ewoodrick@...> wrote:
I believe that what you would need to do is to block outbound access on the router to all 10. Addresses except 10.0.0.X. This should keep DSTAR users from accessing the Internet.
You can place an email (or any server) on the local 10.0.0.x subnet to allow the local D-STAR DD users to access.
From: D-STAR_23cm@... [mailto:D-STAR_23cm@...] On Behalf Of Mark Thompson
Sent: Sunday, January 23, 2011 10:11 PM
To: D-STAR_23cm@...
Cc: maurizio.spanio@...
Subject: [D-STAR_23cm] Fwd: Help FOR DSTAR DD
Perhaps we can help Maurizio with his questions below.
I've copied him on this email & invited him to join the group.
73, Mark, WB9QZB
-----Original Message-----
From: maurizio spanio <maurizio.spanio@...>
To: wb9qzb@...
Sent: Sun, Jan 23, 2011 9:55 am
Subject: Help FOR DSTAR DD
Hello Mark, Maurizio and manage iz3cyw are some repeaters Italians.
I also have some form DD ICOM connected to repeaters in the Veneto.
In Italy it is not allowed to access the internet through the wireless network.
I want to create an intranet DSTAR with some services only for amateurs, but I'm notnetworking expert.
I have some things to ask:
- Do you know how to drive traffic to a DD and intranet to the Internet?
- Do you know how to activate a server for intranet email only DSTAR?
Thanks for the help.
73 de iz3cyw
Maurizio
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I'm afraid that will not work because you have to have the 10. address
range available for other DD nodes and if you want to do any kind of
local based services.? My suggestion would be to put filters in the
Internet Router blocking everything EXCEPT 10.0.0.0 / 8 address
range.?? Another way would be to block DNS queries TCP/UDP 53
outside of Gateway PC.? This way, when you try to browse to an
address it will not go anywhere.
After the SuperBowl I'll set up a test here on the 1.2G system I have for
a test here at the house and find and document a way to handle just this
type of scenario.
Gerry
W5MAY
At 10:08 PM 2/1/2011, Woodrick, Ed wrote:
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I believe that what you would
need to do is to block outbound access on the router to all 10. Addresses
except 10.0.0.X. This should keep DSTAR users from accessing the
Internet.
You can place an email (or any server) on the local 10.0.0.x subnet to
allow the local D-STAR DD users to access.
?
?
?
From: D-STAR_23cm@...
[
mailto:D-STAR_23cm@...] On Behalf Of Mark
Thompson
Sent: Sunday, January 23, 2011 10:11 PM
To: D-STAR_23cm@...
Cc: maurizio.spanio@...
Subject: [D-STAR_23cm] Fwd: Help FOR DSTAR DD
?
?
Perhaps we can help Maurizio with his questions below.
?
I've copied him on this email & invited him to join the group.
?
73, Mark, WB9QZB
?
-----Original Message-----
From: maurizio spanio
To: wb9qzb@...
Sent: Sun, Jan 23, 2011 9:55 am
Subject: Help FOR DSTAR DD
Hello Mark, Maurizio and manage iz3cyw are some repeaters
Italians.
I also have some form DD ICOM connected to repeaters in the
Veneto.
In Italy it is not allowed to access the internet through the wireless
network.
I want to create an intranet DSTAR with some services only for amateurs,
but I'm notnetworking expert.
I have some things to ask:
- Do you know how to drive traffic to a DD and intranet to the
Internet?
- Do you know how to activate a server for intranet email only
DSTAR?
Thanks for the help.
73 de iz3cyw
Maurizio
?
|
I believe that what you would need to do is to block outbound access on the router to all 10. Addresses except 10.0.0.X. This should keep DSTAR users from accessing
the Internet.
You can place an email (or any server) on the local 10.0.0.x subnet to allow the local D-STAR DD users to access.
?
?
?
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From: D-STAR_23cm@... [mailto:D-STAR_23cm@...]
On Behalf Of Mark Thompson
Sent: Sunday, January 23, 2011 10:11 PM
To: D-STAR_23cm@...
Cc: maurizio.spanio@...
Subject: [D-STAR_23cm] Fwd: Help FOR DSTAR DD
?
?
Perhaps we can help Maurizio with his questions below.?
I've copied him on this email & invited him to join the group.?
?
-----Original Message-----
From: maurizio spanio
To: wb9qzb@...
Sent: Sun, Jan 23, 2011 9:55 am
Subject: Help FOR DSTAR DD
Hello?Mark,?Maurizio?and?manage?iz3cyw?are?some?repeaters?Italians.
