San Francisco
Roy Trumbull - Editor
Bill Dempster - Artist
Advertisers for this month's newsletter are:

Santucci Video Systems - Sandra Santucci - (818) 704-6324
Belden - Steve Lampen - (415) 440-8393
Media Technical Consulting - Paul T. Black - (925) 827-9511
MARCOM - Martin Jackson - (408) 768-8668
William F. Ruck, Jr. Broadcast Engineer - (415) 564-1450
Ross Marketing Associates - Kevin Frost - (408) 988-8111
Kathrein (Scala Division) - Michael Wm. Bach - (541) 779-6500
Hammett & Edison, Inc. - Dane E. Ericksen, P.E. - (707) 996-5200
Howell Communications - Mike Howell - (559) 674-8989
Econco - George Badger - 650-327-7599
Improbable Missions Fource - Mike Schweizer - (888) 4-ISDN4U
Digi-Gear / Cancomm - Eric Lane - (818) 980-9188
West Penn Wire/CDT - Michael J. La Porte - (650) 652-9080
Microwave Radio Communications - Clark Rhoads - (909) 246-1602

Babes/SBE Luncheon on Wednesday Jan 28th, 2004

Our speaker this month will be Greg Morton of E2V Technologies and he will do a presentation on the multi-stage depressed collector IOT which has improved operating efficiency over its predecessor, with no discernable change in other operating performance parameters.

There is increasing likelihood that analog transmission will last longer than originally anticipated. With this in mind, work was undertaken to establish whether this new product offers the same benefits in analog operation.

Practical test results on three- and five-stage collector IOTs are presented and the practicalities of depressed collector IOT operation are discussed for both digital and analog use. A comparison is made with the performance of conventional IOTs operating at similar powers, along with a discussion of the demands placed on the various tube types in terms of collector power dissipation and cooling requirements. Implications for the characteristics of power supplies required for the various collector stages are also discussed.

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. To make reservations call Paul Black at 925-827-9511 and leave a message on his machine.

Mary-Liz Lincoln Dies

Mary-Liz Lincoln, wife of the late Don Lincoln, died on Thanksgiving day, Nov 27th. The obit did not list a cause other than to say it was sudden.

Mary-Liz was a widow and Don a widower when they got married. They had been family friends when their late spouses were alive. Don's daughter Penny, office manager at Sutro Tower, died in February of 2001. Dan was the retired manager of Sutro Tower and he died in December of 2001.

Our State With the State

When chapter 40 incorporated we did so as a non-profit organization. Sofar, translating that into a tax-exempt organization has eluded us. We are now into the third restatement of our charter in an attempt to obtain a form that will make the tax authorities happy. The downside is that until we become tax exempt, we may have to pay a minimum corporate tax of $800 even though on an operating basis we usually lose money. It looks like we will be in the clear for 2001 and 2002. We may be forced to pay for 2003. It is fortunate that we changed to an electronic newsletter from a printed one because the money saved will just about cover the cost of this tax. Well keep you up to date on this matter.

Treasurer's Report
SBE Chapter 40 year 2003
In 2004 we anticipate an expense of $250 to $500 to move our website to a commercial web host so that we won't have to rely on Tim Pozar's server running all the time. Tim will still be involved but Tim's home hardware won't be carrying the files.

Submitted by Roy Trumbull - Treasurer

Tower Warning Signs
This is to let you know that, in addition to all the RF Warning Signs that I keep in stock, I now have the new "COMPETENT CLIMBERS ONLY" sign. Size is 12" x 18" . Bill Newbrough RF Specialties 888-737-7321

Subscribe to the online version of the newsletter

The electronic copy version of this newsletter is now availible via a mailling list. You can subscribe by going to and filling out the form there.

Web Page

Webmeister Tim Pozar has the current newsletter plus newsletters all the way back to 1996 at:

Roy also posts the current newsletter at but the posting is without links.