Kenwood TM-271A: Difference between revisions
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2m mobile 25/60W | |||
https://www.kenwood.com/au/com/amateur/tm-271a/ | https://www.kenwood.com/au/com/amateur/tm-271a/ | ||
[http://repeater-builder.com/kenwood/kenwood-index.html Repeater builder web site] | [http://repeater-builder.com/kenwood/kenwood-index.html Repeater builder web site] | ||
I looked in the corner of my lab and found a [[Larsen PO UHF antenna]] with a BNC hanging off it, so I stuck it onto the radio via an adapter and it's picking up NOAA now just fine. The antenna will probably melt if I hit transmit. :-) I think it came with the [[Radio Modems]] so it's probably the version that works at 4230 MHz | |||
I currently have turned transmit power down to about 1W on my test set up so it is unlikely to hurt anything. | |||
== Programming == | |||
I am using Chirp through a PG-4A cable with a serial to USB adapter (PL-2303), which does not work on Windows 10!! ("Unknown device is connected and ready to use!" huh yeah you are funny) and works flawlessly on Debian where I have no software installed for it. Grrr. '''On the Mac? YES! Works fine.''' So much for Windows. | |||
So, I have a cable and software that works for this radio. | |||
== APRS == | |||
Should work as a digipeater. See the [[APRS]] page. | |||
I want to turn the transmit power down as low as possible, defaults are 25 and 60W. | |||
This is just an experiment to try out the radios. | |||
== Repeater linking == | |||
The reason I have these radios in the first place, the [[Repeater linking]] project. | |||
== Mods == | |||
Notes on the [http://repeater-builder.com/kenwood/kenwood-packet-connector-notes.html Packet connector mod] | |||
[https://www.repeater-builder.com/kenwood/pdfs/tm-271a-ctcss-decode-mod.pdf TM-271A CTSS Decode Modification] | |||
Link requiring login: [https://www.mods.dk/view.php?ArticleKey=8860e834a67da41edd6ffe8a1c58fa55&i=1-kenwood-TM-271-Packet-modification-for-the-TM-271A Packet Connector Mod] | |||
A few photos [https://radiopancarulang1.blogspot.com/2016/05/cos-kenwood-tm-271.html COS output] | |||
The components are so tiny I doubt I can even hold a scope probe on there. | |||
== Docs == | |||
[[File:kenwood_tm271_instruction_manual.pdf]] | [[File:kenwood_tm271_instruction_manual.pdf]] | ||
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[[File:kenwood_tm271_service_manual.pdf]] | [[File:kenwood_tm271_service_manual.pdf]] | ||
[[Category: Radio]] | [[Category: Radio]] | ||
Latest revision as of 17:43, 4 March 2023
2m mobile 25/60W
https://www.kenwood.com/au/com/amateur/tm-271a/
I looked in the corner of my lab and found a Larsen PO UHF antenna with a BNC hanging off it, so I stuck it onto the radio via an adapter and it's picking up NOAA now just fine. The antenna will probably melt if I hit transmit. :-) I think it came with the Radio Modems so it's probably the version that works at 4230 MHz
I currently have turned transmit power down to about 1W on my test set up so it is unlikely to hurt anything.
Programming
I am using Chirp through a PG-4A cable with a serial to USB adapter (PL-2303), which does not work on Windows 10!! ("Unknown device is connected and ready to use!" huh yeah you are funny) and works flawlessly on Debian where I have no software installed for it. Grrr. On the Mac? YES! Works fine. So much for Windows.
So, I have a cable and software that works for this radio.
APRS
Should work as a digipeater. See the APRS page.
I want to turn the transmit power down as low as possible, defaults are 25 and 60W.
This is just an experiment to try out the radios.
Repeater linking
The reason I have these radios in the first place, the Repeater linking project.
Mods
Notes on the Packet connector mod
TM-271A CTSS Decode Modification
Link requiring login: Packet Connector Mod
A few photos COS output The components are so tiny I doubt I can even hold a scope probe on there.
