Results 1 - 52 of 52
Should a balun be used on a G5RV wire dipole antenna?
A balun or choke should NOT be used on a G5RV wire dipole. The classic G5RV 102 ft. wire dipole consists of 51 ft. legs with a center feed of twin lead or ladder line that is about 34 ft. long. That section is also part of the radiating antenna, an...
How do I connect the RPA-1 Receive Preamplifier to my transceiver?
Connecting the RPA-1 to a Transceiver
Connecting the DX Engineering Receive Preamplifier RPA-1 for optimizing weak signal reception on your main (transmitting) antenna is very easy. The RPA-1 is superior in specifications and performance to other outboard HF preamps and most that are bu...
How do I mount my surge suppressor on the DXE-UE-2P enclosure?
Mounting a POLYPHASER IS-RCT Surge Suppressor to a DX Engineering DXE-UE-2P Enclosure
The part you require for mounting the rotor controller protector onto our universal enclosure plate is this DX Engineering Flange Mounting Bracket. ...
What is the weight limit on this mast?
ROHN Products, LLC, the manufacturer of the 9H50, H20, H30, H40 and H50, does not provide a weight limit or wind load capability for these Telescopic Masts. They are intended to be used for TV or FM antennas or small VHF/UHF verticals. Their catalo...
Will you do MARS modifications?
Our Policy on MARS Modifications
Due to FCC regulations and manufacturer's warranty requirements, NO Amateur Radio dealer may legally open and modify the transmitting frequency range of a new Amateur transceiver. The modification of an Amateur Radio transceiver that you own must be...
Can I mount an Egg Beater 2-3 ft. above a Hexx Beam?
2 Meter Egg Beater and Hexx Beam Antenna
The HEXX Beam may physically support the Egg Beater antenna with a non-metallic extension of the fiberglass Center Post. However, the proximity of that antenna and the supplied ground plane that comes with, it will probably adversely affect both ant...
What's wrong with my multi-band trap antenna?
One Band is Intermittent
On some trapped antennas, there is a rare case that occurs that causes an intermittent high SWR only on a high frequency band, such as 15 meters, while the antenna has good SWR and is functioning normally on all other frequency bands, such as 10 and...
The soil at my home is sandy and rocky. What kind of radial system do I need?
Rocky, sandy soil has poor conductivity. For a radial system to perform well under these conditions, you need many radials; 1/4 wavelength or longer at the lowest operating frequency. ...
Can my well casing or a chain-link fence take the place of radials?
The extra long pipe in a well doesn't make a good radial system, but it could provide extra lightning protection. Chain link fences have a significant amount of metal surface area, but sections are often corroded or poorly bonded. This makes&n...
Can I paint my vertical antenna?
Avoid paints with metallic content. Otherwise, painting won't affect the performance of your antenna. You might also consider camouflage tape, which can be purchased at outdoor and sporting goods stores. ...
Can you provide schematics for your products?
Advice for Needed Repairs, Testing
We do not supply schematics for our products. Instead, we suggest sending your unit for complete service and testing to assure that you will enjoy complete functionality up to or beyond original specifications. Follow this link for more information...
Do you sell COMTEK replacement parts?
COMTEK Replacement Parts
We do not offer replacement parts. In our experience, many self-repair attempts have resulted in dissatisfied customers. However, we do offer service for all COMTEK products. Please follow this link for more information about Our Service, Testing, ...
Can I mount a Hexx Beam antenna on something other than a tower?
Alternative Mounting Methods
Many amateur radio operators have purchased the DXE Hexxagonal beam and used telescopic masts for mounting it. (They do require guying per the manufacturer's instruction recommendations.) Follow the links below for some antenna mounting option...
Why do I need to run 150 ft. of coaxial antenna cable to a 43 ft. vertical antenna?
Impedance and Tuning
The function of the 150 ft. of RG-213 is to accomplish the appropriate impedance rotation that will allow the antenna to be tuned with your wide range tuner on all bands, 160 through 10 meters. For example, if the system is installed with only 75 ft...
Can I curve the feedline coax around the yard?
DX Engineering Verticals 150 ft. Feedline Requirement
The coax run can be straight or curved. However, it cannot be bunched together or coiled. ...
Can I mount antennas above my Hexx Beam by extending a mast through the center?
Hexx Beam Mounting
The short answer is "no." Our Hexx Beam is designed for mounting at the top of a mast. Other mounting configurations may cause undesirable interaction with the Hexx Beam's elements. ...
How high should a dipole be off the ground?
For best results, dipoles should be at least 1/2 wavelength above ground level. For the lower bands, especially 160-40 meters, this can become impractical--place your dipole as high as your situation allows. ...
