Radio Amateur 08-2001

In Australia

Sue Thurgon

Here's a special report about the Twin Ciiics Radio and Electronics ClubT Inc. s Year 2000 hamfest held in the city of Albury, NSW, Australia. Through the ingenuity of All VK3CQE and John VK3LM, everything was arranged so thai W87XT in Cincinnati, OH, LISA, could view many live scenes with pictures and sound from the Twin Cities Hani lest in Albury. NSW. Australia, which occurred on August 13th, 2000, Voicc and pictures were made possible by utilizing VocalTec Phone 4.5, an Internet voice-video...

Uniden scanners

Uniden Bearcat 780 Xlt Scanner

Less -S190 Instant Rebate Special 5339.95 500 Channels 10 banks - CTCSS DCS S Meter Size 7s' Wide x 615 ie Deep x 21 16 High Frequency Coverage 25.C0Q0- amp 12.0000 MHz., amp 06.0G0- 823 finrsMHz., ge MH , Hyj.0i25-i30fi 000 MHz. The Bearcat 780XIT has 500 channels and the widest frequency coverage of any Bearcat scanner ever. Packed with features such as Tnunklracker HI to cover EDACS. Motorola and EF Johnson systems, control channel only mode lo allow yoi- to automatically trunk certain...

Qst August 2001

March, 1923r warning against using spark rigs for CW. ''General and Restricted Amateur Radio Station Licenses will be issued permitting the use of any type of transmitter CW, spark, ACCW, 1CW, SC, and phone with the restriction that when using pure CW. tliev are authorized to use wavelengths from 150 to 200 meters. When using spark, ACCW, ICW, unfiltered SC. and phone the wavelengths from 175 to 200 meters only can be used. The types of transmitters must be specified...

Weather Fax Receiver

Gei striking images directly from the weather satellites A very sensitive wideband Fm ece optimized for NOAA APT & Russen Meteor weather fax on the 137MHz baiid Covers all 5 satellite channels. Scanner circuit & recorder control allow you to automatically capture signals as satel-tilas pass overhead, even while away iVorri home. * R139 Receiver Kit less case 159 * R139 Receiver Kit with case and ac power adaplii S1&9 * R139 Receiver wJt in case with ac power adapter 239 * Interns...

The History of Ham Radio

Parts 9 and 10 Portable and mobile, more experimenting, In the early 1920s, in order to he truly portable a radio receiver had to be fairly light in weight, have a degree of efficiency, and be deigned so that it could be moved about with ease. It was dependent, above all, on some type of portable antennai Reliable operation and portability were the basic criteria, The antenna was of die loop type, of modest dimensions, and loldable, Dry A cells were the only source of sufficient current...

The Supersync

The synchronous rectifier that can be filtered The Super-Sync U the only rectifier that delivers a pure D.C tone and gives 100 rectification at ail times. It is the only rectifier that is adaptable to either hi h or low power sets ab St easily handles up to 4, XX V. The copinmtator on the Super eight inches iu diameter and is driven by a j H.P. U0 V. 60 cvcie 1800 With t h e Super there are no materials to change just connect the motor and high voltage leads and forget about it as the otily...