Review of the Airspy R2 SDR Radio

Could there be a radio better than the Sony XDR-F1HD?  My answer would have been a resounding “no,” that is, until I came across the Airspy R2.

The Airspy R2, which retails at $169 as of the time of publication, is a software-defined radio, or SDR.  A “mini” version with a few less bells and whistles retails for $99.  With an SMA to Coax adapter, $5 on Amazon, the supplied USB wire, and free SDR tuning programs (more on that below), you have all you ever need for Continue reading


To share or not to share: privacy, social media, and DXing

DXing can be a very social hobby.  With annual conventions, message boards, and email lists giving DXers a chance to be heard worldwide at the click of a button, it can be hard to keep anything to yourself.

Advances in technology in the past decade has made it simple to share anything and everything about DXing on multiple social media and file sharing platforms.  One could post a dial scan video on YouTube, photos of their shack on Facebook, or a reception report on a propagation logger.  It can bring people with like interests together in an inviting environment, as well as allow new people to discover what DXing has to offer.  It’s easy to be social in today’s world.

But for some, there is a fine line between being an open book and Continue reading

Review of the Insignia NS-HDRAD2 radio

Insignia NS-HDRAD2. Click to enlarge.

My beloved Sony XDR-F1HD radio recently developed a problem where its audio output became garbled with a hum, rendering it useless for DX.  As I often used the F1HD on airplane trips where bringing my larger radios were impractical, I have been on the search for a replacement radio with HD Radio capabilities.  I found the Insignia NS-HDRAD2, which at the time of writing, is $49.99 at Best Buy, but is cheaper on eBay.

I’ve been eyeing this radio for some time, but shied away from purchasing it due to a less-than-stellar review from a friend who bought it and returned it to Best Buy last year.  Given its cheap price, I thought I would give it a chance.  I’m glad I did.

This isn’t the first Insignia HD Radio I’ve used–I’ve owned the Continue reading

The effect of HD Radio interference on an analog FM signal

For the past few days, local 96.3 WHUR Washington, DC’s HD Radio signal, which airs on 96.1 and 96.5, has been off-air.  Usually, 96.1 and 96.5 are extremely difficult to DX since WHUR’s digital sidebands are strong at my Northern Virginia home.  However, with WHUR-HD turned off, both of its adjacent frequencies were open to distant reception like they were prior to 2006 when HD Radio debuted on WHUR.  At 8:50 PM February 8, WHUR’s IBOC sidebands resumed its broadcast.

The above chart shows a waveform of 96.5 FM from 8:49-8:50 PM February 8.  In the beginning, you can see a fairly strong analog signal from 96.5 WKLR Ft. Lee, VA, 92 miles away.  At the 0:05:00 mark, WKLR’s signal decreases as WHUR’s HD revs back up.  at 0:09:50, WHUR’s 96.5 digital sideband is at full-power, and WKLR abruptly disappears without a trace.

Listen to the corresponding audio file to the graphic above.

Translator update: FM dial is worse in Northern Virginia

transistor-radioThree years ago, I wrote about the rising amount of FM translators that have popped up in the Northern Virginia suburbs of Washington, DC and its effect on FM DXing.  I am updating this article as the local radio landscape has greatly changed since my original 2013 article.

FM translators are low power rebroadcasts of either a full service FM or AM signal.  Or, they can be a relay of an HD Radio subchannel of a nearby signal.  LPFMs, or low-powered radio stations, on the other hand, can originate their own programming and often operate as a community radio station, complete with live and local content.

For the most part, the radio dial in Northern Virginia is much worse than it was in 2013 due to the existence of these signals.  Many of my good, quiet DXing frequencies are gone, replaced instead by a repeater of a signal that I can already get strong elsewhere on Continue reading

Mini Review of the Sony XDR-S10HDiP Radio


Sony XDR-S10HDiP radio

I added a Sony XDR-S10HDiP radio to my shack on April 27.  The radio, which is no longer in production and was purchased used off of eBay, is identical in terms of performance to the Sony XDR-F1HD radio.

