To exit this window
click here : CLOSE

Current Updates and Alerts

July 28, 2014

Check out Brad, W3BRF, comments and details in the "Customer Comments on Alpha Delta Antennas" section. He has attained DXCC and over 400 DX contacts using his DX-EE attic mounted antenna with just 4 watts CW. He says "Alpha Delta Rules the Ionosphere". Wow, what performance!

November 29, 2013

Just a reminder that any HF dipole needs to be put up “in the clear” away from any surrounding objects like roof tops, gutters and the like. We get inquiries that the antennas don’t tune properly, only to find out they are installed on or near a roof top or gutters or even along chain link fences. Any part of the antenna wire must be at least 20 ft. from any part of a roof or gutters. We test our antennas as an inverted-V with the center at 35 ft. and the ends at 10 ft. Flat top configurations work well too but the antennas must be “in the clear” for best tuning and performance. These requirements hold true for ANY HF antenna. Some report good operation with non standard or low to the ground installations, but they will work BETTER as stated above.

August 26th, 2013

We are known by the company we keep;

Our production facility is certified to the high quality standards of ISO-9001-2008. This applies to all of our products.

Ft. Monmouth tested and approved our TT3G50 for the U.S. Defense Logistics Agency (DLA) for use in all U.S. military and NATO applications, worldwide. Cage Code 389A5.

We are registered with the U.S. Government "System for Award Management", SAM system, at <>. This replaces the older CCR system for contractor registration.

We are registered with the U.S. Navy Space and Warfare System (SPAWAR).

We are registered with the National Security Agency (NSA) for electronic and component purchases.

For a partial list of registrations and approvals, check our link "Commercial/Government/Military Applications and Approvals, etc".

With our certifications, registrations and approvals, our products are UNIQUE in the Communications and Amateur Radio Industry for state of the art design and high quality production!

June 21, 2013

Alpha Delta is approved and registered in the new U.S. Government "System for Award Management", SAM, system for government/military contracts. This system has replaced the old CCR, Central Contractor Registration, system that is no longer active. Check into . Then enter our Cage Code 389A5 or DUNS number, 009617192 in the public search site and you'll find our details.

May 9, 2013

We have been asked why we don't make "end fed" random wire type antennas. The answer is simple. We want to provide the most efficient antennas possible. An "end fed" antenna has to use a transformation device to convert the end impedance, which can be several thousand ohms, down to 50 ohms for the coax. These devices, based on their design, have a certain amount of loss.

We have several reports from those who have done direct comparisons between the "end fed" types and our center fed half wave dipoles. They report the dipoles have a higher measurable signal performance than the other design types.

Yes, the "end fed" types are convenient but Mother Nature says you can't have something for nothing!

April 16, 2013

Based on questions we're getting on antennas, this is a reminder on installations;

A. Quarter wave slopers, Models DX-A and DX-B, MUST be installed on grounded metal towers or metal masts with an HF size beam on top to act like a "capacity hat" for proper tuning and performance. VHF and quad/spider type antennas do not provide an adequate aluminum square area. This is covered in our instruction sheets. We get questions like "can I put it up on a wood pole or tree with no beam on top?" The answer is no, it won't work. This is not a requirement for half wave dipoles.

B. Half wave dipoles and sloper wires MUST be at least 20 ft. from roof tops, gutters or other surrounding objects along ANY part of their run. The "included angle" between the wires across the feed point of dipoles MUST be greater than 90 degrees in either horizontal or inverted-V installations. Exact opposite wires of a dipole would have an included angle of 180 degrees, for reference. The greater the included angle the better, to minimize coupling.

C. Attic installations have a tremendous amount of coupling to the antenna and detune the antenna. Some installations work quite well and some don't. All require low power operation (<100 watts) and a wide range antenna tuner. Check our WEB site for details.

March 14, 2013
The best way to contact us is via e-mail. General product questions and orders, and/or order status: Jim, WB4ILP
Technical questions on antennas only: Don, W8AD
We can not answer questions on non-standard antenna configurations or antennas installed "not in the clear". Some work and some don't, depending on the installation site.

We have found some voice mails are garbled and hard to decipher with no specific product questions stated. These are hard to refer to the right department. If you do leave a voice mail be sure it has your phone number stated clearly and specific, complete product questions given so we can prepare a proper answer.

On any questions, be sure to describe the complete installation site, equipment configuration, SWR "runs" and any other details that will help us respond.

March 13, 2013
Many customers are over tightening the set screw over the D-4 gas tube in the DELTA switches and thus distorting the thru-lines under it causing switch malfunctions. The screw should NOT be adjusted at all from the factory setting. The information about that is in our instruction sheets.