Values are estimates from recent comparable sales — condition, accessories, and included extras vary. Always compare before buying.
Selling your FlexRadio Flex-6600? Run its Rig Check → Answer the questions a sharp buyer will ask and get a condition report for your listing — a fully answered report lets a truly nice radio demand a good price.
Median sold price per month, trailing 1 months. Roughly flat over the period.
Based on classifieds listings marked SOLD — asking prices sellers marked as sold, not confirmed sale prices. Refreshed daily from our deal-scan comp checks.
| Date sold | Item | Price | Status |
|---|---|---|---|
| Individual sold records for this model are still being compiled — the fair-value estimate above is based on 7 recent sales. | |||
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The FlexRadio FLEX-6600 is a high-performance HF/50 MHz software-defined radio (SDR) in the FLEX-6000 series, designed for advanced amateur and professional operators. It offers direct digital sampling, expanded receiver capabilities, and integrated features for both standalone and remote operation.
Yes. FlexRadio confirms the FLEX-6600 can be used for maritime mobile service, provided it is registered and operated in compliance with the relevant maritime regulations.
The FLEX-6600 adds a balanced audio input on the rear panel (in addition to the standard mic/PTT ports) and is designed for certain commercial/maritime applications where balanced audio is required. Otherwise, the FLEX-6400 and FLEX-6600 share the same core DSP, frequency range, and SmartSDR compatibility.
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