Date   

Re: Really basic and stupid question - Dead Pi?

Grover Cleveland
 

I did search for this and saw the responses, thank you. In this case the Pi was tried on two other power supplies, each of which were successfully running Pi3b with the 7" screen. When attached to the suspect Pi however there was not joy.
I have concluded that this Pi is well and truly dead.
73
Grover  K7TP


Re: Really basic and stupid question - Dead Pi?

chuck gelm <rpi4ham@...>
 

On 3/19/20 12:38 PM, Grover Cleveland via Groups.Io wrote:
At some point I put a new distribution in it and had to put an older card back in.

Grover:

?

The distribution is in the micro SD card, not in the RPi.
If your RPi does not boot from a good bootable SD card, it may be broken.
Are you seeing anything on a monitor when power is applied?

Chuck



Re: Really basic and stupid question - Dead Pi?

David Ranch
 


Please use your favorite search engine before posting to the list for help as this is a VERY common error:

   https://www.google.com/search?client=firefox-b-1-e&q=raspberry+pi+blinking+red+led -->
      https://www.raspberrypi.org/forums/viewtopic.php?t=208223

--David
KI6ZHD


On 03/19/2020 09:38 AM, Grover Cleveland via Groups.Io wrote:
I had a spare Pi running my station. At some point I put a new distribution in it and had to put an older card back in.
Now, no matter what card I put in the red activity light just blinks! No green light at all.
Dead Pi?
I'm not going to waste much time on it if it is dead; I'll just buy another.
73 Grover K7TP


Re: Really basic and stupid question - Dead Pi?

Bill AA6BD
 

See https://elinux.org/R-Pi_Troubleshooting

A blinking red light (red is power, green is activity) indicates a power problem.  Check your power supply or try another power supply.
--
Bill AA6BD


Really basic and stupid question - Dead Pi?

Grover Cleveland
 

I had a spare Pi running my station. At some point I put a new distribution in it and had to put an older card back in.
Now, no matter what card I put in the red activity light just blinks! No green light at all.
Dead Pi?
I'm not going to waste much time on it if it is dead; I'll just buy another.
73 Grover K7TP


Re: OK Can I...

James Hertel
 

TNX will look!

On 3/18/2020 1:49 PM, David Ranch wrote:
Hello Jim,

The answer here is very application specific so I'd recommend to ask it on an Allstar email list (if you're running a HamVoIP image.. use their list).  With that said, this topic has been brought up many times and there isn't any one answer as it depends to what on the audio codecs you allow, etc.   I recommend to look in the various archives before posting.  For example, here is one list I'm on that's specific to Allstar on the Raspberry Pi:

   http://lists.hamvoip.org/pipermail/arm-allstar/2020-February/014284.html

--David
KI6ZHD
  


On 03/18/2020 12:21 PM, James Hertel wrote:

OOOP's...

David, KI6ZHD

I have 3 allstar nodes. 47379 / 47428?? and 50625 want to move the 50625 to the other Pi unit. Which will free up the other pi.

All I would need to add is the usb connection to that radio (50625)to the other Pi which has an already a Rf and a virtual node with it.?? (47379 / 47428)

Can this be done with out interfering each unit??? I don't have RF issue currently or even Internet issue if both are operating.

Jim



Re: OK Can I...

David Ranch
 

Hello Jim,

The answer here is very application specific so I'd recommend to ask it on an Allstar email list (if you're running a HamVoIP image.. use their list).  With that said, this topic has been brought up many times and there isn't any one answer as it depends to what on the audio codecs you allow, etc.   I recommend to look in the various archives before posting.  For example, here is one list I'm on that's specific to Allstar on the Raspberry Pi:

   http://lists.hamvoip.org/pipermail/arm-allstar/2020-February/014284.html

--David
KI6ZHD
  


On 03/18/2020 12:21 PM, James Hertel wrote:

OOOP's...

David, KI6ZHD

I have 3 allstar nodes. 47379 / 47428?? and 50625 want to move the 50625 to the other Pi unit. Which will free up the other pi.

All I would need to add is the usb connection to that radio (50625)to the other Pi which has an already a Rf and a virtual node with it.?? (47379 / 47428)

Can this be done with out interfering each unit??? I don't have RF issue currently or even Internet issue if both are operating.

Jim



Re: OK Can I...

James Hertel
 

OOOP's...

David, KI6ZHD

I have 3 allstar nodes. 47379 / 47428?? and 50625 want to move the 50625 to the other Pi unit. Which will free up the other pi.

All I would need to add is the usb connection to that radio (50625)to the other Pi which has an already a Rf and a virtual node with it.?? (47379 / 47428)

Can this be done with out interfering each unit??? I don't have RF issue currently or even Internet issue if both are operating.

