DX Engineering DXE-AFHD-4 Instructions manual

AFHD-4® Universal Indoor-Outdoor AM/FM/HD Antenna

Dimmer switch - Neighbor’s dimmer switch - Fluorescent light - Computer - Touch lamp (even when turned off) - Automatic on/off night lights - Automatic outdoor yard

lights - Electronic bug and pest controllers - Light bulb that is about to burn out - Faulty electrical switch - Nearby television, plasma or LCD display - Neighbor using

fluorescent lights - Christmas tree lights & other blinking bulbs - Neighbor’s dimmer switch (apt. complex) - Cell phone chargers - Dirty insulators on nearby power pole

- Electric blanket - 120 VAC smoke detectors (battery operated OK) - Ionic Breeze or other electrostatic air purifier - Ultrasonic motion detectors - Appliances with
motors - Lap top computer power supply - Almost any wall mounted power supply that uses a switching design - Computer network "Cat 5 or 6" wiring

DXE-AFHD-4

The DX Engineering AFHD-4® AM/FM/HD Antenna is designed for easy outdoor or attic installation. With
rugged pro-quality construction, this low profile omni-directional antenna will bring out the best performance from

any receiver. This antenna delivers best-in-class AM/FM and HD radio reception over a single RG-6 cable.

AFHD-4® Antenna Features:

Digital and Analog reception on both AM and FM broadcast High Gain on both bands for greater sensitivity
Band splitter for optimal performance Easy to install; mast and wall-mount options included

Many audiophiles use high-quality classic or vintage receivers. HD listeners use the latest in digital technology. Why not have a pro-quality
antenna that will satisfy both kinds of listening? Old receiver or new, one of these DX Engineering AFHD-4® AM/FM/HD Antennas will bring
out the best in radio reception.

This kit includes the parts required to achieve high quality reception of
AM, FM and HD radio signals.

Antenna Location (Very Important!) - For optimum results the
antenna should be mounted outdoors as high above ground and roof
level and as far away as possible from any AM interference sources
(see Table 1). It can also be mounted in an attic, but reception will
depend on the roofing material and the insulation and siding materials.
Thermal insulation that uses aluminum foil backing or metal
roofing/siding material will shield the antenna from achieving good
reception. Most stone and stucco siding has wire mesh reinforcement
that will also block signal reception indoors. Before finalizing the
mounting location it is recommended to experiment with a few different
temporary locations. AM and FM reception can vary greatly as function
of the antenna's location.

AM Interference - Unfortunately in this age of digital entertainment,
AM radio has become the "weak sister" of features included in most
entertainment systems. Most receiver manufacturers are spending the
minimum possible amount on their AM tuning sections and the number of household sources of AM radio interference has increased
exponentially (see Table 1 below). Fortunately the emergence of Hybrid Digital (HD) AM radio technology is helping to cure some of these
problems but the best strategy for good AM reception is to first eliminate as many of the interference sources as is practical and then locate the
receiving antenna as far away as possible from the remaining interference sources. Using high quality well shielded, Quad RG-6 lead-in wire from
the antenna to the receiver will help reduce interference and optimize reception.

Omni-Directional antenna receives signals from 360 degrees Requires RG-6 coaxial cable (not included)

Table 1 - Some Sources of Common AM Interference

Cable Length, Type and Routing

Always use good quality RG-6 cable and do not run the cable more than 200 ft. The shorter the better for best FM reception.
RG-6 cable has a loss of about 2.8 dB I 100 ft at the high end of the FM band (108 MHz). For AM reception, RG-6 cable
loss is not an issue (only 0.33 dB per 100 ft at 1.7 MHz) but for best rejection of local AM interference, Quad-shielded RG-6
should be considered. In addition, do not run the cable in parallel with cat 5 cables carrying digital signals or in parallel with
AC power lines.

Antenna Mounting - The antenna L-bracket (Figure 1) should be first
mounted in place to either a wall (Figure 2), chimney or a pole (not
larger than 2 inches in diameter) as shown in Figure 3. The antenna
should be as high above ground level as practical and as far away as
possible from local AM interference sources and any structure
(including aluminum siding) that could block reception.

