“It occurred to me that my Garrett metal detector is a signal source at 13.6 KHz, so I decided to test to see if the Airspy hF+ Discovery is able to receive down that low. (And find out if the metal detector is using a modulated signal.)”
Antenna
3D Print – 3 element 2m (145 MHz) Ultra Portable yagi
3D Print – 3 element 2m (145 MHz) Ultra Portable yagi by OK1CDJ Description Tape measurement yagi. Weight only 170 g. The longest part is 530 mm... Read more
Camouflaged Ham Radio Antenna
Model Frequency (MHz) Gain (dBi) Length Feedline VT-14 144-148 2.6 36 in. 3 ft. RG-58 VT-22 222-225 2.6 25 in. 3 ft. RG-58 VT-44 440-450 2.6 16... Read more
AIM 4170D Antenna / Lab RF Analyzer
The AIM 4170D antenna analyzer measures the complex impedance (magnitude and phase) at each frequency of interest in the range of 0.1 to 180 MH... Read more
Chameleon CHA-RXL Stealth Receive Loop Antenna
Chameleon is releasing a new receive only loop, the CHA-RXL. Lets get it on the roof, test it out and talk about why receive loops can be pretty aweso... Read more
DIAMOND WD 330S a T2FD Short Antenna 2 – 30MHz
Peter Waters G3OJV, from Waters & Stanton, demonstrates the DIAMOND short dipole antenna. At just 10m long it is an attractive proposition for ham... Read more
VHF
The First Thing To Upgrade On Your Handheld Ham Radio
It’s true that the best thing to upgrade on your ham radio handheld is its antenna. However, there is something you should do before making that anten... Read more
Unboxing the TYT TH9800 with 220MHz
TYT TH9800 Take a look at the new version of the TH9800 which incorporates the 220MHz band. Read more
Tytera (TYT) MD-380 UHF 400-480MHZ Digital Radio (DMR)
TYT MD-380 UHF 400-480MHZ Digital Radio(DMR) ■Remote kill/stun/activate ■Priority Scan ■Voice Prompt ■Complying with digital protocol ETSI TS10... Read more
Kenwood D-STAR – Tribander 144/220/440 MHz
Kenwood D-STAR Built-in high-performance GPS unit Transflective color TFT display Weatherproof toughness meeting IP54/55 standards Wide-band and multi... Read more
Having Fun With VHF – Bob Witte K0NR
This is a video of my presentation for the QSO Today Virtual Ham Expo. Read more
Equipment
Integra Unveils Novel 100V RF GaN-on-SiC Technology with Superior Performance
Modernization of multi-kilowatt RF communication and data transmission systems is pushing the requirements of what traditional vacuum electron devices... Read more
MRFX1K80H: 1800 W CW over 1.8-400 MHz, 65 V Wideband RF Power LDMOS Transistor
The MRFX1K80H is the first device based on NXP’s new 65 V LDMOS technology that focuses on ease of use. This high ruggedness transistor is desig... Read more
Introducing . . . New MFJ CWMorse Micro Telegraph Keys
MFJ-566M, $29,95 Red/Black Micro Morse Code Key with aluminum base. Liquid smooth and shielded steel ball bearings. Hardened steel pin rotation and st... Read more
ATEX PTT Solution Available for ICOM IC-F3202DEX and F4202DEX series of ATEX radios
Icom are now able to provide a high quality ATEX approved PTT Headset that is approved to work with the IC-F3202DEX and F4202DEX series of ATEX radios... Read more
DX Engineering RT4500HD Heavy Duty Rotator
SPECIAL ANNOUNCEMENT: We are introducing the DX Engineering RT4500HD Heavy Duty Rotator pic.twitter.com/xxjFk0QW4D — DX Engineering (@DXEngineering) M... Read more
Review
Solar Power for Ham Radio, a presentation – Ham Radio Q&A
This is an educational presentation I gave on setting up a solar system for use with amateur radio. It goes into the components necessary and talks on... Read more
RigPi RigPi MFJ-1234 Station Server, Remote Ham Radio @Hamvention
RigPi MFJ-1234 “Our first look at the brand new RigPI Remote station server called the MFJ-1234. This little beauty allows you to connect and co... Read more
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Setting up a Buddipole Deluxe Kit in the Field
DESCRIPTION The Buddipole™ Deluxe Package includes everything you need for setting up an efficient portable antenna solution anywhere in the world in... Read more
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