“Today i have received the new SDR receiver from SDRplay, the RSPdx and was eager to turn it on and do some tests receiving on HF and VLF. Although at the moment my mini-whip antenna is not operational, I have connected some 20 meters wire as an antenna and start listening on VLF, LW, MW and HF… I have to say that SDRplay team did a good job with this SDR-receiver, putting better filters and redesigning front-end to improve dynamic range and enhance overall performance in relation to its predecessors RSP2 and RSP2pro. The new RSPdx is very good indeed. Especially on HF and below. The RSPdx has new features like HDR (High Dynamic range) mode for reception within selected bands below 2 MHz. HDR mode delivers improved intermodulation performance and less spurious responses for those challenging bands. In this video I am using: – RSPdx SDR receiver; – latest SDRuno v1.33; – Only one half of the dipole antenna for 80 m (20 meters wire, because the other half of the dipole was pulled off by the accident). The coaxial cable is 30 meters long”
News
SAQ, Sweden’s Alexanderson Alternator, Announces Scheduled Christmas Eve Transmission
SAQ, the call sign of the 1920s vintage Alexanderson transmitter in Grimeton, Sweden, is set to be on the air for its annual Christmas Eve transmissio... Read more
The January Edition of Digital QST is Now Available!
The January issue of Digital QST is now available for viewing on your desktop or laptop. Click here to view the issue. It is also available for readin... Read more
ARRL Asks FCC to Dismiss Petition Seeking Declaratory Ruling on Encoded Message Rule
ARRL has asked the FCC to dismiss a Petition for Declaratory Ruling filed by New York University (NYU), that in ARRL’s view proposes a new interpretat... Read more
Dayton Hamvention Admission, Fees to Increase in 2020
Dayton Hamvention® is increasing the cost of admission and its booth fees. Hamvention General Chair Jack Gerbs, WB8SCT, announced this week that gener... Read more
Oldest Known US Ham Receives ARRL Centurion Award
The oldest known US radio amateur, Cliff Kayhart, W4KKP, received his ARRL Centurion Award plaque in November. The award recognizes hams who have achi... Read more
UN Headquarters’ 4U1UN has been Back on the Air
The United Nations Amateur Radio Club, 4U1UN, at UN Headquarters in New York has been on the air recently. Adrian Ciuperca, KO8SCA, recently was on si... Read more
VHF
50MHZ PREAMPLIFIER WITH FM NOTCH FILTER
A 50 – 54 MHz ( 6 meter ) HF preamplifier with innovative design. Input notch filter for FM frequency 88- 108 MHz. Noise figure of 0,5db. Perfec... Read more
WRC-19 Day-19: 50 MHz Approved!
WRC-19 has approved an allocation in the 50 MHz band for amateurs in Region 1 at its morning plenary in Sharm El-Sheikh, Egypt, on Thursday 21 Novembe... Read more
ICOM 2019 P25 CAP
What is P25? P25 is a standard for the manufacturing of interoperable digital two-way wireless communications products. Sometimes also known as Pr... Read more
ICOM IC-SAT100
Icom’s IC-SAT100 allows users around the world to communicate with a group of PTT radios at the push of a button. To do this, the IC-SAT100 utilizes I... Read more
New 18W High-power Baofeng UV9R-ERA Walkie Talkie
Specifications: Dual band two way radio with build-in 9500mAh li-ion battery power supply. 128 groups channels storage, with function of voice COMP CT... Read more
Antenna
90’ MAGNETIC LOOP T3FD TERMINATED FOLDED DIPOLE ANTENNA
T3FD TERMINATED FOLDED DIPOLE AMATEUR RADIO ANTENNA KIT DESIGNED TO WORK AT ONLY 35 FEET ELEVATION FLAT OR AS A SLOPER. BRAND NEW. THIS ANTENNA IS ASS... Read more
Center Loading the Wolf River Silver Bullet 1000
“Wold River Coils has a new accessory for Silver Bullet 500 & 1000 coils called the UAFI or You Asked For It kit. The UAFI is a pair of exte... Read more
![“Big Wire Antennas” [ ARRL The Doctor Will See You Now! ]](https://qrznow.com/wp-content/uploads/2019/11/Fan_verticals_780-265x168.gif)
“Big Wire Antennas” [ ARRL The Doctor Will See You Now! ]
“Big Wire Antennas” is the topic of the new (November 21) episode of the ARRL The Doctor is In podcast. Listen…and learn! Sponsored by DX Engine... Read more
5 element Long Boom 144MHz LFA-Q Super-Gainer Quad Style Yagi
Description A 5 element Long Boom (2.1m) LFA-Q (Super-rigid Quad-style) Super-Light Quad Style Yagi for 144 – 145MHz The LFA-Q Packs a bigger... Read more
5 Elements wire yagi for 80m
There were a lot of questions on wirebeam yagi on 80m. Here is a diagram. This is used on RL3A, K1LZ and similar on EW6W Source: Roman Levichev Read more
Equipment
ATEX PTT Solution Available for ICOM IC-F3202DEX and F4202DEX series of ATEX radios
Icom are now able to provide a high quality ATEX approved PTT Headset that is approved to work with the IC-F3202DEX and F4202DEX series of ATEX radios... Read more
RF-KIT Power Amplifiers RF2K-S
RF-KIT Power Amplifier RF2K-S – THE Solid State 1,500 watt linear amplifier DX Engineering exclusive! Both kit and assembled versions offer exac... Read more
3D printed desktop rack for KX3 / PX3
“Robert K5TD makes me wish I had a KX3. His own design of a 3D printed rack beautifully shows off the radio and panadapter and, from observation... Read more
RigExpert Stick 230 100kHz – 230MHz Analyzer
RigExpert Stick 230 Small. Handy. Powerful. The analyzer is designed for measuring SWR (standing wave ratio), return loss, as well as other parameters... Read more
Small QRP-GO-BOX powered by Raspberry Pi4, KX2 and TH-D74
Small multifunctional, digital, very compact amateur radio station for the radio operation at home, on the way or in the emergency radio. For the digi... Read more
