Collection: Antenna Tuner for Ham Radio: Remote & Desktop ATUs

Antenna Tuners · Remote & Desktop · Greyline-Validated

Antenna tuners for HF: at the feedpoint or at the desk.

There are two right places for an ATU, and this shelf carries both. Remote tuners that mount at the antenna and disappear from your life. Desktop tuners that keep the match under your hand, paired with line good enough to carry it. Every unit here is hand-picked and validated on the balanced, choked feed system our antennas ship with — this is a shortlist, not a catalog.

Two architectures, both correct

Remote, at the feedpoint. Match at the antenna and the mismatched section shrinks to inches: your entire coax run operates near 1:1, paying only its spec-sheet loss. Ordinary coax becomes good enough, the match travels with the antenna, and the system is set-and-forget. This is the architecture our bundles ship.

Desktop, in the shack. Roughly half the operators we ship to run the match from the desk — and with the right line, that is not a compromise, it is a choice the math supports. Pair a quality desktop ATU with low-loss coax (LMR-400, LMR-600, 7/8-inch hardline) or ladder line, and the additional loss from SWR stays small because it scales with the line's matched loss. Full control at the station, memories and integration where you want them.

How To Choose In Three Questions

1. What power class? 100W barefoot is one tier; an amp is another. Buy the tuner for the power you run, not the radio you own.

2. Where do you want the control? Set-and-forget at the pole, or hands-on at the desk. Both work. Pick the one that fits how you operate.

3. What line are you running? Desktop camp: low-loss line is the price of admission. Remote camp: the coax you own is probably fine. When in doubt, calculate — the tool below is free.

The house pick at 100 watts

If you are running 100 watts and want the remote answer, the LDG RT-100 is the unit we ship in our bundles: weather-sealed, 1.8 to 54 MHz, 2,000 memories, tuned in under a second on matches it knows, powered over the coax through its bias-tee. Full specifications live on the product page.

Field Note

About 67% of Greyline operators who add a tuner choose the LDG RT-100. Not because it is the only option that works — most desktop and remote ATUs work fine on a Greyline VDA. The RT-100 wins the choice on availability, price, and the fact that it just runs.

If you already own a tuner you trust, run it. This shelf is for the day you want a better one.

Why this shortlist is short

We do not list every tuner on the market. A unit earns this shelf when it has been validated against the system our antennas actually present: a balanced vertical dipole behind a common-mode choke, multiband SWR excursions included. Remote units for the feedpoint camp, premium desktop units for the shack camp — each one a pick, not a placeholder. The shelf grows as units earn their way on.

Running an amplifier? Choose from the legal-limit tier — a 100W-class tuner is not your tuner, desktop or remote. And on duty-cycle modes like FT8 at full rated power, let the tuner cycle between bands rather than holding key-down; standard ATU practice on any duty-sensitive load.

Desktop or Remote, The Wire Is Still The Wire

Calculate Your Real Power-At-Antenna

Whether you run a desktop ATU in the shack or a remote at the feedpoint, your coax still carries the signal. Run your station through the Feedline Loss Calculator to see how much of your transmitter power actually makes it to the radiator. The answer often clarifies the desktop-vs-remote decision.

Open the Calculator →

Pair with: Antenna + ATU Bundles → · RF Chokes & 1:1 Baluns → · Feedline Physics →

73 Greyline — 435-200-4902

Ham Radio is fun again. Pass it on…

THE SIGNAL LAB

A tuner is not an accessory. It is half the system. Matched at the feedpoint or paired with low-loss line to the shack — the tuner is half the system either way. Learn the why:

Indoor vs remote ATU: three right answers →

Tuner and balun feed system: correct configuration
Pre-matched antenna + ATU bundles
The no-radials vertical dipole the tuner is matching

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20' Flagpole review

We are very pleased with our 20' flagpole with the 9' whip. We are able to FT8 all over the world with it. I love that we didn't have to put in radials. I haven't done a lot of voice contacting but have been able to reach over 1300 miles into Oklahoma, NW Montana, and Washington state from Arizona. I'm sure I will be able to reach farther than that with a little more time doing it.

