17 Feb
2021
17 Feb
'21
2:56 p.m.
Hi there
Is there anyone here that uses the NPR modems in the AMPRNET ?
I would like to ask him some questions concerning the Network behave and config of the
Systems
Thanks Forward
Ronen - 4Z4ZQ
http://www.ronen.org
17 Feb
17 Feb
3:40 p.m.
New subject: Using NPR Modem on AMPRNET
hi, yes, i use a pair here for an occasional link from 44.155.16.58
(the shack, folded dipole) to 44.155.16.60 (the car, roof mounted
1/4wave). barefoot, without external amp it works for a couple of miles
well enough to send email, use a text based browser, ssh, etc.
unless carelessly exposing the config page: i don't see an attack surface,
so i have no qualms hooking it up to 44. the mandatory use of the internal
dhcp seems a bit quirky at first, but works reliably. the latest firmware
is a must, or the ethernet will insist on 10mhz-fd only and will not talk
to an auto negotiated 100mhz interface.
latency isn't the hottest, but still way better than ax25 semiduplex.
i haven't observed packetloss -provided there is a good rf signal both
ways.
happy to help further, 73 de stefan, ei4ku
On Wed, 17 Feb 2021, R P via 44Net wrote:
Hi there
Is there anyone here that uses the NPR modems in the AMPRNET ?
I would like to ask him some questions concerning the Network behave and config of the
Systems
Thanks Forward
Ronen - 4Z4ZQ
http://www.ronen.org
_________________________________________
44Net mailing list
44Net(a)mailman.ampr.org
https://mailman.ampr.org/mailman/listinfo/44net
5:45 p.m.
New subject: Using NPR Modem on AMPRNET
Perhaps, with regard to VOIP and such, the issue is jitter more than
latency?
On Wed, Feb 17, 2021 at 7:42 AM zed via 44Net <44net(a)mailman.ampr.org>
wrote:
hi, yes, i use a pair here for an occasional link from
44.155.16.58
(the shack, folded dipole) to 44.155.16.60 (the car, roof mounted
1/4wave). barefoot, without external amp it works for a couple of miles
well enough to send email, use a text based browser, ssh, etc.
unless carelessly exposing the config page: i don't see an attack surface,
so i have no qualms hooking it up to 44. the mandatory use of the internal
dhcp seems a bit quirky at first, but works reliably. the latest firmware
is a must, or the ethernet will insist on 10mhz-fd only and will not talk
to an auto negotiated 100mhz interface.
latency isn't the hottest, but still way better than ax25 semiduplex.
i haven't observed packetloss -provided there is a good rf signal both
ways.
happy to help further, 73 de stefan, ei4ku
On Wed, 17 Feb 2021, R P via 44Net wrote:
--
------------------------------
John D. Hays - K7VE
Kingston, WA
<http://k7ve.org/blog> <http://twitter.com/#!/john_hays>
<http://www.facebook.com/john.d.hays>
Hi there
Is there anyone here that uses the NPR modems in the AMPRNET ?
I would like to ask him some questions concerning the Network behave
and config
of the Systems
Thanks Forward
Ronen - 4Z4ZQ
http://www.ronen.org
_________________________________________
44Net mailing list
44Net(a)mailman.ampr.org
https://mailman.ampr.org/mailman/listinfo/44net
_________________________________________
44Net mailing list
44Net(a)mailman.ampr.org
https://mailman.ampr.org/mailman/listinfo/44net
4:50 p.m.
New subject: Using NPR Modem on AMPRNET ?
Hello Ronen,
My group has deployed an NPR system here in the Bay Area, California
with good success. For various reasons, I put a Raspberry PI with IP
Masquerade front the NPR modem and connected clients to provide some
level of security protections as well as provide a landing page for
users to connect to via TELNET and HTTP for more information about the
service. The service is reliable and I've setup some monitors on the
system as well to see who is connected, etc. We get about 50-53Kbps
using the modulation "20" setting as that's the only legal setting for
HAMs in the United States. Latency is a bit all over the map due to how
the NPR's protocol functions so real time needs like VoIP, etc. won't
work well but everything else works ok.
