Common Questions from Customers


Answers to common questions we receive that will guide you on how to order your desired Greyline Performance Antenna System. 

Checklist for Ordering a Greyline Performance Antenna System

Some operators ask, "What do I need for a complete system?"

Here is a Checklist for your shopping cart at Greyline:

  1. Choose your Greyline Antenna. DX Vertical Antenna or DX Flagpole Antenna (both are vertical dipoles, no radials required for either, one of these is stealth. You guess which one.)
  2. Choose your desired, required, or allowable height of antenna: 12-16-20-24-28
  3. Your Remote Tuner selection should be determined by your power level needs or frequency usage needs. Some ATUs offer 160-6M, others 160-10M typically. Note impedance ranges are wider in some tuners which may help you on 80-160M. All tuners we have selected tune 160-10M or 160-6M HF radio coverage, most will tune as low as 160M. 
  4. Ground Kit: This is included with your antenna purchase (at this time).
  5. Feed-line Kit: This is included with your antenna purchase (at this time).
  6. Flag Kit (if you desire a Flagpole) is included when you purchase a Flagpole Antenna version. *You can add a Flag kit to a Greyline HF Vertical later if you wish.
  7. RF Choke: This is included in the Feedline kit to address CMC (common mode current).
  8. RF Choke Upgrade: Running more than 100 Watts? You might wish to add an additional RF Choke (500W and 3500W rated versions available) - a 2nd Choke is helpful on the radio end (behind the radio or amplifier) for Military-Grade RF Choking, and to remove possible QRN picked up on the coax along the way back to your radio. This is a popular choice for those wanting every dB possible on TX and RX. Can be added later, of course.
  9. Coax to Shack: Consider using LMR-400 or better. Coax length between the radio and the antenna site is inconsequential and does not change the performance of the antenna. There is no need for any "matching coax length" in our system.
  10. Note on Bundles: Add each desired element above to your cart separately for the best price. Prepared Bundles may not reflect any current price advantage.
  11. All Kits are currently included in the purchase price of an antenna. This includes the Ground Kit, Feed Kit, and Flag Kit.
  12. Shipping is included in the USA. DX shipments are typically 50-75% off UPS/FedEx/DHL rates based on your QTH.

Will this work on Digital modes such as Win-Link, FT8, etc.?

Yes. In fact, we have found this antenna with its high efficiency and low noise attributes offers even more value for emergency management agencies and digital mode operations alike. If you can't hear it, you can't work it.

How does Greyline Performance Flagpole Antenna Compare to other well-known HF Vertical Antennas on the market?


What is the difference between the Greyline Performance Antenna Systems? 

Graphic: Performance difference between the antennas: Looking carefully at the graph for the angle of signal and antenna gain comparisons you'll notice incremental increases in depth of signal penetration, on the lower bands mainly. We share a 43' vertical with radials as a comparison as well. "Pictures tell a 1,000 words," right?

Key: *80M-red | 40M-blue | 20M-green | 15M-orange

See that? Even the 12' HF vertical antenna holds its own, on 80M!

Notice the 20' and 28' have an even lower angle and punch for deeper DX performance. (to plot the 24' consider it's mid-range between the 20' and 28')

Customers report working 160M with the 16' DX Flagpole. That's great news! 


How to Choose your Greyline DX Flagpole Antenna or HF Vertical Antenna?

Let's be sure you are choosing the correct antenna system for your needs. 
Most folks will see little to no difference interchanging between a 20' and 24' antenna. That said, some seasoned expert radio ops have reported seeing a "night and day" difference. On paper, it doesn't add up but in real-world feedback, the extra 4' makes a difference. In any case, the added length does make life much easier for the ever-popular, lower-cost ATU matching networks on the lower bands, such as 80-160M.

Do I need a Tuner at the Base of the Greyline DX Flagpole Antenna or HF Vertical Antenna or can I use a desktop or shack tuner?

