power mic

Balun measuements - Why can't you find the specifications for the baluns on the market? The only specifications you'll see are the ratio, the power rating and a bandwidth that is more hoped for than reality.

W1CG Low Power Balun Kit - Contruction manual to build a 4:1 balun, it has good performance from 160 through 10 meters.

Magic T combiners splitters - The magic "T" combiner is a very useful device. It can provide equal voltages, equal current, or equal power to matched or unmatched loads. It is not a magic bullet.

Choke balun  ^pop - 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

A Horn Antenna for 2.4 GHz. - This Antenna is not really practical for AO-40 reception, but horn antennas have a number of qualities useful in microwave antenna testing and noise figure measurements.

The J-pole Antenna Revisited Yet Again - The dynamics of antenna design

Omega and Gama Matching - Article about omega and gamma matching, related to bandwidth, loss and component failures, heating and power ratings

DirectionalWaveguide - Seattle Wireless - Waveguide antenna is a type of DirectionalAntenna and is a modified waveguide. A waveguide is simply a tube, either rectangular or cylindrical in cross-section, that will carry a microwave radio signal with very low signal loss

DirectionalBiQuad - Seattle Wireless - A biquad is a fairly powerful antenna which is relatively easy to construct, with impressive performance for their size. A link greater than 5 miles can be made with a pair of these as a stand-alone antenna and a Prism2 100mW card, provided you keep coax short, and your line-of-sight is clear.

MicroTV Aerial - Seattle Wireless - Yagi antenna for 2.4Ghz band

BayCountyScanner.org - Listen to public service communications within Bay County, Michigan, USA.

AtomicTime - Atomic time has a wide variety of atomic clocks and atomic watches which use a built in receiver that synchronizes them with the official u.s. time via the atomic clock in fort collins, colorado.

BEKO Elektronik - VHF power amplifiers made in germany

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 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

Nissei - VU Meter, Analog Meters, Panel Meter,Multi-Meter, SWR meter, power supply, power meters

Jetstream - Antennas, base mobile scanner and vhf antenna, coax cables, coax switch, Lightning Arrestor, mounts, power supply, speakers and wattmeters

F5VLB amateur radio astronomy station Priority listing - F5VLB and EA4EOZ have designed a small but powerful system using satfinder and standard LNB to make radioastronomy. A step by step descritpion for the novice about radioastronomy, VLB and listening to echo of meteorite.

W6JOE's Power Box - This is W6JOE's description of a battery box installation for an HF Mobile rig, which followed a number of messages on the subject on the Mobile - Portable mailing list. Interesting batteries setup.

Batteries America - Batteries for all your portable power needs.

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

Technical resources for design engineers using batteries and power supplies. - Resources for custom battery chargers and power supplies from powerstream

Car and Deep Cycle Battery FAQs - Car and deep cycle battery answers to Frequently Asked Questions (FAQs), tips, manufacturer's information, references and hyperlinks are contained on this consumer oriented Web site about car, motorcycle, power sports, truck, boat, marine, recreational vehicle, solar, and other starting and deep cycle applications.

Made your Iambic keyer - This iambic keyer uses a PIC16C84 or PIC16F84 microcontroller to generate the dot/dash timing and key the transmitter.

A CW TX for 80 meters band - This simple circuit will give about 1.2 Watts of output when powered from a 13.8VDC supply.