Roy Trumbull - Editor email@example.com
Bill Dempster - Artist
Zack Electronics - (800) 998-3947
Advanced Marketing - Frank A. Santucci - (650) 365-3944
Belden - Steve Lampen - (415) 440-8393
Orban - Rick Sawyer - (360) 715-1913
MARCOM - Martin Jackson - (408) 768-8668
William F. Ruck, Jr. Broadcast Engineer - (415) 995-6969
RF Specialties of California - Bill Newbrough - (888) 737-7321
Hammett & Edison, Inc. - Dane E. Ericksen, P.E. - (707) 996-5200
LeBLANC - David A. Hill - (650) 574-4600
Gentner Communications - Kelly Hanning - (800) 879-9317
Improbable Missions Fource - Mike Schweizer - (888) 4-ISDN4U
Broadcast Systems - (800) 801-2623
Brill Electronics - Larry or Sam - (510) 834-5888
Kathrein (Scala Division) - Michael Wm. Bach - (541) 779-6500
Harris - John Briskie - (650) 593-1837
ADC Broadcast Systems Division - Russ Erickson - 877-440-7877
BABES/SBE LUNCHEON ON WEDNESDAY May 31st
As usual, our luncheon will be at Sinbad's just south of the Ferry
Building on the Embarcadero near the foot of Mission St. We meet
at 11:30 and are seated at 12:30.
Our speaker will be Marty Acuff, Product Manager from ORBAN. He will have a presentation on the new Orban Optimod 8400 audio processor.
As usual, our luncheon will be at Sinbad's just south of the Ferry Building on the Embarcadero near the foot of Mission St. We meet at 11:30 and are seated at 12:30.
Willie has been at St. Rose Hospital in Hayward for the last five weeks after suffering complications from diabetes. Doctors amputated part of his leg. He has some up days and down days according to his wife Jeannie. He is on Dialysis every other day.
Willie is truly a legend in California TV news. He started with film and only recently retired from KTVU. He has covered or been a part of nearly every major news event of the last thirty years. He has hosted the Chinese News Years Day parade for KTVU. He has won every major award from Emmys to Bay Area Press Photographer Awards; too many to list. He is a no bull kind of guy! He tells you in no uncertain terms when you have failed and is equally emotional when you succeed! I learned a great deal from this great man. He helped mold the way I shoot to this day. Willie Kee convinced me to come to the Bay Area.
If you would like to send him a card or letter, send it to his home:
32979 Lake Wawasee St.
Fremont, Ca., 94555
Anyone interested should contact Paul Marks at KBLX Radio - (415-284-1029).
Duties include maintenance, repair, and installation of studio and transmission equipment, and assisting the chief engineer. Interested parties should contact Paul Marks at KBLX Radio (415-284-1029).
The single adjustment that will impact the DTV signal the most is the setting of the input path. The input cavity must tuned to the center of the channel and the driver to input cavity match must be set for minimum reflected power and 6 mHz bandwidth.
The bandwidth setting, usually reached by adjusting the tuner between the driver and input cavity, can be set to slightly over 6 mHz using a network analyzer. If a spectrum analyzer and tracking generator are used, the bandwidth needs to be wider and more drive will be required. This is due to the lower precision of the measurement versus doing it with a network analyzer.
The overall response can be set flat within a fraction of a dB. There will be a slight saddle at mid-channel. With no correction, the initial channel skirts will be about 30 dB. The indicated EVM (error vector magnitude) will be 9% to 12% and the S/N somewhat greater than 18 dB.
The vector signal analyzer display will show improved eye and constellation patterns after the correction is done. Typical EVM readings will be lower than 4% and the S/N greater than 27 dB.
A proper nonlinear correction prior to doing the linear correction will lower the EVM and increase S/N numbers.