Page 2 - CONTENTS
Thank you for purchasing the new transceiver. This unit has been carefully engineered and manufac tured to rigid quality standards, and should give you satisfactory and dependable operation for many years. IMPORTANT:---------------------------------------------- 1. Please read this Instruction Manu...
Page 4 - SPECIFICATIONS AND ACCESSORIES; Circuit and ratings are subject to change without
2. SPECIFICATIONS AND ACCESSORIES 2-1. SPECIFICATIONS Model Specifications Frequency range TM-221A 144 to 148 MHz TM-221ES 144 to 146 MHz TM-321A 220 to 225 MHz TM-421A TM-421ES 440 to 450 MHz (U.S.A. version) 430 to 440 MHz TM-521A TM-521E 1240 to 1300 MHz Mode F3E (FM) Antenna impedance 50 ohms Op...
Page 5 - Mobile Mounting Kit
2-2. ACCESSORIES Please unpack your new transceiver carefully, and confirm that the accessories listed below are included in the box. If any of the items is missing contact the dealer where the radio was purchased. ® MC-48B DTMF Microphone (U.S.A. version only) .........................................
Page 6 - INSTALLATION AND CONNECTION
3. INSTALLATION AND CONNECTION Warning:------------------------------------------------------------------------ Never apply AC power to the DC Power Supply until all installation and connections have been completed. 3-1. INSTALLATION Cautions:--------------------------------------------------------...
Page 9 - o n n; n c n n; LJi U U
1. Function Keys With the TM-221A/321A/421A/521A 0 (D 0 0 SHIFT REV ' SCAN CTCSS TONE 0 TONE key Activates the tone circuit for repeater control. This key is also used to open the squelch of a distant sta tion who has activated its CTCSS key. Refer to Sections 4-6 REPEATER and 4-8 TONE SQUELCH (CT...
Page 12 - n n; n r n n
4-2-2. Frequency and Memory Channel Selec tion The desired operating frequency and the Memory Channel may be selected by using either the TUNING control or the microphone UP/DWN switches. Press the VFO/M key to alternate between the VFO and the Memory Channel modes. 4-2-3. Frequency Step Selection ...
Page 18 - MAINTENANCE AND ADJUSTMENT
5. MAINTENANCE AND ADJUSTMENT 5-1. GENERAL INFORMATION Your transceiver has been factory aligned and tested to specification before shipment. Under normal cir cumstances the transceiver will operate in accordance with these operating instructions. All ad justable trimmers and coils in your transc...
Page 19 - LITHIUM BATTERY REPLACEMENT; wm
5-5. MICROPROCESSOR BACKUP LITHIUM BATTERY REPLACEMENT Lithium battery replacement should be performed by an authorized KENWOOD service facility; either your KENWOOD dealer, or the factory, since this unit con tains CMOS type circuitry. Notes:--------------------------------------------------------...
Page 20 - OPTIONAL ACCESSORIES; DECODER UNIT
6. OPTIONAL ACCESSORIES Note:----------------------------------------------------------------------------- Some optional accessories may not be available in your area. 6-1. TSU-5 PROGRAMMABLE TONE DECODER UNIT (TM-221A/321A/421A/521A only) Caution:----------------------------------------------------...
Page 24 - BLOCK DIAGRAM AND CIRCUIT DIAGRAM
7. BLOCK DIAGRAM AND CIRCUIT DIAGRAM 7-1. BLOCK DIAGRAM 7-1-1. TM-221 series Note:Block Diagram is subject to change without notice due to advancements in technology. 2 4
Page 28 - KENWOOD CORPORATION; KENWOOD ELECTRONICS DEUTSCHLAND GMBH
Model TM-221A/221ES/321A/421A/421ES/521A/521E Serial No. __________________________________________ Date of Purchase______________________________________________ Dealer __________________________________________ KENWOOD CORPORATION Shionogi Shibuya Building. 17-5, 2-chome Shibuya, Shibuya-ku. Tokyo...
Page 29 - KENWOOD