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Sdr

soft demand (-17.4% this quarter) — Sdr doesn't clear our bar today.

Flapen Score

36
Skip it
Market size 25Growth 16Conversion 17Competition 28Returns 39Price range 28Avg price 81Brand share 23Review moat 74Quality gap 83
This niche Category average

Is Sdr profitable on Amazon?

According to Flapen's Amazon United Kingdom niche tracking, Sdr is a £101K/yr Amazon United Kingdom market (89K searches/yr). The top 5 brands hold 91% of demand. Verdict: Skip it — 36/100.

Sdr: the Amazon niche in one read

Everything a seller checks before entering, in three answers.

Is the demand real?

Not really. Search demand moved -17.4% over the last 90 days and 1.4% of searches end in a purchase.

£101K

revenue / yr

Units sold / yr2K
Search volume / yr-17.4%89K
Conversion rate1.4%
Avg price£82.36

Who owns the niche?

The top 5 brands hold 91% of demand, so 9% of the market is open.

9%

open market share

Brands · sellers11 · 30
Top-5 product click share68%
Open market9%
Avg brand age39 months

Is there a way in?

Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.2★ — the gap to enter on.

0/100

page quality · 21 products

Sponsored placement62%
New entrants (1y)4· 0 succeeded
Avg rating4.2★
Avg reviews546

Top Sdr products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

Competition: brands, sellers & click share

The top 5 products take 68% of clicks — established leaders, but buyers still shop beyond them.

£0£5K£10K£15K£20K1101001K10K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)2 products missing review or click data not plotted

Brands

11 falling

Sellers

30

Top-5 brand share

91%

Top 20: 100%

Top-5 click share

68%

Top 20: 99%

Open market

7%

  • NooElec39%
  • RTL-SDR Blog38%
  • TARSHYRY8%
  • AURSINC3%
  • Dropfree3%
  • HanOaki2%
  • Open — no brand owns it (5 brands, 7%)

Sdr demand & seasonality

Weekly search volume, with the niche's key stats alongside.

Volume89KCVR1.4%Products21Brands11Top 5 Brands91%OOS Rate5.6%Rating4.2★Reviews546Avg BSR#148
3K2KSpike '24Holiday '24Prime Day '25Spike '25Black Friday '25Spike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.5×

Top Sdr search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.

  • sdr radio receiver26K/yr
  • sdr21K/yr
  • rtl sdr14K/yr
  • sdr radio8K/yr
  • sdr dongle6K/yr
  • rtl sdr v45K/yr
  • rtl-sdr4K/yr
  • software defined radio3K/yr
  • rtl2832u3K/yr

What reviews say buyers love and hate about Sdr

What buyers mention most, as a share of all reviews.

What buyers love

84% of reviews
Value For Money26%

Worth the money

Assembly/Installation12%

Good if you know how to install

Quality-Overall10%

Build quality is really good

Signal Strength10%

Got quite good coverage with supplied antenna

Compatibility-Overall6%

Compatible with most SDR software

What buyers complain about

64% of reviews
Signal Strength14%

Needs a better antenna for best results

Quality-Overall12%

terrible everywhere else

Software/Application8%

Could not download software contacted the makers

Compatibility-Overall8%

Old and incompatible

Ease Of Use8%

Been struggling to get it to work

Sdr return rate & reasons

Why buyers send it back, as a share of all return requests.

3.9%

Return rate

0%

Fixable by listing

The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.

1Functionality-Overall
21%
2Compatibility-Overall
16%
3Signal Strength
9%
4Defective Material/Parts
9%
5Software/Application
7%

Common Sdr questions

The questions sellers ask about this niche, answered from the tracked metrics.

Flapen scores Sdr 36/100 on Amazon United Kingdom — Skip it. The niche generates £101K/yr across 21 tracked products. 0 of 4 products launched in the last 360 days are still selling. Search demand moved -17.4% over the last 90 days.
Search demand for Sdr on Amazon United Kingdom is steady year-round — the busiest month runs 1.5× the quietest.