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| General Description |
| The Collins 30L-1 Linear Amplifier has 1000 watts PEP power input on SSB and 1000 watts average on CW on all bands. It can be driven by the Collins 32S-3 Transmitter Collins KWM-2 or KWM-1 Transceiver, or most 70-100 watt exciters. Finished in the same attractive light gray as Collins' famous S/Line equipment and the KWM-2, the 30L-1 has all the controls conveniently accessible on the front panel. |
| Features |
| AUTOMATIC LOAD CONTROL allowing a high average level of modulation and optimum power output from the amplifier, within the rated limits of distortion. |
| RF INVERSE FEEDBACK reduces distortion products giving cleanest signal on the air. SOLID STATE RECTIFIERS resulting in heat reduction. |
| SELF-CONTAINED POWER SUPPLY with safety interlock circuits for grounding the high voltage when the cover is removed. |
| AUTOMATIC ANTENNA TRANSFER ON THE ON-OFF SWITCH permits the 30L-I to be switched in or out of the circuit at will by operating the switch. |
| The 30-L-1 provides SSB and CW emission and covers the 80,40, 20, 15 and 10 meter bands. Provisions are made for general coverage use, too. Automatic Load Control voltage from the 30L-1 is fed back to the exciter, providing maximum talking power without over driving and distortion. In combination with RF inverse feedback, Collins' exclusive Automatic Load Control provides not only more power, but a sharper signal than any comparable unit in the amateur field. |
| The 30L-1 is a grounded grid linear amplifier with four 811 A Triodes. They can be replaced without removing the unit from the cabinet. The 811A's are instantly heated; thus, there is no delay in warm-up. |
| Indicating devices on the 30L-1 include a panel meter monitoring final amplifier plate current, plate voltage, and tuning circuit. With the meter switch in tune position, the 30L-1 uses an exclusive comparator circuit which can be operated by simply adjusting tuning and loading controls to zero the meter. |
| The 30L-1's RF and power supply compartment covers operate safety interlock switches for protection of the operator. Cover removal closes these switches and shorts the high voltage to ground. This arrangement protects the operator from accidentally coming in contact with high voltage dc, which is present in either compartment. |
| The unit can be operated outside amateur band limits; however, retuning the input circuits may be necessary. Such retuning presents the proper load impedance to the exciter. |
| Speccifications |
| FREQUENCY RANGE: 3.4 - 30.0 mc, covering 80, 40, 20, 15 and 10 meter amateur bands. |
| MODE: SSB or CW. |
| TYPE OF SERVICE: Attended operation SSB continuous; CW 50% duty cycle. |
| POWER REQUIREMENTS: 115 v or 230 v, 50-60 cps; CW,key closed, 1200 watts ac; SSB, no modulation, 300 watts ac; SSB, speech modulated, 550 watts ac. |
| DRIVE POWER: 70 - 100 watts for full output. |
| PLATE POWER INPUT: 1000 watts PEP on SSB; 1000 watts on CW on all bands. |
| POWER OUTPUT: 500 watts PEP into 50 ohms on all bands. |
| HARMONIC AND OTHER SPURIOUS RADIATION: Second harmonic -40 db; third order distortion -30 db at full output. |
| NOISE LEVEL: 40 db below one tone carrier. |
| AMBIENT TEMPERATURE: 0 - 50 C. |
| AMBIENT HUMIDITY RANGE: 0% - 90%. |
| ALTITUDE: 0-10,000 ft. |
| PROTECTIVE DEVICES: All removable panels interlocked. Input line fused - 8 amps on each side. |
| SIZE: With feet - 14-3/4" W, 7-3/4" H, 13-3/4" D. |
| WEIGHT: 38 Lbs. (17.24 kg) . |
| OUTPUT IMPEDANCE: Variable. Nominally 50 ohms unbalanced with not more than 2:1 SWR on the amateur hands. |
| AUDIO COMPRESSION CHARACTERISTICS: ALC operates from the amplifier RF plate voltage. Threshold is adjustable and factory preset. |
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