{"product_id":"pioneer-f-447-hi-fi-tuner-black-very-good-w-manuals","title":"Pioneer F-447 - Hi-Fi Tuner - Black - Very Good w\/ Manuals","description":"\u003ch3\u003eWhy this one\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eVery good condition - light cosmetic wear, no functional issues\u003c\/li\u003e\n  \u003cli\u003eFully tested - all applicable functions verified working\u003c\/li\u003e\n  \u003cli\u003eFlagship 1990 digital synthesis tuner with 90 dB mono S\/N ratio and 24 presets.\u003c\/li\u003e\n  \u003cli\u003eIncludes original manuals - a welcome addition for this technically sophisticated tuner.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCondition: Very Good\u003c\/h3\u003e\n\n\u003cp\u003eThis Hi-Fi tuner is in very good condition. Of our 8-point functional test, 2 item(s) passed and 6 were not applicable; no faults found. Note: The unit is in good cosmetic condition, with hardly any surface marks or scratches. Please note that aerials were not included, so functional testing was limited to confirming that the unit powers on and off correctly and that the display operates as expected. Please review all photos carefully, as they provide an accurate representation of the cosmetic condition of the product.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003ePioneer F-447 (Black)\u003c\/li\u003e\n  \u003cli\u003eManuals\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAbout this model\u003c\/h3\u003e\n\u003cp\u003eThe Pioneer F-447 is a Digital Synthesizer Tuner released in 1990, using a Direct Digital Decoder Type III PLL detector combined with ARTS IF circuitry to convert incoming signals to digital form before producing stereo analogue output. Its FM section employs a double 10.7 MHz IF system - upconverted to 21.4 MHz then down to 1.26 MHz - alongside phase-linear ceramic filters and a dual MOSFET RF amplifier for low-noise reception. A 6th gang varicap diode handles local oscillator control, governed by an 8-bit binary code read from the dial scale. Tuning is handled via 3-speed manual and automatic modes with 24 presets split across two groups of 12, and wide\/narrow IF filter switches are provided for both FM and AM bands. A 5-segment signal meter and single-digit signal strength readout aid reception optimisation, while multipath output terminals allow for antenna alignment. Pioneer quoted a 90 dB signal-to-noise ratio in mono, and independent testing recorded spectacularly low stereo distortion with sensitivity of 15 dBf for 50 dB quieting in mono.\u003c\/p\u003e\n\n\u003cp\u003eA great opportunity to own a Pioneer F-447 at this price point.\u003c\/p\u003e","brand":"Pioneer","offers":[{"title":"Default Title","offer_id":55223794598225,"sku":null,"price":35.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0775\/6913\/0833\/files\/7aed6a98-49df-46d4-81f0-a376c3e55dc9.jpg?v=1791451795","url":"https:\/\/www.audiotrader.co.uk\/products\/pioneer-f-447-hi-fi-tuner-black-very-good-w-manuals","provider":"Audio Trader","version":"1.0","type":"link"}