Features: - Compact Size-The PRO 520XL is small enough to fit almost anywhere. Superior
engineering and micro-electronics insure the same quality and performance of larger units. - Microphone-Connect the rugged, professional quality microphone included with unit.
- Channel 9 - One button gives instant access to the emergency channel 9.
- S/RF Meter-An accurate 4 segment LED meter shows the signal strength of the receiver and transmitter.
- TX LED-Lights to indicate when the unit is transmitting.
- Channel Display-A large LED display shows the current channel in use.
- Channel Selector-An oversize channel knob makes it easy to select any of the forty
channels. - RF Gain -Adjust the sensitivity of the receiver for strong or weak signals.
- Squelch Control-Adjust the threshold of the receiver to eliminate background noise
whenever a transmission is not being received. - Volume Control-Turn the unit on or off and adjust the volume.
- PA Switch - Select the Public Address mode if an external PA speaker is installed.
- ANL Switch-The Automatic Noise Limiter helps reduce unwanted noise for better
reception. - Mounting Bracket- All mounting hardware is included for most any installation.
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| Specifications |
| Channels: | 40 AM |
| Frequency Range: | 26.965 to 27.405 MHz |
| Frequency Control: | Phase Locked Loop (PLL) synthesizer |
| Frequency Tolerance: | ±0.005% |
| Operating Temperature: | - 30° to + 50° C |
| Microphone: | Metal Type- Electret |
| Input Voltage: | 13.8 VDC nom. (+ or- ground) |
| Current Drain: | TX - full mod 1. 7 A
RX - with max. audio 1.7 A |
| Size: | 4 1/2" W x 6 3/4" D x 1 3/8" H |
| Weight: | 1 lb. 10 oz. |
| Antenna Connector: | UHF SO 239 |
| LED Meter: | Indicates relative RF output and received signal strength |
| Receiver |
| Sensitivity: | 0.7 uV for 10 dB: (S + N)/N
typical (limit: 1.0 uV) |
| Selectivity: | 6 dB @ 7 KHz, 70 dB @ 10 KHz typical |
| Image Rejection: | 75 dB typical |
| IF Frequency: | Double Conversion Superheterodyne
1st - 10.695 MHz, 2nd - 450 KHz |
| Automatic Grain Control: | (AGC) - less than 10 dB change in
audio output for inputs from 10 to 50K microvolts |
| Squelch: | Adjustable - threshold less than 1 uV |
| Audio Output Power: | 7 Watts max. into 8 ohms |
| Frequency Response: | 300 to 2000 Hz |
| Distortion: | less than 10% at 4 Watts, 1000 Hz |
| Internal Speaker: | 16 Ohms, 3 Watts round |
| PA Speaker: | 7 Watts into external 8 Ohm speaker |
| Transmitter |
| Power Output: | 4 Watts |
| Modulation: | Class B amplitude modulation |
| Frequency Response: | 300-2500 Hz |
| Output Impedance: | 50 Ohms, unbalanced |
