1/29/2024 0 Comments Am fm antenna amplifier![]() ![]() Via the antenna amplifier the three received FM-signals are cyclically transmitted to the HU by the main diversity antenna cable. The diversity ZF cable is the one connected to an extra connector of the old amplifier. ![]() The antenna amplifier works only in FM-mode and in the pre-facelift (see paragraph 1) it is powered from the HU via the central wire of a high-frequency Diversity ZF cable (ZF stands for German Zwischenfrequenz - intermediate frequency). The diversity antenna includes one AM-antenna and three FM-antennas (FM1, FM2, FM3). The diversity antenna is located on the rear windshield (except cabrio) and shares the function with a rear window heater. "In cars with a BMW Business CD radio up to 09/01 and in all other cars up to 03/01, the aerial booster (1) must be replaced by an aerial booster (1) for cars from 09/01 or 03/01 onwards, respectively."Ģ As the e38, e39 and other German cars, the e46 is equipped with a diversity antenna system. 01 29 0 309 179 DVD Navigation System Retrofit with On-Board Monitor. So here are the amendments to the original post:ġ «Installation Instructions No. Up to date there are more than 12 hundred views. Also I found the exact dates of the end of production of the old amplifier and finally edited the "Instruction.". Two respected members of the, GUNhed and amended the "Instruction." with technical details about the function of additional cable in pre-facelift and particularities of a diversity antenna system. Also I translated the "Instruction." into Russian and posted on the (hosted in Russian Federation). Dear sna77, I would like to thank you for the great write-up personally and on behalf of the Ukrainian colleagues and friends from as well.įollowing the recommendations I upgraded my pre-2001 sedan from cassette radio to 2004 Business CD head unit.Īfter my successful experiment and seeing how many pre-facelift e46 owners in Central/Eastern Europe are suffering the same problem with radio reception after swapping the original HU with post-2002 HU I decided to post what I called an "Instruction for changing the OEM cassette HU with facelift Business CD" (translation of your original information with my comments) in Ukrainian on our national BMW Club Ukraine site bmwclub.ua ( ). ![]()
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