Monthly Archives: April 2015

A true fashion statement: the “Man-from-Mars Radio Hat”

Customer fumbling with the tuning knob a

(Source: Mashable)

Inventor Victor T. Hoeflich, founder of novelty manufacturing corporation American Merri-Lei of Brooklyn, New York, introduced his “Man-from-Mars Radio Hat” in March 1949.

In the press conference, he used teenagers as models. Sold in department stores across the U.S. and by mail, the hat retailed for $7.95. Designed after a pith helmet, it could be ordered in eight colors: Lipstick Red, Canary Yellow, Blush Pink, Rose Pink, Tangerine, Flamingo, Chartreuse and Tan. Later seven more color options were added.

Although the hat had a futuristic appearance at the time, this was in fact due to technical limitations. While the transistor had been invented in 1947, it was still experimental and not widely available. And portable transistor radios did not appear until 1954. The hat’s radio relied on valve technology, and Hoeflich made the valves a prominent feature, as well as the loop aerial. The tuning knob sat between the two valves.[…]

Continue reading on Mashable.

A blueprint for RadioShack’s “re-birth”

RadioShack-StoreClosing-2

Many thanks to SWLing Post reader, Mark, who shares this article from the New York Times which describes the plan a hedge fund is implementing to strengthen 1,700 existing RadioShack stores:

RadioShack will slim down to become an electronics convenience store of sorts, focusing on things like Bluetooth headsets, chargers and other accessories that shoppers may need immediately rather than waiting a day or two for shipment of a web order. One of the most profitable RadioShack stores is a Bridgehampton, N.Y., outlet that is frequented by weekend vacationers who have forgotten their smartphone chargers or earphones. And one of RadioShack’s top-selling products is hearing aid batteries.

Tablets, laptops and digital cameras will disappear from RadioShack stores, and mobile phone sales and services will be handled by its new partner, Sprint, all of which affects just 7 percent of RadioShack’s sales. Remaining product lines will also shrink, to 60 headphones from about 180, for example, and to just one fitness wristband from 34.

In an interview, Ron Garriques, a former Dell and Motorola executive chosen last week to lead the new RadioShack, said the chain would also focus on small cities with populations of 5,000 to 100,000, where demand still exists for a neighborhood electronics store.

When he and the Standard General team studied the old RadioShack’s 4,200 stores by profitability, they found that the best-performing stores were not in big cities or fancy malls, where the rents are high and competitors also sell electronics. Most of those stores will close. The number of stores in Manhattan, for instance, will fall to just three from more than 30.

But in many smaller communities, Mr. Garriques said: “RadioShack is part of the neighborhood.  We are the ‘go to’ store for electronics.”

Read the full article at the NY Times website.

Portable antennas: a review of the Par Electronics EF-SWL

Last August and part of September, I traveled through the US with the CommRadio CR-1 and a couple of portable antennas: the Par Electronics EF-SWL and  NASA PA-30. I had the opportunity to try both in the field, and took notes as I used them. Following is a short review of the Par Electronics EF-SWL.

The EF-SWL ready to deploy.

The EF-SWL ready to deploy with my Spec.-Ops. Brand “All Purpose Bag.”

Par Electronics EF-SWL 

At the Dayton Hamvention last year, I had the pleasure of speaking with representatives of the North Carolina-based LNR Precision Inc. LNR is a mom-and-pop company with a focus on providing antennas, keys, and transceivers for the ham radio and shortwave listener markets.  Indeed I have several SWL friends who use on a daily basis an antenna this company manufactures and retails: the Par Electronics EF-SWL. LNR asked if I would consider reviewing their antenna, and since I was planning a road trip with radios in tow–the perfect opportunity to test such an antenna–I agreed.

The Par Electronics EF-SWL is an end-fed shortwave antenna designed for 1-30 MHz reception. It’s a receive only-antenna–perfect for the SWL. The radiator is 45 feet of #14 black polyethylene coated Flex-Weave wire. When I first used the EF-SWL, I noted the quality of its construction: no doubt it can withstand many deployments in all weather conditions–and it’s manufactured here in the US.

With a 45′ radiator, the EF-SWL needs a little space, but offers more gain than the other portable antenna I packed, the NASA PA-30 (look for its review in the near future). I put the EF-SWL to use in New Mexico where several large trees were readily available. I hooked the EF-SWL up to the CommRadio CR-1 and simply hung the end of the radiator as high as I could in a nearby tree. Though not a picture-perfect installation, it nonetheless certainly did the trick! I didn’t bother with a ground connection as I wasn’t in an area with much radio noise (RFI).

