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#1
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I realize that this is the wrong sort of "radio" newsgroup, but I
cannot find any newsgroup dedicated to consumer AM/FM receivers. I figure you folks would have opinions on the relative merits of digital vs. analog tuners. Which is better for pulling in a weak, distant radio station: a top-of-the-line analog tuner, or a digital tuner with quartz crystal oscillator, phase locked loop, etc.? I am seeking a "good portable radio". None of the portables that I have owned have been able to pull in weak stations as well as my no-name car radio. Now, according to what I was told in some courses over a decade ago, I thought the "best" radio receivers used a quartz crystal local oscillator and phase locked loop to "lock on" to the received signal. However, the high end radios people have been refering me to (like the Tivoli Portable Audio Lab) have analog tuners. I have to admit that part of the charm of a digital tuner is the laziness it allows: key up 1340kHZ or 91.5MHz and you're there. I doubt that my no-name car radio was expensive even when the car was new. There should be a portable radio out there that works at least as well. Any recommendations? It wouldn't necessarily have to have a speaker; headphones would be fine. -- Please reply to: | "One of the hardest parts of my job is to pciszek at panix dot com | connect Iraq to the War on Terror." Autoreply is disabled | -- G. W. Bush, 9/7/2006 |
#2
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put up a beverage antenna!
"Paul Ciszek" wrote in message ... I realize that this is the wrong sort of "radio" newsgroup, but I cannot find any newsgroup dedicated to consumer AM/FM receivers. I figure you folks would have opinions on the relative merits of digital vs. analog tuners. Which is better for pulling in a weak, distant radio station: a top-of-the-line analog tuner, or a digital tuner with quartz crystal oscillator, phase locked loop, etc.? I am seeking a "good portable radio". None of the portables that I have owned have been able to pull in weak stations as well as my no-name car radio. Now, according to what I was told in some courses over a decade ago, I thought the "best" radio receivers used a quartz crystal local oscillator and phase locked loop to "lock on" to the received signal. However, the high end radios people have been refering me to (like the Tivoli Portable Audio Lab) have analog tuners. I have to admit that part of the charm of a digital tuner is the laziness it allows: key up 1340kHZ or 91.5MHz and you're there. I doubt that my no-name car radio was expensive even when the car was new. There should be a portable radio out there that works at least as well. Any recommendations? It wouldn't necessarily have to have a speaker; headphones would be fine. -- Please reply to: | "One of the hardest parts of my job is to pciszek at panix dot com | connect Iraq to the War on Terror." Autoreply is disabled | -- G. W. Bush, 9/7/2006 |
#3
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![]() "Paul Ciszek" wrote in message ... Which is better for pulling in a weak, distant radio station: a top-of-the-line analog tuner, or a digital tuner with quartz crystal oscillator, phase locked loop, etc.? Hi, Paul, Believe it or not the best receivers seem still to be the old-fashioned analog tuners, partly because of an inherently lower phase noise level in analog tuners and partly because a couple of manufacturers have put some great engineering into putting out really good portables. One is the GE Superadio which always gets great reviews everywhere, and the other is a little-known Radio Shack Chinese clone of the Superadio, their catalog #12-903, which I believe is a little bit more solidly built than the GE and closely approaches its performance. Any portable with a jack for an external antenna is a plus because you can run a lot of wire outside an bring it in through a window. This is much better than even the large 8-inch ferrite rods in the GE and Radio Shack. (Both models have connectors for external long wire type antennas.) My recommendation is to stay away from the Sony ICF-SW7600GR which a lot of people like because of its digital tuning and synchronous AM mode but I have one and there is no comparison between it and the RS 12-903, for example. It eats batteries like nobody's business and doesn't sound as good as the RS. One of the other big advantages of the GE and RS are their beautiful audio quality thanks to well-designed wide IF bandwidths and large speakers. And you can expect your batteries to last more than 200 hours! Another word about synchronous AM: on the Sony mentioned above, it does help on a moderately noisy signal but it raises the phase noise even higher compared to normal AM mode. In addition, on the very weakest signals near the noise floor Synchronous AM isn't effective at all because it needs a minimum S/N ratio to work properly. One last model that you may hear discussed is the CCRadio Plus. I wrote a review of it on Amazon.com which was later pulled for no apparent reason although some other folks claimed that the manufacturer had pressured amazon.com to reconsider any negative reviews of the product. Whatever happened, I had some solid engineering data in that review to support my opinion that it was a mediocre receiver, certainly not the stellar product that the ads claim. Sorry for the extra long post. Good luck in your decision and enjoy AM DX'ing. Regards, Al W6LX |
#4
