Introduction
Welcome to the new generation of CB radios. The PRESIDENT HARRY II ASC offers top performance and quality for personal communication.
Installation
1. Mounting Your Mobile CB Radio
Choose a practical location that does not interfere with the driver or passengers. Use the provided cradle (1) and self-tapping screws (2). Ensure wiring is protected. For dashboard mounting, an external speaker (connector C) may improve sound quality.
2. Antenna Installation
For optimal results, longer antennas are recommended. Mobile antennas should be mounted on a maximum metallic surface, away from windscreens. Fixed antennas require clear space. Ensure good ground contact for drilled antennas and protect coaxial cables. Connect the antenna to connector B.
3. Power Connection
The PRESIDENT HARRY II ASC operates on 12V DC (A). Ensure correct polarity (red wire to positive +, black wire to negative -). For 24V systems, use a 24/12V converter. Connect directly to the battery to minimize interference. The unit is protected against polarity inversion but check connections before powering on. The fuse is rated at 2A; do not replace it with a different value.
Basic Operations Before First Use
- Connect the microphone.
- Check antenna connections.
- Turn the set on by turning the VOLUME knob (1) clockwise.
- Turn the SQUELCH knob to minimum (anti-clockwise).
- Adjust the volume to a comfortable level.
- Go to Channel 20 using the rotary knob.
Adjustment of SWR (Standing Wave Ratio)
This must be done when first using the radio or repositioning the antenna. Perform in an obstacle-free area. Use an external SWR meter connected between the CB radio and antenna (max 40cm cable). Set the SWR meter to CAL or FWD, press the PTT switch, calibrate using the key, then switch to SWR. The reading should be as close to 1 as possible (1-1.8 is acceptable). Re-calibrate after antenna adjustments. PRESIDENT recommends cables less than 3m.
How to Use Your CB
1. ON/OFF - VOLUME
Turn knob (1) clockwise to turn on and increase volume.
2. ASC (Automatic Squelch Control)/SQUELCH
Suppresses background noise. ASC is a patented PRESIDENT feature for improved listening comfort. Manual squelch requires precise adjustment to eliminate noise without cutting strong signals.
3. RF GAIN
Adjusts reception sensitivity. Set to maximum for long distances. Reduce to avoid distortion with nearby correspondents.
4. CHANNEL SELECTOR ROTARY KNOB
Selects channels 1-40 for transmitting and receiving.
5. DISPLAY
Shows functions, reception level, and emitted power. The TX LED indicates transmission mode.
6. FREQUENCY BAND SELECTION
Choose bands according to the country of operation. Follow specific switch (F/OFF) and channel selection procedures. Some countries require a license.
7. MODE
Select AM (obstacles, medium distance) or FM (nearby, flat areas). Must match your correspondent's mode.
8. CH 19
Dedicated switch for Channel 19.
9. 6-PIN MICROPHONE PLUG
Front panel microphone connector.
10. PTT (Push to Talk)
Press to transmit, release to listen.
Connectors
- A: DC-POWER TERMINAL (13.2 V)
- B: ANTENNA CONNECTOR (SO-239)
- C: EXTERNAL SPEAKER JACK (8 Ω, Ø 3.5 mm)
Technical Characteristics
General
- Channels: 40
- Modulation Modes: AM/FM
- Frequency Ranges: 26.965 MHz to 27.405 MHz
- Antenna Impedance: 50 ohms
- Power Supply: 13.2 V
- Dimensions: 115 (L) x 180 (H) x 35 (D) mm
- Weight: 0.8 kg
- Accessories Supplied: Electret microphone with support, mounting cradle, screws.
- Filter: ANL (Automatic Noise Limiter) built-in
Transmission
- Frequency Allowance: +/- 300 Hz
- Carrier Power: 1 W AM / 4 W FM
- Transmission Interference: inferior to 4 nW (- 54 dBm)
- Audio Response: 300 Hz to 3 KHz in AM/FM
- Emitted Power (adj. channel): inferior to 20 µW
- Microphone Sensitivity: 10 mV
- Drain: 1.7 A (with modulation)
- Modulated Signal Distortion: 1.8%
Reception
- Max. Sensitivity (20 dB sinad): 0.5 µV - 113 dBm (AM/FM)
- Frequency Response: 300 Hz to 3 kHz in AM/FM
- Adjacent Channel Selectivity: 60 dB
- Maximum Audio Power: 5 W
- Squelch Sensitivity: minimum 0.2 µV - 120 dBm, maximum 1 mV - 47 dBm
- Frequency Image Rejection Rate: 60 dB
- Intermediate Frequency Rejection Rate: 70 dB
- Drain: 500 mA nominal / 800 mA maximum
Trouble Shooting
1. CB Radio Will Not Transmit or Transmission is Poor Quality
- Check antenna connection and SWR adjustment.
