The International Amateur Radio Union Region 1 (IARU-R1) Monitoring System (IARUMS) newsletter reports a mysterious “foghorn” — a Chinese over-the-horizon (OTH) burst radar — is operating in Amateur Radio bands.
“We observed the mysterious foghorn on 7, 10, and 14 MHz,” the newsletter recounted. “This is a Chinese OTH radar, which is often jumping, and sounding like a foghorn.” The signal is frequency modulation on pulse (FMOP) with 66.66 sweeps-per-second bursts.
Other intruders reported by the IARUMS include a Russian frequency-shift- keying (FSK) signal from Kaliningrad on 7,193 kHz, and a Russian FSK signal on 7,193 kHz (50 baud, 200 Hz shift). German telecommunications authorities have filed another complaint.
The latest IARUMS newsletter also reports strong splatter from Radio France International (RFI) on 7,205 kHz down to 7,186 kHz. The French REF has informed RFI and French telecommunications authorities.
Intruders still reported and the subjects of further complaints from German authorities include Radio Hargeysa in Somaliland on 7,120.0 kHz; Radio Eritrea with Ethiopian interference on 7,175.0 kHz; Radio Taiwan and a Chinese jammer on 7,200.0 kHz, and a Radio Tajik harmonic (from 4765 kHz) on 14,295.0 kHz.
“The Coke Loop is a Small Magnetic Loop Antenna tuned by a trombone-style variable capacitor made with standard soda cans. In Brazil we... Read more
Why dipole antennas are a half wave long ? Read more
Stealth 9310 antenna is a budget version within 9300-series Automatic Tuning Whip HF Mobile Antennas family designed for military and professional app... Read more
The MB8 15-20 SF is a fullsize antenna for 14 MHz and 21 MHz. No traps or adapting systems where used to obtain fantastic performances and the best ba... Read more
Super vertical Vertical antenna for the low bands with differential reactance Configurations: 40/80 – 30/40/80 – 40/80/160... Read more
Solar Power Pack Plus 60-300 PORTABLE SOLAR POWER BATTERY/CHARGER Enjoy maximum power no matter what. The revolutionary EnergyBar 300 provides an un... Read more
LP-100A Digital Vector Wattmeter Everything you need for critical station monitoring, tuning and protection on one screen. No other meter has dual bar... Read more
Yaesu SP-10 and SP-20 SP-10 and SP-20 On December 8, 2016, Yaesu Radio Co., Ltd. announced the external speaker “SP-10” (12,000 yen tax-ex... Read more
ARD 300 Versatile and powerful digital voice decoder/demodulator for your trusted analog receiver! Decodes dPMR, NXDN and popular amateur digital vo... Read more
PandwaRF is a RF analysis tool with a sub-1 GHz wireless transceiver controlled by a smartphone or a PC. Its purpose is to capture, display & tran... Read more
Kenwood TS-2000 The Kenwood TS-2000 is an all band HF/VHF/UHF transceiver with exceptional features and versatility. Wide band Main HF reception inclu... Read more
Unboxing a TYT MD-380 DMR HT, and a lot more rambling (because we don’t do unboxings). I also talk about the BTech (BaoFeng) UV 5×3 tri-ban... Read more
DM-5R — BaoFeng’s FIRST DMR Digital Radio & The FIRST DUAL BAND DMR Digital Radio! Crystal Clear Sound Quality The BaoFeng DM-5R featu... Read more
Jim, W6LG looks at http://www.sherweng.com/table.html website with extensive detail about receiver performance. Read more
A tool to help ham radio, CB, and other radio users to create antennas of various types. Calculations available for dipole, vertical (1/8, 1/4, 3/8, 1... Read more
Rfinder Tom W3ZX, a visually impaired ham gives a great demo on Android using TalkBack for the visually impaired. See More: http://www.rfinder.net/blo... Read more
FlexRadio Systems announces the release of SmartSDR for iOS v1.0.4 is now available for download or update from the Apple App Store. This release con... Read more
This app answers the two basic questions facing radio amateurs:- Which band shall I use ? Where shall I point my beam ? It will be of interest to an... Read more
US Amateur Radio Band Plan A clean native app that’s sole purpose is to provide amateur radio operators a simple and easy to use f... Read more