Technical Data

  • The Benefits of Greyline Antennas: 'Smart, Rugged, Elegant' Antenna Design

    List of Benefits of Greyline Performance Antennas: HOA Approved Nationwide XYL Approved owing to elegance & security. Compliments are common from fussy neighbors & discerning family too. No Radials needed to achieve high-performance. Quieter than Verticals it's a Vertical Dipole: Every...

  • Will this work in the FT8 mode and digital modes?

    Q. Will this work in the FT8 mode? A. YES! We see the maps of our customers cover the entire planet with FT8. No joke.Here's are three maps of live-signals around the world for you: PSK: https://pskreporter.info/pskmap.html CW: http://www.reversebeacon.net/srch.php (find any clear frequency an...

  • How do Greyline DX antennas compare with each other?

    The lower bands get a little boost when going to the 28' version. The 20' version already works well on its own and when stacked against the various market competitors. With the push of a button, you are back on all bands, with ease!

  • Do I need a tuner at the base of the antenna or can a Tuner in the Shack work too?

    DO I NEED A TUNER AT THE BASE OF THE ANTENNA OR CAN A TUNER IN THE SHACK DO THE JOB? We get this question often and we do urge our radio op friends to consider using a remote tuner at the antenna if possible for "perfect" results. Still, many (50/50!) find great success on all bands using thei...

  • Let's learn: RF Chokes, RFI Suppression, and Lower Noise (QRN)

    Let's learn about RFI Suppression and RF Choking to better help you understand and thus choose which direction you might wish to go in regards to RFI and RF Choking at your shack. Those who find noise and eliminate it will hear stations further away sooner than the guy who doesn't. The RX Noise...

  • Does the DX Flagpole require a balanced or unbalanced ATU tuner?

    A. This reveals a common misconception about balanced/unbalanced antenna systems. In a practical sense, all that balanced means is that a source of RF voltage/current is not connected anywhere to a ground reference. Said in a simpler way, to be balanced an RF source must "float." It is true that...

  • Is the DX Flagpole Antenna Resonant or a non-resonant Antenna?

    A. Ham radio enthusiasts generally expect an antenna to have a low SWR. Otherwise, they feel, “It won’t get out well and I might even damage my finals.” What’s your opinion? Is this a universal truth? Here, look at this: RESONANT MODE Here the antenna is operated at or near its natural resonant ...

  • What is the quality of the materials of the Greyline DX antennas?

    We didn't cut any corners! Only premium materials are used throughout the system. The AI tubing is Made in the USA, double-dipped, double-walled, high-grade 6000 series aircraft-grade aluminum we are very proud of, 2-inch OD or 2.25-inch OD top to bottom, industrial-strength fiberglass insulators...

  • What is the max power limit or power rating of Greyline Performance Antennas?

    Q. What is the max power rating of the Greyline Flagpole Antenna and Vertical Antennas? A. There is no max power limit or power rating for Greyline Performance Flagpole Antenna and HF Vertical Dipole Antenna line. In fact, it is limited only by the power limitation of your choice of (ATU) Ante...

  • What is the wind rating of Greyline Performance antennas?

    What is the wind rating of the Flagpole Antenna? These antennas have been engineered to withstand 90-155 MPH wind gusts according to “Guide Specifications for Design of Metal Flagpoles,” ANSI/NAAMM FP 1001-07. This was used rather than ANSI/TIA-222-G (regulating antennas and towers) as this st...

  • How to Choose the right Feedline, Coax Cable

    How to Choose the right Coax Cable Summary: Greyline promotes LMR-400 as the best performance for the money vs. lesser and/or highest quality coax owing to the fact most of us require less than 200' and more likely less than 100' runs to our antenna site, therefore, the equation of loss per-fo...

  • Ladder Line, Twin Lead, Window Line vs. Coax

    Why ladder line? First, to be clear, plug your coax into the antenna system just like any other antenna. That said, yes, we use a segment of ladder line within the feed line kit area of the antenna at this time. We have evolved to the fact that ladder line is likely the best option, offering t...