VHF Antenna for Simrad Radios
The direct answer: any marine VHF antenna works with a Simrad radio — antennas are universal. Fixed-mount VHF radios all use the same standard 50-ohm connection (SO-239 socket, PL-259 plug). What actually decides your range and how long the antenna lasts: construction, gain, cable and connector quality.
The Simrad RS40 and RS100 include AIS receivers, so antenna bandwidth matters — an antenna tuned for the whole marine band serves both voice and AIS channels.
What actually matters when pairing an antenna with your Simrad
- Connector. Your Simrad (RS20S, RS40, RS100) has an SO-239 socket. Every Scout antenna ships with the matching PL-259 — and the QuickFit line removes the soldering step entirely.
- Gain, matched to your hull. 3 dB holds the horizon on boats that roll; 6 dB reaches farther from stable platforms. The gain guide explains the trade in two minutes.
- Construction. The radio is only as good as the antenna: Scout builds every model 100% foam filled with solid brass/copper elements and AISI 316 stainless hardware — and in nearly two years of US sales has had zero warranty claims.
- Cable run. Quality cable ships in every Scout box; keep the run short and solder-free where possible. The installation guide covers routing.
Scout picks for Simrad owners
- Scout KS-41 — 4 ft / 3 dB: small boats, T-tops, and anywhere windage matters. QuickFit solderless option.
- Scout KS-42 — 8 ft / 6 dB: the classic center-console and cruiser pairing, 25–30 mile range.
- Scout KS-43 — 8 ft / 6 dB collinear-phased: the best-performing antenna in the range.
- Sailboat? See the full range for masthead 3 dB antennas and dedicated AIS antennas.
Undecided? The antenna selector matches antenna to boat in four questions.
Where to buy Scout antennas
Scout antennas are sold through authorized dealers and distributors. Email us and you'll get a personal reply from the US importer — dealer options for your area, straight answers, usually same day.
Common questions
What VHF antenna works with a Simrad radio?
Any marine VHF antenna. Fixed-mount VHF radios — Simrad included — use the industry-standard 50-ohm antenna connection with an SO-239 socket that accepts a PL-259 connector. There is no such thing as a "Simrad antenna"; what matters is antenna quality: construction, gain, cable and connector.
Does Simrad make its own VHF antenna?
Simrad sells radios; the antenna is a separate purchase from an antenna maker. That is good news — it means you can pair a Simrad radio (RS20S, RS40, RS100) with the best antenna for your boat rather than a bundled compromise.
What gain should I choose for a Simrad radio?
Gain comes from the antenna, not the radio. The honest rule: 3 dB (usually 4–5 ft) for small boats, sailboats and anything that rolls — it holds the horizon as the boat moves; 6 dB (usually 8 ft) for stable powerboats that want maximum range. Radio brand plays no part in that choice.
Do I need a special antenna for Simrad AIS features?
Some Simrad radios include AIS receive. AIS lives at the top of the marine band (161.975 / 162.025 MHz), so a well-built broadband marine antenna serves both voice and AIS through one connection — and Scout also builds dedicated AIS antennas for split installations.
Other radio brands: Garmin · Raymarine · Standard Horizon · Icom · Lowrance · B&G · Furuno · Cobra · Uniden