Many thanks to SWLing Post contributor, Mike Hansgen (K8RAT), for sharing the latest forecast from Tamitha Skov:
Video: Tamitha Skov forecasts “A Bright and Bumpy Ride”
2 Replies
Category Archives: Videos
Bill tunes to WWFD in AM HD
Many thanks to SWLing Post contributor, Bill Mead, who writes:
Thomas, I’m sending you a short clip from WWFD 820 kHz in Frederick, MD. It’s America’s only all-digital station, apparently. They are HD only with a relatively eclectic music format. I’m hearing them at my QTH in Harrisburg, PA, about 80 miles or so north of their transmitter which is 4.3 Kw daytime. I sort of doubt they’ll come in at night when they drop down to 430 watts, but who knows.
My experience with HD on MW is that it can be heard at pretty decent distances under ideal conditions but the slightest bit of interference, a lightning strike or someone switching on the lights for example, and it’ll lose the HD lock.
My HD receiver is a Sony XDR-F1HD. It’s well-known as an excellent FM DX machine. What’s not as well-publicized is that it’s a very decent MW receiver as well. All it needs is a good MW loop antenna directly connected to the AM ANT terminals on the back of the radio.
Click here to view on YouTube.
Excellent! Thanks for sharing, Bill. I’m passing by Frederick, MD in a couple of weeks and plan to tune to WWFD in both my car and with the Sangean HDR-14.
Aeronautical RDS: Ivan’s impressive collection of in-flight FM stations
Many thanks to SWLing Post contributor, Ivan Cholakov (NO2CW), who writes:
Last week I took an Eton Satellit with me on a flight from Tampa, Florida to Washington DC. The radio is very light, portable and packed with features. I have used an SDR radio before for inlight FM reception where I recorded audio, but this time I decided to only count stations with an RDS lock. With so many signals battling RDS is tricky to catch as every 10 seconds or so one station comes on top of another. The flight was just short of 2 hours and I divided my logs into three 30 minute segments. Not suprisingly looking into the technicalities I noticed RDS is commonly received from stations 50 -100 kW of power and tall towers.
Interestingly signals seem to be stronger a lower altitudes. My theory is that FM broadcast antennas heavily favor gain on the horizontal plane parallel to the terrain and send as little signal as possible out into space. I overlaid my logs onto three maps and also a video:
Click here to view on YouTube.
Impressive Ivan! I’m taking a flight later this month and might even try this with the FM radio built into my Moto G6 smart phone which also includes RDS (although I doubt reception can match that of the Satellit.
This is fascinating, Ivan! Thank you for sharing.
The story behind the recent Bouvet Island 3Y0Z DXpedition attempt
(Source: Southgate ARC)
Bob, K4UEE, narrated an interesting PowerPoint presentation at both the recent DX Forum at the Dayton HamVention and the W5DXCC/HamCom.
This presentation includes a summary of the 3Y0Z DXpedition with stunning pictures, their Vessel vetting process, what they learned, planned refund of remaining funds, another attempt, and some personal observations of K4UEE.