I also have?some?form?DD?ICOM?connected?to?repeaters?in the Veneto.
In?Italy?it is not?allowed to?access the?internet?through?the?wireless network.
I want to create?an?intranet?DSTAR?with?some?services?only for?amateurs,?but I'm notnetworking expert.
I have?some?things?to?ask:
-?Do you know?how?to?drive traffic?to?a?DD?and?intranet?to the Internet?
-?Do you know?how to activate?a?server?for?intranet?email?only?DSTAR?
Thanks?for?the?help.
73?de?iz3cyw
Maurizio
?
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Perhaps we can help Maurizio with his questions below.?
I've copied him on this email & invited him to join the group.?
73, Mark, WB9QZB?
-----Original Message-----
From: maurizio spanio
To: wb9qzb@...
Sent: Sun, Jan 23, 2011 9:55 am
Subject: Help FOR DSTAR DD
Hello?Mark,?Maurizio?and?manage?iz3cyw?are?some?repeaters?Italians.
I also have?some?form?DD?ICOM?connected?to?repeaters?in the Veneto.
In?Italy?it is not?allowed to?access the?internet?through?the?wireless network.
I want to create?an?intranet?DSTAR?with?some?services?only for?amateurs,?but I'm notnetworking expert.
I have?some?things?to?ask:
-?Do you know?how?to?drive traffic?to?a?DD?and?intranet?to the Internet?
-?Do you know?how to activate?a?server?for?intranet?email?only?DSTAR?
Thanks?for?the?help.
73?de?iz3cyw
Maurizio
|
Automatic Reply Function?
Does the ID-1 have an Automatic Reply Function like the 2820?
If a station specifies my call sign, my ID-1 is set automatically to reply to that call sign? Looking at the manual it appears to be there, but it isn't clear. It's difficult to test by myself.
Thanks, Arnold
KQ6DI
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Re: New file uploaded to D-STAR_23cm
Thanks for posting Mark.
Looking at this file on Page 6 of 23 I do not agree on the DHCP comment. It DHCP appears to be passed just timing is perhaps somewhat messed up. At the Marine Corps Marathon we have discovered that the sometimes our computers appear to get dhcp settings just fine. Have not done lots of testing since we tell folks what ip addresses to use. Just some of the operators forget to set then discover all works fine.
73, tom n4zpt
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On 1/15/2011 3:56 PM, D-STAR_23cm@... wrote:
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Re: RP-2D & ID-1 Sensitivity in DD mode
The width of the signal has a huge impact on the distance.? A 10w CW vs PSK vs FM vs DD vs TV signal have hugged differences in coverage. Why else do you think
that TV stations run megawatts?
?
BUT, the coverage isn’t necessarily as bad as one may think. During a recent exercise, we were sending DD from about 50 miles away, line of sight. And I mean
line of sight because the end point was an airplane.? Calculations indicate that with the existing transmit and receiver performance, and ?a better than lossy antenna/feedline solution, that the coverage could be up to about 100 miles. As I said, we know that
it made it to 50 and the signal was still strong.
?
KJ4VO is able to do his commute on 1.2 up to about 25 miles away from the repeater.
?
Basically, if you can see the tower, you can talk to it.
?
Ed WA4YIH
?
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From: D-STAR_23cm@... [mailto:D-STAR_23cm@...]
On Behalf Of Mark
Sent: Sunday, January 09, 2011 3:20 PM
To: D-STAR_23cm@...
Subject: [D-STAR_23cm] Re:RP-2D & ID-1 Sensitivity in DD mode
?
?
At a recent D-STAR forum someone in the audience contended the sensitivity of the RP-2D was poor and that is why DD range is 2/3 of DV.
I didn't ask them how they knew this, but I did mention that DD is a wide-band signal which could account for some of the range reduction.
They wanted to know if anyone has been able to improve the sensitivity of a RP-2D & DD through a pre-amp or another means?
73, Mark, WB9QZB
--- In D-STAR_23cm@..., "michelbarbeau2002" wrote:
>
> According to Icom's specification of the ID-1, the sensitivity in DD mode is less 1.58uV (at a BER of 1%). With an input impedance of 50 Ohms, converted in dBm, it is -103 dBm. This looks excellent on paper.
>
> Has anyone done an independent sensitivity measurement of the ID-1 in DD mode? Please let me know if you have any data to share. Thanks!
>
> Michel, VE3EMB
>
|
Re: RP-2D & ID-1 Sensitivity in DD mode
100W @ 23cm? Maybe try 10W. But indeed turnaround is going to be a big issue.
