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This is a trial version.
This version is a test version.
If there are no major issues, the version number will be updated to 0.2P and re-released within one week. If you require a stable version, please download it after one week.
If there are no major issues, the version number will be changed to 0.2P and released again within one week. If you prefer a stable version, please download it after one week.
0. About 0.2B
In version 0.2B, the APRS transmission function was added. I don't have a lot of experience with APRS, and I haven't yet been able to test transmitting from the UV-K5 to an APRS receiver.
In version 0.2, the APRS transmission function was added. I don't have much experience with APRS, and I actually can't test the transmission from UV-K5 to an APRS receiver.
I performed the test using an FT-817 radio and the "Softmodem" software.
I performed testing using an FT-817 radio and a piece of software called Softmodem.
The AX.25 modem, which consists of software, requires precise timing control, but the UV-K5's microcontroller does not have a crystal, making precise control difficult.
The AX.25 modem consists of software and requires precise timing control, but the MCU in the UV-K5 does not have a crystal oscillator, making it difficult to achieve accurate timing control.
However, transmission and reception were confirmed at approximately 1200 bps. Please test to verify that it is functioning correctly.
However, the transmission and reception were confirmed at approximately 1200 bps. Please test it to verify its effectiveness.
1. APRS frequency setting
The specific APRS frequencies used vary depending on the country and region. Please set the frequency that is appropriate for your location.
The APRS frequencies used vary depending on the country and region. Please set the frequency appropriate for your area.
Typically, a single APRS frequency is used, but because they can vary depending on the region, I have set up two frequencies for APRS.
Typically, a single APRS frequency is used, but since it may vary by region, I have set up two frequencies for APRS.
In most cases, you will likely only need to enter the same frequency.
In most areas, you may only need to enter the same frequency.
1.1 Please choose the APRS frequency that is suitable for your area.
1.1 Please select the APRS frequency suitable for your region.
Navigate to the "ChSave" menu.
Navigate to the ChSave menu.
1.2 When you switch to channels 169 and 170, the channel names will automatically change to "APRS MSG" and "APRS GPS".
1.2 When you switch to channels 169 and 170, the channel names will automatically change to APRS MSG and APRS GPS.
Choose the items you want and save them. Most countries or regions likely use the same frequencies.
Select the desired projects and save them. Many countries or regions may use the same frequency.
2. Basic APRS settings
To use APRS, you need to provide certain information that is relevant to your specific location.
To use APRS, you must enter some information that is specific to your area.
Go to U.INFO in the settings menu.
Navigate to the U.INFO section in the Settings menu.
2.1 Enter the destination for APRS.
2.1 Enter the destination for APRS.
2.2 Enter DIGI for APRS. After searching the internet, most areas use WIDE1 or WIDE2.
2.2 Enter DIGI for APRS. After searching online, most regions use WIDE1 or WIDE2.
Because I am not very familiar with APRS, I considered all content related to APRS as optional.
Since I am not very familiar with APRS, I will consider all content related to APRS as optional.
2.3 Enter the message to be sent in the APRS Status.
2.3 Enter the message you want to send in APRS mode.
Currently, only 10 characters are supported. However, if the "APRS.if" function is included in version 1.0, the number of characters that can be entered will increase, or it will be possible to enter text in terminal mode.
Currently, it only supports up to 10 characters, but if the APRS functionality is included in version 1.0, the character limit will be increased or can be entered in terminal mode.
- Transmit APRS 3. Send APRS.
3.1 Enter the T.APRS menu
The frequency you wish to transmit will be automatically displayed on the screen.
The frequency you want to transmit will be displayed on the screen automatically.
3.2 To transmit, press the menu button twice or press PTT for 1 second.
3.2 To transmit, press the menu button twice or hold down PTT for 1 second.
3.3 After changing the item, you can transmit it by pressing the PTT.
3.3 After modifying the project, you can transfer it using PTT.
APRS Option Items 4.
The options set for UV-K5 are applied to items A through F, respectively.
The options set in UV-K5 are applied to the following projects A through F.
A: My Call Sign, B: My SSID, C: APRS DST, D: APRS Digi, E: Digi ID
A: My callsign, B: My SSID, C: AprsDST, D: AprsDigi, E: DigiID
Please refer to the video for information on setting up and testing MySSID and DigiID.
For information on setting up and testing MySSID and DigiID, please refer to the video.
- Sending Morse code after sending SSTV
5. After transmitting SSTV, transmit Morse code.
Change the STV CW setting to "ON" in the menu.
In the menu, change STV CW to ON.
Enter your call sign in My Call-in U.Info.
Enter your call sign in the "Call Sign" field within U.Info.
When SSTV is transmitted, your call sign will be transmitted using the F2A mode. This is similar to the SSTV program used on computers.
When SSTV is being transmitted, your callsign will be transmitted in F2A mode. This is similar to the SSTV programs used on computers.
SSTV (CW) The video will be uploaded to YouTube within 2 days and will also be included in this content.
SSTV （CW） The video will be released on YouTube within 2 days and will include content from this source.
Download Firmware
https://github.com/phdlee/uvk5cec/releases/tag/v_0.2B
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