Thank you for the report — and congratulations on the contacts. Arizona to Oklahoma, Montana, and Washington on the 20' DXF with the 9' whip is exactly the kind of all-band performance the system is built for, and FT8 worldwide is the proof of concept. The no-radials part isn't a shortcut — it's the design choice that lets the antenna work where most verticals can't. More time on the bands and you'll see the DX windows open up. Welcome to the Greyline community.
73,
Jon KL2A
Greyline Performance

24 foot flagpole antenna review

First I would start by thanking Greyline for excellent communication and support. Any questions I had were promptly answered and addressed.
The antenna assembly went quick and was pretty easy to follow. I can tune <1.5:1 for 10m to 40m. 80m is hit or miss but is probably due to my older antenna tuner as it tunes 80m some of the time. WSPR tests show good propagation with some contacts in Australia and South America from California (QTH). Made some FT8 contacts with East Coast US. Ran some high power SSB tests and all good. Overall very happy with the antenna. It is well manufactured.

Hi Phillip, thank you for sharing your detailed experience! We're thrilled to hear you're happy with the antenna's performance and our support. Enjoy your amateur radio adventures! Thank you — and that's a strong report. California to Australia and South America on WSPR is the kind of low-power-out, real-propagation evidence that tells you the system is working as designed. East Coast on FT8 and clean high-power SSB rounds out the picture. On 80M: you're right to suspect the tuner. The DXF is non-resonant by design and asks more of the ATU on the lowest bands; a tuner with a wider impedance range will close that gap. Worth a conversation if you want to chase it. Welcome to the Greyline community. Ham Radio is fun again!
73,
Jon KL2A
Greyline

reply to your request for an update.

Recieved the antenna in good shape. Checked out the video and manual for assemble. Worked on where the best place to install it. In the process of Ordering support items. ladder antenna and then I got sick. Currently I am on the mend and will keep you updated.
I do have a question regarding in ground laterals that many verticle antenna need. I did not see instructions for ground laterals?
Probably a few more questions, however both the video and manual are great.
Thank You
Roger Lutz [****]. [****]

Very Happy

I'm very happy with this antenna. It looks great as a flagpole. Easy to setup and get on the air. Works and performs very well.

I was really surprised

I am not your normal Flagpole user. I was running an Icom 7610 when I bought it, 24' + 4' extension with LDG tuner, and it was the best vertical I have used. I then went digital and upgraded to a Flex 8600 with an Antenna Genius and a Tuner Genius. I was having a lot of trouble getting the LDG to work consistently with the 8600 system. In desperation I removed the LDG from the equation and installed a Balun Design 4115T 4:1 Balun to the ladder wire from the Flagpole. I was amazed that I could tune most bands to less than 1.5 to 1, but I could not tune 160m, 12m, and 10m. I then added the extension. I took the kit apart and used galvonic grease on all of the connections. I then set the length to 138 7/16 inches and use shrink wrap on all of the connectors. I had to rent a lift truck to get the extension on the Flagpole and used galvonic grease on the connection. The extension made the Flagpole not tune on 6m, but everything else was great. I do not believe in a perfect world so having a 160m to 6m antenna that did not do well on all bands in-between was not a surprise. When I cranked up the new system with the Flagpole feeding the 8600 I was stunned. I know that you might think that that is just marketing talk, but it is true. I run WSJT-X and JTAlert. Yesterday, a Thursday, I started a session around 3:00 Pensacola, FL time. I started on 30m with the Tuner Genius giving me a 1.19 to 1. I was able to get a QSO from every contact In my JTAlert list. Anyone I could see I could receive. I then tuned to 20m. For whatever reason the pattern was full. I started making contacts and was able to make 20 straight QSO's in a row, all from outside of the USA. The average distance from Pensacola to the QSO's was around 4,000 miles. They spanned from South Africa to Australia to Finland. That is a coverage area of around 18,000 thousand miles. Do atmospheric conditions work that way? If they do I have never experienced it before. You should be the judge on just how good this Antenna - Radio combination is.
73
Bill - NO4ON

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