Date   

Re: New digital mode PS-18 (HF pager) from DXsoft and Radial, or we invented APRS again :-)

Chiefsfan2
 

Ok Andy, how does this weekend look for you?

On Jul 1, 2020, 17:50 -0500, Andrew OBrien <k3ukandy@...>, wrote:
I’ll experiment with it 

Andy K3UK 


On Jul 1, 2020, at 6:40 PM, Chiefsfan2 <chiefsfan2@...> wrote:


Anyone on the group want to experiment with hfpager?
On Jun 5, 2020, 03:24 -0500, Kristoff Bonne <kristoff@...>, wrote:
Serge,


On 3/06/2020 19:31, Sergei Podstrigailo wrote:
KB> I can't speak for John, but I think the question was about a port
of the
KB> complete stack (encoder and decoder) to linux single-board computer or a
KB> MCU or MCU/FPGA.

We are working on full "Hardware pager" with embedded transceiver, STM32 controller and e-Ink display too...
Versions for small Linux systems probably will be made also, but some later...
I hope that's will not be a 'just install and use'  box. :-(


These kind of devices almost killed the spirit of amateur-radio.
Thankfully the maker/hacker-community came to save us.


73
kristoff - ON1ARF




Re: New digital mode PS-18 (HF pager) from DXsoft and Radial, or we invented APRS again :-)

Andrew OBrien
 

I’ll experiment with it 

Andy K3UK 


On Jul 1, 2020, at 6:40 PM, Chiefsfan2 <chiefsfan2@...> wrote:


Anyone on the group want to experiment with hfpager?
On Jun 5, 2020, 03:24 -0500, Kristoff Bonne <kristoff@...>, wrote:
Serge,


On 3/06/2020 19:31, Sergei Podstrigailo wrote:
KB> I can't speak for John, but I think the question was about a port
of the
KB> complete stack (encoder and decoder) to linux single-board computer or a
KB> MCU or MCU/FPGA.

We are working on full "Hardware pager" with embedded transceiver, STM32 controller and e-Ink display too...
Versions for small Linux systems probably will be made also, but some later...
I hope that's will not be a 'just install and use'  box. :-(


These kind of devices almost killed the spirit of amateur-radio.
Thankfully the maker/hacker-community came to save us.


73
kristoff - ON1ARF




Re: New digital mode PS-18 (HF pager) from DXsoft and Radial, or we invented APRS again :-)

Chiefsfan2
 

Anyone on the group want to experiment with hfpager?

On Jun 5, 2020, 03:24 -0500, Kristoff Bonne <kristoff@...>, wrote:
Serge,


On 3/06/2020 19:31, Sergei Podstrigailo wrote:
KB> I can't speak for John, but I think the question was about a port
of the
KB> complete stack (encoder and decoder) to linux single-board computer or a
KB> MCU or MCU/FPGA.

We are working on full "Hardware pager" with embedded transceiver, STM32 controller and e-Ink display too...
Versions for small Linux systems probably will be made also, but some later...
I hope that's will not be a 'just install and use'  box. :-(


These kind of devices almost killed the spirit of amateur-radio.
Thankfully the maker/hacker-community came to save us.


73
kristoff - ON1ARF




Re: study material to teach hams on datacommunication

Gary McGehee
 

Kristoff,  try these 2 sites : www.complextoreal.com/tutorials
                                           Signals Intelligence Group on Facebook


Re: study material to teach hams on datacommunication

Kristoff Bonne
 

Hi Richard,


I had a number of discussion on this issue with a people on this.

There actually is a pretty good explanation for this. In essence, it is linked to the fact that the state of technology today has moved to a point where it has greatly exceeded the knowledge you need for your hamradio license.


First,
When I explain amateur-radio and the requirement for the exam to people who are interested in Amateur-radio (e.g. at the FOSDEM conference in Brussels where we have an amateur-radio infobooth), I usually compare it to a drivers-licence.
The reason the drivers-license exists is that you drive with your car on the public road together with other people, so you need to have some "proven" basic skills to drive your car so you do not crash in other people or hurt yourself.

