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Ten-Tec Model 651 Combiner / Splitter (also called the "ISOLINE-651") NEW in Box

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MPN:
651
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New
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$8.00 (Fixed Shipping Cost)
  • Ten-Tec Model 651 Combiner / Splitter (also called the "ISOLINE-651") NEW in Box
  • Ten-Tec Model 651 Combiner / Splitter (also called the "ISOLINE-651") NEW in Box
  • Ten-Tec Model 651 Combiner / Splitter (also called the "ISOLINE-651") NEW in Box
  • Ten-Tec Model 651 Combiner / Splitter (also called the "ISOLINE-651") NEW in Box
  • Ten-Tec Model 651 Combiner / Splitter (also called the "ISOLINE-651") NEW in Box
$74.99
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Description

Ten-Tec Model 651 Combiner / Splitter (also called the "ISOLINE-651") NEW in Box

The Ten-Tec Model 651 Combiner/Splitter (also called the "ISOLINE-651") is a discontinued, niche accessory introduced around 2003. It's a high-performance passive RF combiner/splitter designed primarily for receiver testing, antenna phasing, or combining signals with excellent port isolation (using a smart design to minimize interaction between ports). It features low insertion loss (~3 dB per path for 2-way) and is optimized for HF applications, often used by experimenters and in setups like combining signal generators for intermodulation testing or splitting signals to multiple receivers.Key Features
  • Configuration — 2-way combiner/splitter (1 input to 2 outputs or vice versa).
  • Frequency Range — Broadband HF (typically 1–30 MHz or wider, based on user reports).
  • Connectors — BNC or SO-239 (varies by unit; most photos show BNC).
  • Design — Passive (no power required), high isolation ports to prevent signal bleed (praised in ham testing circles for improving IP3 measurements).
  • Uses — Common in receiver performance testing (e.g., with SoftRock or other SDRs), phasing antennas, or lab setups.
It was a low-volume product aimed at serious homebrewers and test bench users, not a mainstream ham accessory.
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