Kenwood TS 711A Manual

The Kenwood TS 711A is a high-performance VHF/UHF all-mode transceiver designed for amateur radio operations. This versatile radio features 50/144/430 MHz coverage, multiple modulation modes including SSB, CW, AM, FM, and digital modes, built-in DSP, automatic antenna tuner, and comprehensive connectivity options. Below are key sections covering specifications, operation, programming, maintenance, and troubleshooting.

Features at a Glance

Key components: Main transceiver unit, microphone, power cable, mounting brackets, and user manual.

Feature	Description
Frequency Coverage	50-54 MHz, 144-148 MHz, 430-450 MHz
Modulation Modes	SSB, CW, AM, FM, Digital (PSK31, RTTY)
Output Power	10W (50MHz), 50W (144MHz), 35W (430MHz)
Built-in DSP	Digital Signal Processing for noise reduction
Automatic Antenna Tuner	Built-in ATU for 50/144/430 MHz bands
Memory Channels	200 programmable memory channels
Display	Multi-function LCD with backlight
Power Requirements	13.8V DC ±15%
Connectivity	ACC socket for external devices
Size/Weight	240W × 85H × 260D mm, 3.5 kg

Installation

Unpack and inspect all components. Choose suitable location for operation.

1. Mounting: Use provided brackets for secure installation in vehicle or base station.
2. Power Connection: Connect red wire to positive (+), black wire to negative (-) of 13.8V DC power source.
3. Antenna Connection: Connect appropriate VHF/UHF antenna to ANT socket.
4. Microphone: Connect supplied microphone to MIC socket.
5. Accessories: Connect external speakers, data interfaces to ACC socket as needed.

WARNING! Ensure proper grounding and fuse protection. Do not operate without proper antenna connected.

First-Time Setup

Power on transceiver; initialize settings for optimal performance.

1. Frequency Selection: Use VFO knob to select desired operating frequency.
2. Mode Selection: Press MODE button to cycle through SSB, CW, FM, AM, Digital modes.
3. Power Output: Adjust power level using RF POWER control.
4. Squelch Setting: Set squelch level for noise-free reception.
5. Memory Initialization: Clear factory settings if desired (menu option 99).

CAUTION! Verify frequency and mode settings comply with local amateur radio regulations.

Specifications

• Frequency Range: 50-54 MHz, 144-148 MHz, 430-450 MHz
• Modes: LSB, USB, CW, AM, FM, Digital (PSK31, RTTY)
• Power Output: 10W (6m), 50W (2m), 35W (70cm)
• Sensitivity: SSB/CW: 0.25μV, FM: 0.35μV (12dB SINAD)
• Selectivity: SSB/CW: 2.4 kHz, AM: 6 kHz, FM: 12 kHz
• Power Supply: 13.8V DC ±15%, 15A max
• Current Drain: Receive: 1.3A, Transmit: 12A max
• Temperature Range: -10°C to +60°C
• Antenna Impedance: 50 ohms

Controls and Settings

Front Panel: POWER switch, VFO knob, LCD display, FUNCTION buttons, MIC socket.

Main Controls: POWER, VFO/MR (VFO/Memory select), MODE, SQL (Squelch), RF PWR, NB (Noise Blanker), DNR (Digital Noise Reduction), AGC (Auto Gain Control).

Menu Settings: Access via F key + menu number. Key settings: Menu 01 (SQL delay), Menu 05 (CW pitch), Menu 10 (Display contrast), Menu 15 (Time-out timer), Menu 20 (APO function), Menu 25 (CW weight), Menu 30 (Beep volume), Menu 99 (All reset).

Connecting Accessories

ACC Socket: For external speakers, data interfaces, tuner control.

1. Data Interface: Connect computer for digital mode operation (PSK31, RTTY).
2. External Speaker: Connect to SP jack for enhanced audio.
3. ATU Control: Connect compatible automatic antenna tuner.
4. Remote Control: Optional RC-20 remote control unit.

Tip: Use shielded cables for data connections to reduce interference.

Operating Modes

Supports multiple operating modes for versatile communications.

1. SSB Operation: Select LSB/USB, adjust clarifier for precise frequency tuning.
2. CW Operation: Use CW mode with adjustable speed and sidetone.
3. FM Operation: Select FM for repeater and simplex communications.
4. Digital Modes: Connect computer for PSK31, RTTY operation.
5. Memory Operation: Recall stored frequencies and settings.
6. Scan Operation: Programmable band and memory scanning.
7. Split Operation: Different transmit/receive frequencies for repeater use.

WARNING! Always identify your station according to amateur radio regulations.

Memory Programming

Store up to 200 frequencies with complete settings.

1. Select frequency and desired mode/settings.
2. Press F + MW (Memory Write).
3. Select memory channel number (00-199).
4. Press MW to store.
5. Recall memories with VFO/MR button.

Memory functions include: Memory name tags, Memory link, Memory scan, Memory lock.

Maintenance & Care

Keep transceiver clean and dry. Use soft cloth for exterior cleaning.

Regular Maintenance:

• Check antenna connections for corrosion
• Verify power cable integrity
• Clean front panel and controls
• Update firmware when available

CAUTION! Do not use chemical cleaners. Disconnect power before cleaning.

Regulatory Information

FCC Part 97: Certified for amateur radio service. This device complies with Part 15 of FCC Rules. Operation subject to condition that device does not cause harmful interference. Copyright © Kenwood Corporation. For technical support and service, contact authorized Kenwood service centers or visit www.kenwood.com.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power connection/fuse	Check power cable connections; verify fuse integrity; ensure proper voltage.
No transmission	Settings/antenna	Verify PTT operation; check antenna connection; confirm frequency/mode settings.
Poor reception	Antenna/settings	Check antenna system; adjust squelch/RF gain; verify frequency accuracy.
Overheating	Ventilation/power	Ensure adequate ventilation; reduce power output; check duty cycle.
Memory loss	Backup battery	Internal backup battery may need replacement after several years.

Reset: Menu 99 (All reset) returns to factory default settings.

Service: Contact authorized Kenwood service center for repairs.