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Yaesu ATAS 120 Autotune Antenna Repair

The Yaesu FT-2000 on RigPix

A 23 signal source project by W6PQL

Moxon is a rectangle shaped directional antenna, originally designed by Les Moxon G6XN. There are couple of advantages of using this antenna. It is small in size, Easy to mast, Balanced to 50 Ohms, Near 1:1 SWR, Excellent Front to Back (F/B) ratio, Large bandwidth

Three Yagi antennas for the six meters band by 9A7PJT. Include a 4 element yagi, a custom design 4 element, and a 5 element yagi with antennas pictures and design.

Council Bluffs area Sheriff, Police, Fire, and State Police IOWA

DIXPRS is an APRS Internet Gateway and Digipeater software for HAM radio use. It is designed to be portable and platform independent as much as possible. To reach this goal it is written in Python with minimal dependency considering older versions of operating systems and Python.

A different implementation of the G7FEK HF multiband antenna with some adjustments and modifications

How to reduce and eliminate the RF interference at VHF caused by the wired network

Homebrewing portable antennas for field day operations

The KF2EF Repeater - 146.445 / 147.445 - PL 131.8 * Toms River, NJ

This is multi multi radio amateur contest station oh2u which have won three european champions

Ultra portable and lightweight folding beam antennas based on G3TXQ design

Receiver performance test of the Icom IC-7610 transceiver done by Rob Sherwood

Amateur TV transmitter products, xlr connectors

MBU Cluster is simple android application for ham radio operators to view live the spots on mobile device. All the spots are refreshing every 60 seconds.

HamBlog exists to give amateurs a place to post ham-related weblogs in a community environment.

A description of a simple Lowfer beacon transmitter.

This tutorial will get you on the road to running your own live scanner feed on the Internet, be it railroad, fire/ems or law enforcement related.

Designer and manufacture of Airborne Antenna & Radomes covering a range of applications. Products include vhf antenna ,uhf antenna,navigation antenna,comm antenna,blade antenna,vor/ils antenna ,L band antenna, direction finding antenna,DF antenna,vor,ils, IFF antenna on aircraft,aircraft antenna for airborne application.

Experimental Longwave Transmissions from Tower Hill wayland Massachusetts Operator Name Warren, Ham Call K2ORS, Frequency: 137.7796 KHz

A simple drawing schematic of a portable field dipole for 14 MHz with dimensions in meters and instruction for setting up the antenna and to store the radial for easy transportation

Offer a wide variety of activities, including instruction to prospective new Amateurs, and classes for upgrades to General and Extra

Cool QSL - QSL Card printer

Manufacturer of transformers, inductors coils and chokes. Custom winding, EMI / RFI Filters, Antenna Windings on ferrite rod, Antenna Winding on phenolic. Any antenna coil designs.

This article was first published in CQ-TV issue 208. Author try to explain digital television in layman's terms and without getting too involved in mathematics.

The adventures of a small Contest Group

A simple, cheap and easy to build 26 feet long vertical antenna that works DX on 20 - 10 meters including WARC Bands, it is designed for portability for field days, camping, or permanent installation, cost, and to achieve at least 1/2 wavelength on the WARC bands.

Acmetex Group Company is a leading integrated manufacture of high temperature textiles in China. Fiberglass products.

HF VHF UHF antenna ideas to be used for field days. All antennas are quick to set up and take down and offer proven performance and flexibility. Presentation offered by Mahoning Country ARES

Passive Band-Pass Filter, low-pass filter calculator

A selection of speakers or headphones for use with amateur radio equipment. Includes an interesting paragraph comparing Dynamic and Electret Condenser Microphones, but also about audio Equalization.

