AIR960

INSTRUCTION MANUAL
VHF AIR BAND TRANSCEIVER (FCC APPROVAL NUMBER GW2960 AIR)
 
INTRODUCTION
The AIR 960 handheld protable radio is a sophisticated, compact VHF synthesised transceiver.

It offers thumbwheel switch frequency selection with extremely good stability and accuracy. 
AIR 960 has COM channel 118.000-136.975 MHz and NAV channels 
108.000-117.975 MHz.

The radio meets tough environmental demands while providing cost effective, reliable communications.

PACKAGED CONTENTS
Check that your packaged content consists of the following:
   - AIR 960 radio
   - K-1120 12V 600mA  sealed Ni-Cd power pack (attached to radio)
   - Flexible Antenna
   - Wall Charger
   - Belt-Clip
   - Hand-Strap
   - Instruction Manual

OPTIONS
   - Linear Amplifer Output 15-20 Watt Carrier
   - Aviation Headset P.T.T. Adapter
   - Aviation Headsets
   - Aviation Intercom 2 or 4 Way
   - Aviation Panel Mount Kit

 

 
CONTROLS, SWITCHES, INDICATORS AND CONNECTORS
 
 1. ANTENNA CONNECTOR
 
Connect  the supplied flexible antenna. 

CAUTION: Transmitting without an antenna 
                     may damage the transmitter.
 
 2. SQUELCH CONTROL
 
Sets the squelch threshold level. Rotate this control 
completely counterclockwise for minimal level squelsh
function, and clockwise to raise the threshold level.
 
 3. VOLUME CONTROL
 
Rotate this control completely counterclockwise to turn 
the transceiver at minimal volume level. Rotate the 
control clockwise to increase the audio volume level.
 
 4. POWER SWITCH
 
Slide the switch to ON position to turn the transceiver 
power on. Slide the switch to OFF position to turn the
transceiver power off.
 
 5. 100 MHz INDICATOR
 
Indicates selected frequency set at 100 MHz range.
 
 6. 10 MHz THUMBWHEEL SWITCH
 
Sets selected 10 MHz within the 108.000-136.975 MHz 
frequency range.
 
 7.  1 MHz THUMBWHELL SWITCH
 
Sets selected 1 MHz frequency.
 
 8.  DECIMAL POINT
 
Indicates for example 116.150 MHz frequency as shown
on diagram.
 
 9.  100 KHz THUMBWHEEL SWITCH
 
Sets seleced 100 KHz frequency.
 
10. 0 KHz, 25 KHz; 50 KHz and 75 Khz
      SLIDING SELECT SWITCH
 
Sets 0 KHz, 25 KHz, 50 KHz and 75 KHz frequencies.
 
11. TRANSMIT / BATTERY INDICATOR
 
Illuminates during the transmit mode. Also indicates the 
battery condition during transmission. If indicator goes 
out during transmission, stop using the transceiver
immediately. Arrange charging of the batteries.
 
12. EXTERNAL MIC JACK

If the use of an external microphone is desired, connect it to 
this jack. When the external microphone is connected, the 
built-in microphone will not function.
(The external speaker-microphone, an optional accessory can 
be connected to this jack.)
 
13. EXTERNAL SPEAKER JACK
 
Connect an external speaker or earphone, if required to this 
jack. Use a speaker with an impedance of 8 ohms. When the 
external speaker is connected, the built-in speaker will not 
function. (Or, connect the optional external speaker-
microphone as explained above.)
 
14. PUSH-TO-TALK (PTT) SWITCH
 
Push this switch to begin transmitting, Speak clearly with a 
normal vocie into the microphone. The built-in microphone is
an electret condenser type which responds well to most voice
levels.
OPERATION 
RECEIVING
 
Verify that the POWER SWITCH is in the OFF position
before connecting power to the transceiver. Attach the 
flexible antenna or connecting an external antenna.
1. Rotate the VOLUME CONTROL and SQUELCH
    CONTROL counter-clockwise to the minimal level.
2. Slide the POWER SWITCH to the ON position.
3. Slowly rotate the VOLUME CONTROL clockwise to a 
    comfortable level.
4. Select the desired frequency by rotating the appropriate 
    thumberwheel switches and SLIDING FREQUENCY
    SWITCH.
5. If only noise with no signal is heard from the speaker, rotate
    the SQUELCH CONTROL clockwise until the noise stops.
    This is the threshold point. The transceiver remains silent after
    this adjustment until a signal is received  which opens the 
    receiver's squelch circuit. If very weak signals are received,
    the squelch may open and close intermittantly. In this case,
    rotate the SQUELCH CONTROL slightly further
    clockwise until the squelch operates correctly.
 
