Tag Archives: AM

Ajit Pai is trying to save AM radio “before it’s lost in the static”

Analog Radio DialMany thanks to Andrea Borgnino for pointing out this article in today’s New York Times regarding one man’s quest to save AM radio from impending noise (QRM):

The digital age is killing AM radio, an American institution that brought the nation fireside chats, Casey Kasem’s Top 40 and scratchy broadcasts of the World Series. Long surpassed by FM and more recently cast aside by satellite radio and Pandora, AM is now under siege from a new threat: rising interference from smartphones and consumer electronics that reduce many AM stations to little more than static. Its audience has sunk to historical lows.

But at least one man in Washington is tuning in.

Ajit Pai, the lone Republican on the Federal Communications Commission, is on a personal if quixotic quest to save AM. After a little more than a year in the job, he is urging the F.C.C. to undertake an overhaul of AM radio, which he calls “the audible core of our national culture.” He sees AM — largely the realm of local news, sports, conservative talk and religious broadcasters — as vital in emergencies and in rural areas.

“AM radio is localism, it is community,” Mr. Pai, 40, said in an interview.”[]

Continue reading the full article on the New York Times website.

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Paul reviews the mystery radio

Many thanks to Paul for providing this review of his mystery radio (see previous posts):

MysteryRadio2This is a basic AM/FM radio with clock and alarm functions. It runs off three AA batteries (for the radio) or a 1.5 V small cell battery (for the clock). There is also the option of powering it with an AC adapter (4.5 V DC, center positive). The speaker is 8 ohm, 0.5 W. As Ulli pointed out the three AA batteries are a very tight fit. Besides radio and alarm, there is also a headphone jack.

The SET and DIS buttons on the radio are for setting the clock and alarm. In absence of a manual it took a little time to figure out how to do this. The clock LCD tilts up as shown in the photos. Needless to say the viewing angles leave much to be desired. This radio is meant to be used laying on a table; it has a curved bottom and cannot stand up on its own.

MysteryRadio1In terms of performance, it’s good for powerhouse AM and FM stations. DXing is very limited or next to impossible due to the stiff tuning knob (you need two fingers to move it around; the dimple is not helpful) and the short circular tuning range. It’s hard to tell whether the radio has below average built-in selectivity with the Sony CXA1191S chip, or are problems zeroing in on stations due to the poorly designed knob. In my unit the volume knob was scratchy; this was easily fixed with a little DeoxIt spray.

MysteryRadio3Among other curious things about this radio is its antenna, which goes out only at a fixed angle – not straight up. It can be moved from left to right at this angle and extended.

Overall this is a basic AM FM clock radio, measuring small (6.25 x 3 x 1.25 inches), and honestly, nothing really special!

Paul, thanks for the review and great photos of your radio. It might not be a performance machine, but it was fun solving the mystery and reading your review of this obscure little radio! -Thomas

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Mystery radio identified

Click to enlarge.

Click to enlarge.

Wow, that was quick! Many thanks to Ulli who solved the case of the mystery radio we posted yesterday.

Ulli comments with details:

The radio was a giveaway about 1995.
I opened it :
1 IC Sony CXA1191S 314J22V , 5 Transistors , 3 -band filter , 5.5 cm speakers , 8ohm , 0.5 W.
Today’s AA batteries are a bit too long, the 3 AA not quite fit into the battery tray .
The display with the time can be tilted .
On the back is a sticker :
AM / FM CLOCK RADIO LCD , DC POWER SUPPLY , RADIO DC 4.5 V, 1.5 V DC CLOCK ,
ART No. 05796-07 , CENTRON LABORATORIES LTD .
and on housing :
U.K.REG.NO.2013420 .

Thanks, Ulli!

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Bill helps with low-power, license-free broadcasting

HobbyBroadcasterIn reference to our post, Dave’s FM Station Empire, SWLing Post reader Bill writes:

Nice article on the use of low power broadcasting. For the last 5 years my site, HobbyBroadcaster.net, has been helping radio enthusiasts along with schools and businesses learn how to use legal, low power, license-free Part 15 radio for a variety of uses. I created the site due to my involvement with starting a campus-limited high school station and discovering the lack of quality resources available for school-based broadcasters unable to obtain an FCC allocation. With many hobbyists also using this same technology on AM to serve their neighbors with micro radio it only seemed natural to expand the interest to hobbyists, too.

Also, Part 15 regulations allow for some use of the shortwave bands for experimental broadcasting with the most common frequency used by hobbyists being 13.56 MHz.

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C.Crane: CC Witness on sale, while supplies last

The C.Crane CC Witness

Though not a shortwave radio, the CC Witness is a very capable AM/FM radio with a built-in digital recorder.  In fact, I know of no other portable with on-board digital recording that receives such stellar reviews. As a result, many medium-wave DXers use the CC Witness while traveling, to capture the sounds of the local radio scene on the go.

For ages, the CC Witness was priced well over $200 US.  Right now, C.Crane is selling their stock of CC Witness radios for $99.95 US.

Clearly, this is an excellent bargain for anyone seeking a very small portable AM/FM radio with on-board digital recording. Note that the CC Witness will also do line-in recordings from other audio sources.

Follow this link for details.

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A review of the Sony SRF-59 — cheap, fun Mediumwave DX thrills

The Sony SRF-59

A few years ago, I heard a lot of buzz in AM/Mediumwave radio circles about a small, inexpensive radio called the Sony SRF-59. Discussions were focused on the incredible performance of this diminutive low-cost radio and how it held it own against some real benchmark receivers. Out of curiosity, I did a search on the radio to see what it looked like–I expected some Tecsun PL-like unit–and found that, much to my surprise, it’s a simple, analog, totally unassuming AM/FM walkman.  Say, what?

The far biggest surprise came with my price search, however. The SRF-59 is easy to find at $14.95 US. Really, you ask? Oh, yes–and it’s readily available at many online and big box stores.

So–carefully counting my pocket change–I took the plunge, and bought one.

The radio came in a basic plastic blister pack, and it also included headphones. I can’t comment on the headphones as I didn’t even bother unpacking them; instead, I plugged my new SRF-59 into my favorite Sony earbuds.

I have to admit, the AM band on this little radio does indeed shine. Not only is the receiver sensitive and relatively selective (meaning, I don’t hear adjacent signals when tuned in), but it also has excellent audio.  Amazingly, it lives up to all of the praise I had heard about it. I’m quite amazed, in fact, at how well this little unit can null out stations by rotating the radio body a few degrees. Most impressive.

Though I’m no major FM radio listener, I can also vouch for its FM performance, which is quite good.

Pros:

  • lightweight–indeed, one can safely say, “ultralight”
  • very inexpensive, by comparision
  • operates almost indefinitely on one AA cell
  • simple design, durable construction
  • AM (Mediumwave) sensitivity and selectivity comparable to $100 shortwave portables
  • because tuning is analog, it works in North America just as well as in Japan (see cons)
Cons:
  • tuning is analog, thus no stations can be saved to memory and there is a noticeable amount of receiver drift if listening over long periods of time
  • no fine-tuning mechanism means that tuning in weak stations takes precision skill on the SRF-59’s very small dial
  • no built-in speaker (this is a Walkman, after all)
In summary, you will regret not purchasing this radio should Sony pull it from the market without warning. While it is a walkman with the above listed limitations, it’s nonetheless a first-rate AM/MW receiver and might be a great avenue into the fun hobby of ultralight DXing.
In short, the Sony SRF-59 is a real gem. But don’t take my word for it, either–go check one out for yourself!
Where to buy:

  • B&H photo
  • Amazon

 

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