feature of FMA Direct receivers. Reducing antenna length
will
reduce range, however.
Proceed carefully, removing only a short amount at a time and be certain to ground range
check the receiver with each incremental reduction in antenna length.
NEVER CUT THE
ANTENNA SHORTER THAN 18 INCHES!
A special note to helicopter pilots concerning
standard FM receivers and antenna placement: FMA Direct receivers are tested thoroughly
in all types of aircraft including helicopters. Helicopters often create a challenge because
they generate RF noise and heavy vibration from fast-moving parts. In order to improve
reception in a helicopter, it is recommended that you route the antenna of the receiver as far
away from the tail boom as possible. This is particularly true of carbon-fiber booms. Nylon
push rod material mounted to the underside of the skids provides a good channel through
which to route the antenna. When hooking up a servo to your receiver, use TABLE 1 and
FIGURE 1 to check its plug wire color orientation.
•
RANGE TEST
To assure proper performance, the Fortress 2000 series receiver must be range tested with
the "host" transmitter. The major reason for this important test is that over time, all R/C
transmitters are susceptible to de-tuning and frequency “drift”. To ensure the utmost in
secure RF reception, current technologies for narrow-banding used in FMA designs can
actually place a higher demand on transmitters. Power level and frequency accuracy of your
transmitter are more important than ever before. Therefore, for the initial range check and in
rare cases when you suspect degradation of performance from your R/C system, FMA would
like to suggest the following guidelines: Begin by placing the receiver on a cardboard box or
another non-metallic surface to elevate it about 2 feet off the ground. Connect only one
servo and the battery direct. Do not install a switch harness for the initial range test because
switch harnesses are often the cause of poor range. Perform the range test with the receiver
antenna fully extended VERTICALLY into the air on a dowel rod or the like, and the
transmitter antenna collapsed. Apply power and walk away from the receiver moving one
stick on the transmitter. You should obtain at least 200 feet of line-of-sight ground range if
everything is operating properly. If any loss of servo control occurs, the system must be
calibrated by an FMA service station. CALL (301) 831-8980 for FMA Direct technical
assistance. In certain cases, the FMA service station may ask you to send in your
transmitter along with your receiver.
•
ACCESSORIES:
Aileron extension cables, Y-harness, switch harness, and numerous other accessories as
well as a full line of servos, batteries, and chargers are available for use with your FMA
receiver either direct or from your local FMA dealer.
FMA LIMITED WARRANTY ON RADIO RECEIVER PRODUCTS
FMA, Inc. warrants this receiver to be free of manufacturing defects for the term of one year from
the date of purchase. Should any defects covered by this warranty occur, the receiver shall be
repaired or replaced with a unit of equal performance by FMA, Inc., or an authorized FMA service
station.
LIMITS AND EXCLUSIONS
This warranty may be enforced only by the original purchaser, who uses this receiver in its original
condition as purchased, in strict accordance with the Fortress 2000 owner's manual. Receivers
returned for warranty service to an FMA service center will be accepted for service when shipped
post-paid, with a copy of the original sales slip or warranty registration form, to the service station
advised by FMA, Inc.
THIS WARRANTY DOES NOT APPLY TO
1.
Consequential or incidental losses resulting from the use of this receiver.
2.
Damage resulting from accident, crashes, misuse, abuse, neglect, electrical surges,
reversed polarity on connectors, lightning or other acts of God.
3.
Damage from failure to follow instructions supplied with the product.
4.
Damage occurring during shipment of the product either to the customer or from the
customer for service (claims must be presented to the carrier).
5.
Damage resulting from repair, adjustment, or any alteration to product by any one
other than an authorized FMA technician.
6.
Installation or removal charges, or damage caused by improper installation or
removal.
CALL (301) 668-7614 FOR INFORMATION ABOUT SERVICE AND WARRANTY REPAIRS.
OWNER’S MANUAL
8 CHANNEL FM UNIVERSAL
RADIO CONTROL RECEIVER
INTRODUCTION:
Thank you for purchasing the FMA Direct Fortress 2000 FM receiver. Fortress 2000
receivers are designed to provide years of trouble-free operation. You may fly your
Fortress 2000 in anything from sport models to helicopters to IMAA legal quarter scale
aircraft with complete confidence. Available in two models, the Fortress 2000 supports
either Futaba/JR or “Old Style” Airtronics servo connector polarity. These high-
performance designs incorporate the latest advancements in RF technologies available
to the R/C industry. Superior RF mixer technology and advanced circuitry for detecting
and amplifying PPM information enable the Fortress 2000 to out-perform other single
and dual conversion designs presently offered. Heavy-duty, SMT construction on a
single, glass-epoxy P.C. board provides outstanding reliability. New, universal
operation makes user-programmable shift switching a snap. This means that the same
FM receiver can now be programmed to operate with any FM transmitter regardless of
the direction of the FM shift.
SPECIFICATIONS:
NOTE: PLEASE READ MANUAL COMPLETELY BEFORE OPERATION
SIZE:
2.18"L X 1.68"W X 0.82"H
WEIGHT:
1.0
OZ.
DESIGN:
DUAL CONVERSION, SUPER HETERODYNE
CHANNELS:
1-8
MODULATION:
FM / PPM (PULSE POSITION MODULATION)
FREQUENCY:
R/C CHANNELS 00 THROUGH 60 - U.S. LEGAL 50, 53, 72 MHz
ULTIMATE BANDPASS: ± 8.5 KHz @ >55 dB DOWN
USABLE SENSITIVITY:
> -95 dBm
3OIP:
+12 dBm
OPERATING VOLTAGE: +3.5V TO +26V DC LIMITED ONLY BY SERVO REQUIREMENTS
LEGAL USE:
MEETS AMA GUIDELINES/FCC 1999 RADIATION REQUIREMENTS
FMA, Inc.
5716A Industry Lane
Frederick, MD 21704
Sales: (800) 343-2934 -Technical: (301) 831-8980
