Radio Field Ops report adding 4-foot extensions up to 40 feet! #experimental


Greyline 20' HF Vertical Antenna extends to 40 feet, really?!

"I love the performance but have concerns. 40-feet is perhaps a bit long. I may shorten it to 36 feet," says our field op in Washington State.

As you may recall, we have run several polls recently to get into what you and our other customers really want to see built. We've asked a series of questions such as, How to Operate on 160M, How high can you go, Can you use Radials, How much power can you run, how much room do you have, etc. etc.

Quietly, we've been shipping out extensions to various customers to test adding 4 feet to their 20 or 24 foot Greyline Antennas and some have gone up to 40 feet !

Check this out in what is clearly an HOA environment.

40 foot HF Vertical Dipole in an HOA

ham radio, hoa, hf vertical antenna, flagpole antenna,

At those heights it is important that they are adding guy-ropes as our current free-standing antennas are engineered-properly, mind you, only to 20/24 feet. Anything above this is subject to guying ropes or tie-offs.

Note: These are experimental-use only until we can properly engineer a solution that will stand the test of time. Again, we do not recommend this for everyone, yet. But, that said, we do think this is good information and must share this with you.

40' HOA Flagpole Antenna (without the Flag) with Guy Ropes

ham radio, greyline, hf vertical antenna, hoa,

We think guy ropes at 30 feet for a 40-footer make sense. There are calculators on the web for various types of poles and towers one can experiment using that will suggest what heights to attach your guy ropes.

 Our experimental radio op in the field told us that it was a bit iffy putting the 40' up by himself. He created a homebrew pivot point at the bottom of the vertical and slowly walked it up. You can see his handy work, here:

DIY Homebrew example of a Tilt Over, Pivot Point for the 40' HF Vertical Antenna

hf vertical antenna, ham radio, in an hoa, flagpole antenna, diy, pivot base, tilt base

Our buddy Mike reports that he's working Real DX on 160-10M with this set up and really is having fun again. What do you think of that? Is this something you would try? Let us know, drop  a note: Contact Us now.

Some of you may wish to try experimenting by adding 4' extensions to your antenna too. Let us know what you find, email or call us. We want to know. Thanks!

We hope you enjoyed this information and maybe learned something from it. Ham Radio is fun again! Pass it on...

73 Greyline Performance


How to Order a Flagpole Antenna, checklist.

  • "Real DX 160-6M at my HOA"
  • "4 Band DXCC in 3 months at my HOA."
  • "So pretty my XYL approves!"
  • "If I can hear it, I can work it."
Ham Radio is fun again! Pass it on...

Greyling Performance Antennas logo

Please take our 160M Survey

This survey reads like a Q&A of how to turn your 20-24' Flagpole Antenna into an 80-160M Real DX antenna for those using the lower impedance range (low cost) tuners 



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