How do I protect my radio station from lightning?
Lightning Protection and Grounding
We offer reprints of lightning protection articles originally published in QST at the following links: Lightning Protection P1 Lightning Protection P2 Lightning Protection P3 ...
I'm installing a 43 ft. ground-mounted multi band vertical. Will a balun help with tuning?
We recommend a 4:1 UNUN mounted at the antenna, in conjunction with a wide-range external tuner in your shack. Most internal radio tuners don't have sufficient range to properly tune these antennas. If you plan to tune your antenna for 80 and 160 m...
How do I get better SWR readings on my 5BTV for 40 and 80 meters?
The DX Engineering Vertical Antenna Matching Network
Assuming you have completed the trap calibration as detailed in the DX Engineering New Assembly and High Performance Installation Instructions (pg. 39), the DXE-VMN-1 would be your next step. The DXE-VMN-1 Vertical Antenna Matching Network is ...
What is the best wire for ground mounted radials?
Since the broadcast industry has always used bare solid copper wire, it has become the standard for radial systems. However, it doesn't make any practical difference whether the copper wire is stranded or solid, bare or insulated. Some hams find th...
How do I fix a noise interference problem?
Locate the Source of RFI Noise
To start, follow the steps suggested by RFI Services: " How to" Locate Radio Frequency Interference (RFI) or Television Interference (TVI) in a Home. If you are still experiencing a noise problem, take a walk around your neighborhood with that same...
How many radials do I need for my ground mounted vertical antenna?
We recommend 30 radials, each wire about 1/4 wavelength long on the lowest frequency of operation. Adding more radials, up to 60 total, will produce a noticeable improvement. ...
Do you sell replacement parts for a Hy-Gain antenna?
Hy-Gain Replacement Parts
We are a Hy-Gain dealer, but we do not stock replacement parts. You will need to contact Hy-Gain directly: Phone: 1-800-973-6572 or 1-662-323-9538 Website: www.hy-gain.com ...
Can I mount a vertical antenna along the side of my garage?
Recommended Antenna Location
Locating the antenna that close to your garage, even using standoffs, will cause the antenna to detune and not work properly. It should mounted away from structures, local noise sources, or other metallic objects that can affect the tuning, radiatio...
How do I know which balun to choose for my installation?
W8JI, who is one of our antenna consulting engineers, has developed a "Choosing the Correct Balun" Guide. Please follow this link: Choosing the Correct Balun. ...
How do I tune my DX Engineering Hexxagonal Beam?
Proper Tuning Method
The following instructions were provided by the developer of the Broadband Hexbeam, Steve Hunt, G3TXQ. Try to get the antenna up to it at least 13 ft. (4m) high for testing so there will not be a large frequency shift when you lift it to its fina...
I don't have room for a lot of radials on the ground. What can I do?
Good results have been obtained with as few as 20 radials, 1/8-wavelength long at the lowest frequency. Put down as many radials as you can within the space you have available. Be sure not to cross them, bend them around buildings, or zigzag them. M...
How many radials do I need if I mount my vertical antenna on the roof?
A minimum of two radials cut to resonant length are needed for each band of operation - more is better. They should be spread evenly around the antenna and drooped slightly downward if possible. ...
What balun do I need for a coax-fed long wire antenna with coax shield grounded to the tower?
The suggested balun is a 4:1 ratio current balun for long wire antennas. The DX Engineering part number of the correct balun is either the DXE-BAL200-H10-AT or the DXE-BAL200-H11-CT current balun designed to work with an antenna tuner. ...
Can the Ameritron AL-80B be modified for 240v at 50Hz?
The power transformer of the Ameritron AL-80B has fourteen different voltages available on the primary, and is rated at full power on both frequencies (50 Hz and 60 Hz). Please review "JUMPER CONNECTIONS" on Page 12 of the AL-80B Manual. ...
Why does my coax stripper jam when I try it with LMR-400UF?
The DXE-UT-8213 Coax Stripping Tool
There are several cable types on the market which use a jacket material which is soft and spongy, claiming ultra flexibility. The DXE-UT-8213 cutter blades are designed to cut through the more rigid materials encountered with quality RG-213/U, LMR-4...
Do I need radials and how long should they be?
Vertical Antenna Mounted 10 ft. Above Ground
Shorter vertical antennas, such as Hustler's BTV series, Hy-Gain's AV-14AVQ, AV-18AVQ, and similar antennas with trap or coil loading under 30 ft. in height are good candidates for above-ground mounting. We don't recommend elevating the popular 43 f...
Which cable and jumper module do I need to use the Signal Link Interface?