Jim

On 3/18/2020 12:11 PM, David Ranch wrote:
Hello Jim,

I wish to hook up 3 nodes to a single Pi... which would eliminate a free up a good Pi.?? Any problems with it?

Um.... what is your definition of a "node"??? Are we talking about Packet Radio??? Maybe an Allstar node??? Oh.. maybe it's a hotspot????? You need to be WAY more specific here

--David
KI6ZHD


Re: OK Can I...

David Ranch
 

Hello Jim,

I wish to hook up 3 nodes to a single Pi... which would eliminate a free up a good Pi.  Any problems with it?

Um.... what is your definition of a "node"?  Are we talking about Packet Radio?  Maybe an Allstar node?  Oh.. maybe it's a hotspot?   You need to be WAY more specific here

--David
KI6ZHD


OK Can I...

James Hertel
 

I wish to hook up 3 nodes to a single Pi... which would eliminate a free up a good Pi.  Any problems with it?

2 are on radios and one is a virtual node.

Since I am Hunkering in Place might as well do something constructive.... JIm n6kmr


Re: Looking for a TNC2PI

Bill WA4OPQ
 

If you need a TNC right away you can get the TNC-pi9k6  Etsy listing

And a new low cost TNC should be available soon: nino tnc


Re: OP 25 on Pi 2B

Matt
 

O.K., I have my dongle plugged in, and found the correct path to the program and was able to start the program and I was rewarded with the following message:
Allocating 15 zero-copy buffers
Failed to allocate zero-copy buffer for transfer 0
Falling back to buffers in userspace
This is followed by several rows of zero's.
In the bottom right corner Frequency 853.925000(0)

This is how I am starting the program

./rx.py --args 'rtl' -N 'LNA:47' -S 2400000 -f 853.9250e6 -o 25000


What do I need to change?

--
Experience is the hardest kind of teacher.  
It gives you the test first and the lesson afterward.


Re: OP 25 on Pi 2B

Matt
 

Thanks, I found the path and the file.


On Sun, Mar 15, 2020 at 1:35 PM John D Hays - K7VE <john@...> wrote:
Learn about the find command.

man find

On Sun, Mar 15, 2020, 12:44 Matt <radioguy123@...> wrote:
I found the article and have op25 installed, but can’t find the directory that it resides in.   I guess this is part of the fun doing something new. 
--
Experience is the hardest kind of teacher.  
It gives you the test first and the lesson afterward.



--
Experience is the hardest kind of teacher.  
It gives you the test first and the lesson afterward.


Re: OP 25 on Pi 2B

 

Learn about the find command.

man find

On Sun, Mar 15, 2020, 12:44 Matt <radioguy123@...> wrote:
I found the article and have op25 installed, but can’t find the directory that it resides in.   I guess this is part of the fun doing something new. 
--
Experience is the hardest kind of teacher.  
It gives you the test first and the lesson afterward.


Re: OP 25 on Pi 2B

Matt
 

I found the article and have op25 installed, but can’t find the directory that it resides in.   I guess this is part of the fun doing something new. 
--
Experience is the hardest kind of teacher.  
It gives you the test first and the lesson afterward.


Re: OP 25 on Pi 2B

David Lamer
 

I am using a PI 2B running OP 25 . Found OP 25 for dummies on the internet to set mine up. 
Good luck.




Dave
Cell : 616-836-1214

On Mar 15, 2020, at 1:25 PM, Matt <radioguy123@...> wrote:

I was wondering if a Pi 2b will run Op 25?  If so are there any easy to follow instructions?


Re: OP 25 on Pi 2B

Matt
 

I forgot to add that the pi is running the latest version of Raspbian Buster.

--
Experience is the hardest kind of teacher.  
It gives you the test first and the lesson afterward.


OP 25 on Pi 2B

Matt
 

I was wondering if a Pi 2b will run Op 25?  If so are there any easy to follow instructions?


Re: Solar APRS digipeater #networking

Ray Wells
 

Looks like you're on the right track but given that around 3.0-3.5kHz deviation has long been recommended for packet you might think about using wideband rx for just in case. Do you have any way of looking at the packet audio going to the HT to be sure there isn't an undesirable component sneaking in?

It's not possible yet to rule out a faulty batch of modules so good luck with any replacements.

Ray vk2tv

On 14/3/20 9:40 am, John Tetreault (WA1OKB) wrote:
I know my APRS ht is transmitting narrow band, but I had considered that possibility and tried setting the 818v module to wide band just in case... Same result.

It truly is a mystery at this point.

Worst case, the guy who makes the module has offered to ship me 2 new ones on Monday....so if it is a case of them somehow being defective that should address it... Meanwhile I keep tinkering over the weekend.