The same thing applies for the amateur-radio license, except that it applies to the "radio-communication spectrum" instead of the public road, .. and the amateur license (at least the "full" license) also allows you not only to drive a car, but also to build one (i.e. a basic model of a car) yourself.

Second,
If you look at the courses given in the radioclubs and most of the books you find in the bookshops, they have a very clear goal: allow you to get your ham-license. This means the topics of these courses are the same as the topics of the exams: ... the basic model of a car.



Now, what is the problem?

The issue here is that any new modern is now a very far cry from that "basic model car" I mentioned above.
Modern cars are full of electronics, sensors, all kind of microprocessors running very complex applications to hard-Real-time Operating-systems, CAM-bus to connect it all together, an android-based entertainment system, radars, internet-connectivity, etc.


The same applies for radio-technology.
Radios these days are based in DSP and SDR, include embedded microcontrollers, run algorithms on dedicated FPGAs. Radio-amateur devices include arduino's or embedded linux single-board computers, connect to back-end infrastructure on the net. We use software-tools like antenna-simulation software, electronics simulation tools, PCB design tools, math tools, SDR frameworks, etc. etc.

In addition to that, a lot of these technology depends on a level of math that go far beyond what most hams are used to.


So there is a problem!

In essence, the the basic idea for amateur-radio was been like this:

- the "base knowledge" for all ham-operators is what you need to know to pass the exam
- Once you have your license, it is the club and fellow hams in these clubs (presentations, DIY-building projects, contests, fielddays, ... ) that are the way to go from there, learn more on the things your are interested in.


But as technology has advanced so fast and has become so complex (which also resulted in amateur-radio hobby split in tens of subhobbies), that "the radioclub is where you talk to fellow-minded hams"-model does not really work any-more, or -at least- not for the most advanced parts of the hobby.




So, what is the solution? Make the exam more difficult?
I don't know. OK, A technician working on a car needs to know what sensor-board of the car does what and how it connects to the rest of the car, but can you require him/her to explain how the embedded code on the microcontroller on that PCB interfaces with the CAM-bus and handles interrupts of incoming packets over that bus?


The same thing applies for the amateur-radio exam:
Can you require a candidate licensed ham to explain how to write arduino-code to interface an arduino to an FM-transceiver to send out POCSAG paging messages, ... just to get their amateur-radio license?
That is -I think- not what the exam is about. As mentioned. The exam is there to prove you know how to operate a radio, design a basic transmitter so you do not interfere with other radio-users and you do not blow up yourself.
As a consequence, arduino-code and the POCSAG message -format does not belong in the lessons provided by the radio-clubs to get people licensed.


So, ... then what?

Well, as I mentioned, what I think would help is self-learning-track so that people who *are* interested to go "to the next step" are able to do so.

That will help both these individual hams, and also clubs who want to help members to take that step in a "group" context.



73
kristoff - ON1ARF

On 26/06/2020 00:25, Richard in NC via groups.io wrote:
Back in the day when the FCC gave the ham radio tests (in the FCC office) you actually had to learn about electronic theory and there were no published questions or answers. Only a brief overview of what the test would cover. For example, the Novice license covered very little electronics, the General theory (which was the same as the Technician theory as there was element 3 and not a 3a and 3b) you had to learn about FM theory and oscillators, some SSB theory, antenna theory, the Advanced license required more in depth theory and knowledge of troubleshooting, and the Extra required even more knowledge. Once the questions and answers were released to the public, people tend to memorize them and not actually learn the theory, nor care to. I myself enjoyed learning about the theory and made a career using it.

I know some who did this and have learned some things about the theory from experience using it, but it is not the same hobby anymore.

