apt satellite

The Broadband Double-Bazooka - The Broadband Double-Bazooka Antenna — How Broad Is It? 18-1. (Adapted from Technical Correspon- dence, QST, September 1976) The increasing interest in using the coaxial dipole.

QFH antenna for weather satellite band - This article describes how to make a quadrifilar helix (QFH) antenna easily, from inexpensive materials: uPVC plumbing pipe and RG-58U co-axial cable

13 cm Helix Antenna  ^pop - Here is the design of a 2.4 GHz antenna that is ideal for amateur satellite communications. This antenna is easy to assemble because the design itself tolerates inaccuracies in the construction without really affecting performance.

Handi-Tenna portable satellite antenna - Here is a high-performance hand-held beam antenna that is easy to build and guaranteed to improve your downlink from the LEO satellites over ANY rubber duck or mobile whip

ITU: Frequency Allocations - Table of frequency allocations for Amateur and Amateur Satellite Service

RFAC Solutions - RF Connectors Cable Assembly Attenuators Filters High Power VHF Amplifiers, Adapters MMCX MCX SMA SMB SMC BNC TNC N from RFAC Solutions

Electronika Int. - Electronika manufacturers Coaxial Cable Assembly, RF Connectors, Adapters, Power Dividers, Couplers, Crimping Tools

Electronika International Inc - Electronika International Inc, Cleveland, OHIO manufacturers wide range of Coaxial Cable Assembly, Coaxial Connectors & Adapters, Power Dividers, Attenuators, Coaxial Switches, Amplifiers, Fiber Optic cords, Bias TEE, Isolator & Circulator and other products

National RF, Inc. - National rf provides consulting engineer services, and manufactures direction finding antennas, test equipment, communications receiving equipment and adjuncts, satellite antennas, voice amplification and audio equipment.

Pactor - PACTOR can be viewed as a combination of two earlier digital modes, packet radio and AMateur Teleprinting Over Radio (AMTOR). PACTOR provides improved throughput because its transmission speed adapts to the quality of the link and it uses Huffman compressed characters.

Pactor ii - PACTOR-II is a fully backward-compatible improvement to the original PACTOR system. It is an adaptive mode that applies different modulation and encoding methods depending on the channel quality.

QRP Station in a Bag - QRP Station in a Bag is a complete QRP station in an old laptop PC carrying case (photo). It is a true "Work in Progress" in that wd8rif is constantly changing the contents of the bag as learn what works and what doesn't.

The Amateur Satellite Resource Guide - a comprehensive guide to amateur satellite, written by Mike Seguin, N1JEZ in pdf format

Amsat DSP Satellite Transceiver Project - The DSP Satellite Transceiver is a conceptual transceiver designed as a dedicated unit for amateur satellite operators. The initial concept was brought about by the lack of satellite functionality on modern amateur radio transceivers, and the specialized requirements of the ham radio operator who utilizes OSCAR amateur satellites.

G4ILO Receiving weather satellites - If you are interested in the environment, the weather and other natural phenomena then there is something magical about being able to see pictures of the earth from space just as it is right this minute. One way you can do this is by receiving images from weather satellites.

NASA - Science@NASA J-Track Spacecraft - The official NASA tool for orbital tracking of the International Space Station and the Space Shuttle is available through Human Space Flight's Orbital Tracking web page. Shuttle and Station tracking will be removed from J-Track in the near future, but many uncrewed satellites will still be available for tracking

Batterytech - Buy nimh, ncicad, and li-ion batteries, chargers, and analyzers for laptops, pdas, digital cameras, cellular phones, nextel radios, hand held scanners, and eliminators

Heston Supply - Adapters, Antenna and Antenna Parts, Coax and Wire, Connectors from Longview WA

Wyzcom - Amateur TV, Satellite TV Equipment, Broadband Via Satellite, Weather Monitoring

Mikra s.r.l. - Surplus - Surplus electronics, satellite receivers, GPS

Adaptive Home Logic - Monitor / Control your home with APRS short text messages. Featuring Scheduling / Conditional Events, 2-way Speech, E-mail, file data, serial data, digital I/O, Sunrise/Sunset, natural language interface, interactive screen overlay scenes, logging + More

SatTrack Suite - Satellite Tracking and Orbit Propagation, Reports and Mission Planning Products, Pass Scheduling and Orbit Event Analysis, Dynamic Communications Link Modeling, 3-D Visualization of Complex Scenarios User Defined Regions and Contours, Constellation and Formation Flying Support, Global Positioning System Coverage

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

Recovering parts from surplus - What electronic parts you can recover from PC monitor, VCR, CD-ROM, FDD, HDD , Laptop, Motherboard, SmartCard reader or Printer

PG-4S to TH-F6 / TH-G71 Adapter - Wiring schema for TH-F6A or TH-F7E Convert a PG-4S to TH-F6 F7 / TH-G71 Adapter Those who already have a PG-4S may want to consider going this route, rather than buying two cables.