{"id":217,"date":"2021-05-26T09:47:09","date_gmt":"2021-05-26T07:47:09","guid":{"rendered":"https:\/\/yvesoesch.ch\/wordpress\/?page_id=217"},"modified":"2023-09-19T15:19:47","modified_gmt":"2023-09-19T13:19:47","slug":"aeg-telecar9-bbc-veriphon-rt-61","status":"publish","type":"page","link":"https:\/\/yvesoesch.ch\/wordpress\/technique\/trx-modifications\/aeg-telecar9-bbc-veriphon-rt-61\/","title":{"rendered":"AEG Telecar 9 \/ BBC Veriphon RT-61"},"content":{"rendered":"\n
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\"\"<\/figure>\n\n\n\n
\"Telecar9's<\/figure>\n\n\n\n

<\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

The local ham radio clubs HB9MM<\/a> and HB9WW<\/a> had the opportunity to get many of these tranceivers. We had access to 4 different versions:<\/p>\n\n\n\n

\"\"<\/td>\"2m<\/td><\/tr>
\"\"<\/td>70cm with frontpanel<\/td><\/tr>
\"\"<\/td>70cm without frontpanel<\/td><\/tr>
\"\"<\/td>2m with reduced frontpanel<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Modifications for amateur radio use (summary)<\/h2>\n\n\n\n

The original firmware is usable on the amateur radio bands, but is not very convenient to use. Wulf-Gerd, DL1FAC has developped a new firmware that is much more \u00ab\u00a0ham-friendly\u00a0\u00bb. It is open source. With this firmware you can change the frequency as you like, change the power, set the squelch,… I highly recommand to update to this customized firmware. See below to get your own copy. You need to erase the EPROM with an UV eraser and burn it again with Wulf-Gerd’s binary, using a suitable EPROM programmer.

Of course the original radio firmware is also usable if you really want to use it or if you don’t have access to an EPROM programmer. You can programm it through the user interface, but it’s very long and painful. Best is to use a simple MAX-232 level converter and a slow enough PC (pentium with win98 is OK) to run the the programming software developped by PE2HVL.
Alternatively the software provided by triple1.nl runs on a contemporary computer using the same MAX232 interface

On the hardware side if you have got a 2 meters version, you don’t need to change anything. If you have a 70cm version, you need to add about 10 pF in parallel to each VCO (TX and RX) and adjust the whole RX chain. Use of an RF generator, or a transceiver testset helps a lot.<\/p>\n\n\n\n

Firmware variants<\/h2>\n\n\n\n

The firmware is contained in the EPROM chip (27C128 or 27C256) inside the radio. There are several variants.<\/p>\n\n\n\n

DL1FAC’s firmware (recommended)<\/h3>\n\n\n\n

Installation procedure<\/h4>\n\n\n\n

If you have access to an EPROM programmer I highly recommend to use DL1FAC’s firmware.<\/p>\n\n\n\n

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  1. Get Wulf-Gerd DL1FAC’s firmware corresponding to your radio version. See the table below for the different firmware corresponding to your radio versions (see table below)<\/li>\n\n\n\n
  2. Remove the EPROM inside the transceiver.<\/li>\n\n\n\n
  3. Burn a 27C128 with DL1FAC’s firmware. If you don’t have a 27C128 but a 27C256, use the dos command \u00ab\u00a0copy \/b file1.bin+file1.bin file2.bin\u00a0\u00bb to get a double sized EPROM file. The files are in raw binary format<\/li>\n\n\n\n
  4. Insert the newly burnt EPROM in the socket<\/li>\n\n\n\n
  5. You might have a small problem if the content of the E<\/strong>EPROM is random. It probably contains the settings of the previous firmware such as channels, CTCSS, tones squelch,… Therefore it’s good practice to erase the E<\/strong>EPROM chip as well. This is the XLS2816 chips located juste beside the EPROM. Put FFs in the whole memory.<\/li>\n\n\n\n
  6. Enjoy the nice firmware. Although it’s pretty user friendly, there are some option that are not fully obvious. HB9ONO has written 2 documents to document them:<\/li>\n<\/ol>\n\n\n\n

    User manuals to download (french but anyways useful)<\/h4>\n\n\n\n
    User manuals for the 9 keys<\/a>T\u00e9l\u00e9charger<\/a><\/div>\n\n\n\n
    User manual for the 19 keys<\/a>T\u00e9l\u00e9charger<\/a><\/div>\n\n\n\n

    Fimwares versions (binary files for EPROM)<\/h4>\n\n\n\n
    Radio version<\/strong><\/td>4m<\/strong><\/td>2m<\/strong><\/td>70cm<\/strong><\/td><\/tr>
    Normal<\/strong><\/td> tc4m-V15.bin<\/td> tc2m-V15.bin<\/td> tc70cm-V15.bin<\/td><\/tr>
    Trunking<\/strong><\/td>Not available<\/td> tc2mB-V15.bin<\/td>tc70cmB-V15.bin<\/td><\/tr><\/tbody><\/table>
    DL1FAC’s firmware versions depend on the radio model<\/figcaption><\/figure>\n\n\n\n
    TC9_DL1FAC_binaries<\/a>T\u00e9l\u00e9charger<\/a><\/div>\n\n\n\n

    Notes<\/h4>\n\n\n\n