Hi there
Is there a way to have a Packet Node with Pi (or any other small size solution that will not require a PC) ?
If yes How do I connect TNC (serial port) to PI is the Pi support USB to serial external interface (like the profilic ones) ?
Or (preferred) something can be done to do the TNC on Sound card (can be an External sound card that connect to the USB of the PI)
Please Advice
Thanks Forward
Ronen - 4Z4ZQ
jttp://www.ronen.org
For anyone interested in considering a STA you should go to this site:
https://apps.fcc.gov/oetcf/els/forms/STANotificationPage.cfm
STAs are only good for six months, but they can be extended by filing
another application. The filing fee is $60, and you will need your FRN
and password to file it. It is not a simple process, but it is doable.
You should have a narrative explanation of what you propose to do in
PDF format to upload as an attachment as well as filling out the form
completely.
________________________________
>Is this how STAs now work?
>
>When we were implementing packet radio in Canada in the late seventies,
>American hams claimed that the STA process was slow and difficult, the
>equivalent to getting an act through Congress that was difficult and slow
>
>Was this real at the time? Is it better now?
>
>I may have to go through this to push a new mesh protocol through as STA
>(yah, gotta do my local exams first!) and what to know what I'll be up
>against.
>
>- Richard
>
>
>On 3/4/16 10:30 PM, ve1jot wrote:
>> (Please trim inclusions from previous messages)
>> _______________________________________________
>> +1
>>
>> On 16-03-04 08:16 PM, kd6oat wrote:
>>> (Please trim inclusions from previous messages)
>>> _______________________________________________
>>> Regarding an STA for higher data rates experimentation: I would think a
>>> well written proposal accompanied by the signature of a number of
>>> licensed
>>> operators willing to participate in experiments would go a long way.
>>> Count
>>> me in as one who would be willing to sign on.
>>> Ken - KD6OAT
>>>
>>> On Thu, Mar 3, 2016 at 11:22 AM, Brian Kantor <Brian at ucsd.edu> wrote:
>>>
>>>> (Please trim inclusions from previous messages)
>>>> _______________________________________________
>>>> In the FCC arena, one of the better ways to get technical restrictions
>>>> removed is to apply for and operate under an STA - Special Temporary
>>>> Authority, a document from the FCC that basically allows you to operate
>>>> an exception to the normal rules. Typically the only requirement is
>>>> that you make a good case for it technically and that you write up a
>>>> report afterwards. In the past, STAs have been the basis for
>>>> changes to
>>>> the rules. Someone who writes well may want to consider submitting
>>>> one to
>>>> allow higher data rates based solely on bandwidth and then
>>>> experimenting
>>>> with it.
>>>>
>>>> Another possibility is to apply for a Experimental Radio Service
>>>> license
>>>> which basically allows you to do just about anything if you can make a
>>>> good case for it. They used to be a little expensive and they require
>>>> a written report on what you found out with your experiments but it
>>>> does
>>>> allow nearly anything you can think of.
>>>> - Brian
> Beyond what others have mentioned like the TNC-Pi (nice kit), using a $7
> USB soundcard and Direwolf will provide superior decodes.
Yes, I wonder why on earth they use a hardware AFSK modem chip in that design...
I can see a place for an adapter board that provides PTT keying, possibly isolated
audio interface, etc for the Pi, but it should always just do A/D and D/A conversion
of the audio and leave the processing to software. That works so much better, and
it enables the development of alternative modem designs without having to change
the hardware every time.
Rob
There were some attempts/news a couple years ago to modernize this:
http://www.arrl.org/news/arrl-files-symbol-rate-petition-with-fcchttp://www.arrl.org/news/arrl-s-symbol-rate-petition-nears-top-of-fcc-s-mos…
The problem is it takes a very long time for the FCC to act on pretty
much anything ham radio related.
It took 3 years for the Mototrbo/TDMA rule change.
Prior to that I recall the spread spectrum automatic power control
rule change took about half that.
I agree though, a STA is a good idea to make a case and bring the
issue to the forefront.
>In the FCC arena, one of the better ways to get technical restrictions
>removed is to apply for and operate under an STA - Special Temporary
>Authority, a document from the FCC that basically allows you to operate
>an exception to the normal rules. Typically the only requirement is
>that you make a good case for it technically and that you write up a
>report afterwards. In the past, STAs have been the basis for changes to
>the rules. Someone who writes well may want to consider submitting one to
>allow higher data rates based solely on bandwidth and then experimenting
>with it.
