A familiar radio amateur called and warned me about the August Meteor Stream Perseids whose peak falls from August 12 to 13. In which you need to work at 144.360 MHz with a digital type of communication MSK144 in the MSHV program.

Introduction

MSHV program has been developed Hrizimir HrISTOV LZ2HV. The program gained the most popular for digital species MSK144 (meteors), FT8 and FT4 (work on KV and VHF).

Installation

It is possible both compilation from the source codes and the installation of the finished DEB file of the package. I consider the second method - from the Deb file.

1. 1. Download the Deb file marked in the file name "LM" (from the phrase "Linux Mint") by link with the main page of the site http: //lz2hv.org/node/10 which is called "Download MSHV Debian Linux 32-bit, 64-bit and ARM (Ubuntu, Raspbian) binaries compiled by RicharD - G8JVM ".

2. In Linux Mint 19-20 and Debian 11: satisfy the dependencies:

   sudo apt-get install qtbase5-dev qtchooser qt5-qmake qtbaSE5-DEV-TOOLS
   
   sudo apt-get install qt5-defaULT
   
   sudo apt install fftw3 libqt5websockets5 libqt5websockets5-dev

3. Correct packages:

   sudo apt-get install -f

4, set the _ main package (Sudo rights are also required here). At the time of writing, MSHV has the last version 258 , recently came out 259 :

sudo dpkg -i MSHV_259_LM19_amD64.deb

or

sudo dpkg -i MSHV_259_amD64.deb

sudo dpkg --force-all -i MSHV_259_LM19_amD64.deb

5. It is necessary to give the right to write to the folder /USr/local/sbin/ для группы пользователя, чтобы иметь возможность сохранять конфигурацию (по умолчанию, то есть после установки программы права у пользователя 'rOOT 'and MSHV configuration is not preserved after the program is closed).

Solution of the problem:

sudo chgrp -R vladimir /usr/local/SBIN

where ' vladimir' - имя группы, которой принадлежит данный пользователь. Узнать, в какие группы входит пользователь, можно командами whiami и groups имя_пользователя'. Как правило, пользователю Linux соответствует одноименная группа. Не обязательно давать права именно группе имя_пользователя, можно любой, например, dialout или sudo if the group includes this user.

Program setting

1. We launch the mshv program through the menu " Start " - " Other " or in the terminal we type mshv and the key {Enter}.

2. Enter our call signal signal (Call sign) и квадрат (полный GRID локатор, например: KO59dw) в меню "Options" - "Macros" - "My Call ". Press the " set Default Macross " and close the window.

3. The sound card for entering/output of the sound we indicate in "Options" - "Sound setting" .

For an external sound card, I had to choose
Out devices:
* Pulse:alsa_output-GeneralPlus_USB_Audio_Device-00.analog.sterEO

or

* Pulse: Default

Input devices
* Pulse:alsa_input.usb-GeneralPlus_USB_Audio_Device-00.mono.fallback

or

* Pulse: Default .

3. We set up the _ Transburn control control in the menu " options " - " Interface ContrOl "^
   * port (sequential port or USB -Com virtual port) - I chose ttyusb0 * at home.
   baud raTE (transmission speed) - chose 38400 - coincides with the speed of transmission of the sequential port in the transceiver.
   pttmethod (через COM-порт или CAT-команды) - указал "PTT via CAT commaND "
   rig (indicate the model of our transceiver), I have - yaesu ft -857 *
   Press the wide button " st.arT Ptt Test " to check the transmission. The transmission takes place.
   

4. In the "Options" menu I installed a checkmark " monitor On on startup", чтобы программа начинала принимать после запуска (без необходимости нажимать кнопку "Monitor".

5. Opening hours: "Mode" - "MSK144" for meteors.

6. Setting half a period for transmission - in the main window "TX First" for St. Petersburg and Moscow,
   point "TX/RX" - Duration of the period 30 seconds .
   

7. Частота Band - VHF/UHF - 144 mHz for meteors:
   *In the program and on the transmitter, the frequency 144.360 MHz USB should be exhibited through CAT.

   The FT-857 transceiver mode for control from the computer should be "dig" .

8. Double click on the call sign triggers the gear - on the default in " Options " - " Decode LIST OPTIONS " - " DOWLLE CLICk on Call sets aUTO on ", check.

9. The record in the magazine is included by default in " Options " - " log options " - " log automaticaLly QSO MSK " - Check.

10. Чтобы посмотреть аппаратный журнал MSHV: "File" - "View Log", из данного окна возможен экспорт в ADIF: Menu - Export All in ADIF.
    The export of QSO magazine can be performed in any folder, indicating it in the dialog box. For example, for the subsequent download of the file on EQSL.CC.

11. Настраиваем уровень сигнала передачи по индикатору ALC трансивера - нажатием кнопку Tune в правой части окна и регулировкой уровня "ползунком" вверх-вниз добиваемся минимальных показаний.

