RF Power  Amplifiers

20 Watt Variable RF Power Amplifier Model CVA-2

A Power Amp to go the distance you need !

The CVA-2 is a general purpose Power Amplifier designed to boost the RF output of any 100 mW to 350 mW device operating between 890 and 950 MHz (806 to 870 MHz by request), to20 Watts or more.

C V A - 2   F e a t u r e s

20 to 50 mile range (depending on antennas, elevation and terrain) with 20 Watts guaranteed output at 14 VDC.  CVA-2 output power is completely variable from 4 Watts to 20 Watts to suit a variety of applications and conditions (1W to 20 W on special order). Wide operating range of 10.5 to 15.5 V gets maximum life out of battery for field and remote location use, or connect to 115/230 VAC with our PS-12 power supply. The CVA-2 is fully protected against a Reversed Battery or Power connection.  Over Voltage and Over Temperature conditions shut off Amplifier to prevent damage.  RF Output is protected against defective Antennas or Cables & all load mismatches to a VSWR of 20:1. Fan is a high reliability, brushless, ball bearing design and is temperature controlled to keep the CVA-2 Amplifier cool for maximum life. Power connector is a rugged, locking type used for reliability and to simplify hook-up. A multifunction LED (Light Emitting Diode) Pilot Light turns from Green (normal operation), to Red to show Low Battery, Over Voltage and Over Temperature conditions. Highly efficient Power Amplifier circuit minimizes current consumption to prolong battery life.

C V A - 2   S p e c i f i c a t i o n s

Operating Frequency 890 to 950 MHz, 806 to 870 MHz Optional Power 12 VDC (10.5 to 15.5 V) Current consumption 4A at 12 VDC, 5.5A at 15 VDC RF input drive power 35 mW min. to 350 mW  max. RF output with  300 mW Input 25 W typical at 15.0 VDC 20 W typical at 13.5 VDC 16 W typical at 12.5 VDC 11 W typical at 10.5 VDC Power gain 19 dB typical at 870 MHz 18 dB typical at 914 MHz Efficiency 40% typical Maximum ratings for VSWR = 20:1 Vs = 16 V, Pout = 18 W (890-950  MHz); Pout =20 W (806-870 MHz), all phase angles, No damage Stability at Voltage Supply at 10.8 to 16 VDC  All Spurious outputs >60 dB  with: Pin =0 to at 300 mW, Load VSWR = 4:1, at all phase angles at test  frequency Harmonics 2fo = -40 dB, 3fo = -45 dB Quiescent Current <500 mA with no RF applied, at 12.5 VDC RF Connectors  Standard BNC, 50 Ohms Power Connector 4-pin Power mini-DIN Size 3.65w x 6.25d x 2.65h in (98 x 157 x 67 mm) Weight 1.5 lb  (682 g) ENVIRONMENTAL Operating temperature -20ºC to +65ºC  (-4ºF to +149ºF) Storage temperature -40ºC to +70ºC (-40ºF to + 158ºF) Humidity 90%, non-condensing

Please Note:  These devices have not been approved by the FCC.  These devices are not and may not be offered for sale or lease in the USA, until the approval of the FCC has been obtained.   Specifications subject to change without notice.

MADE IN THE USA

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