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
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@mailman.ampr.org https://mailman.ampr.org/mailman/listinfo/44net
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@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:
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@mailman.ampr.org https://mailman.ampr.org/mailman/listinfo/44net
44Net mailing list 44Net@mailman.ampr.org https://mailman.ampr.org/mailman/listinfo/44net
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@mailman.ampr.org https://mailman.ampr.org/mailman/listinfo/44net
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@mailman.ampr.org https://mailman.ampr.org/mailman/listinfo/44net
44Net mailing list 44Net@mailman.ampr.org https://mailman.ampr.org/mailman/listinfo/44net .
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@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@mailman.ampr.org https://mailman.ampr.org/mailman/listinfo/44net
44Net mailing list 44Net@mailman.ampr.org https://mailman.ampr.org/mailman/listinfo/44net .
-
Bjorn Pehrson -
David Ranch -
ei4ku＠ei4ku.ampr.org -
K7VE - John -
R P