Search results
Query: home brew
Links: 417 | Categories: 5
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7N3WVM homebrew project of a 3 W output CW transceiver on 7 MHz band -
Homebrew a compact yagi antenna for 14 Mhz suitable for those with small plots based on a design by AB4GX -
This article explain how to homebrew and use an HF antenna analyzer by simply adapting a Windows PC, micro-controller and a DDS evaluation board by K6BEZ -
Building a 2 metre 144MHz VHF Yagi beam antenna, designed for portable use. -
There is not a personal design on this page, just I've transfered useful notes from PHILIPS RF Bipolar Transistors - Data HandBook about BLY89C VHF Power transistor, which is very popular among Amateur Radio homebrewers -
Centre fed half wave dipoles make great, simple and effective antennas for the HF bands. Sometimes however, the centre feed is not ideal. This great project will improve the overall antenna performance. -
A magnetic longwire unun with a T130-2 Iron Powder core by M0UKD -
VHF UHF diplexer by G8MNY -
A homebrew Magmount for 2m antenna -
Collection of telegraph keys homebrew antenna projects links to radio software -
Balun case construction, tipically to host toroid cores. Size of case depends on power to handle. By DL5DBM -
A project for a SDR receiver by Juan Domenech Fernandez -
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An off centre fed dipole, with 10 feet of vertical radiator. It needs no tuner on 40m, 20m and 10m by M0UKD -
Amateur Radio Projects & Kits for homebrewers, includes DDS,sound card interface,programmers, hamcom, frequency counter, RF Power Meter, modems and more. -
Homebrewed handheld RF powermeters for various sensors by DL5NEG -
Packet with Linux, homebrew, Talco mods. in French -
Tips to homebrew your own HF traps using aluminium wire and doorknob capacitor -
The resource presents a detailed schematic for constructing a dual-band vertical antenna, specifically designed for operation on the 2-meter and 70-centimeter amateur radio bands. It illustrates the physical layout, critical dimensions, and component placement necessary for successful replication. Key elements such as the radiating elements, phasing sections, and feed point are clearly depicted, providing a visual guide for radio amateurs undertaking a homebrew antenna project. The diagram specifies the lengths for the VHF and UHF sections, indicating how these elements are integrated to achieve dual-band functionality from a single coaxial feedline. It also implies the use of common materials readily available to most experimenters, focusing on simplicity and effectiveness in its design. The visual format of a GIF image ensures direct access to the construction details without requiring extensive textual interpretation. This schematic serves as a practical reference for hams interested in building a compact, efficient vertical antenna for local and regional FM communications, offering a proven design for immediate implementation. -
A resurrection of some homebrew projects from our vintage years and the NorCal-sponsored project series in tribute to Doug DeMaw, W1FB -
A homebrewed antenna for 2m handheld radios by TB1BIG -
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All about homebrew, antennas, accessories for shack, digital tecniques and more.. -
A complete guide to magnetic loop antenna construction, with analysis of multi-turn and single-turn magneti loops, and and insight on choosing the optimal capacitor, or homebrewing your own butterfly capacitor -
Presents a QRP AM/CW transmitter project specifically designed for the 10-meter band, utilizing a crystal oscillator and a collector-modulated AM oscillator. The design employs a 2N2219(A) transistor in a Colpitts configuration, generating 100 to 350 mW of RF output power depending on the 9-18 Volt supply voltage and modulation depth. Frequency stability is maintained by a 28 MHz crystal, with fine-tuning possible via a Ct1 trimmer capacitor for approximately 1 kHz adjustment. The resource details the RF oscillator stage, implemented with a 2N2219 NPN transistor, emphasizing frequency stability and low power dissipation. It also covers the amplitude modulation stage, managed by a 2N2905 PNP transistor, which impresses audio information onto the carrier. Selective components (C3, C4, C7, C5) enhance voice frequencies within a +/- 5 kHz bandwidth, and modulation depth is controlled by R2 and R3. The project includes a 3-element L-type narrow bandpass filter (Ct3, L3, C10) to suppress harmonics and ensure a clean output signal. The project provides a complete schematic diagram, a comprehensive parts list including specific capacitor, resistor, and inductor values, and construction notes for the coils (L1, L2, L3). It also offers practical advice on enclosure requirements, suggesting an all-metal case or a PVC box with graphite paint for RF shielding. Operational parameters such as current draw (27mA@9V to 45mA@16V) and input impedance (50 Ohms) are specified, alongside guidance on antenna matching and the importance of a valid amateur radio license for 10-meter band operation. -
