" There is one small label across the back plate the says FREQ. 70CM 2W-20W"
Your friend may have the D-15-N 420-450 MHz AMPLIFIER
The MIRAGE D-15-N represents the latest in 440 MHz Power Amplifiers. It
incorporates features that make it the most versatile and useful amplifier
available today.
The D-15-N will amplify FM, SSB, and ATV signals.
SPECIFICATIONS
FREQUENCY RANGE.................... 420-450 MHz
POWER............................................. INPUT: 0.1 - 2 Watts (2
Watts max.)
OUTPUT: 18 Watts or more for 2 Watts input -
intermittent duty cycle
MODES............................................. FM, SSB, CW, and ATV
POWER IN........................................ 1.5 1.0 0.75 0.5 0.25
POWER OUT....................................18 15 13 10 6
DC POWER ...................................... 13.6 VDC at 3 Amps nominal
FUSE................................................. 5 amps
IMPENDANCE................................. 50 Ohm input and output
SIZE................................................... 7-1/4" x 3-1/2" x 2"
WEIGHT........................................... 1.5 lbs.
INSTALLATION
The D-15-N may be mounted by using the optional brackets. The D-15-N must
have
adequate ventilation around the heat sink. Use of #10 or larger wire to
connect the D-15-
N to the battery is recommended. Use good quality 50 Ohm coax, between the
radio and
the D-15-N. RG-8U or the equivalent should be used between the D-15-N and
the
antenna. The antenna should be matched to better than 1.5:1 for the best
performance.
SWR less than 3:1 will degrade system performance. SWR greater than 3:1 may
cause
damage to the amplifier VOIDING ANY WARRANTY.
FRONT PANEL FUNCTIONS
POWER - ON/OFF ........................... This switch turns the power
amplifier ON and OFF.
SSB/FM............................................. Selects the relay time
delay for the mode of
operation. In either the SSB or FM position, the
amplifier is still biased for linear operation.
D-15-N Instruction Manual 420-450 MHz Amplifier
2
REAR PANEL FUNCTIONS
"INPUT"............................................ This connects to the
transmitter or transceiver.
"OUTPUT"........................................ This connects to the
antenna.
PRECAUTIONS
HEAT SINK TEMPERATURE........ The D-15-N must be mounted where air can
circulate over the heat sink.
INPUT POWER................................ Input power should not exceed 2
Watts. Higher
power than this may cause failure of the input
transistor. This will VOID ANY WARRANTY.
INTERNAL ADJUSTMENTS
"SSB DELAY".................................. This allows the relay delay to
be adjusted to any
desired delay. Access to this adjustment is through
the hole in the left side of the cover. Use a small
screwdriver to adjust the control.
FUSE................................................. A 5 Amp fuse is
located in the power lead. Should
the fuse "blow," determine the cause, and use the
exact type in the unit as a replacement.
IN CASE OF DIFFICULTY
1. Check for loose antenna or B+ connections.
2 Check SWR of antenna.
3. Look for bad or lossy coax.
TECHNICAL ASSISTANCE
If you have any problem with this unit first check the appropriate section
of this manual.
If the manual does not reference your problem or your problem is not solved
by reading
the manual you may call MIRAGE at 601-323-8287. You will be best helped if
you have
your unit, manual and all information on your station handy so you can
answer any
questions the technicians may ask.
You can also send questions by mail to MIRAGE, 921 HWY 25 South, Starkville,
MS
39759 or by Fax to 601-323-6551. Send a complete description of your
problem, an
explanation of exactly how you are using your unit, and a complete
description of your
station.
73,
Ken W2DTC
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|