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GLP When The Grid Goes Down - HELLSCHREIBER

 
Achduke7

User ID: 69637911
United States
10/14/2021 07:01 AM

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Re: GLP When The Grid Goes Down - HELLSCHREIBER
Looking back at your first proposal I think a new digital mode like olivia makes sense but Hellschreiber would make a good back up on a different frequency.

Someone knowledgeable could make a radio out of transistors or even vacuum tubes to generate and receive a Hellschreiber signal like they did in the 1920s and 1930s.
Achduke
Achduke7

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10/18/2021 07:50 AM

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Re: GLP When The Grid Goes Down - HELLSCHREIBER

Achduke
Achduke7

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10/30/2021 10:25 AM

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Re: GLP When The Grid Goes Down - HELLSCHREIBER
I know that we have an X1 coming which is not much but what happens if we have another X28 or higher?
Achduke
Achduke7

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11/06/2021 07:50 PM

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Re: GLP When The Grid Goes Down - HELLSCHREIBER
Looks like it would be possible to get 9600 baud over SSB if the FCC ever changed the limit from a baud limit to a bandwidth limit.

Jeremy Clark achieves this over a SSB-USB with a 2400hz bandwidth which is half of what a normal 9600 baud signal normally uses. He was able to acheive this using OFDM and QAM.

Combining 9600 baud SSB with an efficient digital to voice codec like codec2 could allow longer range clear voice on HF bands.

[link to jeremyclark.ca (secure)]



Last Edited by Achduke7 on 11/06/2021 07:51 PM
Achduke
Cheyenne  (OP)

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01/22/2022 05:58 AM
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Re: GLP When The Grid Goes Down - HELLSCHREIBER
The use of Feld-Hell allows for the receiver of the messages to have the minimum of equipment and expertise to get the information.

The idea revolves around the majority of people, those without a ham license and not used to interfacing radios with computers. Feld allows for a simple placement of the cheap HF receiver speaker next to a computer running free software.

Other encoding schemes may require interface boxes and complexity that would drastically reduce the number of people getting the messages.
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Anonymous Coward
User ID: 80946848
Cyprus
02/01/2022 07:39 PM
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Re: GLP When The Grid Goes Down - HELLSCHREIBER
The question that has been kicked around on various threads is what if the GLP effect fails? How do we get the juicy info if it all goes sideways?

One way to do this is with HF radio on the 20 meter band using 50 watts, using a text mode called Hellschreiber - also called Feld-Hell.

Here's an introduction to this mode:

[link to www.nonstopsystems.com (secure)]

The idea would be to have a master station receiving at 20 meters throughout the day. 8 am CST to 7 pm seems to be the best for radio propagation at this frequency.

PRIMARY: 14.064 Mhz

SECONDARY: 14.075 Mhz

TERTIARY: 14.077 Mhz


[link to www.voacap.com]

Every day, say at 5 pm CST, a digest of all the field reports received with Feld-Hell would be retransmitted several times via CW. Then the master station goes into receive mode.

You wouldn't need a transmitter to get these reports. A HF receiver like a Grundig could receive the transmission, and a laptop with free Hellscheiber decoding software would display the daily digest.

You can download the software here:

[link to www.qsl.net]

And radio-computer hookup information is here:

[link to www.qsl.net]

Alternatively, a computer with an external microphone could conceivably receive the transmission by simply putting the microphone near the radio's speaker - no splicing wires would be needed.

Your thoughts?
 Quoting: Cheyenne


About damn time

Lock them up
Achduke7

User ID: 80279237
United States
03/03/2022 06:57 PM

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Re: GLP When The Grid Goes Down - HELLSCHREIBER
With all the cyber threats and nuclear threats this thread is very relevant.
Achduke
Achduke7

User ID: 69637911
United States
03/21/2022 02:04 PM

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Re: GLP When The Grid Goes Down - HELLSCHREIBER
[link to freedv.org (secure)]
Achduke
Achduke7

User ID: 31971567
United States
10/06/2022 05:43 PM

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Re: GLP When The Grid Goes Down - HELLSCHREIBER
New Hardware/Software PI Amateur Radio that is hackable complete with digital and analog modes.


