¥While scanning, the decimal point of the CTCSS frequency blinks.

¥To reverse the scan direction, turn the Tuning control or press Mic [UP]/[DWN].

¥To quit the function, press any key.

When a CTCSS frequency is identified, the identified frequency appears and blinks.

3Press [MENU] to program the identified frequency in place of the current CTCSS frequency or press any other key to exit the CTCSS Frequency ID Scan.

¥Turn the Tuning control or press Mic [UP]/[DWN] while the identified frequency is blinking to resume scanning.

4Press any key other than [MENU] to exit Menu Mode.

9Note:

CTCSS turns ON automatically when performing CTCSS Frequency ID Scan, even if the current frequency is not set with

CTCSS.

Received signals are monitored through the speaker while scanning is in progress.

The transceiver continues to check the Weather Alert Channel and Priority Channel during CTCSS scanning.

CTCSS Frequency ID Scan does not scan the tone if a signal is not detected.

DCS

DCS is similar to CTCSS. However, instead of using an analog audio tone, it uses a continuous sub-audible digital waveform that represents a 3-digit octal number. You can select a DCS code from among the 104 DCS codes listed in the table below.

To activate DCS, press [F], [CALL].

¥As you press [F], [CALL], the selection cycles as follows:

ÒOFFÓ ÒTONEÓ ÒCTCSSÓ ÒDCSÓ ÒOFFÓ.

¥ÒDCSÓ appears on the upper part of display, indicating that the DCS function is activated.

When DCS is ON, you will hear calls only when the selected DCS code is received. To answer the call, press and hold Mic [PTT], then speak into the microphone.

Note: You cannot use the DCS function and CTCSS/ Tone functions simultaneously. Switching the DCS function ON after having activated the CTCSS/ Tone functions deactivates the CTCSS/ Tone functions.

SELECTING A DCS CODE

1Press [F], [MENU] and turn the Tuning control to select Menu No. 4 (DCS).

¥The current DCS code appears.

2Press [MENU] and turn the Tuning control to select your desired DCS code.

¥The current DCS code appears and blinks.

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Kenwood TM-271A, TM-271E instruction manual Dcs, Ctcss

TM-271A, TM-271E specifications

The Kenwood TM-271A and TM-271E are robust dual-band transceivers designed for amateur radio enthusiasts looking for reliability, functionality, and ease of use. Both models operate in the VHF and UHF bands, specifically covering 144-148 MHz and 430-450 MHz, respectively. This versatility allows users to communicate across varied frequencies, making them suitable for a wide range of applications, from casual conversations to emergency communications.

One of the standout features of the TM-271A and TM-271E is their compact size, making them an ideal choice for mobile operations. Despite their small footprint, these radios pack a punch with a maximum transmit power of 50 watts in the VHF band and 35 watts in the UHF band. This power output ensures clear and effective communication over long distances, essential for outdoor activities and emergency situations.

The user-friendly interface of the TM-271 models includes a large, backlit LCD display, which provides clear visibility in various lighting conditions. The controls are intuitively arranged, allowing users to navigate functions with ease. Moreover, both models come equipped with an alphanumeric memory, allowing for the storage of up to 200 memories for easy access to frequently used frequencies.

Advanced features such as a built-in CTCSS (Continuous Tone-Coded Squelch System) and DCS (Digital Coded Squelch) enhance communication clarity by minimizing unwanted noise and ensuring that only desired signals are received. The TM-271A and TM-271E also support a wide range of modulation modes, including FM, allowing versatility in communication styles.

In terms of durability and build quality, the Kenwood TM-271 series excels with a rugged design that withstands the rigors of mobile use. The units are also equipped with a front-facing speaker that delivers excellent audio quality, ensuring clear communications even in noisy environments.

Another notable feature is the wideband reception capability, allowing users to listen to signals outside of the amateur bands, making these transceivers more versatile for everyday monitoring of public safety channels and other broadcasts. Furthermore, the inclusion of a built-in diagnostic function aids users in troubleshooting, ensuring that the radio remains in optimal working condition.

In conclusion, the Kenwood TM-271A and TM-271E are outstanding choices for amateur radio operators seeking a powerful, feature-rich, and user-friendly dual-band transceiver. Their combination of advanced technology, compact design, and rugged reliability makes them a popular choice among both novice and experienced operators in the radio community.