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Author Topic: kenwood tm-2550  (Read 2117 times)
WB4VBY
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Posts: 3




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« on: May 22, 2004, 09:28:14 PM »

I need programming instructions for a kenwood tm-2550 mobile rig--HOW DO YOU PROGRAM PL TONES FOR XMIT AND RECEIVE??
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KB9KHF
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Posts: 14




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« Reply #1 on: May 26, 2004, 10:59:37 PM »

Do you have the TU-7 tone board installed?

If not, then you can't access PL Tones.
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WB4VBY
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« Reply #2 on: May 26, 2004, 11:44:20 PM »

I don't know if I have the tone board or not, I don't have a manual.  I can select the PL tone that I want and save it so that the front panel indicates that I am using tone squelch, but apparently no tones are being transmitted.  Guess that I need to find a manual and maybe a schematic.  Thanks for the reply.
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KB9KHF
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« Reply #3 on: May 29, 2004, 11:04:33 PM »

If you remove the bottom cover, you will see the tone board mounted there.  It is an accessory board so it stands out cleary when the cover is off.
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WA9SVD
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Posts: 2198




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« Reply #4 on: June 23, 2004, 12:11:05 PM »

Just an addition, for you and others:  If you DO have the tone board, but lose tone function, open the bottom and unplug and plug the connector to the tone board several times.  Occasionally the contacts oxidize.  This fix usually works for another few years.
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KF6VNT
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« Reply #5 on: August 09, 2013, 03:02:02 PM »

I too am having dificulties. When I press the Tone button, it goes into the transmit mode.  I know I have the board because I bought and installed it.  The manual is quite clear on procedure. Stumped... Marc / KF6VNT
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W9GB
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Posts: 2656




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« Reply #6 on: August 09, 2013, 06:19:47 PM »

Kenwood TM-2550 Product Page -- Universal Radio
Shows all available accessories
http://www.universal-radio.com/catalog/fm_txvrs/tm2570a.html

Kenwood TM-2550 Manual (poor scan)
http://www.radiomanual.info/schemi/TM2570-TM2550-TM2530-TM3530_user.pdf

IF the Kenwood TU-7 Option board is not installed (or improperly assembled)
CTCSS (PL) does not work.

Piexx sells a replacement TU-7R, since the Kenwood TU-7 is discontinued.
http://www.piexx.com/index.php?main_page=product_info&products_id=15
« Last Edit: August 09, 2013, 06:23:32 PM by W9GB » Logged
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