What is the best antenna for the ATS Mini overall?

There is no single best one — it depends on where you listen. Indoors in a noisy flat, a passive loop like the YouLoop plus a counterpoise wire is the strongest combination. With outdoor space, an end-fed longwire through a 9:1 transformer beats everything for the money. If you only want better FM, a longer telescopic whip is enough.

Do I need an amplified (active) antenna?

Only if space rules out wire and a loop. Active antennas like the Mini Whip or MLA-30+ pull strong signal from a small element, but they need DC power fed up the coax and can overload the ATS Mini’s front end, producing ghost signals. Try a counterpoise and a passive loop first; they are cheaper and cannot overload anything.

Can I plug an antenna into the 3.5 mm jack?

No. The 3.5 mm jack on the ATS Mini is the headphone (audio) output, not an antenna input. External antennas connect to the SMA jack, and wire antennas such as the reel type attach with their alligator clip to the whip.

Why does the radio sound better in my hand than in a stand?

The whip uses your body as its ground reference, so holding the radio effectively enlarges the antenna. A counterpoise wire clipped to the radio’s ground restores (and usually beats) that effect when the radio sits in a stand.

What connector does the ATS Mini antenna jack use?

An SMA female jack, so an antenna or adapter must end in an SMA male plug — the one with a small centre pin. RP-SMA looks the same but has the pin and socket swapped and will not mate.

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Buying guide

Best antenna for the ATS Mini

Which antenna to buy for the ATS Mini, by situation: apartment listening, portable travel, balcony DX or a garden longwire — with picks from the gear catalogue and the one upgrade that costs almost nothing.

The stock telescopic whip is genuinely fine for FM and a strong local AM station. On shortwave it is fighting physics: a quarter wavelength at 6 MHz is about twelve metres, so a 60 cm whip is a tiny capacitive stub. The good news is that the ATS Mini is designed around exactly that — its antenna input is deliberately high-impedance, tuned for a short whip rather than a 50-ohm coax feed — and that the best upgrades are cheap. This page matches an antenna to your situation; every pick is covered in detail, with links to listings, in the antenna catalogue.

The short answer, by situation

Your situation	Best pick	Why
Apartment or indoor listening, MW + SW, electrical noise around	YouLoop passive loop + a counterpoise wire	A passive loop is quiet and directional: rotate it to null out the noise from chargers and routers. It cannot overload the radio, and it needs no power.
Portable travel — pocket kit, listening from a park or hotel	Reel wire antenna clipped to the whip + a counterpoise	A retractable wire packs flat and clips onto the extended whip for a quick boost. Use its alligator clip, not the 3.5 mm plug — that jack on the radio is audio out.
Serious SW DX on a budget, with a garden or yard	9:1 unun + longwire	An end-fed random wire through a 9:1 matching transformer is the classic cheap outdoor upgrade — quieter and stronger than any whip. Keep the wire modest; long wires overload this radio.
Balcony or rooftop, no room for wire	MLA-30+ active loop	An active receive loop cuts urban electrical noise the way loops do and fits a railing. It needs USB power via its bias-tee and really wants outdoor mounting.
Very tight space, LW/MW/SW, quiet surroundings	Mini Whip active antenna	The classic E-field probe punches far above its size, but it amplifies local noise too — it is happiest away from household electronics, with power fed up the coax.
Mostly better FM (and strong MW)	Longer telescopic whip	Near 100 MHz a longer whip approaches a resonant quarter-wave, so extra length genuinely pays off on FM. On shortwave it helps far less than a counterpoise.
CB (27 MHz) and the upper shortwave bands, outdoors	27 MHz CB antenna	A resonant 11-metre element, not a broadband antenna — but as a bigger outdoor whip it hears the upper SW bands better than the stock one.
Spending as little as possible	Counterpoise / ground wire	A few metres of clip-on wire to the radio’s ground lifts shortwave signal and SNR more than extra whip length will — the highest-value upgrade on this page.

How to choose: three questions

Where do you listen? Indoors, local electrical noise — not signal strength — is usually what limits you, and quiet, directional antennas (loops) win. Outdoors, sheer capture area wins, and wire beats everything per dollar.
Which bands? FM rewards a longer whip. Mediumwave and the low SW bands reward a loop or a ground reference. The whole of shortwave rewards outdoor wire or an active antenna.
How much space and effort? A counterpoise is zero effort. A loop hangs on a curtain rail. A longwire needs somewhere to string it and a moment of weatherproofing.

Whip vs wire vs loop vs active

A whip is convenient and self-contained; on FM it can be genuinely good, on shortwave it is always a compromise. A wire has the most capture area for the money and, outdoors and away from the house, the lowest noise — through a 9:1 transformer it is the classic step up. A passive loop trades raw signal for quietness and directionality, which is exactly the trade you want indoors. An active antenna (Mini Whip, active whip, MLA-30+) adds an amplifier behind a small element: more signal from a tight space, but also more risk — all of them need DC power fed up the coax, and all of them can overload the SI4732’s modest front end and throw ghost signals across the bands. If that happens, the radio’s own attenuator and AGC are the first thing to reach for.

The counterpoise: the upgrade that is almost free

The whip works against a ground reference, and on a pocket radio that reference is normally your hand and body. That is why the radio often sounds worse sitting in a stand than it does held. Clip a few metres of ordinary wire to the radio’s ground and let it trail on the floor: signal and SNR on the low bands climb further than any amount of extra whip length. Whatever main antenna you choose from the table, add the counterpoise too.

Mind the connector

The radio’s jack is SMA female, so anything that screws on must end in an SMA male — the connector with the small centre pin. Watch out for RP-SMA, which looks identical but has the pin and socket reversed and will not mate. Antennas ending in BNC, PL-259 or TV plugs need a single adapter; the adapters guide covers which one and how to avoid the classic mistakes.

Unplug an external antenna in a storm and when you are not listening. A static discharge through the jack can quietly deafen a portable’s front end. To check what a new antenna is actually doing, watch RSSI and especially SNR in the status panel, or sweep a band with the spectrum scanner before and after.

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Domande frequenti

What is the best antenna for the ATS Mini overall?: There is no single best one — it depends on where you listen. Indoors in a noisy flat, a passive loop like the YouLoop plus a counterpoise wire is the strongest combination. With outdoor space, an end-fed longwire through a 9:1 transformer beats everything for the money. If you only want better FM, a longer telescopic whip is enough.
Do I need an amplified (active) antenna?: Only if space rules out wire and a loop. Active antennas like the Mini Whip or MLA-30+ pull strong signal from a small element, but they need DC power fed up the coax and can overload the ATS Mini’s front end, producing ghost signals. Try a counterpoise and a passive loop first; they are cheaper and cannot overload anything.
Can I plug an antenna into the 3.5 mm jack?: No. The 3.5 mm jack on the ATS Mini is the headphone (audio) output, not an antenna input. External antennas connect to the SMA jack, and wire antennas such as the reel type attach with their alligator clip to the whip.
Why does the radio sound better in my hand than in a stand?: The whip uses your body as its ground reference, so holding the radio effectively enlarges the antenna. A counterpoise wire clipped to the radio’s ground restores (and usually beats) that effect when the radio sits in a stand.
What connector does the ATS Mini antenna jack use?: An SMA female jack, so an antenna or adapter must end in an SMA male plug — the one with a small centre pin. RP-SMA looks the same but has the pin and socket swapped and will not mate.

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