A simple guide shows how to construct and use an HF antenna analyser using a Windows PC, micro-controller, and DDS evaluation board.

Arduino nanoとAD9850 DDS Moduleを使ったアンテナアナライザで、 K6BEZ 開発を DG7EAO がTFTを使ってスタンドアーロンでも使える様に改造した物である。このTFT付きアナライザは、PCリンク、スタンドアーロンでも使える優れもので、電源は...

Antenna analyzers kind of feel like a one-trick pony to me. When I first strung up my Buckmaster 7-band OCF dipole. He replied with another option...

A Graphic Antenna Analyzer with 4.3" TFT Screen

Operating QRP Amateur Radio equipment.

Introducing the new high precision 600 MHz Antenna Analyzer for measurements of antennas, cables and other one port devices. The new VA5 is a portable,

If you are a hacker, you might consider ham radio operators as innovative. Most people, however, just see them as cheap. So it is no surprise that hams like [jmharvey] will build an antenna analyze…

Broadband Biconical ABF-900A antenna designed for compliance EMI and EMC testing according to FCC, EN, CISPR, FAA and Milstd requirements.

The RTL-SDR can be used as a super cheap real time air radar. Modern planes use something called an ADS-B (Automatic Dependent Surveillance-Broadcast) Mode-S transponder, which periodically broadcasts location and altitude information to air traffic controllers. The RTL-SDR can be used to listen to these ADS-B signals, which can then be used to create your very own home aircraft radar system. Compared to dedicated commercial ADS-B receivers which can go for between $200 - $1000, the $20 RTL-SDR is very attractive for the hobbyist in terms of price. However, note that the RTL-SDR probably shouldn't be used for ADS-B navigation in a real aircraft

VE2ZAZ - Combined 144MHz Low-Pass / 432 MHz Notch Filter

This Office & Desk Storage item is sold by BlackLodgeCreative. Ships from Seattle, WA. Listed on Feb 8, 2025

1 KW SSPA for 1.8-54 MHz

Here is a very simple continuously tunable RF Pre-amplifier for 40/20/18/15/10M bands. Front-end tuning is done with wide tuning range capacitor ( Varactor ) 1SV149. Monolithic amplifier ERA-3 from Mini-Circuits forms the wide band RF amplifier. The maximu

This antenna tuner ⁣includes​ a built-in standing waves meter and power meter, providing support for multiple radio stations and antennas. The frequency range

Amateur radio astronomer Y1PWE has uploaded a pdf document describing how he created a low cost hydrogen line telescope using an RTL-SDR dongle (links under heading 2. H-Line Receiver) . Hydrogen atoms randomly emit photons at a wavelength of 21cm (1420.4058 MHz). Normally a single hydrogen atom will rarely emit a photon, but since space and the galaxy is filled with many hydrogen atoms the average effect is an observable RF power spike at 1420.4058 MHz. By pointing a radio telescope at the night sky, a power spike indicating the hydrogen line can be observed in a frequency spectrum plot. Y1PWE created a

________________________________________________________ Un'antenna per chi ha problemi di spazio, un buon compromesso per andare in HF.

Upgraded NanoVNA 50kHz-6.3GHz Vector Network Analyzer, Seesii 4 inch Antenna Analyzer with MicroSD Slot, Support Data Storage,Measure S Parameters HF VHF UHF SWR Phase Delay Smith Chart: Amazon.com: Industrial & Scientific

Photo: EA5FUZ The X-Quad is an improved design of the well known multi element quads. They are especially designed for amateur radio, with the following

NOTE: Those who dont want to make a DIY antenna, can order Flightaware’s antenna from Amazon http://www.amazon.com/gp/product/B00WZL6WPO STARTER When DVB-T Dongle is purchased, a whip antenna is supplied with it. Ever…

SDR Transceiver MB1