Category Archives: AM

Bayrischer Rundfunk to shut down four MW transmitters end of September 2015

Many thanks to SWLing Post reader, Alexander (DL4NO), who writes:

“Today I found a message that Bayrischer Rundfunk will shut down its four MW transmitters at the end of September:

http://www.br.de/unternehmen/inhalt/technik/mittelwelle-abschaltung-radio-100.html

The two higher-powered transmitters (Munich 100 kW, Nürnberg 20 kW) are on 801 kHz. The two smaller transmitters (Würzburg and Hof, both in the northern part of Bavaria) are on 729 kHz. The message also says that the BR is intensively updating its DAB+ transmitter net.

Personally I see positive and negative aspects: the 100 kW transmitter is about 15 km from here. Ist field strength tests the large-signal capabilities of my active receiving antenna. The negative aspects should be obvious.”

This is a very good point Alexander. When I listen to clear channel MW stations here in the evenings, I often wonder what it must be like for radio listeners nd amateur radio operators living in close proximity.

Many thanks for relaying the message about Bayrischer Rundfunk.

Shipping Forecast tribute

1 Reply

Many thanks to @realmarkfahey who shares this tribute to the Shipping Forecast via Twitter:

For anyone who's ever fallen under the hypnotic spell of The Shipping Forecast, a short tribute to its charm: http://t.co/BtGzby8fRE #R4in4

— BBC Radio 4 (@BBCRadio4) April 24, 2015

If the embedded tweet above does not appear, click this link to listen via the web.

Urban go-kit

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My good pal David Korchin (K2WNW) posted the above photo in his Facebook feed yesterday, simply titled, “Today’s carry.”

David is very much a kindred spirit; like me, he is constantly tweaking his go-gear. He works in New York City and likes to have his essentials with him there––radio included, of course. Since he’s a professional photographer, he never leaves home without the Lumix GF1 + Leica 20MM, very nice gear. Since he’s a ham and an avid ARES guy, he carries a Motorola XPR7550 UHF transceiver. And since he’s a radio listener, he carries the CC Pocket AM/FM radio.

True, he doesn’t have a shortwave radio in this kit, but he certainly takes his shortwave with him when traveling any further afield. Indeed, we once did some field work in Belize for ETOW and enjoyed a great SWLing session with the our Grundig G series receivers. Made for great comparison.

What’s in your kit?

Someday soon, I’ll take some photos of the kit that accompanies me most everywhere I go. In the meantime, we’d love to know what’s in your go-kit! If you have one, take a photo and add a few brief notes describing everything in it. I’ll post it here on the SWLing Post!

PS: For those who want to know, here’s David’s description of the above, in his own words:

“CLOCKWISE: Motorola XPR7550 UHF transceiver; Lumix GF1 + Leica 20MM; Moleskin folio notebook; Lamy Safari fountain pen; vintage Zippo lighter; Mercator lock blade penknife; CCrane Pocket radio; Sony El Cheapo™ earbuds; Luminox ANU Watch; iPhone; CENTER handmade leather card case from YXE, because Canada.”

Brilliant…! Thanks, DK!

LeBlanc to crack down on pirates

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Many thanks to SWLing Post reader, Bill Patalon, who writes:

FCC’s LeBlanc wants to really crack down on Pirates …. And the “C” goes after the SW buccaneers as well as those on the commercial BCBs …

http://www.radioworld.com/article/leblanc%E2%80%99s-goal-is-no-pirates/275622%20

While the FCC is busy sabre-rattling, they should also think about ways to diversify the broadcast airwaves legally. There is a significant entry barrier for any would-be broadcaster on the FM and AM bands.

In fact, a quick glance at the procedures to apply for a new AM or FM station licence on the FCC website is discouraging: as of today, they are not accepting applications for new stations. And the FCC wonders why there are so many pirates?

Thanks again for the link, Bill.

Sangean WR-15: great looks, but poor performance?

1 Reply

Jeff, over at the Herculodge, writes with some disappointing news:

What a shame John bought the WR-15 and thinks it stinks: http://herculodge.typepad.com/herculodge/2015/04/john-cannot-recommend-the-sangean-wr-15-radio-due-to-subpar-am-and-fm.html

Oh, that is a shame. An AM/FM radio with poor AM/FM sensitivity has little appeal (even if it has a great chassis).

John (the reviewer) mentions what sounds like a squelching effect during tuning as well–when a strong signal is received, volume increases with the “lock.” Perhaps a sign this Sangean receiver is powered by a DSP chip and isn’t analog at all?

I expected something better from Sangean. At least the WR-15 is one thing I can safely pull off of my Amazon wish list!

Tinkering with the Credit Card Crystal Radio

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A few weeks ago, we published a short post about a credit card crystal radio from an eBay seller in the UK.

I purchased a kit–at $17-18 US shipped, it’s quite a modest investment for what might be a fun little project.

The crystal radio arrived while I was traveling during Easter break, but my free time has been so (extremely) limited lately, I was only able to unpack and try out this new arrival yesterday.

The biggest surprise for me was the fact that this isn’t really a kit–the board is fully populated and requires no soldering whatsoever. The board feels of very good quality.

All that is required is connecting the high-impedance earphone, earth/ground and aerial/antenna to the board. Since all of these components can be connected with the supplied alligator clip cables, getting it on the air took all of 20 seconds. I simply hooked up the ground and connected the aerial to my sky loop wire antenna.

I instantly heard a signal and station ID which confirmed it was our closest local broadcaster on 1010 kHz. This station isn’t of the blowtorch variety, but is the strongest one I receive on the MW band simply due to its proximity. Audio was quite faint through the earpiece, but I believe if I tinkered with antenna length and the two variable capacitors, I could improve reception.

SWLing Post reader, Richard Langley, received his crystal radio and had a very similar experience with reception.

Credit-Card-Crystal-Radio-4

With any crystal radio (especially one this small), performance is directly correlated with antenna length, availability of a good ground connection and, of course, strong broadcasters in your vicinity.

I plan to spend an evening tinkering with this little receiver and see if I can pick up some of the night time powerhouse AM stations on the east coast.

I can say this: if you’re looking for a simple, uber-compact emergency receiver for your go-bag, bug out bag or emergency kit, this one will certainly fit the bill. This crystal receiver and all of its components weight no more than a few ounces and could easily fit in compact pouch or sleeve.

Have any other readers have enjoyed tinkering with this little emergency crystal radio?

If you would like to purchase one, try searching eBay with one of the links below. The product will only appear in the search results if currently available.

Search via eBay US (best if you’re in the USA, but scroll to bottom of screen to see this item under “International Sellers”)
Search via eBay UK (best if in UK or EU)