Achduke
Achduke7

User ID: 85353594
United States
03/09/2023 07:43 AM

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Re: GLP When The Grid Goes Down - HELLSCHREIBER
Another interesting device for communication that is not too expensive.

A digital radio for under $100. Hook this up to a Raspberry Pi and an Antenna and you can transmit and receive FT8 and JS8call.


Achduke
CharlieFoxtrot11

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United States
03/09/2023 07:45 AM
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Re: GLP When The Grid Goes Down - HELLSCHREIBER
trump won
CharlieFoxtrot11
Riff-Raff
DEFCON 4

User ID: 85346396
United States
03/09/2023 07:57 AM

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Re: GLP When The Grid Goes Down - HELLSCHREIBER
The question that has been kicked around on various threads is what if the GLP effect fails? How do we get the juicy info if it all goes sideways?

One way to do this is with HF radio on the 20 meter band using 50 watts, using a text mode called Hellschreiber - also called Feld-Hell.

Here's an introduction to this mode:

[link to www.nonstopsystems.com (secure)]

The idea would be to have a master station receiving at 20 meters throughout the day. 8 am CST to 7 pm seems to be the best for radio propagation at this frequency.

PRIMARY: 14.064 Mhz

SECONDARY: 14.075 Mhz

TERTIARY: 14.077 Mhz


[link to www.voacap.com]

Every day, say at 5 pm CST, a digest of all the field reports received with Feld-Hell would be retransmitted several times via CW. Then the master station goes into receive mode.

You wouldn't need a transmitter to get these reports. A HF receiver like a Grundig could receive the transmission, and a laptop with free Hellscheiber decoding software would display the daily digest.

You can download the software here:

[link to www.qsl.net]

And radio-computer hookup information is here:

[link to www.qsl.net]

Alternatively, a computer with an external microphone could conceivably receive the transmission by simply putting the microphone near the radio's speaker - no splicing wires would be needed.

Your thoughts?
 Quoting: Cheyenne


Amateur radio is the only method of communication guaranteed to survive any SHTF scenario. It's one of the reasons I'm putting up a 60' mast this spring with an antenna array for various bands, among other things. A HF receiver should absolutely be a part of anyone's preps as that is the only way you will be able to gather news from outside your community.
"Collapse is a process, not an event." - Unknown

"It's in your nature to destroy yourselves." - Terminator 2

"Risking my life for people I hate for reasons I don't understand." - Riff-Raff

Deputy Director - DEFCON Warning System
Achduke7

User ID: 85353594
United States
03/09/2023 08:12 AM

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Re: GLP When The Grid Goes Down - HELLSCHREIBER
The question that has been kicked around on various threads is what if the GLP effect fails? How do we get the juicy info if it all goes sideways?

One way to do this is with HF radio on the 20 meter band using 50 watts, using a text mode called Hellschreiber - also called Feld-Hell.

Here's an introduction to this mode:

[link to www.nonstopsystems.com (secure)]

The idea would be to have a master station receiving at 20 meters throughout the day. 8 am CST to 7 pm seems to be the best for radio propagation at this frequency.

PRIMARY: 14.064 Mhz

SECONDARY: 14.075 Mhz

TERTIARY: 14.077 Mhz


[link to www.voacap.com]

Every day, say at 5 pm CST, a digest of all the field reports received with Feld-Hell would be retransmitted several times via CW. Then the master station goes into receive mode.

You wouldn't need a transmitter to get these reports. A HF receiver like a Grundig could receive the transmission, and a laptop with free Hellscheiber decoding software would display the daily digest.

You can download the software here:

[link to www.qsl.net]

And radio-computer hookup information is here:

[link to www.qsl.net]

Alternatively, a computer with an external microphone could conceivably receive the transmission by simply putting the microphone near the radio's speaker - no splicing wires would be needed.

