HF PACKER
AMP
V4R6
Page 42
Section SIX – Specifications and Operation
Specifications
•
The drive is 0.1 - 5W RF 160-10M
•
Input impedance: 50 ohms
•
Control: Carrier operated or PTT (RCA jack)
•
DC Input: 12VDC, 10A max (9-16V range)
•
Standy current: 23-29mA
•
Chassis mount Power Pole Connector 30A contacts
•
Power Switch: Rocker Power Switch
•
RF In: BNC 5W Max Input (if 9dB pi-network installed)
•
RF Out: SO-239
•
Power Out: nominal 30-35W Average 160 - 10M.
•
100% Modulation without distortion (according to 2-tone
tests)
•
Weight: 1lb 15 oz.
•
Case Size: 6.5 x 3 x 2.25 inch
•
Front panel band switch knob: 0.75 inch additional length
•
Rear panel controls: 0.5 inch additional length
•
Heat sink Size: 2.25 .2.25 x 0.8 inch
•
Fan Size: 2.25 x 2.25 x 1.2 inch (60mm) 12V, 24 CFM
LP Filter Switch: 6 position 160, 80/75, 60/40, 30/20, 17/15,
12/10
•
Front panel Switch: ON/BYPASS
•
TX LED Indicator
•
Case painted black with white silkscreen legends front and
rear.
•
Two piece 20ga galvanized steel case,
•
Rubber Feet
•
Unused Mode Jumper (now autoset) for optimized hold time
of T/R relay
•
Digital control, RF sense and sequencing of T/R relay and
Intelligent Power Switch and fan control.
•
Amplifier: IRF510 MOSFET Push-Pull Class AB1 Linear
Amplifier.
•
Bias set to 100mA per transistor. Easy pot adjustment.
•
A test Jumper activates the PSU for adjustment.
•
Fan option not required for intermittent SSB operation.
•
For high duty cycle CW or digital modes, either reduce drive
or include a user supplied fan. Internal fan jack provided.
•
Fan Operation SSB and CW at full speed.
•
Spurious products -40 dB or better @ 35 watts
•
Harmonic content -45 dB or better @ 35 watts
•
Load tolerance 2:1 or better SWR recommended
•
CW/SSB mode auto selection
Operation
Amplifier operation theory is described in Section One with the
practical aspects expanded on in this section.
Choice of XCVR: The HFPA V4 Amp is compatible with most
QRP XCVR’s but accommodates the FT817 RF Power Input
choice of 5W RF drive as the default power input setup. The pi
resistive network on the amplifier front end can be customized
for other attenuation levels to work from the range of 0.1W up
to a practical 5W limit. Contact HF Projects for more specific
details.
CW and Digital Modes: The AMP provides excellent operation
for digital modes including PSK. Monitor the temperature.
Adjust drive accordingly.
Содержание PackerAmp V4
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