73 Richard


Re: study material to teach hams on datacommunication

Richard in NC
 

Back in the day when the FCC gave the ham radio tests (in the FCC office) you actually had to learn about electronic theory and there were no published questions or answers. Only a brief overview of what the test would cover. For example, the Novice license covered very little electronics, the General theory (which was the same as the Technician theory as there was element 3 and not a 3a and 3b) you had to learn about FM theory and oscillators, some SSB theory, antenna theory, the Advanced license required more in depth theory and knowledge of troubleshooting, and the Extra required even more knowledge. Once the questions and answers were released to the public, people tend to memorize them and not actually learn the theory, nor care to. I myself enjoyed learning about the theory and made a career using it.

I know some who did this and have learned some things about the theory from experience using it, but it is not the same hobby anymore. 

73 Richard 


Re: study material to teach hams on datacommunication

Kristoff Bonne
 

Trip,


To be honest, that is not really my problem.

I think that in almost all clubs, you have about 5 % of the people who are interested in homebrew DIY or develop the hobby: the 'maker' and the 'developer' people of the amateur-radio world.
These people are my audience.
And, to be honest, I don't even know to what degree that is all linked to the exam. Most of the more interesting things digital communication are not in the exams neither, so are not even part of the courses given by the clubs.

I just want to be able to help these one or two people in a club that *do* are interested in really knowing how something works, who *do* want to build stuff themselfs  and who *do* want to be more then just an operator.


My question here is: How do you get these people over the first hurdle: aquiring the required theoretical knowledge without having to know all the math that comes with the "EE-engineering" types of online courses.



73
krstoff

On 24/06/2020 10:31, kt67 wrote:
kristoff,

In the US we are quickly headed for a no test license.
So your fighting an uphill battle.

If you find that book pls let us know, I would read it.

Trip - KT4WO


On 6/23/20, Kristoff Bonne <kristoff@skypro.be> wrote:
Hi all,



As I once wrote some libraries for encoding POCSAG-messages on arduino
and GNU Radio that are now on github, I sometimes get mails from people
asking me about POCSAG.



Now, looking at some of the questions I get, I do notice quite a lack of
basic knowledge on digital communication in the amateur-radio community.
E.g. I do not know how many times I have already explained that FSK
("Frequency Shift Keying") -as used by POCSAG paging-, is in fact
nothing else but a variation on normal FM. I keep on asking myself
"isn't this something that somebody with a ham-license is supposed to
know?"

I get the impression that, although all ham-radio course do explain AM,
FM and SSB, for some reason the "digital" version of them (and how much
they are actually alike) are not really covered; or not to a degree that
people have an idea of digital communication really *is*.
For me, I learned most of digital communication from books (mainly on
land-based digital communication) but I must say that a lot of the books
and study-material on digital communication and datacomm do are either
oriented towards EE students (i.e. with a lot of focus on math) or to
much oriented on "operating" (i.e. not providing a descent theoretical
background on the topic)


So, ..  I'm looking for study-material or books that a provide a base
and descent theoretical background on the topic, but without all the
math that comes with the EE engineering-courses. By preference, the
course would build on the material used of the ham-radio license exam.
My target-audience is a typical amateur-radio operator:  learned
electronics via a courses in a local radio-amateur club, either no or
limited technical background) .

What would you advice to a fellow ham that wants to learn more about
digital communication, going beyond being just an operator?



Does the ARRL sell any good books on this topic?




73
kristoff - ON1ARF






Re: New digital mode PS-18 (HF pager) from DXsoft and Radial, or we invented APRS again :-)

 

On 6/24/2020 12:05 PM, Cliff Fox (KU4GW) wrote:
People already complain about the Automatcally Controlled Digital
Systems like Winlink and nothing has been done about them randomly
transmitting on top of ongoing communications.
Not to defend Winlink, but the so-called "Auto" stations do not transmit
unless queried by a manned station. Which is really more of a semi-auto
with one end being attended and needing to ensure the frequency is clear.