--David
KI6ZHD
On 02/17/2021 06:56 AM, R P via 44Net wrote:
Hi there
Is there anyone here that uses the NPR modems in the AMPRNET ?
I would like to ask him some questions concerning the Network behave and config of the
Systems
Thanks Forward
Ronen - 4Z4ZQ
http://www.ronen.org
_________________________________________
44Net mailing list
44Net(a)mailman.ampr.org
https://mailman.ampr.org/mailman/listinfo/44net
8:24 p.m.
New subject: Using NPR Modem on AMPRNET ?
Has anyone tested the FDD feature?
bjorn/sa0bxi
On 2021-02-17 17:50, David Ranch via 44Net wrote:
Hello Ronen,
My group has deployed an NPR system here in the Bay Area, California
with good success. For various reasons, I put a Raspberry PI with IP
Masquerade front the NPR modem and connected clients to provide some
level of security protections as well as provide a landing page for
users to connect to via TELNET and HTTP for more information about the
service. The service is reliable and I've setup some monitors on the
system as well to see who is connected, etc. We get about 50-53Kbps
using the modulation "20" setting as that's the only legal setting for
HAMs in the United States. Latency is a bit all over the map due to
how the NPR's protocol functions so real time needs like VoIP, etc.
won't work well but everything else works ok.
--David
KI6ZHD
On 02/17/2021 06:56 AM, R P via 44Net wrote:
Hi there
Is there anyone here that uses the NPR modems in the AMPRNET ?
I would like to ask him some questions concerning the Network behave
and config of the Systems
Thanks Forward
Ronen - 4Z4ZQ
http://www.ronen.org
_________________________________________
44Net mailing list
44Net(a)mailman.ampr.org
https://mailman.ampr.org/mailman/listinfo/44net
_________________________________________
44Net mailing list
44Net(a)mailman.ampr.org
https://mailman.ampr.org/mailman/listinfo/44net
.
22 Feb
22 Feb
9:35 p.m.
New subject: Using NPR Modem on AMPRNET ?
This is off-topic to the AMPR topic but to conclude:
I think this feature was made fully operational in the 06/29/2020
firmware though it's a bit of a hybrid. See page 25 of the NPR Advanced
Guide for more details. I would recommend to post a message on the
HackaDay page and see if Guillaume F4HDK responds. There is also the
New-Packet-Radio(a)groups.io email list as well.
--David
KI6ZHD
On 02/17/2021 12:24 PM, Bjorn Pehrson wrote:
Has anyone tested the FDD feature?
bjorn/sa0bxi
On 2021-02-17 17:50, David Ranch via 44Net wrote:
>
> Hello Ronen,
>
> My group has deployed an NPR system here in the Bay Area, California
> with good success. For various reasons, I put a Raspberry PI with IP
> Masquerade front the NPR modem and connected clients to provide some
> level of security protections as well as provide a landing page for
> users to connect to via TELNET and HTTP for more information about
> the service. The service is reliable and I've setup some monitors on
> the system as well to see who is connected, etc. We get about
> 50-53Kbps using the modulation "20" setting as that's the only legal
> setting for HAMs in the United States. Latency is a bit all over the
> map due to how the NPR's protocol functions so real time needs like
> VoIP, etc. won't work well but everything else works ok.
>
> --David
> KI6ZHD
>
>
> On 02/17/2021 06:56 AM, R P via 44Net wrote:
>> Hi there
>> Is there anyone here that uses the NPR modems in the AMPRNET ?
>> I would like to ask him some questions concerning the Network behave
>> and config of the Systems
>> Thanks Forward
>> Ronen - 4Z4ZQ
>> http://www.ronen.org
>>
>> _________________________________________
>> 44Net mailing list
>> 44Net(a)mailman.ampr.org
>> https://mailman.ampr.org/mailman/listinfo/44net
>
> _________________________________________
> 44Net mailing list
> 44Net(a)mailman.ampr.org
> https://mailman.ampr.org/mailman/listinfo/44net
> .
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5 comments
5 participants
participants (5)
-
Bjorn Pehrson -
David Ranch -
ei4ku＠ei4ku.ampr.org -
K7VE - John -
R P