Xiegu G90 Go Box/Solar Generator Build Tutorial
Antenna
The Mark MKII 3 band (10, 15, 20m)
MK II 2 ELEMENT COMPLETE 3 band (10, 15, 20m) Antenna – 5 band (12m, 17m) 8- DELUXE FIBERGLASS QUAD ARMS – 13FT. 2- CUBEX QUAD SPIDERS-ONE... Read more
SteppIR UrbanBeam, “Step by Step” Assembly and Installation
SteppIR Antenna This video shows the SteppIR UrbanBeam’s step-by-step assembly and installation in the tower, several hours in minutes. The Urba... Read more
Radio interference from Solar Panels – RFI
The radio amateurs have known for a long time that PV installations (solar panels) could interfere. For more than 10 years, the VERON has been warning... Read more
Antenna Circular Polarization
“Space communication has forced the use of Circular polarization. The fundamental advantage of circular polarization is that all reflections cha... Read more
20M LOADED DIPOLE – HALF A YAGI?
Here we take a look at building a short, loaded dipole for 20 Meters, 14 MHz. In fact, this is going to be half of a 2 element yagi for the 20M band. Read more
Review
How To Build An SWR / Relative Power Bridge – Part 1
I start building an SWR / Relative Power Bridge. This is a simple circuit. I show you how to wind the toroid coils. The circuit is based on Don Cantre... Read more
ZUMSpot RPi PiStar Hotspot Review
The ZUMspot RPi is an advanced radio module board. Paired with a Raspberry Pi and the MMDVM software becomes a small and efficient multi-mode digital... Read more
Equipment
Vibroplex Code Warrior Jr
Vibroplex The Code Warrior Keys are uniquely serial numbered and dated. With a base measuring only 2 1/2″ by 3″, this small iambic model... Read more
Yaesu Rotor Controller Az. Insert
CQmaps – Professional Maps for Amateur Radio, is extremely happy to offer the Amateur Radio community a truly helpful station aid for your Yaesu... Read more
Ten- Tec 507 Patriot – Open Source Arduino-based SSB/CW QRP Transceiver
The 507 Patriot utilizes a chipKIT Uno32 prototyping board which give users access to an Arduino-based programming environment. With its 32-bit... Read more
HF Linear 2KW HF2015DX – Chinese by BG5EFD
RF Linear amplifier coverd 1.8-30MHz WARC amateur bands , using Chinese FU728F ceramic tetrodes working at Class AB1 driving power:5-50W output:20... Read more
144 MHz filter stops interference
Designed and manufactured by SOTABEAMS, this neat bandpass filter is for use with handies (HT) in areas with multiple transmitters. In such areas, man... Read more
News
The K7RA Solar Update
Tad Cook, K7RA, Seattle, reports: Solar activity slowed this week, with the average daily sunspot number declining from 48.9 last week to 33.9 this we... Read more
8-Meter Experimental Station on the Air from the US
WL2XUP is an FCC Part 5 Experimental station operated by Lin Holcomb, NI4Y, in Georgia. It’s licensed to operate with up to 400 W effective radiated p... Read more
Quirky APRS, HG-UV98 Lanch NLH Ham Radio Handheld Review
“Chinese radios have come a long way, many have impressive feature lists, but those features seem to be stuck behind programming or poorly imple... Read more
Product Discontinuation: IC-7851 HF All Band Transceiver
“We are sorry to announce that Icom has discontinued the IC-7851 HF All Band Transceiver. Since its launch six years ago, the IC-7851 has been I... Read more
ISS SSTV Aug 6-7 145.800 MHz FM
Russian cosmonauts on the International Space Station (ISS) are planning to transmit Slow Scan TV images on 145.800 MHz FM using the SSTV mode PD-120.... Read more
