Introducing UV-K5 Version 0.2P (APRS added) (stable version)
This version is a stable version with various features added to APRS test version 0.2B.
Please refer to the Version 0.2B(C) post for frequency settings and MySSID settings used in APRS.
http://www.hamskey.com/2024/02/introducing-uv-k5-version-02b-aprs.html
0 APRS on UV-K5
If you are trying APRS for the first time on UV-K5, you must save the APRS transmission frequency in the channel in advance.
Tune the regular VFO to the APRS frequency appropriate for your country or region.
Then go to the ChSave menu and move to the very end.
Then, the APRS MSG or APRS GPS item will automatically appear.
You can save it there.
Save both APRS MSG and APRS GPS.
- This is to transmit APRS at any time while your radio is in operation.
1.MY CALL and MY SSID
MY CALL is used by APRS, SSTV, CW, WSPR, etc. Please enter your call sign.
SSID is used only in APRS, so it can be set in a separate menu. Set the value in MySSID in the setup menu.
2.GPS position settings
In 0.2P, GPS coordinates are converted to the APRS standard and transmitted. All you have to do is enter the coordinates as they appear on your GPS or Google Maps.
“DX CALL” is used in CW, SSTV, APRS, etc. and refers to the other party of communication.
APRS message function was added in Version 0.2P. APRS messages can be sent to a specific destination. DX CALL is used at this time.
In version 0.2P, you can directly enter the Digipeater SSID. The 7th part of the Digipeater text is the SSID.
In "WIDE1-2", WIDE1 is Digipeater and the 7th character, 2, is ssid.
EX) WIDE1 or WIDE1-0
In Version 0.2P, you can use two Digipeaters at the same time. Just enter the second Digipeater in AprsDP2. If you do not enter anything, only one Digipeater will be use
Below is an example of transmitting the SSID while transmitting the second Digipeater.
MSG is a message sent containing the call sign set in “DX CALL”.
CWM is a function that continuously transmits all text entered from U.INFO submenu CW0 to CW4. If '#' is encountered in the text from CW0 to CW4, transmission will be stopped.
Below is an example of CW0 to CW4 being used in APRS.
Since CW MSG3 contains '#', the text is transmitted only up to the characters before #.
Below is an example when the second Digipeater is set to WIDE2 and a separate SSID is not transmitted.
Transfer results for various Digipeater settings are included at the end of this post.
5.Transmit APRS
MSG at 0.2B was renamed STS. It follows the Status protocol of the Aprs regulations.
6.Transmission examples based on various settings
Below is an example sent while changing the settings to post this post.
Decode testing used direwolf.
In addition to the examples below, you can check the reception results from various existing commercial radios and their integration with the Aprs network in the github discussion.
7.Download
You can use "cec_0.20.packed.bin" file
Dear friend, can you change 1750 to 1400 Hz in standard firmware???
ReplyDeleteHello Seongho de David EA4SG. Your firmware is really well optimazed. Congrats for your work. Two questions... Is it possible to open TX in all the frequencies? Second question... Is it possible to have direct access to Mode changing (FM-AM-SSB-CW)?
ReplyDeleteHello dear Seongho, as a mainly CW operator thank's a lot for your work.
ReplyDeleteI have one (hopefully not to difficult to implement) feature request:
Can we have access to the LNA$, LNA, and PGA gain settings e.g. via the hidden menu?
By tweaking those values the RX-performance (blocking) with strong close-by signals can be drastically improved. I tested it using the EGzumer FW, where we have temporary access to those values (by pressing M in the analyzer mode). It would be absolutely no problem, if the displayed signal strength (dBm) is wrong, if the user deviates from the standard settings.
Being able to tweak those values really would bring the little radio to a new level.
Many thanks again
Willy, oe3wyc
After entering GPS coordinates into the radio, APRS sends bad, erroneous coordinates to the system. I read an incorrect location on the APRS map.
ReplyDelete