This profile allows a device to be identified above and beyond the limitations of the Device Class already available in Bluetooth. It enables identification of the manufacturer, product id, product version, and the version of the Device ID specification being met. It is useful in allowing a PC to identify a connecting device and download appropriate drivers. It enables similar applications to those the Plug-and-play specification allows.
Kenwood KT-6040 search eBayWe think the very rare KT-6040 was sold only in Europe and Asia and it's tough to find one on eBay-U.S., where $200-265 is the usual sale price range (but one sold for just $77 in 5/16). Our contributor Jeroen reports: \"The KT-6040 was the successor of the KT-7020, which was the higher model of the KT-5020. The 6040 is an excellent tuner and, as mentioned by someone else, a sleeper. It is, IMHO, superior to both the 5020 and the 7020, with the 7020 being superior to the 5020. I've checked the schematics of the KT-5020 and the KT-6040, and I see many differences. The 6040 has 5 gangs (I think), 8 ceramic filters and 3 IC filters, and the distortion cancelling circuit is much more complicated. Also, the MPX chip is better in the 6040 (LA3450) then in the 5020 (LA3401). The 5020 has a combined FM/AM IF IC (LA1266), while the 6040 uses separate IC's (LA1235 and LA1245). The KT-6040 is a new design, stepping away from both the KT-5020 and the KT-7020/KT-990D.\" The KT-6040 is one of a very few tuners that use GaAs FETs, as do the Burmester 915 and Hitachi FT-5500MKII.
Kenwood KT-7020 (1990, photo, German info sheet) search eBayYou can search, but you're not likely to find this big brother of the renowned KT-5020 on eBay U.S. because it was sold only in Europe and Asia. The KT-7020's front-panel buttons include RF Selector (Direct/Distance), FM IF Band (Wide/Narrow), Auto Stereo/Mono, Sens Level (High/Low), and an \"Active Reception\" button that appears to be similar to Onkyo's APR system. When Active Reception is engaged, the tuner makes its own decisions for the Direct/Distance and IF Band settings. There's also a recording calibration tone button, 10 preset buttons which allow for 20 preset stations by means of an A/B button, and a Tuning Mode button that makes the tuner seek out the next strong station rather than going up or down by .025 MHz. For example, with Tuning Mode in Manual, a spin of the knob takes you from 107.1 to 107.125 (readout says 107.12) to 107.15, 107.175 (readout says 107.17), 107.2, etc. It's useful to be able to detune slightly when a desired weak station is adjacent to a strong local.Our panelist Eric found his KT-7020 to be quite sensitive and more selective than most stock tuners. Our contributor Fabio says, \"The circuit of the KT-7020 compared to the KT-5020 seems quite more complicated with the distortion canceler circuits, discrete components MUX (multiplier, op-amps, etc.).\" Our contributor Jeroen adds, \"Strangely enough, under the hood the KT-7020 is the same as the KT-990D. I own both the 990D and the 7020 and the PCBs are exactly the same with exactly the same components. My hypothesis is that the design of the KT-6040 was meant to be for the KT-7020, but it somehow got delayed and due to time constraints they took the design of the 990D and used it for the 7020.\" The KT-7020 tunes the European AM band, with 9 kHz spacing, and for use in the U.S. requires a step-up transformer to convert the power source from 110 volts to 220. 1e1e36bf2d