>
>Another possibility is to apply for a Experimental Radio Service license
>which basically allows you to do just about anything if you can make a
>good case for it. They used to be a little expensive and they require
>a written report on what you found out with your experiments but it does
>allow nearly anything you can think of.
>- Brian
>
>
>On Thu, Mar 03, 2016 at 07:42:09PM +0200, Demetre - SV1UY wrote:
>> Not good for US though, "thanks" to FCC's 300baud symbol rate restrictions of HF.
portal.ampr.org and www.portal.ampr.org are listed (as the only hosts in ampr.org) as vulnerable
to the DROWN attack published today. it is not a high-priority issue but it is a good idea to have
a look and fix the software and/or settings.
Rob*
*
High speed packet radio collapsed at 9.6 kbps because hams were no longer
able to hack modems into surplus land mobile radios. For the first time,
one needed full channel equalization and plug and pray no longer worked.
That was pretty much the end of packet radio circa mid 1990's. The only
thing that survived was APRS which is based on cheap land mobile radios, PIC
microcontrollers, and AX25/UI.
Assi kk7kx
-----Original Message-----
From: 44Net [mailto:44net-bounces+assi=kiloxray.com@hamradio.ucsd.edu] On
Behalf Of Mark Phillips
Sent: Wednesday, March 02, 2016 2:19 PM
To: AMPRNet working group <44net(a)hamradio.ucsd.edu>
Subject: Re: [44net] Making Packet Node with Pi ?
(Please trim inclusions from previous messages)
_______________________________________________
According to the TNC-X website, John Hansen claims to be working on a 9K6
modem but that was quite a few years back and nothing has been heard since.
I'd LOVE a 9K6+++ modem but they just don;t seem to be available.
I've looked at quite a few of the old designs that came out of German and
Slovenia back in the late 90's and early 2K's. They are either no longer
available, require an SCC card to provide clocks etc, have no driver support
any more or require firmware which is unavailable.
Whilst the soundcard road is somewhat acceptable, a hardware modem can't be
beat..
Mark
NI2O/G7LTT
A few notes:
1) There is a TNC board for the RPi: http://tnc-x.com/TNCPi.htm and it
supports stacking multiple TNCs on a single RPi. It's a pretty elegant
solution.
2) The RPi has UART pins on the I/O connector. All you need is a RS232 to
LVCMOS level converter. The only disadvantage to that is that you can only
connect a single TNC unless you go to NETROM firmware on the TNCs.
3) Using USB<->RS232 converters should work but do yourself a favor and
avoid any adapter that is based on the Prolific chipset. The number of fake
Prolific devices on the market is unreal and their drivers are very suspect.
Use FTDI based devices as they have done a good job of protecting their IP
and maintaining a stable driver set for Windows and Linux.
Assi kk7kx
-----Original Message-----
From: 44Net [mailto:44net-bounces+assi=kiloxray.com@hamradio.ucsd.edu] On
Behalf Of R P
Sent: Tuesday, March 01, 2016 10:25 PM
To: AMPRNet working group <44net(a)hamradio.ucsd.edu>
Subject: [44net] Making Packet Node with Pi ?
(Please trim inclusions from previous messages)
_______________________________________________
Hi there
Is there a way to have a Packet Node with Pi (or any other small size
solution that will not require a PC) ?
If yes How do I connect TNC (serial port) to PI is the Pi support USB
to serial external interface (like the profilic ones) ?
Or (preferred) something can be done to do the TNC on Sound card (can
be an External sound card that connect to the USB of the PI)
Please Advice
Thanks Forward
Ronen - 4Z4ZQ
jttp://www.ronen.org
Hi there
Is anyone know why the Wiki Page behave different then a regular notepad or Wordpad ?
The problem is mainly when i publish scripts it look different then it look if i see it in a notepad
Please Advice
Thanks Forward
Ronen - 4Z4ZQ
http://www.ronen.org
Ronen Pinchooks (4Z4ZQ) WebSite<http://www.ronen.org/>
www.ronen.orgronen.org (Ronen Pinchooks (4Z4ZQ) WebSite) is hosted by domainavenue.com
> Is making 3Pings to about 400 Gateways worldwide from non AMPR IP to their AMPR ip every 5 minutes consider acceptable thing to do ?
Please do not perform any coninuous monitoring or other probing of any other networks than your own
without the explicit desire and consent of the operators of the other network.
We are blacklisting all sources of unwanted monitoring and probing traffic like research scanners,
shodan.io etc etc and I regularly send opt-out messages to those. Still we get over 1 megabit/s
of such crap all day.
Rob
