Yearly Archives: 2014

DXpedition at a radio astronomy observatory: Want to join me?

Yesterday evening, prior to my presentation at the Pisgah Astronomical Research Institute (PARI), I took the opportunity to do a little portable shortwave listening on the PARI campus.

Shortwave-Radio-Astronomy-PARI

One of the great things about listening to shortwave, mediumwave or longwave at a radio astronomy site is the blissful absence of any radio noise. Radio astronomy requires seriously RF-quiet conditions, and all the better for SWLing, too. My little Tecsun PL-380 receiver easily detected most everything on the 31 meter band; All India Radio (and the Voice of Korea on the same frequency), for example, was as strong as a local station.

DX among the radio telescopes: Sound fun–?

Next year, in October 2015, I might just organize a radio listening DXpedition at PARI. It would be a wonderful opportunity to DX in an RFI-free environment in the beautiful mountains of western North Carolina, on the 200+ acre campus of an active radio astronomy observatory and former NASA tracking station. (Really, how cool is that?!?)

PARI has agreed to handle all of the arrangements, and even provide some dorm rooms and camping space to the first registrants. There will be a fee for the event (to pay for the facilities and PARI staff time) but any profit would benefit PARI’s science education mission. The fee would be based on the number of attendees and how many nights we operate–I’d aim for two nights, on a Friday and Saturday (October 9 & 10, 2015).

If you would be interested in a shortwave listening DXpedition at PARI in Rosman, North Carolina, USA, please contact me or comment below. Click here to track the distance to PARI.

Note: the autumn foliage, for which the NC mountain region is famed, will be at or near its peak during the time of the DXpedition.

PS–Bonus: A dish in motion

As I departed the PARI site late Friday, an astronomer programmed the rotation of the East radio telescope, an awe-inspiring 26-meter parabolic antenna. I snapped a couple of shots with my iPhone. It was truly impressive, this massive radio telescope slowly turning to some distant star or galaxy to acquire new data. See for yourself (for a sense of scale, see the fence at the base):

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beHAVior Night celebrates 8 years on WBCQ

The Japan Radio Company NRD-383 SDR carries a hefty price tag

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Many thanks to Dave Zantow (N9EWO) who relays this info regarding the new NRD-383 via Takahito Akabayashi:

[The JRC] NRD-383 is sold by “Defense Systems Sale Division” of JRC, so this SDR receiver is especially for military use.

The price is more than $50,000 [each].

Recent JRC products [have] nothing to do with amateurs.

Takahito Akabayashi
Tokyo, Japan

OK, I think I can safely remove the NRD-383 from my wish list. At $50,000 each, this is indeed a receiver intended for government and commercial use.

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RTÉ underestimates need for longwave service

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(Source: The Irish Post)

WITH fewer than three weeks to go until RTÉ Radio 1 brings its historic longwave service on 252 to an end, the Irish community in Britain has responded with fury and dismay.

The move, which was announced with just over a month’s notice, is part of the Irish broadcaster’s new focus on digital platforms.

But the decision to cease transmission, from October 27, was described as a “bitter blow” to Irish people in Britain as well as parts of the North of Ireland.

Eddie Walsh, who is PRO of The Workers’ Party (Britain) in Nottingham, said: “Other options are not open to all of us. I cannot get RTÉ on my car radio except on longwave and I certainly do not want to listen to it on my computer. The current radio ads only refer to the island of Ireland, thus not even mentioning those of us on this side of the Irish Sea.”

He added: “I would suggest that the station has underestimated the number of listeners.”

Meanwhile Irish Post reader Sean O’Rinn said: “I have a small radio beside my bed and listen to RTE on 252 every night. There is no way that I can use any digital apparatus in its place. There must be thousands of Irish people here in England who are in a similar position — we will become completely isolated from our native home.”

The loss of the longwave service comes after the broadcaster closed its London offices in 2012. Tom McGuire, Head of RTÉ Radio 1, estimates that no more than 2,000 people use its service.

RTÉ said that 98 per cent of its Radio 1 listeners would be unaffected by the move. It added that to measure longwave listening numbers in Britain would prove “a prohibitive service cost”.

Continue reading online…

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Building the Ozark Patrol regenerative receiver kit

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Last week, I received the Ozark Patrol regenerative receiver kit that I had only ordered a few days prior. I was so eager to get started on the build, that I read the instructions, lined a cookie sheet with aluminum foil and began placing the parts on the board within an hour of bringing the package home from the post office!

This was my first time building a “Pittsburg” type kit, where through hole components are surface-mounted on soldering pads. It’s a brilliant technique which is very forgiving if the kit builder accidentally mounts the wrong part or mounts a component with the incorrect orientation.

I had hoped to have the kit finished the following day, but other priorities took precedence: I’ve been preparing for my presentation tomorrow at the Pisgah Astronomical Research Institute, preparing a shortwave radio buyer’s guide for the November issue of The Spectrum Monitor magazine, and putting together the results of the Virtual Radio Challenge II (which will be published early next week). Fortunately, I love doing this stuff in my spare time!

I’m eager to pick the Ozark back up early next week and finish the build. It’s become somewhat of a dangling carrot–a reward for finishing other projects in advance. I can’t wait to hear this simple regen receiver come to life!

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VOA Reduced TV to China during Hong Kong protests

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The website BBG Watch recently posted a guest commentary from an anonymous VOA reporter regarding the loss of VOA Weishi TV during the Hong Kong protests. Here is an excerpt from BBG Watch:

“On Monday, September 29, the loyal viewers of Voice of America (VOA) “Weishi,” the VOA Mandarin TV program, were surprised to see their TV screen turned into a blue graphic during some hours when the original program previously aired was repeated. In the place of the professionally produced VOA TV broadcast, audiences received radio signals from Radio Free Asia (RFA).

Audience surveys, although underestimating the viewership because many Chinese are reluctant to share sensitive and potentially dangerous information with strangers, show that the popularity of the 2-year-old VOA “Weishi” is growing by leaps and bounds in China. Some of its segments, including “History’s Mysteries,” “Pro&Con” and “Issues and Opinions,” already also attract many millions of viewers on YouTube. The management’s decision to take away some of the repeat hours from the “Weishi” programs will be devastating to VOA’s Mandarin broadcasting. Meanwhile, it will not help RFA, since very few people listen to radio via TV. If they do, there are existing channels leased by the International Broadcasting Bureau (IBB) to broadcast radio programs via satellite to China and Tibet. IBB reports to the Broadcasting Board of Governors (BBG), the federal agency and the bipartisan Board in charge of all U.S. taxpayer-supported media for audiences abroad.”

Read the full commentary on the BBG Watch website.

I listened to China Radio International a few times during the peak of the protests and–no surprise–there was absolutely no mention or even hint of an uprising. Indeed, China has been actively blocking international TV news outlets like CNN and social media sites like Instagram.

China is ranked as one of the worst countries in the world in terms of press freedoms–175th out of a possible 180 countries on the 2014 World Press Freedoms Index.

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