R3 Radio Research
Content from Robert's Research & Radios LLC.
Crosman 2240 Installation Video
Crosman 362 Picatinny Rail Installation
Simultaneous 8-Band HF FT8 Ops
RTLSDR Mazda CX 5 TPMS
CAS-4A Linear Satellite Voice Ops with Eggbeater Antennas
FT4 Satellite Operations: My Setup + RS-44 Demo
Practical Use of the NanoVNA Time-Domain Reflectometer
Spectrum Analyzer vs. VNA for Hobbyists: Replacing NanoVNA v2 Above 3GHz
NanoVNA V2: Non-Ideal Cal Kit Specs on Professional VNAs
Crosman 1377 Barrel-Mounted Picatinny Rail for Red Dot Installation
Dual Polarization RF Sensing Systems for Weather Radar Applications
Burning Paper with Alpha Radiation Sources (Polonium-210)
Icom IC-9700: Automated ISS SSTV Reception
New ISS FM Voice Crossband Repeater (V/U Mode) - Icom-9700 & M2 Eggbeater Sat Pack
ISS SSTV Pass 1809 UTC 08-05-2020 (FN20gf)
NanoVNA V2: Female Calibration Kit vs. Port Extensions
CHU HF Time Broadcast 2200 UTC 2020-07-31 (FN20)
137MHz Cross Yagi (Part 3) - APT Results: 52dB SNR 47.5deg NOAA-19 2151 UTC 7-26-2020 (FN20ff)
137MHz Cross Yagi (Part 2) - Construction, Wiring, & Tuning Details
Satellite Eggbeater Antennas - DIY vs. M2 Antennas
Transit 5B-5 "Singing Satellite" Pass - 2243 UTC 7-5-2020 (FN20fe)
NOAA 9 Satellite Pass - 0843 UTC 7-3-2020 (FN20gf)
5.8GHz VSWR Measurements w/ Directional Coupler on a Budget
NOAA 15 & 18: APT Composite Construction with WXtoImg 2020-07-01 20:45 EDT (FN20gf)
NanoVNA V2: Measuring DIY Microstrip L-Band LNAs
NanoVNA V2: Measurements of an Active Device (SAWbird+ NOAA) with NanoVNA-QT
NanoVNA V2: RTL-SDR.com FM Bandstop Filter Measurements via NanoVNA-QT
AM Broadcast Radio vs. Lightning from El Derecho: PTRX-7300 Panadapter & Airspy HF+
Spyserver & Russian Military Shortwave: "The Squeaky Wheel", "The Pip", and "The Buzzer" (UVB-76)
WEFAX Grayscale Satellite Image Decoding from HF Relay - PTRX-7300 Panadapter & Airspy HF+