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Are HD radios made with crappy tuners?

I hesitated even to publish this post because the argument behind it is so isolated and anecdotal. But I’m putting it out there so you, dear friends, can tell me this singular – and very highly publicized – trashing of the quality of some of our most prominent HD radio models is wrong.

As engadget says:

Richard Menta of MP3 newswire clues us in to a dirty little secret on the consumer side of things: most of the hardware on the market today sucks. Specifically, Menta put three current models (Boston Acoustics’ Recepter Radio HD, Polk Audio’s I-Sonic Entertainment System, and the Accurian HD Radio from Radio Shack) up against three analog units he had lying around the house (his car stereo, a cheap Sony shower radio, and just for fun, a 1940 Zenith tube radio), and much to his surprise, even the crappiest of the latter group was able to pick up analog stations better than the most expensive HD device. Furthermore, the HD models did a terrible job picking up the digital stations they’re meant to highlight in signal-rich central Jersey, as they were only able lock in one of the 13 channels promoted by the HD Radio Alliance with any regularity.

Luckily this poor performance seems due to the lack of sensitivity in the tuners these radios are built with — an issue that’s easily solved – so the real question is whether manufacturers have the will to start tossing better parts in. If not, things don’t look very good for HD Radio.

HdradiosIs this true more generally? Or is this just a function of one isolated New Jersey address? Radio, after all, always has reception trouble somewhere, no matter where you live. But a new radio with new technology certainly shouldn’t work worse than your old equipment at the same address.

Is HD radio being stabbed in the back by the very manufacturers who make the equipment?

Given the radio industry’s investment in this technology, it seems to me we deserve a clear answer.

8 Comments;
  • Greg

    Mark,
    I wonder, how much of the reception problems with HD radios are due to the fact that the digital IBOC sidebands are only broadcast at 1/100th the power levels of the main analog channel, as to not interfere with the analog portion – the author did not address this potential problem. This seems to be a catch-22 situation for HD Radio – while in hybred-mode, HD reception may always be an issue, so how would a full-digital mode ever be approved by the FCC, with very few HD radios in the hands of consumers, which is unlikely to change.

  • Greg

    Mark,
    Sorry, to have to post again, but I just ran across this comment, in the engadget article:
    Steve Mar 28th 2007 8:32AM
    “I bought an HD radio last December, and my experience bears this article out…in spades! I live in central NJ and the reception was horrible! I actually pulled my 30-year-old clock radio back out of the garbage and immediately resold the HD radio on eBay for just about what I paid. Good riddance.”

  • Jeff Schmidt

    My first experience with an HD radio immediately brought out a cynical thought – they made the analog radio sound crappy so the “swtich” over to HD sounded better.
    As suggested here – the truth is probably far simpler.
    They’re just making crap quality radios.

  • http://profile.typekey.com/RichWood/ Rich Wood

    I own a Radio Shack Accurian. In my market there’s no audible difference when the radio switches to digital on any IBUZ station. There’s about 8 seconds of analog before digital kicks in.
    There’s a 2200 watt station here. That means the digital is 22 watts. Combine deaf receivers, wimpy stations and secondary channels that are only remixes of the main and you’ve got aggressive consumer apathy.
    Remember: this technology generates no revenue. In many cases, there’s no one monitoring for hours or days at a time.
    I’ve reported dead digital channels and have been greeted with anger. The whole system is crappy.

  • Old Grouch

    “…digital IBOC sidebands are only broadcast at 1/100th the power levels of the main analog channel… [T]he author did not address this potential problem…”
    True, but not the USER’s problem. Users don’t (have to) care– it’s supposed to work. And how do you address: “To be blunt the sensitivity of this piece of 65 year-old technology blew the HD receivers away”?

  • J

    HD is great technology … However most AM Radios built 65 years ago were far better than ANY trash made in the last 25 years! (HD or Analog) And now it’s all made in CHINA … get used to it, USA only makes a couple ultra pricey esoteric radios now! In fact do we make anything nowdays? And toss those silly pieces of wire they give you and call an antenna … get a real antenna and a rotor mounted outside … DEMAND BETTER ~ BITCH TO THE MANUFACTURERS and FCC! Anyone want to help me build a real radio? The FCC should demand any radio not meeting certain requirements to be labeled “TOY RADIO”!!! Like all of the newer SONYs I’ve owned and 96% of every radio out there on the market today. I’ve had 5 different HD radios and another on the way … Must have a REAL outdoor antenna in every case (the car head units seem to have better tuners but most no multicast so far) The Panasonic CQ-8901(?)is good for HD1 AM/FM

  • Thomas Wells

    The sensitivity of the modern tuners is probably not as bad as it would seem. The real reason the Zenith tube radio excels compared to the HD receivers is that these radios
    all have digital displays, and the internal clock noise to drive the display and read the input controls is darn near impossible to filter out,
    as they actually broadcast
    wideband RF noise which easily intermodulates with the desired signal on AM.
    The larger, flat wire loop as used in the old days has greater “pick up” than a modern ferrite core loop.
    The Zenith, with vacuum tubes also enjoys “conversion gain” in the first tube, a pentagrid mixer, whereas transistor-based tuners only mix the incoming frequency to convert to the IF frequency, and there is no gain in this first stage of the circuit.
    No companies seem willing to build a radio out of actual physical parts anymore, and the results as seen here are why I call all these things “radio emulators”.
    If it can’t be tuned in analog, like a guitar, it’s not a radio. Maybe what ibiquity should sell is modems with 455 khz inputs, then we could use our own good tuners, and feed the IF signal to the modem/amplifier.
    I wouldn’t hold my breath waiting for manufacturers to rediscover the advantages of discrete parts in RF design.
    As with so many things, it is very hard to fight cheapness, as most users can’t see where they’ve been cheated. In this case, the poor results are very easy to hear.

  • AB9GO

    The real reason the Zenith tube radio excels compared to the HD receivers is that these radios
    all have digital displays, and the internal clock noise to drive the display and read the input controls is darn near impossible to filter out,
    as they actually broadcast
    wideband RF noise which easily intermodulates with the desired signal on AM.
    Not true. I own several digital display analog radios that do not have the type of interference that the HD’s do.
    All it takes is proper shielding. The old radio in my 87 Chevy truck has a LED readout and those generate the most interference next to nixie displays. My radio is dead quiet (no RFI) between the channels and is quite sensitive and selective. Delco did it right. My JVC HD auto radio does not suffer from internally generated RFI either. It also functions quite well on the 2.5 to 3 foot antenna on the car. AM and FM. Try that with a Boston, Polk, or Sony! I have a 1990′s vintage Radio Shack clock radio that BLOWS AWAY the Polk in the ability to receive local stations. I would like to try the Sangean tuner. I hear it is much, much better.
    Randy AB9GO

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MRM President Mark Ramsey has worked with innumerable television and radio broadcasters over his career, including all the biggest names, from Clear Channel, CBS, Bonneville, Sirius XM...

Mark Ramsey