Most of the so called "Automatic" station complaints are really about
the classic hidden terminal case where a station could not hear one end
of a transmission in progress, and thus initiated communication. Happens
a thousand times a day on Voice/CW, so why would we think the digital
modes would automatically have a magic fix?

Don't have a horse in that race, but it is a common misconception.

Have fun,

Alan
KM4BA


Re: New digital mode PS-18 (HF pager) from DXsoft and Radial, or we invented APRS again :-)

Chiefsfan2
 

HF (pager) is just a title. If you look at the actual software, it is a app that allows two way texting. It sends a beacon if you you want which is no different than any other beacon in the amateur radio service which would be a one way communication. There are some groups actually using pagers on ham frequencies to alert their ares teams and also just for fun, are these in violation?

On Jun 24, 2020, 11:15 -0500, Cliff Fox (KU4GW) <cliffku4gw@...>, wrote:
I do see possible violations, it's up to the FCC's interpretation of the rules.
 
§97.113   Prohibited transmissions.
(a) No amateur station shall transmit:
 
(5) Communications, on a regular basis, which could reasonably be furnished alternatively through other radio services.
 
*(The FCC already has frequencies allocated for pager systems)
 
(5)(b) An amateur station shall not engage in any form of broadcasting, nor may an amateur station transmit one-way communications except as specifically provided in these rules; nor shall an amateur station engage in any activity related to program production or news gathering for broadcasting purposes, except that communications directly related to the immediate safety of human life or the protection of property may be provided by amateur stations to broadcasters for dissemination to the public where no other means of communication is reasonably available before or at the time of the event.
 
*(A pager system is a one-way communication.)
 
I guess it would be up to the FCC whether to enforce the rule and given their recent history of Part 97 Rule enforcement, barely any at all, you can certainly give it a try to find out. The worst that would probably happen would likely be only a letter saying you can't do it. If they sent a letter saying that and then it was ignored then it may get worse. Give it a try, but choose your operating frequencies wisely so no one complains to the FCC about it interfering with ongoing communications. People already complain about the Automatcally Controlled Digital Systems like Winlink and nothing has been done about them randomly transmitting on top of ongoing communications. The ARRL's solution is them wanting to take 3600-3650 Khz away from Extra Class operators on 75/80 meters and use it for ACDS stations, but that's currently only a proposal (See ARRL Draft Bandplan Rev3h - 29Jan2020 Page 5 of PDF version) that hasn't been approved yet. I rarely get QRM from ACDS on 75/80 meters, 40 meters is where they're always giving me problems. The ARRL's bandplan proposal sets aside 7100-7125 Khz for ACDS on 40 meters. The same proposal includes giving phone privileges to Technician licensees from 3900-4000 Khz with a 200 watt maximum power limit. I have no problem yielding the bottom 50 khz of my Extra Class privileges to ACDS on 80 meters or the 7100-7125 on 40 meters. I do hope they don't grant the Technician licensees phone privileges on 75 meter phone because of 2 reasons; (1) Have you listened there how bad things have gotten there since they dumbed down the exams and dropped the code requirement altogether? It has gotten much worse from my soon to be quarter century of having my license! I had a station key up and ask me for a SWR report a while back! LOL! and (2) They don't deserve it! They need to get more education on radio in general, how it works, the technical side of things like what heterodyning is, what SWR is, etc. Just this OM's opinion. 
 
Very 73 and good luck!
Cliff, KU4GW


Re: New digital mode PS-18 (HF pager) from DXsoft and Radial, or we invented APRS again :-)

Cliff Fox (KU4GW) <cliffku4gw@...>
 

I do see possible violations, it's up to the FCC's interpretation of the rules.
 
§97.113   Prohibited transmissions.
(a) No amateur station shall transmit:
 
(5) Communications, on a regular basis, which could reasonably be furnished alternatively through other radio services.
 