12. Уровень приема должен быть нормальный (зеленый сектор, вблизи 0db).
    - контролируем по индикатору уровня (VU-метру). Для регулировки уровня приема используем соседний ползунок "RX":
    

13.13. Check Synchronization of PC time using the NTP protocol - например, с помощью команды systemctl status ntp - должен быть статус Active: active (running), diverse time with the site https://time.is не более 1 секунды.

14. Устанавливаем точку против CQ и нажимаем кнопку в центре окна "Auto Is On" - автоматическая последовательность (подстановка текста QSO с помощью макросов и приём-передача позывных) - начнётся передача в эфир CQ со своим позывным. Также, если в окне будет позывной другой радиостанции (при одиночном ping - коротком всплеске сигнала, отраженного от ионизированного следа одного сгоревшего метеорита) или "бурсте" (burst - более сильный и длительный всплеск от нескольких последовательно сгоревших метеоритов или одного большого "камня", оставившего за собой более интенсивный след) - при щелчке по позывному должен подставиться соответствующий макрос.

The operation of the QSO automaton must be checked. If for some reason the abstract does not work, the stages of QSO are executed THOUCHIC, changing the choice of the necessary macros in the right side of the window.

15. Если нажать кнопку "Auto Is OFF" или "Stop TX", передача в эфир прекратится, и радиостанция с программа MSHV останутся на приёме ("Monitor").

16.16. Do not forget to install the correct power of the transceiver: 100 W is allowed for 1 and 2 categories of radio stations and 10 W for 3 category. The maximum power on VHF 144 MHz - see.Solution of GKRCH составляет 100 Вт.

17. Чтобы работать "сплитом" (split) на общий вызов CQ
    • Change value in the QRG field. For example, 368
    • Below click the "Gen MSG" button
    • Select the seventh version of the macros: tx7 ("CQ 368 ...")
    • Click the "Auto Is Off" button - the inscription changes to "Auto Is on" and the transmission begins (in the 1st period).

There is a chat for contractual contacts On4kst запрещено передавать информацию, касающуюся информации в QSO такую как:

• "I need the final RRR"
• "Accepted you with report 47"
• "I accepted Burst from you"
• “Accepted Burst, but I can't completely decode it”
  Such an information reported in a chat or by phone immediately makes QSO invalid.

Correct messages in KST Chat of this kind (communication is in English):

• “Let's (now) will hold a sketch* at 144.388 in 1310z, I will be there”
  • “Because of QRM, let's change the frequency of 5 kHz higher”
  • “Let's take a break for 15 minutes and try from the very beginning”
  • “Thanks for the QSO” (after the end of QSO)

(SKED (SKED) - radio communications by preliminary agreement between correspondents at the agreed frequency and at the appointed time. It comes from the English word "schedule".

Links:
The MSK144 protocol for Meteor-Scatter CommunicaTion,mirror.
Meteor Scatter (на немецком языке)
VHF managers Handbook - описание стандартной MS процедуры
https: // groups.io/g/MSHV/Topics
*Interesting article about MS on the Radio amateur website Marie-El

Table of assessments MS QSO for reports

For example: Short "Burst" up to 0.5 seconds and s/w 5db - report 27
Long -term "burgt" 2 seconds and s/w 20db - report 49

With an insufficient reflection, a short -term ping is fixed from a single meteor, a duration of 100 milliseconds (0.1 seconds). In this case, the number "1", however, is not used. The minimum report with MS is 26 .

В пThe MSHV rogram in MSK144 mode uses a signal (reports) assessment based on a decibel scale (DB), as in the FT-8 digital mode. For example, a report +01 means 1DB above the noise in a strip of 2.7 kHz.

Example MS QSO

A abbreviated (without repetitions) example of a typical MS QSO:

Example MS QSO at two frequencies (Qsy)

A abbreviated (without repetitions) example of a typical MS QSO when working as a QSY method - after establishing a contact, a transition to a free frequency from QRM. The first station transmits at a total, called frequency 144.360, and in the call offers to switch to 144.367:

An example of reflection from the meteor:

Accepted and decoded reflections in the presence of connection to the Internet go in the form of spots to the server PSkreporter.info, and QSO - on DXmaps.com

The effect of the antennas and the power of the station ("Setapa" - from the word "setup") into distances at MS QSO

The minimum and maximum distance at MS QSO is 900 and 1500 km. At such distances, radio communications are possible to simpler antennas (4-5 elements). With a large number of reflections, QSO are carried out within 5 minutes, since the reflection from meteors are literally heard by ear, so much reflection from ionized traces. Over 1,500 to 2100 km - the area for unstable, difficult conditions extends, where MS reflections are weaker: the antennas of 9-15 elements (two or four "arrows") are suitable with PA (power amplifier) or transceiver 100 W, patience, perseverance ofrandom QSO и / или организация скедов.

If in Google maps or Yandex maps to draw two circles of these diameters, you can evaluate which regions (federal districts) or countries can be carried out by radio communications. Pale green in color, I designated simpler conditions of MS 900-1500 km, pale yellow-more complex (1500-2100 km). Over 21

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