This radio will, for the most part, serve as my new go-to radio for dial scanning, since it has built-in speakers.  My other two main radios, the Sony XDR-F1HD and the Denon TU-1500RD, have their audio outputs connected to my computer.  Since the S10 has speakers, I can now easily check reception conditions without Continue reading

Norway Will Soon Shut Down Its Analog FM Stations. Could the United States Do The Same?

Credit: stock.xchng

Credit: stock.xchng

Imagine turning on your radio to listen to your favorite station to find nothing but static. You hit the ‘seek’ button and it dances from 88.1 to 107.9 multiple times without stopping. And yep, your antenna is connected and it is operating just fine. It’s surely a DXing nightmare–something that will soon be a reality for DXers living in Norway.

In less than two years, the country will cease all analog FM broadcasting. According to an article in The Hollywood Reporter, other European countries, including the United Kingdom, are also considering to end analog radio broadcasting by Continue reading

2014 FM E-Skip Year in Review

2014reviewAfter a summer of deadband radio dials and yawn-inducing static on every empty frequency, DXers may be wondering “where’s the skip?”

But that question will likely remain unanswered until mid-2015, as this year’s FM Es season ended without fanfare on July 31.

Sporadic E-Skip is a phenomenon which allows broadcast signals from up to 1500 miles away, on average, to be received in one location during the warmer months.  This review focuses on its effect on the FM band in Northern Virginia.

After an acceptable 2013 E-skip season, I had high hopes that this year would compare, in terms of performance, with the great seasons of 2006-2008.  Unfortunately, 2014 didn’t Continue reading

10 years later: A look back at the historic July 6, 2004 sporadic e-skip opening (audio and video)

Ten years ago today, DXing history was made with a colossal Sporadic E opening that blanketed most of the central and eastern portions of the United States.  This opening, which locally had a MUF of 195 MHz, came in with such a punch that it wiped out most local broadcasting signals here in the Northern Virginia/Washington, DC area.  Nothing like it has been seen since.

The skip rolled in shortly before 5 p.m., with FM and TV signals coming in concurrently from Alabama to Nebraska.   At 10:42 p.m. — almost six hours later — the opening was still going strong into FM.  It finally left the low TV band by 1 a.m.

I logged 49 new FM signals and 12 new TV signals that day.

A Google Maps plot of areas FM and TV signals were received from Woodbridge, VA (noted in the black circle) on 7/6/04.

Looking back, I know I was largely unprepared for the opening.  Although I had 5 years of DXing under my belt at the time, I had only experienced 3 garden-variety FM Es openings and a handful more fairly-weak TV-only openings.  Therefore, I had really no clue how Es affected the broadcast bands.  I sat in amazement watching station after station coming in on my Continue reading

An honest review of the RTL-SDR USB tuner

Local 103.5 WTOP and 104.1 WPRS tuned in via the RTL-SDR.  Note the HD Radio digital signals surrounding both signals.

Local 103.5 WTOP and 104.1 WPRS tuned in via the RTL-SDR in the HDSDR program. CLICK TO ENLARGE.

There have been a lot of recent buzz in the DXing community about software-defined radios, otherwise known as SDRs.  These radios, typically housed in a small USB thumbdrive-like units or small external hard drive-like enclosures without screens, can connect to your computer and can be used to DX multiple radio bands.

Recently Jim H., a DXer who lives in Stanardsville, VA, introduced me to the RTL-SDR USB dongle, which costs a whopping $9.95 on  I’ll admit, I was highly skeptical of this device’s capabilities due to its price and relatively unknown manufacturer.  Coming from powerhouse DXing radios such as the Sony XDR-F1HD and Denon TU-1500RD, I was expected to be let down.

Unfortunately, I was kind of let down, although the novelty of having a computer-based tuner did amaze me.


There was a slight learning curve with using the RTL-SDR dongle.  The device came with no software or instructions.  It also came with a Continue reading