In the past, when setting up portable ham radio and shortwave listening, I’ve typically built my own antenna either for the specific meter band I hoped to use, or brought along a portable antenna tuner. It was quite nice having an antenna designed to be resonant on the broadcast bands.

Par-EF-SWL

Though I didn’t do this, I did noticed that the EF-SWL’s radiator is attached via a stainless stud–Par Electronics did this so you can remove the radiator and replace it with a different wire length. With the stock 45′ radiator, I still find the EF-SWL quite portable, especially when compared with most of the portable amateur radio antennas I use, which tend to take a dipole or delta loop configuration.

After returning from my trip, I decided to hook up the EF-SWL at my home base for longer-term evaluation. These past months I’ve had it on the air as an auxiliary antenna, and I’ve been impressed with its performance. In truth, it’s not in an optimal location hanging off the corner of my house, but I think this may actually represent with some accuracy the installation most SWLs will likewise be able to provide–in other words, placement that must factor in antenna restrictions or limited space. Of course, for any permanent installation, you will need to ground the EF-SWL for lower noise reception.

And yet, even in these suboptimal conditions, the antenna performs remarkably well.

As with any exterior antenna, of course, take precautions against lightening if you live in an area with thunder storms. If nothing else, at least disconnect the antenna when not in use.

Moving forward, I will plan to relocate the EF-SWL to a more ideal permanent location and most likely purchase another to keep in my antenna bag. I hope to use this antenna in a DXpedition I’ve planned later this year.

The EF-SWL retails for $75 US directly from LNR Pecision or $72 US from Universal Radio.

Note that LNR also sells a number of QRP field-portable transceivers: the LD-5, FX-4a and Mountain TopperClick here for more details.

Cambridge 105 goes pirate for Good Friday

Cambridge-105(Source: Southgate ARC via Thomas Ally)

Cambridge 105 goes pirate – including on 6,070 kHz – for Good Friday

Community broadcast radio station Cambridge 105 is throwing away the modern technology and returning to the era of pirate radio for Good Friday.

Setting up turntables and cart machines on the Riverboat Georgina on the River Cam, we’ll be broadcasting from 10am to 10pm, covering everything from the early days of offshore radio in the 1960s to the end of the era in the early ’90s.

We’ve also teamed up with the DARC-run Channel 292 shortwave transmitter on 6070kHz for the day, so SWLs should be able to hear us there across much of Europe.

Dom M0BLF will be handling QSL cards for anyone who does hear us on HF.

Cambridge 105 is run entirely by volunteers, including a good number of licensed amateurs, both on the engineering and presentation side of the station.

73,

Rob, M0VFC

PCJ Radio International broadcasts to Europe

pcj(Source: PCJ Press Release)

Beginning April 18th, 2015, PCJ Radio International will have a week of programs broadcast to Europe. The one hour transmissions will be our service to the Pacific.

Time: 2000 – 2100 UTC

Schedule
April 18 – The Happy Station Show
April 19 – The Stuph File Program
April 20 – Focus Asia Pacific/Switzerland In Sound
April 21 – Jazz For The Asking
April 22 – Nash Holos
April 23 – Focus Asia Pacific/Vintage Media Network
April 24 – Media Network Plus/Special Program

Special QSLs will be issued for this transmissions.

Frequency: [UPDATE] 9405 kHz

Radio Exterior de España: updated shortwave broadcast schedule

RadioExteriorDeEspana

Radio Exterior de España has posted an updated broadcast schedule (in Spanish) on their website. I have translated and pasted the shortwave schedules below:

Radio Exterior de España transmits its programming from 18:00 to 22:00 hours, Coordinated Universal Time, Monday through Friday. Broadcast frequencies and coverage areas are:

  • Africa and South Atlantic, 15,450 Khz , 19 meter band.
  • South America, 17,715 Khz , 16 meter band.
  • North America, 17,855 Khz , 16 meter band.
  • Middle East and Indian, 15,490 Khz , 19 meter band.

And on Saturdays and Sundays:

  • Africa and South Atlantic, 21,620 Khz band of 13 meters (14 to 18 hours), and 15,450 kHz band of 19 meters (18 to 22 hours).
  • South America, 17,715 Khz band of 16 meters (14 to 18 hours).
  • North America, 17,855 Khz band of 16 meters (14 to 18 hours).
  • Middle East and Indian, 15,490 Khz band of 19 meters (14 to 18 hours).

(In case you’re keeping tabs: yes, REE is still on the air, though basically as a relay of RNE.)