Link to Instructions
Please follow this link to the Tigertronics SignaLink Instructions. ...
I lost the wing nuts on my DXE balun. What size do I need?
The wing nuts are 10-32 Stainless Steel for this and similar DXE Baluns that have ceramic insulators. ...
Can I install a vertical antenna on a metal roof?
Over the years, many Amateur Radio operators have successfully used a metal roof as the ground plane or radial system for their HF vertical antenna. This is possible with a metal roof on a home, barn, garage, carport, RV, porch and metal sheds or aw...
How do I tune the Alpha Delta DX-EE antenna for each band?
The DX-EE is a parallel dipole antenna, similar to a fan dipole. It has a wire tuned for each band. However, the "top" wire combines 20 and 40 meters. Any adjustments you make to the 20m band (the first leg of this top wire before the coil) will als...
How do I modify my Ameritron amplifier for 10 and 12 meter operation?
Solid state Ameritron amps, such as the ALS 500/600/1300 require the AMR-Mod-10 which easily installs in the amplifier. There are several versions available for use based on the model and serial number. Please Contact Us to make sure you choose the ...
Does the length of ladder line make a difference?
DXE-WA Series Multi-Band Dipoles
The feedline must be in odd multiple lengths of 1/8 wavelength on the lowest operating frequency to optimize the impedance presented to the balun over the frequency range of the antenna. For additional information and formulas, please see our Anten...
Can I run my coax cable on the ground, across the radials?
It's best to bury the coaxial cable 6-8 in. below the radial field. The coaxial cable should run parallel to the radials. ...
Can I use chicken wire in place of radials?
Chicken wire is not a suitable alternative for a radial system. Where the wires intersect, they are simply twisted together. This provides mechanical strength, but the wires are not bonded together properly for electrical conduction at RF frequenci...
How do I test my 4:1 balun?
Antenna is Getting Harder to Tune
A straightforward way to test a 4:1 balun is as follows: Disconnect the output side of the balun from your antenna or ladder line. Locate a NON INDUCTIVE (Carbon composition, for example) 200 ohm resistor and connect it directly across the outpu...
What will happen if I put all the radials under one side of a vertical antenna?
The purpose of ground-mounted radials is to improve ground conductivity. The side that doesn't have radials will exhibit less ground conductivity and a small reduction in signal. ...
Can I convert my Hustler BTV to 160 meters?
There are several serious caveats that make such a conversion not really viable: The bandwidth would be very narrow. It will almost limit you to a single frequency on 160m without making a physical adjustment to the antenna every time you want to...
What should I do for periodic antenna maintenance?
Use a permanent marker to mark the parts and locations during disassembly. Clean all antenna aluminum connections with Scotch-Brite. Apply new Penetrox A Lubrication to the aluminum connections. Do a trap tune-up check to make sure th...
Can you add 6 meters to the Hexx antenna?
Our engineering analysis confirmed the original information from the designer of the broadband hexbeam, Steve Hunt, G3TXQ regarding adding 6 meter elements to the 5-band hexbeam. The addition of 6 meters elements to a hexbeam results in poor perfor...
What kind of balun do I need?
Recommendation for a Horizontal Full-Wave Loop for 80-10 Meters
If you're using coax to the feedpoint, we'd typically recommend a 4:1 current balun. If you're feeding the antenna with ladder line, use a 1:1 current balun just outside the house and use a short run of coaxial cable to your rig or tuner. ...
How do I improve the 40m band SWR on a Hustler 4BTV
2:1 SWR, 32 ft. Long Radials
We have found this alternate procedure usually solves 40m SWR issues for most of our customers: Before starting, mark the starting locations of the tubes and trap covers so that you can restore the lengths if necessary. Shorten the tubing adjust...
What is an UNUN?
Definition and Usage
The UNUN is a "UN balanced to UN balanced" matching transformer. It is used for non-resonant vertical antennas like our 43 foot or 33 foot models. ...
Can ice and snow change the SWR frequency?
Snow and ice build-up can shift the SWR curve of an antenna to a lower frequency. It is relatively rare in most parts of the country, so it isn't something that many of us need to worry about. The snow or ice clinging to the radiator is behavin...
How do I get a copy of the instructions?
View or Download Instructions Sheets
When instructions are available online, you can find them on the part detail page. On Our Web Site Find the part you want. Click on it to see the part details. Click on the "Documentation" tab Click the blue document title to view the ...
Can you fix my equipment?
Our Service, Testing, and Repair Program
We offer complete service, testing, and repair of the following brand products: DX Engineering COMTEK Rig Expert Analyzer How do I get started? Ship your product (prepaid) to: DX Engineering ATTN: Repair Department 3800 Mogadore I...