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Controlling amateur radio transceivers remotely often requires dedicated software to interface with the radio's CAT (Computer Aided Transceiver) system. CATSPAW is a software utility specifically developed by N2OHZ for the Yaesu FT-100, facilitating computer-based control over various radio functions. The software provides an interface for adjusting parameters such as frequency, mode, and other operational settings, which can be particularly useful for remote station operation or automated tasks. While the specific features and user interface details are not extensively documented on the download page, the primary function centers on providing a digital control layer for the _FT-100_. This allows operators to integrate the transceiver into a larger station setup that might include logging programs or digital mode applications, enhancing the overall operational flexibility. The utility's design focuses on direct control, leveraging the radio's internal command set. As a downloadable executable, _CATSPAW_ represents a common approach to radio control software from its era, offering a direct link between a personal computer and a specific transceiver model.

Iphone app for ncdxf IARU beacon monitoring, shows the currently transmitting beacon on each band, reception charts from the active monitoring stations, and latest solar flux A and K indices

This antenna analyzer measures complex impedance over the 1.6 - 33 MHz HF spectrum

Alk engineering - filter design software and consulting

A Smith charting program. You can enter either discrete components or transmission lines, see the results on screen and/or generate Postscript output. Component values can be changed numerically or using scrollbars.

Interesting article on multiband fan dipoles. This article give an overview on designing this wire antenna, and planning a robust installation and proper feed line. Includes notes on setting up a commercial fan dipole antenna and on how diy your own.

High Voltage Dummy Load 3000 OHMS, 5400 WATTS There are 45 layers of 6 resistors, each one being 400 OHMS @ 20 Watts for a total of 270 resistors

Arduino Band decoder project available in KIT

Yaesu VX-2R mini review in spanish. Watch a VX-2 in action video by YouTube

Part 2 You're now much closer to saying goodbye to your unwanted signal problems!

This page documents how KR7RK built a Go-Box portable amateur radio station

An 80 meter band vertical loop antenna setup

Website for Amateur Radio Companion reference CD-ROM.

Understanding and solving RF interference problems using ferrite

A Useful Horizontally Polarised Omni-directional Antenna with Gain for 144 MHz

1000 feet of open wire line

Comparison of performance between an indoor random wire versus a magnetic loop using psk31

DX Cluster, classified, files and much more.

A compact antenna for 160 meters, suitable for hams tha want operate top band buh have a limited space

A Windows based Spectral Analysis/Receiver Program primarily used with the SDR-IQ, SDR-14 , SDR-IP, RF capturing hardwares

A complete guide to Baluns and transformers by WK5AJL

Authorized ham radio store for Alinco Vibroplex Pryme MFJ Enterprises Mirage Amps Ameritron Vectronics DCI Yaesu Comet Antenna

GJTracker is a antenna tracking program for windows written to be compatible with WSJT

scanner dealer

The Kenwood TS-2000 All-Mode Multiband Transceiver review

The YB7ZGP Pamaton Repeater operates on a frequency of 146.76 MHz, serving the Martapura District in Banjar, South Kalimantan, Indonesia. This VHF repeater provides local communication infrastructure for amateur radio operators in the region. The repeater's operation is managed by Syah Riyan, indicating a local amateur radio enthusiast or group maintains the station. Repeaters like YB7ZGP are critical for extending the range of VHF/UHF communications, allowing handheld and mobile transceivers to communicate over greater distances than line-of-sight. The 146.76 MHz frequency falls within the 2-meter band, a popular segment for local and regional amateur radio traffic, often utilized for emergency communications and general ragchewing. Information regarding the _Pamaton Repeater_ is presented on a blog platform, suggesting a community-driven effort to disseminate details about this local amateur radio asset.

Iran

A very basic guide to antennas concept. Explain the usage of dummy load, basic antennas like dipole o j-poles.

Ukranian radio portal

2 Meter Indoor Slim Jim Antennas for Cyclone Season and Other Uses by VK4MDX

Provider of point-to-point microwave radio system sales, service, and integration, employing refurbished name brand digital (DS1/E1, DS3/E3) and analog video radios. Specializing in Microwave Associates (M/A-COM) , Digital Microwave Corp. (DMC/Stratex) and Alcatel/Rockwell microwave radios.

A 2-metre Quad antenna project by K6WXA in PDF file

Micophone for excellence acustic

LM is a program to edit contest logs afterwards, a so-called contest post processor. With help of LM you can convert row data to many different file formats. Allow a quick input interface, and contest score for several contest. Can import & export a batch of logs and to create result lists.

A radio's transmitting power can be concentrated along the horizon by use of a GAIN antenna. Although you may still be transmitting with four watts of power, your effective radiated powerwill be greatly increased. This table shows the effects of antenna gain on a transmitter with 4 watts of transmit power.

Helix antenna design and construction details

RF shop is an Australia online retailer of Radio Communications, Electronics, RF and Microwave component products.

A 40 meter rig with SSB and CW operating modes. This is a low power QRP rig with up to 6 watts CW or PEP output.

A PDF presentation about Amateur Radio and Linux by By: Dave Mamanakis. A beginners guide to Linux for radio amateurs, this presentation cover basic concepts of the open source operative system, from the basic installation to the setup of ham radio programs.

BCL group in central america, caribes, about utilities, pirates and clandestins. In spanish

Ham Radio Store in Austria, dealer for Flex Radio, Alinco, LDG, MFJ, Wouxun and many more ham radio brands

The Super Check Partial database files provide a list of callsigns used by active contesters. The data comes from Cabrillo logs contributed by contesters themselves. Contributed logs from the past 24 months are used to create the database. These logs are combined and filtered so that they result in a fairly good (but not perfect) list. The files do not contain any QSO data, such as state, CQ zone, Maidenhead Grid Locator, etc. The dta files can be used with CT, WriteLog, TRlog, SD, N1MM Logger, NA, Win-Test, and others

DigChip is a provider of integrated circuits documentation search engine, it's also distributor agent between buyers and distributors excess inventory stock.

Icom france web site

The 23 cm amplifier pictured here delivers more than 300 watts with 10 watts drive.

A blog with loggings and information relating to shortwave pirate radio in Europe.

How resolve low power problems on Icom IC-7000

Using our components you can build a rotating tower with greater capability than 3-4 static towers. A rotating tower allows common rotation of HF stacked arrays, VHF and UHF arrays, and antennas mounted at optimum heights. Component design also allows tower shunt loading and end support for wire antennas

The basics of what is a discone antenna for wide band or bandwidth omnidirectional applications.

CB Radios, Marine, 2 way radios scanners and towers from Shawnee Mission KS USA