Display and Send Hellschreiber On Your iPhone and iPad - iPhone / iPad app to send and receive Hellschreiber

Solar activity can aid or hamper HF propagation beyond line-of-sight range, WA1SVF and N6BV answers to questions about Sun influence on radio signals propagation

Zeus Radio program is designed specifically for the ZS-1 transceiver and supports all the basic functions (RIT, XIT, SPLIT, Noise Reduction, Auto Notch Filter, etc.) in order to work in the broadcast brought only pleasure. Zeus Radio works also with Hermes, Anan, Afedri, Red Pitaya, HiQSDR, Odyssey, Extio, RTL-SDR, Peaberry, Winradio, SDR-IQ, Afedri

FTRestore is a free Windows desktop application to upload, download and compare memory channels and menu settings in the Yaesu FTDX1200, FTDX3000 and FT-991/FT-991A model transceivers.

Homebrew Amateur Radio 440Mhz Interdigital Bandpass Filter

This circuit is very simple and has a fantastic range of potential uses.

Win4Yaesu Suite is a commercial software for Yaesu FTDX and FT991 Radios. It includes support for SDRPlay and LPPAN panadapters. It interfaces to all third party hardware and software programs including HRDLogbook, DM780, DXLabsSuite, NAP3, N1MM+ and many more.

In this article you can find solutions to the problem of keeping your ham radio antennas hidden from the CCR Police

Announces the retirement of Brand Electronics, a manufacturer specializing in **power meters** and various ham radio accessories, effective 2025. The company has served the amateur radio community for over 35 years, providing equipment for station setup and operation. The product line historically included accessories compatible with major transceivers from Icom, Yaesu, and Kenwood, alongside components and technical references for homebrew projects. Their offerings supported accurate RF power measurement, crucial for optimizing antenna systems and ensuring legal limit compliance. This notice serves as a final update regarding the company's operational status, marking the cessation of manufacturing and sales activities. The site provides no further details on product support or inventory liquidation.

Essentially, a choke balun is designed to 'divorce' your antenna from the feed line. if your feed line is coaxial cable then you don't want it to be part of your antenna. you want to be able to deliver all your power to the radiator itself, i.e. 'the antenna'. a choke balun does this admirably

Fort Myers Amateur Radio Club is located in Fort Myers Florida. FMARC has around 300 ham radio operators.

160-10 Meters 1500 Watt Amp - W4NFR

This project is a Software Defined Radio Receiver. It has a frequency range of 24MHz 1.2GHz. It can demodulate AM, FM, USB, LSB with selectable bandwidths of 600, 2400, 2800, 3200 and 6400Hz. Using a simple RTL-SDR Dongle and Raspberry Pi 3 computer using GNU RADIO

Strictly Ham has a large retail presence in Australia and welcomes enquiries from New Zealand, the Pacific and Asia. Strictly Ham offers a comprehensive range of high quality Amateur, CB and Marine products at very competitive prices.

The article, "Using 75 Ohm CATV Coaxial Cable," details methods for employing readily available 75-ohm CATV hardline in standard 50-ohm amateur radio setups. It addresses the inherent impedance mismatch and practical considerations, such as connector compatibility, for hams seeking cost-effective, low-loss feedline solutions. The resource specifically contrasts common 50-ohm cables like RG-8, RG213, and _LMR-400_ with 75-ohm hardline, highlighting the latter's lower loss characteristics, particularly at VHF and UHF frequencies. It explores two primary approaches to manage the impedance difference: direct connection with an acceptable SWR compromise and precise impedance transformation. The direct connection method acknowledges that a perfect 1:1 SWR is not always critical, especially when using low-loss coax. For impedance transformation, the article explains the use of half-wavelength sections of coax to reflect the antenna's 50-ohm impedance back to the transmitter, noting its single-frequency effectiveness. It also briefly mentions transformer designs using toroid cores and a technique involving two 1/12 wavelength sections of feedline for broader bandwidth. The content further clarifies the concept of _velocity factor_ for calculating electrical versus physical cable lengths, providing a generic formula for precise length determination. It notes that while half-wave matching is practical for 10 meters and above, it can result in excessively long runs for lower bands like 160 meters, potentially adding **250 feet** of cable. The article also mentions achieving a usable bandwidth of 28.000 MHz up to at least **28.8 MHz** on 10 meters with specific transformation techniques.

A postage-stamp-sized DSP microcontroller imbedded in the TNC-X eliminates the dedicated laptop or PC.