TRANSMITTING
 
1. Push the PTT (Push-To-Talk) switch and the transceiver
    begins transmitting. At the same time the TRANSMIT/
    BATTERY INDICATOR LED illuminates to indicate that
    the transceiver is in the transmitting mode.
    (If the indicator goes out during transmission, the batteries
    are about exhausted, replace new batteries or stop using the
    transceiver and charge the discharger batteries.)
2. Speak into the microphone using your normal voice level.
3. Release the PTT switch to return to the receive mode.
 
NOTE:    If the frequency is accidentally set to a frequency outside the effective range of 118.000- 136.975 
                MHz during transmission, there will be no transmission. The PTT switch must be released before
                resetting the effective frequency for transmission again. The same applies when an external
                microphone only is connected, (this will put the transceiver into a constant transmitting mode) the 
                external microphone must be disconnected before resetting the frequency. The above will not apply if 
                working within the effective frequency range.

 

SAFETY INFORMATION

BATTERY
1. The sealed Ni-Cd power pack must be charged prior to use. For charging you may use the supplied wall
    charger (charging time about 4-6 hours) or the optional desk top charger (charging time 1-2 hours) When
    charging, turn the radio OFF or remove the power pack from the radio.

2. AVOID EXTERNAL SHORT-CIRCUITING OF THE BATTERY, which could premanently damage the 
    battery and create a fire hazard.
  
3. Never put batteries into a fire, an explosion could occur.

USE OF RADIO
1. Do not hold the radio with the antenna close to, or touching exposed parts of the body, especially the face
    or eyes, while transmitting.
2. Do not hold the PTT switch on when not actually desiring to transmit.
3. Do not operate a transmitter near unshielded electrical blasing caps or in an explosive atmosphere.
4. Use of other power sources may be harmful and damage the radio.
5. This radio is not approved as a means of navigation.
 
SPECIFICATIONS
GENERAL
 
Number of Semiconductors
 
: Transistors  27
  FETS           5
  ICs             10
  Diodes        39
 
Frequency Control
 
: PLL synthesizer with thumbwheel switch
 
Channel Spacing
 
: 25 KHz
 
Frequency Stability
 
: ¡Ó0.002% (-10¢J~+50¢J)
 
Antenna  Impedance
 
: 50 ohms unbalanced 
Power Supply Requirment
 
: 12Vdc
 
Current Drain at 12V
 
: Transmitting : Approx. 0.9A
  Receiving     : Stand by Appro. 80mA
                         Max. audio output Approx. 220mA
    
RECEIVER
  
Frequency Range 
: 108.000-136.975 MHz
 
Receiving System
 
: Double-conversion superheterodyne
 
Modulation Acceptance
 
: A3E6K00 (6A3)
 
Sensitivity
 
: 108.000-117.975 MHz less than 2£gV (6 dB S/N, 30%
  Modulation)
  118.000-136.975 MHz less than 1£gV(6 dB S/N, 30%
  Modulation)
 
Squelch Sensitivity
(with 50 ohm load)
 
: less than 1£gV at threshold point  at frequencies
  higher than 118.000 MHz with 1KHz, 30% Modulation
Selectivity : More than 60 dB at adjacent channel
Spurious Pesponse Rejection ratio : More than 60 dB
Audio Output : More than 500 mW
   
TRANSMITTER  
Frequency Range : 118.000-136.975 MHz 
Output Power 
: 1.5W carrier power (4.8W PEP)
  (      ) shows PEP with 80% modulation by a 1 KHz 
  audio tone.
 
Emission mode
 
: A3E6K00 (6A3)
 
Modulation System
 
: Low level modulation
 
Spurious Emission
 
: More than 60 dB below carrier
 
Mircophone 
: Built-in electret condenser microphone
    
Dimensions
 
: 5 x 2.5 x 1.5" Approx without battery
 
Weight
 
: 1.3 Lbs. or 500g