Harold E Price NKK

In my previous column, I'd lost the will to live. I'd asked for reader input, in hopes that I'd find something to cheer me up. I said If you disagree (or agree) with any of the above, please write to my email or US mail addresses. If you have an interesting application that is running on the packet network, let me know. Aside from some character-based white pages, I haven't seen much. We seem to be working hard, but I'm not sure we're having any fun. I had several responses, all more depressing...

By Dr Ulrich L Rohde KAWEU

Bfq81 Circuit

As the other characteristics of communication equipment improve with technology, the stability of the signals generated in systems becomes increasingly important. Most often, we use oscillators to generate these signals. Thus it becomes important to determine how best to ensure stability in oscillator designs. This is particularly true of voltage-controlled oscillators VCO , which typically use relatively low-Q resonators compared to crystal oscillators, for example . Oscillator performance can...

Upcoming Technical Conferences

With Mrf966

The 1994 AMSAT-NA Annual Meeting and Space Symposium October 7-9, 1994, Holiday Inn, Orlando International Airport, Orlando, Florida. Contact Steve Park, WB90EP, 12122 99th Ave N, Seminole, FL 34642, tel 813-391-7515. Internet SKPA QMGATE.ECI-ESYST.COM Am Pkt Radio WB90EP W4DPH. Events Friday, October 7, 1994 11 AM-5 PM, open registration, International Ballroom entrance 1-5 PM, papers and presentations Session A Mission Status Briefings, International Ballroom. Saturday, October 8, 1994, 7 308...

By Paul Wade NBWT

Edge Taper Spillover

Parabolic dish antennas can provide extremely high gains at microwave frequencies. A 2-foot dish at 10 GHz can provide more than 30 dB of gain. The gain is only limited by the size of the parabolic reflector a number of hams have dishes larger than 20 feet, and occasionally a much larger commercial dish is made available for amateur operation, like the 150-foot one at the Algonquin Radio Observatory in Ontario, used by VE30NT for the 1993 EME Contest. But these high gains are only achievable if...

October QEX Advertising Index

QEX ISSN 0886-8093 USPS 011-424 is published monthly by the American Radio Relay League, Newington, CT USA. Second-class postage paid at Hartford, Connecticut and additional mailing offices. Lori Weinberg Assistant Editor Harold Price, NK6K Zack Lau, KH6CP Contributing Editors Mark J. Wilson, AA2Z Publications Manager Michelle Bloom, WB1ENT Production Supervisor Sue Fagan Production Assistant Advertising Information Contact Brad Thomas, KC1EX, Advertising Manager American Radio Relay League...