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.
Three 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 →
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.
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 →
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.
Many people seemingly want to forget their day-to-day lives while on vacation.
While Americans will be trading a cubicle and daily commute for beach chairs and scuba diving gear during the upcoming vacation season, some DXers may be looking at the same trips as a way to propel their interest in the DXing hobby.
Quite often, a short trip to another area is all that is needed to provide a completely different RF environment conducive to some serious DXing.
When planning a trip as a DXer, a few things need to be put into consideration. If you are going on a trip with family members or children, then DXing will obviously not be a high priority Continue reading →
I have added a new radio to my shack, a RTL-SDR radio, which looks much like a USB flash drive. This radio can record up to 15 FM frequencies at once, among many other neat features. I am awaiting delivery of some related accessories before I write a full review of the device. Look for the review in the coming weeks.
In the meantime, enjoy a YouTube video of me tuning in several local stations with the device:
Although I have expressed distaste with HD Radio in the past, I thought it’d be interesting to predict what would happen to the DXing hobby if the unthinkable happened and the United States had a ‘digital radio transition,’ much like the country did in 2009 for digital television.
IBOC technology, which according to various reports broadcasts a digital radio station on the ‘sidebands,’ or adjacent frequencies of participating FM radio stations, ruined (or at least curtailed) the hobby for many. A station running IBOC on 95.5 FM would actually be broadcasting its analog signal on 95.5, while its digital signal would be broadcasted on 95.3 and 95.7 FM. An HD Radio would pick up either sideband, where available, and decode it on 95.5 FM, allowing the listener to enjoy a digital signal.
But what if U.S. radio broadcasters flipped the switch one day and only broadcasted digital, full-power HD Radio signals?
Obviously, the initial reaction to a full analog FM shutdown would be that Continue reading →
Disclaimer: This article is a rant and is only the opinion of the webmaster. I have nothing against any television station, cable or satellite company mentioned in this article. I am simply ranting about the disappearance of distant television stations over time and reminiscing about the past.
Although this isn’t exactly DX, I’ve noticed most of the television signals I receive via DX are not included on my local cable TV system.
Personally, I believe if a station can be regularly received via antenna, then it should be included on cable. This means a cable company should be legally allowed to carry all broadcast signals within, say, a 60 to 80-mile radius of any locale.
At my home 19 miles SW of Washington DC, on my local Comcast cable I get the following Washington, DC TV stations:
-WRC 4 Washington (NBC)
-WTTG 5 Washington (FOX)
-WJLA 7 Washington (ABC)
-WUSA 9 Washington (CBS)
-WETA 26 Washington (PBS)
-WHUT 32 Washington (PBS)
I also get a third out-of-market PBS affiliate, WMPT 22 Annapolis, MD, as well as the local Washington CW, MyTV, Telemundo, Univision and UniMas affiliates.