?
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From: D-STAR_23cm@... [mailto:D-STAR_23cm@...]
On Behalf Of beamar@...
Sent: Sunday, January 09, 2011 3:32 PM
To: D-STAR_23cm@...
Subject: Re: [D-STAR_23cm] Re:RP-2D & ID-1 Sensitivity in DD mode
?
?
The addition of a DEMI preamp to our 23 cm DV repeater made a huge difference. I would assume the addition of a preamp to the Data box would make a similar difference. A power amp on
the Data box would sure be nice too. The problem is how to switch the pream and/or power amp in and out. I can't believe there is a vacuum relay that would be fast enough. A PIN diode switch to handle 100 W @ 23 cm, with sufficient isolation to keep from blowing
the preamp, would be pricey. How to key it in and out is not readily apparent, either. I would sure like to add both a preamp and a power amp to our Data box. But, it looks quite challenging and expensive. Anybody out there done it or have some ideas?
Buddy Morgan WB4OMG
KJ4ACN Trustee
Lakeland, FL
|
Re: RP-2D & ID-1 Sensitivity in DD mode
At a recent D-STAR forum someone in the audience contended the sensitivity of the RP-2D was poor and that is why DD range is 2/3 of DV.
I didn't ask them how they knew this, but I did mention that DD is a wide-band signal which could account for some of the range reduction.
They wanted to know if anyone has been able to improve the sensitivity of a RP-2D & DD through a pre-amp or another means?
73, Mark, WB9QZB
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--- In D-STAR_23cm@..., "michelbarbeau2002" <barbeau@...> wrote:
According to Icom's specification of the ID-1, the sensitivity in DD mode is less 1.58uV (at a BER of 1%). With an input impedance of 50 Ohms, converted in dBm, it is -103 dBm. This looks excellent on paper.
Has anyone done an independent sensitivity measurement of the ID-1 in DD mode? Please let me know if you have any data to share. Thanks!
Michel, VE3EMB
|
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ID-RP2C Interface Implementation Document released!
ID-RP2C Interface Implementation Document released!
? ? Posted by: "VK5ZEA"?michaelcarey@...?michaelcarey69
? ? Date: Fri Jan 7, 2011 11:39 pm ((PST))
Hi
Everybody,
After long last, I have finished(I hope) and have presented my ID-RP2C Interface Implementation Document for general release.
The prototype is what you see in these?YouTube videos?:-
You can find ID-RP2C Interface v1.1.pdf in the Files section of this group. Look in the ID-RP2C Interface folder.
I have also uploaded a .jpg of the schematic as well. (ATTACHED TO THIS MESSAGE AS WELL).?
Several of these interfaces have been built and are
working well. Dan KC8ZUM is successfully using two at the K8BIG D-Star repeater in Cincinnati.
If you have any questions, please don't hesitate to email me, or give me a call via D-Star on VK5REX B/C or wherever you hear me!(make sure you take the time difference into account, I'm 10.5 hours ahead of UTC)
Enjoy!
Michael.
VK5ZEA?
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Re: RP-2D & ID-1 Sensitivity in DD mode
The addition of a DEMI preamp to our 23 cm DV repeater made a huge difference. I would assume the addition of a preamp to the Data box would make a similar difference. A power amp on the Data box would sure be nice too. The problem is how to switch the pream and/or power amp in and out. I can't believe there is a vacuum relay that would be fast enough. A PIN diode switch to handle 100 W @ 23 cm, with sufficient isolation to keep from blowing the preamp, would be pricey. How to key it in and out is not readily apparent, either. I would sure like to add both a preamp and a power amp to our Data box. But, it looks quite challenging and expensive. Anybody out there done it or have some ideas?
Buddy Morgan WB4OMG
KJ4ACN Trustee
Lakeland, FL
|
D-STAR Repeaters Available - New as Came Be
Ho-Ho-Ho and hello,
Still available for X-mas (New Years?) delivery are two(2) new D-Star
repeater controllers and three(3) 1.2Ghz repeaters (2DD, 1FM) at
great end-of-year prices including 2 copies of licensed
G2 Gateway software for the controllers. All are not used except
for show and tell (not powered up) demos at ham clubs and in a nice
19-in rack-roller-wheel travel case. Pictures attached.
Reasonable offers entertained.
Local deliver free.
Season greetings,
Paul
N3UD
610-613-0610
p.s.
Also available a high quality new RX-TX 1.2Ghz duplexer.
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John Hays - K7VE / WRJT-215