5W portable solar charger project that uses both your ham and carpentry homebrewing skills. -
Homebrew-page of PG1N with lots of homebrew links -
A web site dedicated to hex beam homebrewing. The hexagonal beam has become a wildly popular antenna. It is a directional antenna that provides great performance and does not require a full scale, expensive tower. -
What is an EWE Antenna, comparisons, performance and homebrew plan -
Operating on the 2200m band (135.7-137.8 kHz) often presents challenges for amateur radio transceivers, which typically exhibit poor receiver performance at these very low frequencies. This project addresses the issue by providing a design for a dedicated 137 kHz antenna preamplifier, specifically tailored to improve signal reception for radios such as the _Yaesu FT-817_. The preamplifier circuit utilizes a low-noise FET input stage, crucial for minimizing self-generated noise and maximizing the signal-to-noise ratio from weak LF signals. The design includes a detailed schematic, component values, and construction notes, enabling homebrewers to build a functional unit. The goal is to achieve significant gain, making the faint signals on 2200m more discernible and improving overall band usability. Key design considerations include impedance matching to typical antenna systems and ensuring stable operation across the narrow LF segment. The circuit aims for a **low noise figure** and sufficient amplification to overcome the inherent limitations of general-purpose HF transceivers when operating below **200 kHz**. -
Homebrew VNA capable of both transmission and reflection measurements from 0.05 to 60 MHz -
This is an experimental CW transceiver for 80m, although the same idea will work on all HF bands -
Homemade hamstuf, mostly homebrew antennas in Dutch -
Homebrew Light-weight Open-wire feedline for Portable Ops by N5ESE -
A home made antenna tuner based on the W6JJZ basic concept that ,atches balanced loads without the use of lossy baluns, can provide band-pass filtering and harmonic attenuation. -
This is a SSB and CW transceiver for the 80m and 20m bands. It produces 25 Watts out and uses a digital frequency display. -
This article by Seabury Lyon, AA1MY describe how homebrew kits for amateur radio pourposes, in order to support wire antennas -
Decoding NOAA APT weather satellite images is achieved with a homebrew receiver and a Turnstile Cross Dipole antenna, feeding data to a Pentium-3 500MHz PC running Windows XP and the WXTOIMG program. This setup, operated by VU2IIA in Mumbai, India, focuses on capturing and processing signals from NOAA satellites to generate visual weather data. The blog documents the technical aspects of constructing the receiving station, including antenna design and receiver integration. It provides insights into the practical challenges and successes of amateur satellite reception, specifically for Automatic Picture Transmission (APT) signals. Operational details cover the software configuration and image processing workflow necessary to transform raw satellite data into usable weather imagery. The content serves as a practical guide for radio amateurs interested in satellite meteorology. -
An homebrew project for a 3 element coil-loaded Yagi beam antenna for 40 Meter band -
A personal site about my homebrewed communications newsletter called Sporadic Waves. -
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A full galvanic isolation interface for digital modes tested with FT-847 -
Homebrewed transceiver for 20 meter originally born for 17 meters band -
Martin Francis NDB K9AY mast project, with pictures and homebrewing details -
Article describing how to homebrew a yagi antenna for 50 MHz, includes plans for a four and five elements yagi beam and details how how match impedence with a gamma match -
Personal Blog devoted to ham radio topics,homebrew,antenna,satellite and other projects -
Homebrew project of a windom antenna, an off center fed dipole, resonating from 10 to 80 meters -
An homebrew Lindenblad antenna designed specifically for LEOs reception. -