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![]() In article , Al Lorona wrote: Believe it or not the best receivers seem still to be the old-fashioned analog tuners, partly because of an inherently lower phase noise level in analog tuners and partly because a couple of manufacturers have put some great engineering into putting out really good portables. One is the GE Superadio which always gets great reviews everywhere, and the other is a little-known Radio Shack Chinese clone of the Superadio, their catalog #12-903, which I believe is a little bit more solidly built than the GE and closely approaches its performance. Is the GE Superadio III as good? (Sometimes the model name stays the same, but later versions aren't the same product at all.) Any portable with a jack for an external antenna is a plus because you can run a lot of wire outside an bring it in through a window. This is much better than even the large 8-inch ferrite rods in the GE and Radio Shack. (Both models have connectors for external long wire type antennas.) I understand the merits of big antennas, but the whole idea of a portable is that you can pick it up and take it to the office, lab, etc. without having to get permission to string wires. Do these radios come with some sort of default antenna (like the traditional telescoping chrome rod)? My recommendation is to stay away from the Sony ICF-SW7600GR which a lot of people like because of its digital tuning and synchronous AM mode but I have one and there is no comparison between it and the RS 12-903, for example. It eats batteries like nobody's business and doesn't sound as good as the RS. One of the other big advantages of the GE and RS are their beautiful audio quality thanks to well-designed wide IF bandwidths and large speakers. And you can expect your batteries to last more than 200 hours! Is there anything similar to the GE or Radio Shack that gets shortwave? More to the point: In the middle of the continental US (Colorado), can I pick up international news in English? Someone told me once that the BBC was going to stop its shortwave broadcasts for the US because we weren't offsetting the cost. Shortwave wasn't part of my original interest, but I got curious after one guy claimed that any shortwave radio has to be better quality than a mass-market AM/FM radio. -- Please reply to: | "One of the hardest parts of my job is to pciszek at panix dot com | connect Iraq to the War on Terror." Autoreply is disabled | -- G. W. Bush, 9/7/2006 |
#5
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Paul Ciszek ) writes:
I realize that this is the wrong sort of "radio" newsgroup, but I cannot find any newsgroup dedicated to consumer AM/FM receivers. I figure you folks would have opinions on the relative merits of digital vs. analog tuners. rec.radio.shortwave is the proper group, it's intended for any distant listening of radio stations, not just shortwave. (THis isn't a retro-definition, it was there from the start and "shortwave" just seemed like the best way to name the group.) You have to "define" best, when shopping for a radio. In a lot of consumer equipment, the radio sections are an afterthought, and certainly not intended for much beyond local stations. That's what most people are interested in, if they even care about radio, so there's no real incentive for manufacturers to design good radios. So if you ask for "best", it may turn out that the salesmen are thinking in terms of sound or some other function, when you are talking "radio that is good at receiving distant signals". And cost isn't necessarily a factor. Since an expensive stereo receiver may be sought after for sound and features, the cost may not be reflected in the radio. Of course, in the past, there were some very good stereo receivers with good reception qualities. I once got into an argument with someone about their having a "good FM receiver" when it turned out to be a portable shortwave receiver that included FM. They thought since they'd paid a lot for it, the FM section is naturally good. But the FM section would not use any of the circuitry from shortwave section, so it was a "feature" added to sell more radios, and the designer likely wouldn't have allocated much to the FM section, since it would raise the cost or reduce the shortwaver performance. Car radios have traditionally been good because of the environment they are operating in. One minute they could be near a radio station, and if they overload then that whipes out the other stations. The next, they could be way out in the middle of nowhere, where all the stations are distant. Or a combination, where you need to separate out a strong signal from a weaker signal. So car radios traditionally were designed better. An rf stage at the antenna, better selectivity in the intermediate frequency. Meanwhile, other AM/FM radios have pretty much kept the same design for decades, with very little innovation unless you get a really expensive radio. And since the "standard" design doesn't take into consideration much beyond local stations, there's no incentive to change. If this was for a non-portable use, the cheapest solution would be to buy a car radio at a garage sale for a few dollars, power it up with a power supply, and there you have it. A relatively decent redio for a few dollars. I've had a Delco digitally tuned radio next to my bed for a decade, and it's pretty much the best AM/FM radio I've had. Certainly on FM, it beats anything I've tried. (And if the need is semi-portable, get a speaker in a cabinet and strap the car radio to the top.) Most people never tune the bands to try for those distant stations, so they don't get an idea of what might be better. Distant AM stations at night are easy to receive, sensitivity isn't usually an issue. But separating them out may require something better. On FM, distant stations often require good radio conditions, so no matter what the radio, you will need height to get a distant station on a regular basis. But an