*(The FCC already has frequencies allocated for pager systems)
 
(5)(b) An amateur station shall not engage in any form of broadcasting, nor may an amateur station transmit one-way communications except as specifically provided in these rules; nor shall an amateur station engage in any activity related to program production or news gathering for broadcasting purposes, except that communications directly related to the immediate safety of human life or the protection of property may be provided by amateur stations to broadcasters for dissemination to the public where no other means of communication is reasonably available before or at the time of the event.
 
*(A pager system is a one-way communication.)
 
I guess it would be up to the FCC whether to enforce the rule and given their recent history of Part 97 Rule enforcement, barely any at all, you can certainly give it a try to find out. The worst that would probably happen would likely be only a letter saying you can't do it. If they sent a letter saying that and then it was ignored then it may get worse. Give it a try, but choose your operating frequencies wisely so no one complains to the FCC about it interfering with ongoing communications. People already complain about the Automatcally Controlled Digital Systems like Winlink and nothing has been done about them randomly transmitting on top of ongoing communications. The ARRL's solution is them wanting to take 3600-3650 Khz away from Extra Class operators on 75/80 meters and use it for ACDS stations, but that's currently only a proposal (See ARRL Draft Bandplan Rev3h - 29Jan2020 Page 5 of PDF version) that hasn't been approved yet. I rarely get QRM from ACDS on 75/80 meters, 40 meters is where they're always giving me problems. The ARRL's bandplan proposal sets aside 7100-7125 Khz for ACDS on 40 meters. The same proposal includes giving phone privileges to Technician licensees from 3900-4000 Khz with a 200 watt maximum power limit. I have no problem yielding the bottom 50 khz of my Extra Class privileges to ACDS on 80 meters or the 7100-7125 on 40 meters. I do hope they don't grant the Technician licensees phone privileges on 75 meter phone because of 2 reasons; (1) Have you listened there how bad things have gotten there since they dumbed down the exams and dropped the code requirement altogether? It has gotten much worse from my soon to be quarter century of having my license! I had a station key up and ask me for a SWR report a while back! LOL! and (2) They don't deserve it! They need to get more education on radio in general, how it works, the technical side of things like what heterodyning is, what SWR is, etc. Just this OM's opinion. 
 
Very 73 and good luck!
Cliff, KU4GW


Re: study material to teach hams on datacommunication

kt67
 

kristoff,

In the US we are quickly headed for a no test license.
So your fighting an uphill battle.

If you find that book pls let us know, I would read it.

Trip - KT4WO

On 6/23/20, Kristoff Bonne <kristoff@skypro.be> wrote:
Hi all,



As I once wrote some libraries for encoding POCSAG-messages on arduino
and GNU Radio that are now on github, I sometimes get mails from people
asking me about POCSAG.



Now, looking at some of the questions I get, I do notice quite a lack of
basic knowledge on digital communication in the amateur-radio community.
E.g. I do not know how many times I have already explained that FSK
("Frequency Shift Keying") -as used by POCSAG paging-, is in fact
nothing else but a variation on normal FM. I keep on asking myself
"isn't this something that somebody with a ham-license is supposed to
know?"

I get the impression that, although all ham-radio course do explain AM,
FM and SSB, for some reason the "digital" version of them (and how much
they are actually alike) are not really covered; or not to a degree that
people have an idea of digital communication really *is*.
For me, I learned most of digital communication from books (mainly on
land-based digital communication) but I must say that a lot of the books
and study-material on digital communication and datacomm do are either
oriented towards EE students (i.e. with a lot of focus on math) or to
much oriented on "operating" (i.e. not providing a descent theoretical
background on the topic)


So, ..  I'm looking for study-material or books that a provide a base
and descent theoretical background on the topic, but without all the
math that comes with the EE engineering-courses. By preference, the
course would build on the material used of the ham-radio license exam.
My target-audience is a typical amateur-radio operator:  learned
electronics via a courses in a local radio-amateur club, either no or
limited technical background) .

What would you advice to a fellow ham that wants to learn more about
digital communication, going beyond being just an operator?



