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66-88 MHz
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88-108 MHz
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806-899 MHz
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Amateur Radio - VHPA RF AMPLIFIERS
VHPA = Very-High-Power-Amplifiers
Standard
HPA
CD/cc
CD/fn
Preamps
Amplifier Description
         Linear all-mode operation allows AM, SSB, FM, CW or Data operation. Specifications show typical Pin/Pout/Freq specs and DC power requirements, These are linear amplifiers with drive power levels usable down to <.5 watt. All amps are spectrally checked and are free of harmonics and spurious to -60dBc.
         Internal T/R-switching (rf-sensed or hard-key PTT) is built-in and incorporates adjustable relay delay control.  T/R-switched amplifiers have user friendly controls are mounted on front panel with all RF and DC cables attached out of sight on rear panel.  LED status lights on front continuously monitor the operating state of the unit.  Thermal shutdown protection built-in >+65°C.  Full remote control capability is available; use REM-10 remote plug-in unit.  Continuous-duty amps are straight amps only and most can have a relay bypass added (option).
         Receive GaAs FET pre-amplifier option is also available. Preamp GaAs FET device rated at .5db NF with +18 dbm 3rd-order intercept point.  The result is superior weak signal reception with improved strong signal intermod rejection.
         Excellent electrical and mechanical construction integrity using the best quality components and workmanship.  All models are manufactured in U.S.A. and carry a 1 year limited warranty.  Designed to ICAS ratings and meets FCC part 97 regulations.  Consult factory for special requirements.
Configuations
         Internal T/R-switching (rf-sensed or hard-key PTT) is available as an option for compatability with two-way radios. Linear all-mode operation (AM,FM,SSB,CW,Data) with option for automatic T/R or P.T.T. switching incorporates adjustable relay delay control. Remote control capability also available to remotely switch in/out a trunk-mounted amplifier  
         T/R-switched amplifiers have user friendly controls are mounted on front panel with all RF and DC cables attached out of sight on rear panel. LED status lights on front continuously monitor the operating state of the unit. Thermal shutdown protection built-in >+65oC.          Receive GaAs FET pre-amplifier option is also available. Preamp GaAs FET device rated at .5db NF with + 18 dbm 3rd-order intercept point. The result is superior weak signal reception with improved strong signal intermod rejection.  
Type Description
         VHPA Series  -  High-output power amplifiers and larger size.  Recommended for output powers up to 400 Watts.  Duty is intermittent and has thermal switch protection.  Size/Wt is 3 x 10 x 11" (h,w,d), 9 Lbs.  VHPA is rated to 600W with special copper heatsink
         CD/fn (-RA)  -  Continuous-duty, rack-mount, high-power amplifiers.  Cooling is from forced-air (dual-redundant fans) with airflow from front-to-back.  Size/Wt is 5 x 19 x 15" / 18 Lbs.
Accessories
         MMB-2   -  Mobile-Mount Bracket for HPA/VHPA amplifiers.  FAN-VHPA   -   Cooling Fan+Bracket for VHPA amplifier.    REM-10   -   Remote control unit.
Views/Descriptions/Options
50-54 MHz VHPA Amplifiers
Model    Pin   Pout  VDC A Conn Type $
05612G 20 600 +28 32 N VHPA 1388
05612RA 20 600 +28 32 N CD/fn 1683
144-148 MHz VHPA Amplifiers
Model    Pin   Pout  VDC A Conn Type $
14612G 20 600 +28 32 N VHPA 1388
14612RA 20 600 +28 32 N CD/fn 1683
222-225 MHz VHPA Amplifiers
Model    Pin   Pout  VDC A Conn Type $
22612G 20 500 +28 28 N VHPA 1438
22612RA 20 500 +28 28 N CD/fn 1733
430-450 MHz VHPA Amplifiers
Model    Pin   Pout  VDC A Conn Type $
44612G 20 300 +28 16 N VHPA 1438
44612RA 20 300 +28 16 N CD/fn 1733
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