We get this question often and we do urge our radio op friends to consider using a remote tuner at the antenna. Still, many folks find great success on the bands using their manual or auto tuner in the shack, and they are very happy with the results.

With short coaxial runs to the antenna system losses may be overlooked. Some bury coax or ladder line (twin lead or window line) too for lowering losses. That's okay. We do believe strongly the tuner at the antenna is the best way to keep efficiency at the highest levels. Again, lots of radio ops are working the world with the tuner in the shack and everything in between. We will address in more detail, the differences and present options for alternative feeding and matching systems below.

Rig ATU: The tuner inside your radio is likely not strong enough to tune (owing to a narrow impedance, or tuning range) a multi-band antenna on more than a couple of the bands. These rig tuners are meant to resolve a rather small mismatch. As the Greyline OCF HF antennas are designed as non-resonant antennas they, therefore, require a quality matching network to achieve the high efficiency we have designed for you to enjoy across 160-6M. Remember, the remote tuner does the same job as the unsightly stubs, coils, traps, etc., only prettier. Your family will appreciate this!

Desktop ATU: Most desktop tuners on the market will do the job easily from 160-6M and this is a very popular method that works loads of DX and passes important traffic, we are sure of that. Please know, that the tuner at the vertical is the lowest loss option that we offer to feed your antenna system. If you choose this method we ask you to consider using best-of-breed RF Choking at the antenna to mitigate any CMC (common mode current).

Remote Tuners: The advent of remote tuners that can be installed at the antenna has been a benefit to our antenna systems for the Amateur Radio enthusiast. They are cost-effective and work well for the needed job. Each ATU that we recommend on this website indeed works well to tune the vertical radiator to every frequency you may desire. Some are better than others too. Look closely at the power ratings and impedance range to ascertain the level of quality your selection may offer your favorite band use and modes of operation. In any case, all of the remote tuners on our website do the job nicely and you'll be very pleased with how easily they match up together. 

Home Brew Tuning Options: We have a wide variety of clients and as much feedback on this subject. We have compiled a few methods that seem to work very well for our customers. 

Alternative Methods to Feeding your Antenna, here


How do I tune my Greyline Performance HF Vertical Antenna and remote tuner on the bands?

We work with lots of 'new to ham radio' and returning-to-the-hobby customers that ask about our antennas, so this is an important review. We do try to keep it simple and this does not mean entry-level antenna or results.

First, assuming your antenna system is built properly (you followed directions), the coax is of good quality back to the shack, and you're using a relatively modern radio and remote tuner, let's agree that everything is working as it should and begin:

1. Let's be sure all the gear is on and connected properly.
2. Lower power to 20 Watts or so for this first tune cycle
3. Set the display to showcase SWR
4. Go to the frequency you wish to operate
5. Put the radio in AM mode (or FM)
6. Find the "Transmit" button and press it
7. Allow the remote tuner to run it's tuning cycle until finished
8. Turn the power back up to your desired output power
9. Select your intended Mode of operation
9. Tune the bands and have fun!

Pro Tip: Be certain you're feeding the top, longer vertical radiator! Check to be sure the internal conductor within your coax is connected to the longer, upper section of your Greyline antenna. This may add 25-35 dB to your signal. Otherwise, you are using the lower portion of your antenna and, well, that's lower. Imagine if you've been working DX with the lower four feet of the antenna and discovered this bonus? It's happened more than once :-)


Customer Install Series

Customer Install Series: Rob in Colorado's Journey with a Greyline 20' DX Flagpole in his HOA

We'd like to hear from you. Please send us an email or give us a call. We are here for you. 

Related Articles


Be sure to look over our FAQ and Blog entries for a growing list of helpful topics.

We're honored to do our part one radio op at a time. Remember, Ham Radio is Fun Again!

It's a pleasure to serve you with Stronger and Smarter Antennas d'Elegance.

Contact us with any questions you may have! We'll see you on the air soon...

73 Greyline Performance


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