- Check microphone connection.
- If display flashes when PTT is activated, release and re-press PTT.
2. CB Radio Will Not Receive or Reception is Poor
- Check squelch level.
- Check volume level.
- Check microphone connection.
- Check antenna connection and SWR adjustment.
- Ensure you are using the same modulation mode (AM/FM) as your correspondent.
3. CB Will Not Light Up
- Check power supply.
- Check connection wiring.
- Check the fuse.
How to Transmit or Receive a Message
Ensure your CB radio is ready (antenna connected). Choose your channel (e.g., 19, 27) and mode (AM/FM) matching your correspondent. Press the PTT switch and announce your message (e.g., "Attention stations, transmission testing") to check signal clarity and power. Release the PTT and wait for a reply. If using a calling channel, switch to another available channel for conversation to keep the calling channel clear.
Glossary
International Phonetic Alphabet
- A Alpha, B Bravo, C Charlie, D Delta, E Echo, F Foxtrott, G Golf
- H Hotel, I India, J Juliett, K Kilo, L Lima, M Mike, N November
- O Oscar, P Papa, Q Quebec, R Romeo, S Sierra, T Tango, U Uniform
- V Victor, W Whiskey, X X-ray, Y Yankee, Z Zulu
Technical Vocabulary
| AM | Amplitude Modulation |
| CB | Citizen's Band |
| CH | Channel |
| CW | Continuous Wave |
| DX | Long Distance Liaison |
| DW | Dual Watch |
| FM | Frequency Modulation |
| GMT | Greenwich Meantime |
| HF | High Frequency |
| LF | Low Frequency |
| LSB | Lower Side Band |
| RX | Receiver |
| SSB | Single Side Band |
| SWR | Standing Wave Ratio |
| SWL | Short Wave Listening |
| SW | Short Wave |
| TX | CB Transceiver |
| UHF | Ultra High Frequency |
| USB | Upper Side Band |
| VHF | Very High Frequency |
CB Language
| Advertising | Flashing lights of police car |
| Back off | Slow down |
| Basement | Channel 1 |
| Base station | A CB set in fixed location |
| Bear | Policeman |
| Bear bite | Speeding fine |
| Bear cage | Police station |
| Big slab | Motorway |
| Big 10-4 | Absolutely |
| Bleeding | Signal from an adjacent channel interfering with the transmission |
| Blocking the channel | Pressing the PTT switch without talking |
| Blue boys | Police |
| Break | Used to ask permission to join a conversation |
| Breaker | A CBer wishing to join a channel |
| Clean and green | Clear of police |
| Cleaner channel | Channel with less interference |
| Coming in loud and proud | Good reception |
| Doughnut | Tyre |
| Down and gone | Turning CB off |
| Down one | Go to a lower channel |
| Do you copy? | Understand? |
| DX | Long distance |
| Eighty eights | Love and kisses |
| Eye ball | CBers meeting together |
| Good buddy | Fellow CBer |
| Hammer | Accelerator |
| Handle | CBer's nickname |
| Harvey wall banger | Dangerous driver |
| How am I hitting you? | How are you receiving me? |
| Keying the mike | Pressing the PTT switch without talking |
| Kojac with a kodak | Police radar |
| Land line | Telephone |
| Lunch box | CB set |
| Man with a gun | Police radar |
| Mayday | SOS |
| Meat wagon | Ambulance |
| Midnight shopper | Thief |
| Modulation | Conversation |
| Negative copy | No reply |
| Over your shoulder | Right behind you |
| Part your hair | Behave yourself - police ahead |
| Pull your hammer back | Slow down |
| Rat race | Congested traffic |
| Rubberbander | New CBer |
| Sail boat fuel | Wind |
| Smokey dozing | Parked police car |
| Smokey with a camera | Police radar |
| Spaghetti bowl | Interchange |
| Stinger | Antenna |
| Turkey | Dumb CBer |
| Up one | Go up one channel |
| Wall to wall | All over/everywhere |
| What am I putting to you? | Please give me an S-meter reading |
Certificate of Conformity
We, GROUPE PRESIDENT ELECTRONICS, Route de Sète, BP 100 – 34540 Balaruc – FRANCE, declare that the CB radio-communication transceiver, Brand: PRESIDENT, Model: HARRY II ASC, Manufactured in PRC, is in conformity with the essential requirements of Directive 1999/5/CE (Article 3) and European Standards: EN 300 135-2:v1.1.1 (2000), EN 300 433-2 :v1.1.2 (2000), EN 301 489-13 v 1.2.1 (2002), EN 60215 (1996).
Balaruc, the 2005-01-17
Jean-Gilbert MULLER, General Manager
