Top Amateur Radio Websites – Issue 2628

This week, we’ve gathered some practical insights for the workbench and the field. We’re looking at a few antenna projects, including a clever portable multiband design that repurposes common gear. There’s also a detailed build log for a popular autotuner, something many of us consider for flexible antenna matching. For those running an Icom IC-7300, we found a couple of interesting modifications: one addresses a common fan noise complaint, and another explores a custom microphone setup for improved audio. We also have a solid primer on ferrites and coils, revisiting some fundamental rules of thumb that are always useful for RF experimentation, especially below 30 MHz. Finally, a quick look at a retailer in South Africa, offering a glimpse into gear availability in other regions.

DIY Simple Low Profile Multiband POTA Antenna

This resource provides a comprehensive guide for constructing a simple, low-profile multiband antenna suitable for POTA activations. It details how to adapt a photographer's tripod to serve as a radiating element, offering a practical solution for portable operations.

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Building an ATU-100 (N7DDC) Autotuner

This detailed photographic build log walks through the assembly of the N7DDC ATU-100 automatic antenna tuner. It covers all steps from winding toroids to modifying the EEPROM for QRP operation, benefiting those looking to build their own tuner.

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Icom IC-7300 Noisy Fan Mod

This guide outlines a modification for the Icom IC-7300 transceiver to reduce fan noise. It details the process of replacing the stock cooling fan with a quieter Noctua NF-A8 PWM fan, improving the operating experience for IC-7300 owners.

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Ferrites and Coils: Rules of Thumb for Ham Radio Projects

This article offers practical rules of thumb for selecting and utilizing ferrites and coils in various amateur radio projects. It focuses on applications up to 30MHz, providing valuable guidance for experimenters working with RF circuits.

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Dual Insert Microphone for Icom IC-7300 Transceiver

This DIY project describes building a dual-insert microphone specifically for the Icom IC-7300 transceiver. It combines a Besson BZ2400 M4 rocking armature with an electret condenser to achieve optimized audio performance for the rig.

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RadioSmart Solutions

RadioSmart Solutions is a South African retailer specializing in amateur radio and mobile communication equipment. They offer a range of products, including Anytone DMR and analog transceivers, serving the local ham community.

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That wraps up this week’s selection of resources. We hope these projects and insights spark some ideas for your next build or operating session. Be sure to follow us next week for more interesting finds, and feel free to share your thoughts or comments on our social channels.