“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
EXTRAFLEX BURY /.400″ – Low loss Coax Cable
EXTRAFLEX BURY /.400″ [10,3 mm / 0,405 inches Cable]            WHY CHOOSE THIS CABLE: – The only 10,3mm coax that can be use bo... Read more
Ultra-compact transceiver Lab599 Discovery TX-500
The Lab599 Discovery covers 160-6 meters, all modes, with a maximum power output of 10 W. It comes with true desktop-radio features, like auto-notch,... Read more
Compact In-Line stereo DSP noise cancelling module -BHI
Compact In-Line stereo DSP noise cancelling module £179.95 Net Price (ex VAT) £ 149.96 Add to Cart Compact In-Line 0.270 kg Weight: A-COMPACT IN-LINE... Read more
![Commradio CR-1a Receiver [ Video ]](https://qrznow.com/wp-content/uploads/2019/06/514572dc3c9d4dc202a2b97334170b1e-190x122.jpeg)
![1A2R – connect two radios to one amplifier [ 4O3A ]](https://qrznow.com/wp-content/uploads/2019/06/65012394_2166865690271472_5313530966478684160_n-190x122.jpg)
1A2R – connect two radios to one amplifier [ 4O3A ]
A2R is a switch with the capability to share one amplifier between two radios. If you have a Solid State amplifier with fast band switching, it can up... Read more
RM Italy BLA-600 Review with Martin Lynch
The BLA 600 is a wideband compact, fully automatic 500W wideband linear amplifier for the HF bands and 6m, from 1.8 to 54 MHz. Totally ideal for runni... Read more
MRF101AN: 100 W CW over 1.8-250 MHz, 50 V Wideband RF Power LDMOS Transistor
These devices, MRF101AN and MRF101BN, are designed for use in HF and VHF communications, industrial, scientific and medical (ISM) and broadcast and ae... Read more
OMEGA- Portable radio
Frequency coverage (MHz) Rx 0.100 – 72.000 Tx 1.800-2.0007.000-7.200 18.068-18.168 28.000-30.000 3.500-3.80010.100-10.150 21.000-21.450 50.000-52.000... Read more
SunSDR2 DX – New 100 Watt SDR This Fall!
Exiting news from Expert Electronics! The introduction of the brand new SunSDR2 DX being planned for this fall. At Hamradio Friedrichshafen this weeke... Read more
New Elad Duo-X
Elad Duo-X Booth A1-552 at Friedrichshafen…. come see the new Duo-X, this is the prototype, 120w or 220w 4 receivers, 10.2in touchscreen... Read more
Review
3. LDMOS HF AMPLIFIER 100W INPUT 2400W OUTPUT BLF188XR 2 PCS 1.8-54 MHZ
LDMOS HF amplifier 90W input 2400W CW SSB output 1.8-54 MHz This a ready power amplifier. You will need a case and power supply only! Water-cooled h... Read more
2 Meter Band Explorations
“This band-exploration video looks at the amateur 2 meter band. We walk through the band. I talk about frequency coordination and band plans. I... Read more
Anytone D878UV+ Handheld Radio
Anytone D878UV Read more
IC-9700 Test Report by Adam VA7OJ/AB4OJ
Source:http://www.ab4oj.com/ Read more
Selecting Coaxial Cable
There are many types of cable for many applications. Which type do you need?  Read more
![Available Operating Modes to Us New Hams [ PODCAST ]](https://qrznow.com/wp-content/uploads/2019/06/image_1_hires-1-190x122.jpg)
![Introducing the new SunSDR2 DX transceiver [ VIDEO ] Friesrichshafen](https://qrznow.com/wp-content/uploads/2019/06/SUNSDR-1-190x122.jpg)
Introducing the new SunSDR2 DX transceiver [ VIDEO ] Friesrichshafen
SunSDR2 DX Improvements and New Features 100 watt transmit power on HF bands New ATU connector for future antenna tuner option High pass filter for VH... Read more
