Does the Greyline Tilt-Up Base fit other makers' antennas?

Yes. It fits any vertical, flagpole antenna or push-up mast with a straight 2.00-inch OD base section. Early 2.25-inch Greylines take the XL Tilt-Up Base, built for that size. The 3-inch HD Tilt-Up Base fits any straight 3.00-inch OD pole.

My pole is 2.375 inches. Will it fit?

2.375 inches is pipe, not tube, and needs an adapter. Measure the outside diameter of the base section before ordering; a straight 2.00-inch section fits directly.

Will the Greyline Tilt-Up Base fit my antenna?

The Tilt-Up Base fits any straight 2.00-inch OD pole: Greyline DXF, DXV and Skyline antennas and other makers' 2-inch verticals, flagpole antennas and push-up masts. Early 2.25-inch Greylines take the XL Tilt-Up Base; 3.00-inch poles take the 3-inch HD Tilt-Up Base. 2.375 inches is 2-inch pipe, not tube, and needs an adapter.

Does the 9-foot DX Whip fit every Greyline?

Yes. The whip threads into the flag truck that caps every Greyline, 2-inch, 2.25-inch and 3-inch HD alike; the truck is sized to the pole and every whip threads the same. On another maker's 2-inch pole it works if the top is open tube and the feedpoint is at the base; a resonant trap vertical may not be happy with nine more feet.

How do I measure my pole to know which base fits?

Wrap a tape around the base section and divide by 3.14, or use calipers. 2.00 inches takes the standard Tilt-Up Base, 2.25 the XL, 3.00 the HD. A reading of 2.375 is schedule pipe and needs an adapter.

Will the Greyline Tilt-Up Base, Whip, or Mount Fit My Antenna?

Compatibility

Will the Greyline Tilt-Up Base, 9' Whip, or Mount Fit My Antenna?

Short answer: if your pole is 2 inches in outside diameter, yes. We build these parts for our own antennas, but the fittings are 2-inch aluminum, and a 2-inch pole is a 2-inch pole whoever made it. Here is what fits what, at a glance, so you can measure once and order with confidence.

Measure your pole first. Wrap a tape around the base section and divide by 3.14, or use calipers. 2.00 in is the common vertical and flagpole size. 2.25 in is our legacy heavy size and takes the XL Tilt-Up Base. 3.00 in takes the 3" HD Tilt-Up Base. If you read 2.375 in, that is 2-inch schedule pipe, not 2-inch tube; it will not fit without an adapter.

Tilt-Up Base

The Tilt-Up Base fits 2.00-inch OD poles. Early 2.25-inch Greylines take the XL Tilt-Up Base, built for that size. Your antenna's lowest section slides onto the base's upper fitting and bolts through; the base goes in the ground or on the Deck or Concrete Mount. From then on, one person lowers and raises the antenna from the ground: loosen the four bolts, pull the second one down, and it pivots on the top bolt. Watch it happen in fourteen seconds →

Works with: any 2-inch OD aluminum vertical, HOA flagpole antenna, or push-up mast whose base section is a straight 2.00-inch tube. Larger pole? The 3" HD Tilt-Up Base fits any straight 3.00-inch OD pole or mast. Something else? Write us and we will tell you whether yours is a fit.

9' DX Whip

The 9' DX Whip threads into the flag truck that caps every Greyline, 2-inch, 2.25-inch and 3-inch HD alike: the truck is sized to the pole, and every whip threads the same. On another maker's 2.00-inch OD pole it does the same physics, provided the top of that pole is open tube and the feedpoint is at the base. It ships with our Topper, which also fits any 2-inch pole.

One caution: adding nine feet changes your antenna's electrical length. A Greyline is built to be fed through a tuner across every band, so the whip just makes it better. A resonant trap vertical from another maker may not be happy. If you are not sure what you have, call 435-200-4902 before you order and we will tell you.

Deck or Concrete Mount

The Deck or Concrete Mount is the no-dig base for a 2-inch pole: anchors into a deck beam, a footing, or a slab, and the Tilt-Up Base bolts to it. If the Tilt-Up Base fits your pole, this fits your site. The installation drawing, concrete and wood-deck methods both, is on the product page.

What We Will Not Claim

We have not tested every antenna on the market, and we are not going to pretend we have. The fittings are 2-inch and 3-inch aluminum; that is the whole compatibility story. If your pole measures 2.00 or 3.00 and is straight tube at the base, it fits; 2.25 takes the XL. If it is not, send a photo and the measurement to CQ@greylineperformance.com and you will get a straight answer, including “no.”

Ham Radio is fun again! Pass it on... 73, Jon KL2A

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Essential for every antenna

This turns all antenna work into easy one-man jobs. It also makes storm prep easy - just drop the antenna for the storm, raise it later. It takes less than 5 minutes to go up or down. I can't imagine having an antenna without one. I'm old enough that climbing towers, trees or big ladders just isn't in the playbook any longer, so this is a life-saver for my hobby. Buy one and make your life easier and add years to your ability to work on your antenna. Five Stars!!

Thank you, Rob. “Essential” is exactly the word we hoped for. One tip from another owner: walk it down once a season on a calm day and check the hardware at chest height. Fun season ahead! 73, Jon KL2A

Should be part of every antenna

The tilt base makes it possible to raise and lower the antenna in minutes single-handed with complete safety. The design is simple and robust and I love the fact that it can't over-shoot when raising it. In fact, it is seriously over-built. The only help I needed to install it was lowering the antenna to add the unit. It does raise the halyard cleat but I simply removed it, left the bolts in the original holes and mounted it at a comfortable level with a stainless hose clamp, problem solved. No more worries about the antenna during storms here in Florida. Five minutes and it's on the ground out of the wind.

Great addition to My 20V!

After 2 weeks of use I can safely say that the 9' whip is a great addition to my 20V! My rough calculations show about a 2+ db improvement overall. On the receive side the most dramatic indicator is that I am getting approximately the same signal strength without the preamp on most bands. I am also getting more reports in the + range on FT8 than previously. I have used PSK reporter to get a general picture of my RF footprint and signal strength compared to to the original 20v w/ previous reports. I have also been able to work several new countries that I could not work previously...India, Franz Joseph Land, Kahazakistan. India is certainly not rare but it has taken me three years to eliminate my "blind spot". Swr is well below 1.3/1 on all bands 80m-6m using the LDG RT-100 at the antenna. All in all could not be more pleased with the 9" whip addition!

Franz Josef Land and Kazakhstan on nine more feet — that's the report every whip page wishes it had. Thank you, Craig. Your words are on the page now. 73, Jon KL2A

Better base.

I want a 6ft x 18in hole. That is what the backhoe bucket is going to dig. I will need my own base tube, and a whole lotta concrete! I bought this extender to allow a more accurate vertical alignment while dumping in the concrete.

A 6-foot hole will hold anything we build. One tip while the concrete goes in: check plumb from two directions, 90° apart, then leave it alone for 24 hours. Send us a photo when it’s up! 73, Jon KL2A

Product is good. But I need a quick instruction sheet. You remove the bottom tube and replace it with the antenna base. Then the tube you removed connects the the top of the arm and to the insulated base of the antenna. Now I can lower my 24’ antenna without help.

Thank you, Dale. You were right, so we made one: the one-page Tilt-Up Base Instructions (install, lower, raise) now sit on the product page, because of your review. Have the best season yet! 73, Jon KL2A