FM receiver's ability to stand up to strong signals is important, because too many low end radios (and the expensive units that don't spend much on the FM radio) overload from strong signals. You can never hear the weaker signals, even when they are receivable, because the local signals overload the receivers and mask the weak signals. But here again, better selectivity becomes important, so you can hear the distant station that's adjacent to a local and far stronger signal. (And in the past, when radio was more important, there were high end receivers that dealt with this, having two selectivity positions, one for normal reception and a narrower one for when a signal was weaker.) Digitally tuned radios mean you are more likely to check those distant stations. Keep the local stations on the memories, and then tune around the band, knowing you can easily get back to the locals. Or when conditions are good, when you find a station pop it into a memory, so you can tune about while waiting for an identification on the first station. There are some FM stations here that are just over the horizon, and are receivable sporadically, and since I like the stations, I keep them in memory. It's really easy to check them, so I am more likely to check them. And digital readout makes it far easier to know what frequency the station is on (which helps to identifiy it's location.) Analog tuning has the advantage that when trying to deal with a weak signal adjacent to a stronger signal, being able to tune around a bit can sometimes help to separate the stations. You don't have that ability with digital tuning. Again, some of the better stereo receivers in the past included some odd (and I have no idea how successful) designs that tried to compensate for this, trying to give the best of both worlds). Or things like shortwave receivers allow for finer tuning steps. They'd allow 1KHz steps on AM because that's needed for shortwave tuning and the AM section is usually part of the shortwave section. And if they include FM reception, they might have 50KHz steps instead of 200KHz steps, to accomodate different standards around the world, but which incidentally allows for finer tuning on FM. Michael VE2BVW |
#6
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![]() Paul Ciszek wrote: I realize that this is the wrong sort of "radio" newsgroup, but I cannot find any newsgroup dedicated to consumer AM/FM receivers. I figure you folks would have opinions on the relative merits of digital vs. analog tuners. Which is better for pulling in a weak, distant radio station: a top-of-the-line analog tuner, or a digital tuner with quartz crystal oscillator, phase locked loop, etc.? I am seeking a "good portable radio". None of the portables that I have owned have been able to pull in weak stations as well as my no-name car radio. Now, according to what I was told in some courses over a decade ago, I thought the "best" radio receivers used a quartz crystal local oscillator and phase locked loop to "lock on" to the received signal. However, the high end radios people have been refering me to (like the Tivoli Portable Audio Lab) have analog tuners. I have to admit that part of the charm of a digital tuner is the laziness it allows: key up 1340kHZ or 91.5MHz and you're there. I doubt that my no-name car radio was expensive even when the car was new. There should be a portable radio out there that works at least as well. Any recommendations? It wouldn't necessarily have to have a speaker; headphones would be fine. One of the BEST things I have seen to improve AM radio reception is the Select-a-Tenna (http://www.selectatenna.com/). Tune your portable radio to the frequency, place the Select-a-Tenna next to the radio and adjust the Select-a-Tenna for best reception. No wires to connect, no batteries or power to plug in to. There are now other models of Selectatenna that are powered or can connect with wires to you receiver but I have been using one for years on a very inexpensive portable radio and I can pick up stations loud and clear that I couldn't even hear without it. I am not affiliated with the company that makes them, nor do I sell them. I just have one and am impressed with its performance. Please note this is for the AM broadcast band only. -- I have never met a liberal street cop. |
#7
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![]() Paul Ciszek wrote: [SNIP] Is there anything similar to the GE or Radio Shack that gets shortwave? More to the point: In the middle of the continental US (Colorado), can I pick up international news in English? Someone told me once that the BBC was going to stop its shortwave broadcasts for the US because we weren't offsetting the cost. The RS-12-903 is discontinued according to this reviewer: http://www.geocities.com/rbrucecarter/12_603.htm. and the GE SuperRadio 3 is an underperfomer according to this one: http://www.dobe.com/wts/funk/GESRIIIreview.html, but still available as a Thomson Multimedia product from Amazon.com. A high-value for money radio for MW, SW, and VHF-FM is the Kaito KA-1103, or the same radio direct from China via eBay, the Degen DE-1103. Highly sensitive, with good selectivity, digital display and tuning (oodles of memories) and capable of SSB/CW reception. User group at http://groups.yahoo.com/group/de1103/ . Many user reviews at http://www.eham.net/reviews/detail/5071 with a 4.7/5 average rating (that's a value rating not a performance rating). The Eton E5 is similar electronically (same factory) but with a better user interface; its price is in the range of the Sony 7600GR but latter has synchronous AM detector for reduced distortion on fading signals - reviews http://www.eham.net/reviews/detail/1534. Tom |
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