Figure 1 Figures 2 & 3

After mounting the L-bracket,

Receiver Mode

Reliable Good Quality

Daytime Reception

Test Conditions

FM Stereo

80 Miles

Receiver:

Sangean HDT-1X

FM HD

50 Miles

Cable Length (antenna to receiver):

200 feet RG-6 cable

AM (Mono)

90 Miles

Antenna height above ground:

20 feet

AM HD

50 Miles

Terrain:

Flat

screw the antenna rod into its
base and tighten with a wrench.
Wire the components as shown
in Figure 4. Make sure that the
black wire from the coax- to- twin
lead adaptor is connected to the
ground input of receiver's AM
antenna terminals.

Figure 4

Typical Installation

AFHD-4® Specifications:

Antenna length: 48 inches Antenna Beam Width: Omni-Directional AM capture length: 300 inches Ground plane required: None
Frequency of operation: AM Band 500 KHz to 1750 kHz - FM Band 88 MHz -108 MHz

AM / FM Band Separator Performance:

Pass-band loss: < 1 dB AM load impedance: 300 ohms FM load impedance: 75 ohms

Reception Performance:

These results will vary as function of the antenna’s height above ground, the power of the transmitting station, the transmitter’s antenna beam

pattern, the local terrain and the quality of the receiver utilized. Table 2 shows actual reception test results for the antenna mounted 20 feet above
ground over flat terrain, using a Sangean Model HDT-1X as the receiver with 200 ft of cable between the antenna and receiver.

Table 2 - Reception Capability

Technical Support

If you have questions about this product, or if you experience difficulties during the installation, contact DX Engineering at [phone]. You can also e-mail us at:

For best service, please take a few minutes to review these instructions before you call.

Warranty

All products manufactured by DX Engineering are warranted to be free from defects in material and workmanship for a period of one (1) year from date of shipment. DX Engineering’s sole obligation under these
warranties shall be to issue credit, repair or replace any item or part thereof which is proved to be other than as warranted; no allowance shall be made for any labor charges of Buyer for replacement of parts,
adjustment or repairs, or any other work, unless such charges are authorized in advance by DX Engineering. If DX Engineering’s products are claimed to be defective in material or workmanship, DX Engineering
shall, upon prompt notice thereof, issue shipping instructions for return to DX Engineering (transportation-charges prepaid by Buyer). Every such claim for breach of these warranties shall be deemed to be waived by
Buyer unless made in writing. The above warranties shall not extend to any products or parts thereof which have been subjected to any misuse or neglect, damaged by accident, rendered defective by reason of
improper installation, damaged from severe weather including floods, or abnormal environmental conditions such as prolonged exposure to corrosives or power surges, or by the performance of repairs or alterations

outside of our plant, and shall not apply to any goods or parts thereof furnished by Buyer or acquired from others at Buyer’s specifications. In addition, DX Engineering’s warranties do not extend to other equipment
and parts manufactured by others except to the extent of the original manufacturer’s warranty to DX Engineering. The obligations under the foregoing warranties are limited to the precise terms thereof. These

warranties provide exclusive remedies, expressly in lieu of all other remedies including claims for special or consequential damages. SELLER NEITHER MAKES NOR ASSUMES ANY OTHER WARRANTY
WHATSOEVER, WHETHER EXPRESS, STATUTORY, OR IMPLIED, INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS, AND NO PERSON IS AUTHORIZED TO ASSUME FOR DX
ENGINEERING ANY OBLIGATION OR LIABILITY NOT STRICTLY IN ACCORDANCE WITH THE FOREGOING.

©DX Engineering 2019

DX Engineering®, DXE®, DX Engineering, Inc.®, Hot Rodz®, Maxi-Core®, DX Engineering THUNDERBOLT®, DX Engineering Yagi Mechanical®, EZ-BUILD®, TELREX®, Gorilla Grip® Stainless Steel Boom Clamps,
Butternut®, SkyHawk™, SkyLark™, SecureMount™, OMNI-TILT™, RF-PRO-1B®, AFHD-4® are trademarks of PDS Electronics, Inc. No license to use or reproduce any of these trademarks or other trademarks is
given or implied. All other brands and product names are the trademarks of their respective owners.
Specifications subject to change without notice.

DXE-AFHD-4-INS Revision 2a

© DX Engineering 2019 - 1200 Southeast Ave. - Tallmadge, OH 44278 USA

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