“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
Ailunce HS1 HF SDR HAM Transceiver
Ailunce HS1 Description: Spectrum Dynamic Waterfall Display Multiple Working Modes：Receive Mode, Transmit Mode, TUNE Mode, VFO Mode, SPLIT Mode DSP Di... Read more
2-way RX splitter
The splitter or combiner is a very useful device. It can provide equal voltages, equal current, or equal power to matched or unmatched loads. Like all... Read more
K44 CW Keyer & Reader w/Keyboard I/F by K1EL
The K44 is the Swiss Army knife of CW keyers. A CW keyboard interface, CW reader, iambic paddle keyer, backlit LCD display, and optically isolated key... Read more
Ailunce HS1 HF SDR HAM Transceiver
Ailunce HS1 Specification: Frequency Range: 0.5-30MHz Operating Mode – SSB(J3E)，CW，AM(RX Only), FM, FREE-DV TX Power: Max to 15w Product Dimensi... Read more
ELAD TM2 USB Tuning system (TMATE)
TM2 (the ultimate SDR control console) TM2 is the most awaited accessory by many users of SDR radio that can not or will not stay without usual knobs... Read more
STEMlab 122.88-16 SDR kit basic – REDPITAYA
REDPITAYA – Tailored for HF+50MHz SDR & other RF applications – Comes with two 16 bit ACDs 50 ohm inputs; 14 bit DACs 50 ohm outputs... Read more
MFJ-1936T GROUND ROD, W/CLAMP,+342T+WIRE BUNDLE
The MFJ-1936 is a HOT new product from MFJ for those who wish to be QUICK with their antenna set-ups! For those hams on-the-go to their next adventur... Read more
miltiFlex – FlexRadio
Maestro and PC at the same time Have your cake and eat it too. With multiFLEX you no longer need to choose between a Maestro and a PC. Now you can ope... Read more
DX Engineering Radio RF Ground Plane Kits
DX Engineering Radio RF Ground Plane Kits provide an effective method of reducing stray RF pickup by equipment and interconnecting cables. Used under... Read more
New Russian PA. 2000 Watts . Liquid cooling. Weighs only 14 pounds!
BURST 2000A HF power amplifier BURST-2000A 2200 W PEP output power (SSB and CW) All HF bands, including WARC bands and 6 meters Rated input pow... Read more
Review
![SWR Simplified [ ARRL PODCAST ]](https://qrznow.com/wp-content/uploads/2019/03/antenna-analyzer-mfj-225-swr-190x122.jpg)
SWR Simplified [ ARRL PODCAST ]
A discussion of SWR — Standing Wave Ratio — can be complicated, but it really doesn’t need to be. Read more
Yaesu FT-818 Review
“Hello Operators In todays video we review the Yaesu FT-818, in comparison to the Yaesu FT-817 which came before it. The video goes through the... Read more
Yaesu FT2DR Ham Radio Review. Is it better the second time around?
“Welcome to my review of the Yaesu FT2/DR. A dual band analog fusion APRS transceiver. The first time I used this radio it was a train wreck. Le... Read more
History of Digital Modes
“Here’s a talk I gave for a San Jose-area ham club via Zoom. This talk is recreated from the charts. Join me for a pleasant 45 minutes (or... Read more
Jim W6LG Talks About Grounding, Bonding, Earthing, Shielding and Protecting
What are grounding, bonding, earthing, shielding and protecting in the amateur radio station? This is Part 1 of a series of videos. Should you run a g... Read more
Meet the Raspberry Pi – “ARRL The Doctor is In” podcast. Listen…and learn!
Meet the Raspberry Pi” is the topic of the new (February 28) episode of the “ARRL The Doctor is In” podcast. Listen…and learn! Sponsored by DX... Read more
Yaesu FTM-100DR Wires-X Portable Digital Node + Firmware Update
“You can now use your Yaesu FTM-100DR, FTM-400DR and the F2DR as a Wires-X hotspot (PDN) or IP radio without buying the HRI-200 or another C4FM... Read more
![Individual causing malicious interference triggers parliament petition [CANADA]](https://qrznow.com/wp-content/uploads/2019/03/Electromagnetic-interference-audio-265x168.png)
