Subject: MODIFICATION FOR KENWOOD TM-261

Date: Tue, 1 Sep 1998 15:21:51 -0600



THE KENWOOD TM-261 MARS/CAP MODIFICATION INFORMATION

TX-142-152 MHZ

RANDY SCHEIN KK7CN

2 LT CAP/COMMUNICATION TECHNICIAN

9-01-1998

kk7cn


IT IS ILLEGAL TO OPERATE OUTSIDE THE LIMITS OF YOUR CLASS OF LICENSE OR PERMITS



1.DISCONNECT THE POWER CORD AND ANTENNA COAX FROM TRANSCIEVER



2.REMOVE THE TOP COVER (2 SCREWS)



3.LOCATE A GREEN JUMPER WIRE LABELED W2



4.CUT THE GREEN WIRE IN HALF AND INSULTATE  BOTH ENDS



5.INSTALL THE TOP COVER AND RECONNECT THE POWER CORD AND ANTENNA



6.RESET THE MICROPROCESSOR BY HOLDING THE MR KEY DEPRESSED AS POWER IS TURNED ON



7.MODIFICATION IS COMPLETED





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The modulation that is set on the TM-261A from the factory isn't always up

to snuff. After having to repeat myself for about the

50th time in a month, I decide it was time to "turn it up".



1) Open the top of radio by removing to 2 screws and pulling up from

the back of the lid.



2) Find VR3 and adjust clockwise until desired audio level is reached.

(Mine is set to about > up)



3) Put the lid back on and stop repeating yourself.





73,

KC8EVB

Email:kc8evb


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Kenwood

Application Note

AAN-0019

Amateur Radio Division



Subject: TM-261A CLONING FEATURE

Date: 10/11/96



This modification is provided as is and is subject to change

without notice.  Kenwood Service Corporation makes no warrant

of any kind with regard to this modification procedure, including,

but no limited to, the implied warranties of merchantability and

fitness for a particular purpose.  Kenwood Service Corporation shall not be

liable for any error or for incidental or consequential damage

in conjunction with the furnishing, performance, or use of this

modification procedure.



The TM-261A is equipped with a wireless cloning feature.  This

allows the memory channel data of one TM-261A to be copied to

other similarly equipped TM-261A transceivers.  Wireless cloning

makes special event frequency coordination a much easier

task to manage.  The procedure for cloning is as follows:



PROCEDURE:



1. Designate one TM-261A as the Master transceiver and program

it with all the pertinent memory channel data.



2. Select a common simplex frequency for both the Master and Slave

transceivers.



3. Turn off all transceivers.



4. Turn on all transceivers while holding the [MHz] and [Tone] keys

depressed.  All units should now display the word CLONE.



5. Connect the Master transceiver to a 50 ohm load and connect

the Slave transceivers to their appropriate antenna.



6. Momentarily press the microphone PTT switch on the Master

transceiver.  The Master transceiver will begin transmitting

a series of DTMF signals to the Slave transceivers which will

reprogram their memory channels and the data contained in the

Master transceiver.



7. When the data transfer is successfully completed, all

transceivers will display the word END.  Should there be a break

in reception during data transfer, the Slave transceivers  

will display ERR.  If this occurs, simply repeat the steps

listed above.



8. Turn all transceivers off and then back on to return to

the normal operating mode.



NOTES:



1. Master and Slave transceivers must have the same

frequency configurations such as all must be stock or all

must be modified for MAR/CAP.



2. Cloning from a TM-261A to a different model transceivers

is not possible.



3. Transmit power output automatically goes low during cloning.