![]() ![]() My plan was to use the whip for AM and my TV antenna for FM but then I found that both AM and FM work great using just the one whip so I could probably just connect the AM input to the FM antenna connector and use it together for both. CB whips with loading coils don't work well though since the coil blocks AM and FM frequencies. A car radio whip will work or a solid metal CB whip. I removed the screw terminals and installed a second F connector on mine and I use RG6 shielded cable to connect to a whip antenna outside on the roof. The Sony does have an HD Radio receiver which is nice for the extra stations on FM sometimes, but the CCrane is the one I go for first these days. The people at Sony really dropped the ball when they put screw terminals on the back for AM instead of using another F connector or combining the two together like a car radio. I haven't tested the EP Pro with the external twin coil antenna yet since I've only got the short cable and it's convenient to just take the whole radio outside on battery power. HD stations need a stronger signal than regular stations so to get good reception and block out noise and static from household appliances you need an outside antenna with a shielded leadin using the proper shielded connector. >AM on the Sony appears to be barely acceptable.Īctually AM reception is quite good, as good as most any other radio. Both the tuner module and HD Radio module contain surface-mount electrolytics that would be difficult to replace. A fan might well lower the temperature 20° C, quadrupling capacitor life. The expected lifetime doubles for each drop of 10° C. Reducing temperature will prolong electrolytic capacitor life. Try the unregulated 5.2 V, switching the fan and a back-biased diode with a transistor turned on by the 8.5 V. Some 12-V fans become inaudible when operated at a lower voltage. This has only a minor effect on internal temperature, but it's easy to do.Ī tiny fan mounted inside the tuner should greatly lower its temperature. Ken Wetzel added extra feet to enlarge the space under his tuner and improve air flow. After conversion the temperature rose more slowly, but it was only 1° F cooler after an hour. No baloney, its a Sony The 100 XDR-F1HD just might be the worlds best HD Radio. I converted the 10.5-V supply from half- to full-wave rectification, intending to reduce transformer losses and lower the RMS ripple current in C908. Sonys awesome but ridiculously cheap AM/FM HD Radio. But most high end car radios for the US market do.With a thermistor attached to C908 on the power board and the top cover in place, I measured 63° C (145° F) after one hour at 25° C ambient. So not really worth it for many global products (like typical new audio receivers) to include it now. HD may work for some, but it is a US and Canada thing only. I had 3 of these things, sold two, modded the remaining one. But at these low bit rates, they also start rolling off the highs, and go to mono blending at some frequency bands. Typically HD has solid bass, that's an easy thing as the sample rate is low. If you are listening to HD2, it's typically A 64K stream max, usually less. The best scenario is when there is only HD1, as full bit rate (96-128K) only goes to 1 channel. Its a very small unit, smaller than many clock radios. Because the total HD bit rate is split up between the HD1, HD2, HD3 channels. For a little over a month now, Ive had the Sony XDR-F1HD tuner. Heat kills electronics, especially electrolytic caps.įor FM with IBOC/HD, the individual channel HD bitrate in digital mode is less way less a typical 128K mp3. They all use DSP as well now.Īnd agree, it is built cheap inside with low cost caps, etc. It is likely true that any decent modern car radio will equal it today for reception. All tuners used the same basic folded dipole antenna mounted on my second-floor bedroom wall. All tuners went through both a Marantz PM7000 with Boston Acoustics A60s and a Denon DRA-685 with Advent Prodigy Tower IIs. It also does a number of DSP tricks internally to decrease noise, like any modern car radio - it implements stereo to mono blend, rolls of the highs, narrows the IF filter - all automatically. My McIntosh MR500 was compared and contrasted to an Onkyo T-9090, a Yamaha T-85, and a Sony XDR-F1HD modified by The XDR Guy. The stock unit is rolled off in the highs, and most of the mods fix that. The non-flat frequency response of the Sony XDR box is well documented elsewhere. ![]()
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