GLP When The Grid Goes Down - HELLSCHREIBER | |
Achduke7
User ID: 69637911 United States 10/14/2021 07:01 AM Report Abusive Post Report Copyright Violation | 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
User ID: 69637911 United States 10/18/2021 07:50 AM Report Abusive Post Report Copyright Violation | |
Achduke7
User ID: 44037497 United States 10/30/2021 10:25 AM Report Abusive Post Report Copyright Violation | |
Achduke7
User ID: 44037497 United States 11/06/2021 07:50 PM Report Abusive Post Report Copyright Violation | 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) User ID: 33280342 United States 01/22/2022 05:58 AM Report Abusive Post Report Copyright Violation | 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. 100% Natural Unvaxxed Human Being |
Anonymous Coward User ID: 80946848 Cyprus 02/01/2022 07:39 PM Report Abusive Post Report Copyright Violation | 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? Quoting: Cheyenne 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? About damn time Lock them up |
Achduke7
User ID: 80279237 United States 03/03/2022 06:57 PM Report Abusive Post Report Copyright Violation | |
Achduke7
User ID: 69637911 United States 03/21/2022 02:04 PM Report Abusive Post Report Copyright Violation | |
Achduke7
User ID: 31971567 United States 10/06/2022 05:43 PM Report Abusive Post Report Copyright Violation | |
Achduke7
User ID: 85353594 United States 03/09/2023 07:43 AM Report Abusive Post Report Copyright Violation | |
CharlieFoxtrot11
User ID: 85129731 United States 03/09/2023 07:45 AM Report Abusive Post Report Copyright Violation | |
Riff-Raff
DEFCON 4 User ID: 85346396 United States 03/09/2023 07:57 AM Report Abusive Post Report Copyright Violation | 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? Quoting: Cheyenne 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? 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 Report Abusive Post Report Copyright Violation | 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? Quoting: Cheyenne 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? 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. 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 Report Abusive Post Report Copyright Violation | 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? Quoting: Cheyenne 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? 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. 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. 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 Report Abusive Post Report Copyright Violation | |
Achduke7
User ID: 82009802 Netherlands 02/10/2024 07:58 AM Report Abusive Post Report Copyright Violation | [link to meshtastic.org (secure)] Some people are achieving transmissions 100s of miles using a mesh. No HAM radio license required. Achduke |