Does the ARRL sell any good books on this topic?




73
kristoff - ON1ARF






study material to teach hams on datacommunication

Kristoff Bonne
 

Hi all,



As I once wrote some libraries for encoding POCSAG-messages on arduino and GNU Radio that are now on github, I sometimes get mails from people asking me about POCSAG.



Now, looking at some of the questions I get, I do notice quite a lack of basic knowledge on digital communication in the amateur-radio community.
E.g. I do not know how many times I have already explained that FSK ("Frequency Shift Keying") -as used by POCSAG paging-, is in fact nothing else but a variation on normal FM. I keep on asking myself "isn't this something that somebody with a ham-license is supposed to know?"

I get the impression that, although all ham-radio course do explain AM, FM and SSB, for some reason the "digital" version of them (and how much they are actually alike) are not really covered; or not to a degree that people have an idea of digital communication really *is*.
For me, I learned most of digital communication from books (mainly on land-based digital communication) but I must say that a lot of the books and study-material on digital communication and datacomm do are either oriented towards EE students (i.e. with a lot of focus on math) or to much oriented on "operating" (i.e. not providing a descent theoretical background on the topic)


So, ..  I'm looking for study-material or books that a provide a base and descent theoretical background on the topic, but without all the math that comes with the EE engineering-courses. By preference, the course would build on the material used of the ham-radio license exam.
My target-audience is a typical amateur-radio operator:  learned electronics via a courses in a local radio-amateur club, either no or limited technical background) .

What would you advice to a fellow ham that wants to learn more about digital communication, going beyond being just an operator?



Does the ARRL sell any good books on this topic?




73
kristoff - ON1ARF


Re: New digital mode PS-18 (HF pager) from DXsoft and Radial, or we invented APRS again :-)

Chiefsfan2
 

I don't see any violations.

On Jun 23, 2020, 00:00 -0500, Cliff Fox (KU4GW) <cliffku4gw@...>, wrote:
Unfortunately this may be illegal on amateur radio in the U.S. under FCC Rules & Regulations Part 97.113 (5) and (5) (b). 

73 de Cliff, KU4GW


Re: New digital mode PS-18 (HF pager) from DXsoft and Radial, or we invented APRS again :-)

Cliff Fox (KU4GW) <cliffku4gw@...>
 

Unfortunately this may be illegal on amateur radio in the U.S. under FCC Rules & Regulations Part 97.113 (5) and (5) (b). 

73 de Cliff, KU4GW


Re: New digital mode PS-18 (HF pager) from DXsoft and Radial, or we invented APRS again :-)

Chiefsfan2
 

Thanks Segei. I purchased the android app and as soon as I get my radio interface I'm going to try and stir up some activity here in the U.S.

On Jun 16, 2020, 08:48 -0500, Sergei Podstrigailo <amx2@...>, wrote:
Hello all,

HF Pager for Windows V2.80 and HF Pager for Android V3.10 were released:

http://dxsoft.com/hfpagerw.zip

HF Pager for Android 3.10 is released.

https://play.google.com/store/apps/details?id=ru.radial.demo.hfpager

https://play.google.com/store/apps/details?id=ru.radial.full.hfpager

http://dxsoft.com/hfpageraen.html


CPU load has been significant reduced.
Channel busy detection algorithm was improved.
Channel sharing algorithm was improved.



--
Best regards,
Sergei mailto:amx2@...

Windows HAM radio software at http://www.dxsoft.com





Re: New digital mode PS-18 (HF pager) from DXsoft and Radial, or we invented APRS again :-)

Sergei Podstrigailo
 

Hello all,

HF Pager for Windows V2.80 and HF Pager for Android V3.10 were released:

http://dxsoft.com/hfpagerw.zip

HF Pager for Android 3.10 is released.

https://play.google.com/store/apps/details?id=ru.radial.demo.hfpager

https://play.google.com/store/apps/details?id=ru.radial.full.hfpager

http://dxsoft.com/hfpageraen.html


CPU load has been significant reduced.
Channel busy detection algorithm was improved.
Channel sharing algorithm was improved.



