Scout KS-42 vs Shakespeare 5101
The 5101 is one of the most common 8-foot antennas on American boats. The KS-42 is what the same 8 feet looks like when nothing is left hollow. This is the comparison for anyone deciding whether the construction difference is worth it.
Side by side
| Feature | Scout KS-42 | Shakespeare 5101 |
|---|---|---|
| Length / gain | 8 ft / 6 dB | 8 ft / 6 dB |
| Construction | 100% foam filled, solid fiberglass body | Hollow (Classic line) |
| Factory testing | Every unit tested individually | Not published |
| Ferrule | Electropolished AISI 316 stainless | Brass |
| Cable | 16 ft MIL-spec RG-58 CU included | 15 ft RG-58 included |
| Warranty | 5 years — zero claims in ~2 years of US sales | 2 years (retailer-published) |
| Price (checked Aug 2026) | List $249.99 — authorized-dealer street $93–$123 | Street roughly $110–$140 |
Shakespeare specifications and prices from published retailer listings, August 2026.
What the difference buys you
- A sealed element instead of an air gap. The KS-42's foam core is the difference between an antenna that degrades quietly from internal condensation and one that cannot.
- Proof, not promises. Every KS-42 is individually tested before leaving the factory in Italy — and the US track record backs it: in nearly two years of sales, zero warranty claims, zero failures.
- Independently measured performance. In a 2026 installer field test, a Scout 6 dB antenna put out a measured 18 W with no VSWR loss — matching a premium Galaxy 8-footer while the boat's OEM antenna lost power. Watch the field test.
- Hardware that lives in salt. Electropolished AISI 316 stainless at the ferrule — the part that fails first on brass-fitted antennas after seasons of spray.
- Five years of coverage. More than double the published warranty of the 5101 — because the construction supports it.
The deep-dive on the construction story: why Scout foam-injects every antenna.
The bottom line
Here is the part that surprises people: at authorized-dealer street pricing (checked August 2026), the KS-42 sells right alongside — often below — the 5101. Same money. One of them is hollow with a 2-year warranty; the other is foam filled, individually factory tested, 316-stainless fitted and covered for 5 years. At street prices this is not a premium-vs-budget decision at all — it is simply the better antenna for the same spend.
See the Scout KS-42, the compact matchup: KS-41 vs Little Giant, or the premium-tier question: Scout vs Shakespeare Phase III.
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
Is the Scout KS-42 better than the Shakespeare 5101?
They are both 8-foot 6 dB antennas, but different classes of construction. The 5101 is an entry-level Classic: hollow body, 15 ft of RG-58, 2-year warranty. The KS-42 is 100% foam filled, 100% factory tested, ships with 16 ft of MIL-spec RG-58, carries an electropolished AISI 316 stainless ferrule and a 5-year warranty. In nearly two years of US sales, Scout has not had a single KS-42 warranty claim.
Does the KS-42 cost more than the 5101?
At authorized-dealer street pricing, no — the KS-42 commonly sells for $93–$123 (checked August 2026), right alongside or below the 5101's typical $110–$140 street price. For the same money you move from a hollow entry antenna with a 2-year warranty to a foam-filled, individually factory-tested antenna with 316 stainless hardware and 5 years of coverage.
How long does a hollow VHF antenna last?
The common failure pattern for hollow marine antennas is gradual: moisture condenses inside the tube, corrodes the element and connections, and range quietly degrades until transmissions stop being heard. Boaters usually discover it during a radio check. Foam-filled construction removes the air space where that starts.
Has the Scout KS-42 been independently tested?
Yes. In an installer field test published in 2026, a Scout 6 dB antenna delivered 18 watts of measured output with no VSWR loss — matching a premium Shakespeare Galaxy 8-footer on the same meter, while the boat’s OEM antenna managed 16–17 watts with high VSWR loss. Every KS-42 is also individually tested at the factory in Italy before it ships.