On Fri, Mar 13, 2020, 6:33 PM Ray Wells <vk2tv@exemail.com.au <mailto:vk2tv@exemail.com.au>> wrote:

John,

Somebody else touched on deviation, and what you described is
typical of
the signal being over deviated for the rx module. Could it be that
the
module is configured for narrow band (nominally 2.5kHz) rx while your
test tx is sending wideband (nominally 5kHz) deviation? That you can
hear a voice modulated signal points to an audio level problem for
packet audio. Can you reduce the audio level going to the HT? Do you
have an oscilloscope so you can look at the audio going into the HT?


HTH
Ray vk2tv



On 14/3/20 9:01 am, John Tetreault (WA1OKB) wrote:
> *no, you're misunderstand.... Transmitting works fine... I can send
> successful APRS packets with this module all day, no problem.
> *
> Its on the RECEIVE side that I'm having trouble... The module has
> squelch levels of 0-8.  I've tried with 0 (wide open, no
squelch) and
> the lowest setting of 1 with the same result either way.
>
> So, what happens... For testing purposes, I connected a small
> amplified speaker into the 818v modules audio out port.... Now,
if I
> key up my HT and talk, my voice is heard loud and clear coming
out of
> the 818v receive speaker.... If I send an APRS packet from my
HT....
> You can hear the open carrier begin.... As soon as the APRS data
> "squawk" begins... Receive mutes itself... And unmutes as soon
as the
> APRS pack is done.
>
> It has an LED that lights when squelch is open...and I can watch
it,
> light comes on as soon as the HT starts transmitting, and I can
hear
> the open carrier on the receive speaker.. At the split second the
> packet data begins light goes off, and no audio out of the receive
> speaker, once the packet data ends the light comes back on, and I
> again hear the open carrier until the HT transmission ends and the
> light goes off... So the receiver is fine with voice, but as
soon as
> an APRS data packet comes over it just decides, "nope, I don't
want to
> listen to that" and mutes itself.
>
> Now... Oddly enough, if I try this same test with an 818U UHF
module
> with a squelch value of 1. (so same exact settings just different
> band)  it works perfectly.... No self muting at all.... and
Direwolf
> receives and decodes the packet.
>





Re: Solar APRS digipeater #networking

John Tetreault (WA1OKB)
 

I know my APRS ht is transmitting narrow band, but I had considered that possibility and tried setting the 818v module to wide band just in case... Same result.

It truly is a mystery at this point.

Worst case, the guy who makes the module has offered to ship me 2 new ones on Monday....so if it is a case of them somehow being defective that should address it... Meanwhile I keep tinkering over the weekend.


On Fri, Mar 13, 2020, 6:33 PM Ray Wells <vk2tv@...> wrote:
John,

Somebody else touched on deviation, and what you described is typical of
the signal being over deviated for the rx module. Could it be that the
module is configured for narrow band (nominally 2.5kHz) rx while your
test tx is sending wideband (nominally 5kHz) deviation? That you can
hear a voice modulated signal points to an audio level problem for
packet audio. Can you reduce the audio level going to the HT? Do you
have an oscilloscope so you can look at the audio going into the HT?


HTH
Ray vk2tv



On 14/3/20 9:01 am, John Tetreault (WA1OKB) wrote:
> *no, you're misunderstand.... Transmitting works fine... I can send
> successful APRS packets with this module all day, no problem.
> *
> Its on the RECEIVE side that I'm having trouble... The module has
> squelch levels of 0-8.  I've tried with 0 (wide open, no squelch) and
> the lowest setting of 1 with the same result either way.
>
> So, what happens... For testing purposes, I connected a small
> amplified speaker into the 818v modules audio out port.... Now, if I
> key up my HT and talk, my voice is heard loud and clear coming out of
> the 818v receive speaker.... If I send an APRS packet from my HT....
> You can hear the open carrier begin.... As soon as the APRS data
> "squawk" begins... Receive mutes itself... And unmutes as soon as the
> APRS pack is done.
>
> It has an LED that lights when squelch is open...and I can watch it,
> light comes on as soon as the HT starts transmitting, and I can hear
> the open carrier on the receive speaker.. At the split second the
> packet data begins light goes off, and no audio out of the receive
> speaker, once the packet data ends the light comes back on, and I
> again hear the open carrier until the HT transmission ends and the
> light goes off... So the receiver is fine with voice, but as soon as
> an APRS data packet comes over it just decides, "nope, I don't want to
> listen to that" and mutes itself.
>
> Now... Oddly enough, if I try this same test with an 818U UHF module
> with a squelch value of 1. (so same exact settings just different
> band)  it works perfectly.... No self muting at all.... and Direwolf
> receives and decodes the packet.
>




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