Your thoughts?
 Quoting: Cheyenne


Amateur radio is the only method of communication guaranteed to survive any SHTF scenario. It's one of the reasons I'm putting up a 60' mast this spring with an antenna array for various bands, among other things. A HF receiver should absolutely be a part of anyone's preps as that is the only way you will be able to gather news from outside your community.
 Quoting: Riff-Raff


I just put up an octo mast in my attic. 10, 20, 40 and 80 meter ham sticks so that it would fit. It consists of 4 dipole antennas utilizing 8 ham sticks.

I am almost done stringing the cable to my basement where I plan to hook up a Raspberry Pi as a station that I can control from anywhere through my WiFi over Gnu-Radio.

I will be testing it soon.
Achduke
Riff-Raff
DEFCON 4

User ID: 85346396
United States
03/09/2023 07:06 PM

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Re: GLP When The Grid Goes Down - HELLSCHREIBER
The question that has been kicked around on various threads is what if the GLP effect fails? How do we get the juicy info if it all goes sideways?

One way to do this is with HF radio on the 20 meter band using 50 watts, using a text mode called Hellschreiber - also called Feld-Hell.

Here's an introduction to this mode:

[link to www.nonstopsystems.com (secure)]

The idea would be to have a master station receiving at 20 meters throughout the day. 8 am CST to 7 pm seems to be the best for radio propagation at this frequency.

PRIMARY: 14.064 Mhz

SECONDARY: 14.075 Mhz

TERTIARY: 14.077 Mhz


[link to www.voacap.com]

Every day, say at 5 pm CST, a digest of all the field reports received with Feld-Hell would be retransmitted several times via CW. Then the master station goes into receive mode.

You wouldn't need a transmitter to get these reports. A HF receiver like a Grundig could receive the transmission, and a laptop with free Hellscheiber decoding software would display the daily digest.

You can download the software here:

[link to www.qsl.net]

And radio-computer hookup information is here:

[link to www.qsl.net]

Alternatively, a computer with an external microphone could conceivably receive the transmission by simply putting the microphone near the radio's speaker - no splicing wires would be needed.

Your thoughts?
 Quoting: Cheyenne


Amateur radio is the only method of communication guaranteed to survive any SHTF scenario. It's one of the reasons I'm putting up a 60' mast this spring with an antenna array for various bands, among other things. A HF receiver should absolutely be a part of anyone's preps as that is the only way you will be able to gather news from outside your community.
 Quoting: Riff-Raff


I just put up an octo mast in my attic. 10, 20, 40 and 80 meter ham sticks so that it would fit. It consists of 4 dipole antennas utilizing 8 ham sticks.

I am almost done stringing the cable to my basement where I plan to hook up a Raspberry Pi as a station that I can control from anywhere through my WiFi over Gnu-Radio.

I will be testing it soon.
 Quoting: Achduke7


Sounds like a damn cool setup. I'm going for the tower because we live in the boonies, and if I can get a 60' tower up, I'll be able to pull in local TV broadcasts from three different cities, so might as well put the radio antennas up there too. It will actually be closer to 55' after I bury the base in concrete, but close enough.

I'll be wanting to just monitor 160 through 20 meter, and transmit on 12 meter through 70 cm bands. It's not a huge hobby for me, but I am part of the state's ARES program as well as a Skywarn spotter.
"Collapse is a process, not an event." - Unknown

"It's in your nature to destroy yourselves." - Terminator 2

"Risking my life for people I hate for reasons I don't understand." - Riff-Raff

Deputy Director - DEFCON Warning System
Achduke7

User ID: 86278180
United States
12/11/2023 09:32 AM

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Re: GLP When The Grid Goes Down - HELLSCHREIBER
Could pico balloons be the answer to relay comms in a SHFT scenario.


Achduke
Achduke7

User ID: 82009802
Netherlands
02/10/2024 07:58 AM

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Re: GLP When The Grid Goes Down - HELLSCHREIBER
Buy a meshtastic lora 915 Mhz radio for $25 and create a network with your neighbors. You can text them with no service from device to device and to your cell.

[link to meshtastic.org (secure)]

Some people are achieving transmissions 100s of miles using a mesh.

No HAM radio license required.
Achduke





GLP