--
Best regards,
Sergei mailto:amx2@dxsoft.com

Windows HAM radio software at http://www.dxsoft.com


Re: VARA on FM 2M

Graham
 

On Wed, Jun 3, 2020 at 04:43 PM, Oliver K6OLI wrote:
Have fun experimenting

The  badge's   , FM and  HF are  a little  simplistic ,  
 
Vara  FM  is  intolerant of  frequency  displacement ,  having   no  AFC facility 
this  is inherent  in a  FM system , tx and recovered Rx tone's  are  always
identical [ frequency] . hence  AFC was not  provided.
 
But, out of the  box,  , could also  be  conveyed  via   Am or 
perhaps  pilot  carrier SSB  or  AM- vestigial sideband ? , 
 
9600  , Requires a greater bandwith , as provided  for  9600 packet
hence the  need  to  use the  9600  option  of the  Tx/Rx , 
but is still  essentially FM , with  zero off set capability . 
 
 
Vara HF is provided with AFC and is able to detect off sets, but 
Can also  be  used over  FM links , if the  link is very poor  or 
Narrow  bandwidth , 
 
During testing ,  I found  with a  local satation on 6 meters . 
who , had high 'solar panel' wide band noise , switching  from  SSB
to FM  tx/rx mode  provided a higher  maximum  rate , 

Take a  look at the  V-Sat  for  chat , that  has some  novel 
netting  and  measuring  functions  ..  based on the  HF modem 

Not the  inteded deployements ,  but room  for  experimentation -)

73 -Graham
g0nbd 


Re: Need info on reliable refurbished computer source

Dave Corio
 

Andy and any interested,

Got the "new" PC yesterday. So far I'm very impressed! It was packed well, clean, and the box contained everything listed. The computer itself was exactly as specified from Amazon, and so far has been easy to get set up (basics!) and running. Only another day or two to get all the ham software installed & running!

73
Dave - K1DJE


Re: New digital mode PS-18 (HF pager) from DXsoft and Radial, or we invented APRS again :-)

Kristoff Bonne
 

Serge,


On 3/06/2020 19:31, Sergei Podstrigailo wrote:
KB> I can't speak for John, but I think the question was about a port of the
KB> complete stack (encoder and decoder) to linux single-board computer or a
KB> MCU or MCU/FPGA.

We are working on full "Hardware pager" with embedded transceiver, STM32 controller and e-Ink display too...
Versions for small Linux systems probably will be made also, but some later...
I hope that's will not be a 'just install and use'  box. :-(


These kind of devices almost killed the spirit of amateur-radio. Thankfully the maker/hacker-community came to save us.


73
kristoff - ON1ARF


Re: New digital mode PS-18 (HF pager) from DXsoft and Radial, or we invented APRS again :-)

Chiefsfan2
 

After I played with it, it's not to bad. I used the demo for droid and played the test files on Nvis.club and it works pretty slick. I think it will be a good challenge to go in the field with low power and see what it will do providing we can get some more operators using it.

On Jun 4, 2020, 12:49 -0500, Andrew OBrien <k3ukandy@...>, wrote:
I’m getting a feeling this will take more of an effort than most hams are willing to undertake .

Andy K3UK


On Jun 4, 2020, at 12:09 PM, Sergei Podstrigailo <amx2@...> wrote:

Hello Chiefsfan2,

Thursday, June 4, 2020, 9:49:41 PM, you wrote:

C> Ok thanks. Is it possible to do an allcall to several station at once?

As I wrote, destination ID is used only to select a station which can send acknowledge.

All station receive all messages.

If you send "CQ", good way is to send it to "0" ID.




--
Best regards,
Sergei mailto:amx2@...

Windows HAM radio software at http://www.dxsoft.com







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