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Kenwood TS-2000 Remote Mobile Controller RC-2000 Review by M0MCX

Layman level explanations of "seemingly" mysterious LF MF and HF propagation occurrences.

Review of Logikey K-5 Keyer

WR1B review of the Kenwood TS-570D on QST Jan 1997

This is a presentation used at OVARC on the LindenBlad antenna construction. The presentation cover several topics about this antenna, from the basic antenna design, to the guide on how to contruct a custom lindenblad antenna for the 2 meters band and and 70 centimenters band.

Eham users Kenwood TS-50 review

Eham Yaesu FT-1000 review

Hone your Morse code skills with this entry-level project. Article includes the full schematic of the CW Trainer, describes the sketch and how to operate the morse code trainer.

eham users review of the Kenwood TS-570D or TS-570G HF Transceivers

Contesting, CW, antennas and review on TK/OE5XVL DXpedition 1999 plus my GD/OE5OHO DXpedition in 1997.

Adam, VA7OJ/AB4OJ's IC-756Pro III User Review

Yaesu FT817 all band, all mode handheld transceiver article.

A simplified Guide to the FT8. Dxpedition mode. By Stefano IK2HKT – Rel. 2.0.0 - January 2019. This document explains how to configure WSJT to work on F/H mode DXPedtions, how to operate and make a call to a dxpedition calling CQ in FT8 Fox Mode.

eHam user reviews of the Yaesu FT-450 HF+6m t ransceiver

Want to operate on 40 meters but only have a space a little over 16X16 ? Try this antenna.

An Energy Analysis at an Impedance Discontinuity in an RF Transmission Line

Article from 73 Amateur Radio Today about experimenting on ferrite loops transmitting loop antennas for 80 and 160 meters bands.

Eham users review of this HF/VHF/UHF All Mode Transceiver.

KV5R review of the Icom 706MkIIG

The author who works successfully via EME on this band wants to describe his own yagi design and give some of hints for the construction. by Heinrich F. Reckemeyer, DJ9YW

Design and build a 6 meter 2-element Moxon antenna mostly from available aluminum tubing and angle stock.

The Mobile-Portable Reflector serves as a dedicated discussion platform for amateur radio operators interested in mobile and portable operations. It facilitates the exchange of information and answers questions specifically related to operating amateur radio from vehicles, temporary field locations, or while walking. The platform is not intended for general amateur radio discussions; its scope is strictly limited to mobile-portable topics. Subscribers can access prior postings to review historical conversations and solutions. The list is administered by _dick at k7vc.com_ and operates on Mailman version _2.1.12_. Subscription requires email confirmation and offers optional privacy password protection, with an option to receive daily batched emails.

Features, functions, a howto and opinions by Jason Buchanan - N1SU

Yaesu VX-6R eham.net users review

There are many designs for building preamps each with their own advantages and disvantages. In this PDF Article author reviews several different types.

Demonstrates the principles of effective HF multi-band antenna systems, emphasizing the use of non-resonant antennas, understanding line attenuation, and the proper application of transmatches and baluns. The resource challenges prevalent amateur radio myths, such as the necessity of a 1:1 SWR at the antenna feedpoint and the misconception that reflected power is lost or damages equipment. It cites authorities like Jim Fisk (Ham Radio Magazine) and M. Walter Maxwell (W2U, QST's "Another Look At Reflections" series) to support its arguments, providing historical context and technical explanations for these long-held beliefs. The article details how to combine non-resonant antennas with appropriate feedlines and matching devices to achieve broad-band operation. It compares coaxial cable losses with those of balanced open-wire lines, illustrating how ladder line can significantly reduce attenuation and handle higher impedances, enabling an 80-meter dipole to operate effectively across multiple HF bands. Practical guidance is offered on transmatch operation, explaining impedance matching principles and debunking the idea that tuners merely "fool" the transmitter. It also clarifies the function and potential misapplication of baluns, particularly transformer-type baluns, in the presence of high SWR.

eHam users reviews on the TS-480SAT

A free PDF from NASA about cubesat. Basic Concepts and Processes for First-Time CubeSat Developers. A great introduction document dedicated to Cubseat developers.

eHam reviews for the Ameritron AL-811 linear amplifier

TenTec Receiver RX 320 D Review by DF9CY

About Coax Traps, NC4FB examine the operation of coax traps through modeling.

