Jim makes and then shows his tunable half wavelength dipole antenna. Using an antenna analyzer
Jim finds the resonant frequency and the lowest SWR 
Review
KM4IPF Shows the Template for the HF Go Box that Will be Used for Our Dry Tortugas DXpedition
“KM4IPF, AE4FH, and WX4TV are planning a mini DXpedition to the Dry Tortugas later this year and we are building an HF go box to hold the Yaesu... Read more
![Elecraft Announce K4 SDR at Hamvention 2019 [ VIDEO ]](https://qrznow.com/wp-content/uploads/2019/05/60357783_1261784310641760_5710649015670931456_n-190x122.png)
Yaesu FT-991 compared with the FT-817ND – HF SSB and CW
FT-817ND vs FT-991 using the same Antenna – HyEndFed 5 Band. To give the FT-817ND a fighting chance, I have added the CW filter and I have conne... Read more
Review of SDRplay SDRduo Two-Tuner SDR Radio
“SDRplay has done it again with an outstanding and technically sophisticated software-defined radio that even at $280 is still a bargain. The vi... Read more
Building a Motorhome Ham Station From Scratch by K6UDA
In the midst of packing for my DXpedition / SCUBA dive trip to San Salvador Island, I felt the need to start a series on designing and building a port... Read more
Heil HS2 Hand PTT switch for 2 radios with MFJ-1263
“In this video you will find information about the Heil HS2 handheld PTT switch that I use with my 2 Kenwood radios (TS-2000 and TS-990), thanks... Read more
Equipment
MK-4 Heavy Duty – 25′ Maximum Height Fiberglass Masts
The MK-4 Series of masts are, by far, our most portable masts for many reasons. The masts are light weight and short enough, when fully collapsed, to... Read more
![Adding an Amplifier to your Station [ PodCast ] – ARRL The Doctor is In](https://qrznow.com/wp-content/uploads/2018/03/maxresdefault-3-190x122.jpg)
Adding an Amplifier to your Station [ PodCast ] – ARRL The Doctor is In
Adding an amp is not as straightforward as it sounds. There is much to consider, including AC power. Read more
Icom IC 718 – HF Transceiver
Icom IC 718 – HF Transceiver THE ORIGIN OF THE HF TRANSCEIVER Simple operation The IC-718 is equipped with a minimum number of buttons and cont... Read more
ALT-512 QRP TRANSCEIVER
ALL-MODE QRP TRANSCEIVER for HF + 6m +4m (12 Bands + General Coverage RX) MADE IN EUROPE (Coming Soon*) Aerial-51’s new A... Read more
uBITX – A Compact HF Transceiver
uBITX – A Compact HF Transceiver 10 watts pep on lower HF bands, dips to 5 watts on 28 MHz SSB and CW Simple to build and align Minimal controls... Read more
Compact Power Supply for Elecraft Radios
Description The SS-30DV is designed to supply 25 Amps continuous (up to 5 minutes) and 30 Amps surge at 14.1 VDC. It is the perfect companion s... Read more
VHF
New ! ICOM A120 VHF Air Band Transceiver
VHF Air Band Mobile Radio Icom’s A120 air band mobile introduces two new features: Active Noise Cancelling (ANC) and Bluetooth® capabilities. The newl... Read more
F-600A Dual mode FDMA DPMR analog digital walkie talkie with GPS in-bulit
F-600A Quick Details Place of Origin: Fujian, China (Mainland) Brand Name: Creation Walkie Talkie Model Number: F-600A Digital Walkie Talkie Type: Han... Read more
Dynascan P-72
Dynascan P-72 Double band 20W equipment, with a very small size. Double simultaneous reception. Microphone connection or micro-speaker on the side. ... Read more
Kenwood TMZ-D504 UHF
High power of the transmitted output 5W Specified low-power automotive operation was difficult in the transceiver, and effective in calling area expan... Read more
Icom IC-2730A vs IC-2720
Ray Novak and George Thomas compare the IC-2730A to it’s predecessor, the IC-2720. Read more
Baofeng For Dummies: UV5R+ HAM Radio Tutorial
Baofeng Watch in HD! Today I show you how I use my HAM radios to listen in to local police, fire and EMS. Also handy for receiving weather radio and t... Read more
Digital Modes
LoTW Now Accepting FT4 Contact
The latest TQSL update (Config.xml version 11.8), released on May 22, includes FT4 as a submode of MFSK. It also adds AISAT-1 and PO-101 in the satell... Read more
ADIF 3.1.0 was approved today
Dave Bernstein reported this on the DXLabs support group today: ————————————... Read more
FT4 vs FT8 – A new mode, what’s the difference?
The FT4 Protocol for Digital Contesting by K1JT Read more
