“Join us for a webinar on Feb 16, 2017 at 9:00 PM EST Register now! –
https://attendee.gotowebinar.com/register/7735767269616129539
JC N4IS covers the concepts and decisions to build your own WF low band high
performance receive antenna. Topics include:
1- What is a Waller Flag
2- Horizontal or vertical poles.
3- Common node noise, and detuning towers or TX antennas
4- Phasing lines and transformers
5- Feed lines and chokes
6- Preamplifiers, filter and R/T switches
7- How to measure pattern (polar plot)
8- How to test and evaluate results.
73
Ken K4ZW”
Videos
Equipment
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
SDRplay announces the RSPdx
SDRplay Limited has announced the launch of a new Software Defined Radio product – the RSPdx. The RSPdx is a replacement for the highly successful RSP... Read more
Fairwaves launches new SDR products
Fairwaves is launching two new “X“- products this fall: XYNC – the ultimate low-cost massive MIMO SDR, with up to 32×32 transmit/receive channels XCOM... Read more
HF/6m linear amplifier 1200W with 5″ touch screen control heat pipes cooling system
his a ready power amplifier. You will need a power supply only! Water-cooled hermetically. You can turn the power amplifier. The water will not flow.... Read more
QRPGuys 40/30/20m DSB Digital Transceiver – $40
Have you ever wanted to try the new digital modes on a budget? The QRPGuys DSB Digital Transceiver is a low cost, multiband, DSB transceiver kit, curr... Read more
DR4020 Dual band Digital QRP radio
A simple QRP digital transceiver. — Fully assembled and tested– Perfect for outdoor digital radio contacts,such as FT8,FT4,JT65 etc. Band: 20... Read more
INRAD W1 Headset with Boom Mic.
THE INRAD W1Ham radio never sounded so good! Comfortable over-the-ear earpieces with large diaphragm high response speakers Full stereo reception to a... Read more
IC-PW2 Prototypes Shown at Tokyo Hamfair 2019
IC-PW2 ICOM Icom Inc. will be unveiling new product innovations at the Tokyo Hamfair, taking place in Ariake, Tokyo on August 31st – September 1... Read more
Review
MFJ-1924 Programmable Screwdriver Antenna Controller
Programmable Screwdriver Antenna Controller 10 Memories. . . Super Accurate. . . AutoPark . . . StallProtector. . . Super bright LEDs Tuning your mobi... Read more
The New SDRplay RSPdx receiver – First Impression: Excellent!
“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. Altho... Read more
The new Malahit-DSP: A portable all-in-one wideband SDR receiver
Technical Specifications 1 MHz to 1000 MHz. Bandwidth 160 kHz. Modulation types AM, WFM, NFM, LSB, USB. Powered by one Li-ion cell. Consumption up to... Read more
ICOM IC-7300 Review and Full Walk Through
New technology is changing the way receivers are being designed and the IC-7300 is an industry first as an RF, Direct Sampling System is being used in... Read more
The PackTenna Mini 9:1 Random Wire Antenna Antenna
http://www.packtenna.com Read more