Forum thread about the Yaesu VX-170 at trainorders.com

eham users reviews of the Kenwood TS-570S(G) series

A review of some portable antennas for SOTA operations, including linked dipoles, end-fed, verticals

The Buddipole Deluxe, a portable HF/VHF antenna system, receives a practical assessment from IW5EDI after a month of field use. The author, constrained by antenna restrictions, highlights the system's crucial role in enabling portable operations, even managing sporadic digital activity from a balcony. Direct comparisons to a fixed 3-band dipole reveal surprisingly comparable signal reports on 15, 17, and 20 meters, underscoring the Buddipole's effectiveness in real-world scenarios. Tuning the Buddipole proves straightforward on bands down to 20 meters, though the review notes significant challenges with SWR on lower bands like 40 meters, where achieving better than 3:1 SWR was problematic. Observations also include SWR variations with dipole rotation and mast height, suggesting environmental factors play a role. The overall manufacturing quality of the antenna and its accessories, including the tripod and carry bag, is deemed good, despite a minor issue with a pole connector. Looking ahead, the author plans to construct a homemade Buddipole version, possibly optimized for the 30-meter band, specifically for PSK31 operations from an apartment. This personal project reflects a common amateur radio practice of adapting commercial designs for specific needs, further extending the utility of portable antenna concepts.

Yaesu VX-8R eham users reviews

Eham users Yaesu VX 5R review

This is a schematic drawing of a project for the construction of a portable mast that can easily be made with PVC pipes.

Covers 10m 12m 15m 17m 20m 30m 40m and 100 KHz on 80m, & WARC Eham Reviews

Presents the VHFDX.EU web cluster, a specialized resource for VHF, UHF, and microwave DX spotting. It details the cluster's functionality, including real-time spot aggregation and a DXCluster Map interface for visualizing activity. The resource highlights its integration with the MMMonVHF backbone, ensuring a robust data flow for monitoring band openings and propagation events across higher frequencies. It also references reviews of the ON4KST and N0UK chat systems, which are frequently used in conjunction with VHF DX operations. The platform offers a mobile-optimized view for on-the-go access to DX spots, catering to portable and mobile operators. It further provides daily ES (Sporadic E) spot summaries, a critical feature for VHF operators tracking this specific propagation mode. The cluster serves as a central point for operators to share and receive information on rare grid squares, contest activity, and general band conditions above 50 MHz.

How to run an SDR Receiver on the Android Google Nexus 7 using SDR Touch App and an RTL-SDR dongle, review and costs by IW5EDI

Adding 17 meter band to Mosley TA-33M yagi antenna

The ARRL Contest Results Database serves as a centralized repository for official scores and detailed breakdowns from numerous ARRL-sanctioned operating events. This resource typically features comprehensive listings of participants, their submitted logs, and final standings across different categories, modes, and bands. It allows hams to review their performance, compare results with other operators, and analyze contest trends over time, providing valuable insights into competitive amateur radio. Historically, the database has showcased the efforts of thousands of contesters, from single-operator entries to multi-operator, multi-transmitter stations. While the current status indicates scores are not immediately available, the database's primary function is to archive and present the outcomes of events like the ARRL DX Contest, Sweepstakes, and Field Day. This historical data is crucial for tracking individual progress, identifying top performers, and understanding the competitive landscape within the amateur radio community.

eham review of the ICOM IC-756PRO

How to become an amateur radio ? by ON4SKY Review of general conditions to get licensed, examinations, regulation, CW, foreign calls, and more

This is a QST Article published in January 1982 by W1FB D. Demaw and HH Beverage and is a complete review of the original article published in 1922, which updates and reivew the beverage antenna theory and developlment, explaining the antenna design of transformers and gives accurate reports on antenna general performance.

Sommerkamp FT 250 Shortwave Transceiver (YAESU FT 200)

Getting started on RTTY contesting. A PDF by ED Muns, presented at CTU conterst university, about amateur radio RTTY Contesting

The TS-570 review by Arend , PA1ARE

A distributed capacity coaxial dipole antenna. The antenna is very broadbanded with a very flat swr on all band when setup of the antenna is done at the proper lenght and height.