Attilio Massardo

Radioamatore dal 2007 , appassionato di radioelettronica antenne, iscritto Naval A.R.M.I. 739.

[𝟑𝟎𝐒𝐕𝟎𝟖𝟔 Alfonso @30SV086]

Yaesu FT-847
All Mode Transceiver

[ElectronicsNotes by Ian Poole @ElecNotes]

Crafting your own sky wire is one of the most rewarding milestones in amateur radio.

Building an HF dipole is budget-friendly and gives you hands-on insight into how your signal actually propagates.

Based on the fundamental guide from Electronics Notes, here is how to assemble a high-performing half-wave dipole for 80m down to 10m. 🧵
👇

#HamRadio #AmateurRadio #AntennaDIY #hamr #antennas #electronicsnotes

[ElectronicsNotes by Ian Poole @ElecNotes]

When talking about reflected power in a feed line which is correct SWR or VSWR?

As both a professional engineer and a radio amateur, I hear them used interchangeably all the time on the air and in the lab.

But is one actually more correct than the other?

To answer that, we first have to look at what’s really happening inside your coax when power gets reflected. Why does a mismatched load cause energy to bounce back in the first place? 🧵👇

#SWR #VSWR #RFdesign #antennas #RFdesign #amateurradio #hamradio #hamr

[The DXZone Ham Radio @dxzone]

📷 The X-026 has a name: IC-7110
Revealed minutes ago at Tokyo Ham Fair 2026.
First photos + everything we know 📷
https://t.co/JK5dEBGLjV
Worth the four-month wait? 📷
#IC7110 #7110 #HamRadio #Icom #X026 #TokyoHamFair2026 #DXZone

[Icom America Inc @IcomAmericaInc]

IT’S HERE!!!

Live from Tokyo Ham Fair 2026 — meet the ALL-NEW ICOM IC-7110!

A new chapter in amateur radio has arrived, and we’re excited to finally show you what we’ve been working on.

#IC7110 #TokyoHamFair #HamRadio #AmateurRadio #NewProduct #Tokyo #madeinjapan

[RayPCB @RaymingTech]

A crystal oscillator uses a piezoelectric crystal to generate a highly stable frequency signal. When an electrical signal is applied, the crystal vibrates at its natural resonant frequency and produces a precise oscillation.

In a microcontroller circuit, the crystal resonator (XT) works with two load capacitors, C₁ and C₂, to support stable oscillation. The MCU uses this clock signal to control the timing of its operations. The load capacitance depends on C₁, C₂, and stray capacitance.

Crystal oscillators are widely used in microcontrollers, digital clocks, communication systems, computers, watches, and other electronic devices where accurate timing is important.

[ElectronicsNotes by Ian Poole @ElecNotes]

VCXOs: What are they & where can these oscillators be used in circuit designs.

A Voltage Controlled Crystal Oscillator (VCXO) combines the high stability of a quartz crystal with the flexibility of a voltage-controlled adjustment. It allows you to "pull" or trim the frequency by a small amount using an external control voltage.

#Electronics #engineering #electroniccomponents #crystaloscillators #vcxo #voltagecontrolledcrystaloscillator #electronicsnotes #RFDesign #Oscillators

[The DXZone Ham Radio @dxzone]

Antenna Systems and Theory For The Non-Technical Ham
https://t.co/hqz4RLXjeS

[The DXZone Ham Radio @dxzone]

BALUNS - Technical Presentation by VE2AZX
https://t.co/q9Mnhily9B

[The DXZone Ham Radio @dxzone]

VHF/UHF Yagi Construction: Isolated Element Method
https://t.co/LcecZup1TL

[RayPCB @RaymingTech]

𝗖𝗿𝘆𝘀𝘁𝗮𝗹 𝗢𝘀𝗰𝗶𝗹𝗹𝗮𝘁𝗼𝗿 – 𝗧𝗵𝗲 𝗛𝗲𝗮𝗿𝘁𝗯𝗲𝗮𝘁 𝗼𝗳 𝗠𝗶𝗰𝗿𝗼𝗰𝗼𝗻𝘁𝗿𝗼𝗹𝗹𝗲𝗿𝘀 ⏱️⚡

[The DXZone Ham Radio @dxzone]

Construction of a 5/8-Wavelength Vertical Antenna for 2 Meters
https://t.co/75sHLa0m8V

[The DXZone Ham Radio @dxzone]

Dual-Band VHF UHF J-Pole Antenna Construction
https://t.co/2ekqrS85th

[The DXZone Ham Radio @dxzone]

Build a Copper Cactus Dual-Band Super J-Pole Antenna
https://t.co/E7bM8gW8NF

[PY6CJ - João Grisi @py6cj]

1.3 GHz VCO with Emitter Noise Feedback

Post of:
https://t.co/9ySawdCCTg

#hamradio #amateurradio #hamradiocommuity #py6cj #hamradiohomemade

[ElectronicsNotes by Ian Poole @ElecNotes]

What makes the Superheterodyne (or "Superhet") receiver the gold standard?

Developed by Edwin Armstrong in 1918, this architecture solved the massive stability and selectivity problems of early radio.

By converting incoming RF signals into a fixed "Intermediate Frequency" (IF), it created a stable, reliable way to tune stations.

It’s the foundational technology that has underpinned almost every radio receiver—from broadcast AM/FM to modern high-end microwave communication systems—for over a century. 🧵
(1/5)

#superhet #superheterodyne #radio #amateurradio #hamradio #hamr

[The DXZone Ham Radio @dxzone]

Working via Satellite in 2026: LEO and GEO Operations
https://t.co/ojo2nDdFiT

[The DXZone Ham Radio @dxzone]

10m Vertical Antenna for Small Footprint
https://t.co/RkT2F51j52

[The DXZone Ham Radio @dxzone]

Building and Testing 50 MHz Traps for Antenna Experiments
https://t.co/tB9zKr0JTS