The 50 MHz and Up Group is an educational and public service amateur radio organization centered in the San Francisco Bay area. The group is interested in developing and utilizing communications on frequencies from 50MHz up through light-waves. The group is open to any related topics that might be of interest to members, such as: technology, design, construction, operation, public service, contesting and antennas. Learn more . . .
For questions about this group or about programs and activities, please contact the 2017 President, Paul Zander AA6PZ: AA6PZ (at) arrl [dot] net
2017 dues and member information must be updated
If you do not have any changes at all in your contact information, then simply send an email with a sentance to Jeffrey Pawlan satating that nothing has changed. Please use email@example.com
To send a memberform with your updated information or to join, please go to the Membership tab of this website.
Dues are $10 for a year, $15 for two years. This can be brought to a meeting or sent to the new Treasurer:
1111 Pecos Way
Sunnyvale CA 94089
Make your check payable to 50MHz and Up Group of N. Calif Inc
Our next meeting of the 50MHz and Up Group of N. Calif will be a special joint meeting on Thursday, April 6, 2017. For this meeting only, the IEEE Antenna and Propagation Society Chapter and the Microwave Theory and Techniques Chapter will be invited. They will provide free dinner consisting of pizza and drinks beginning at 6:30pm. Please come at 6:30pm to eat and indroduce yourselves to our guests. This meeting will be at the TI conference building, in the large auditorium. You get there from Kifer Rd as shown on our meetings page (click on meetings in the selection bar)
Our program will be:
- Introductions at 7:00pm sharp
- a technical talk by Jeffrey Pawlan, WA6KBL on "Horizontally Polarized Antennas for Microwave Bands using a Waveguide Structure with an Array of Slot Pairs". This talk will begin with the fundamentals of slotted waveguide antennas. A method of approximate design will be shown using an equivalent of standard shunt connected series resonant networks. It will concentrate on how to achieve a truly omnidirectional radiation pattern in the azimuth plane. Methods for improving the pattern will be described after giving the electromagnetic explanation why customary slotted waveguide beacon antennas have poor patterns. Several new mechanical realizations will be shown.
- questions will be answered following the talk and we will end before 9pm.
Other Upcoming Events
Friday March 24 Paul, AA6PZ will give his talk on "Principles of Directional Antennas" at a meeting of the Foothill Amateur Radio Society (FARS) in Los Altos. Talk covers many common antennas made from wires or other straight conductors (but not horns or dishes). Details at: http://www.fars.k6ya.org/meeting2017
Minutes from the Jan. 2017 meeting by Brian KlineMike Lavelle called the meeting to order at 7:05pm.
Announcements and Upcoming EventsMicrowave Update 2017, will be in Santa Clara, October 26-29, at the Santa Clara Biltmore.
2017 Officers and Board Members50 MHz and Up Group officers and Board members elections were held at the January meeting.
Paul Zander (AA6PZ) was nominated for president
Art Lange (W6RXQ) was nominated for vice president
Brian Kline (WA6QDP) was nominated for secretary
Oliver Barrett (KB6BA) was nominated for treasurer
Gary Lauterbach (AD6FP) was nominated as a board member
Jerome Peters (AF6UX) was nominated as a board member
Mike Lavelle (K6ML) was nominated as a board member
All of the above were elected without opposition
This ended our formal business
The formal meeting was adjourned and followed by two talks, one by Mike Lavelle K6ML and one by Art Lange (W6RXQ)
There was a roundtable discussion afterwards.
The meeting ended at 9:00 PM.
Microwave Beacons in operation UPDATED The following beacons are known to be operating as of 04-16-2016:
|Mt Vaca||CM88wj||38.415, -122.116||10368.325||W6ASL||+30dBm||10dBi omni||CW ID|
|Mt Allison||CM97bl||37.500, -121.872||10369.192
+30dBm total out
|CW ID, drifts ~10 kHz
Linear translator: Output is 11-55 kHz above beacon
Input 600 kHz below desired output
FM ID, aimed to Los Gatos
|Mt Leeson||CM97ae||37.167, -121.924||10367.990
|FM ID, locked, aimed NW
FM ID, locked, aimed NW
FM ID, unlocked, aimed NW
no ID, locked, aimed NW
|Bear Mtn.||DM06ir||37.747, -119.281||24191.990||W6BY/B||+27dBm||20 slot omni||locked, IDs as DM07IC, will fix|
|Mt Frazier||DM04ms||34.775, -118.969||10368.310||N6CA/B||+31dBm||14dBi omni||CW ID, locked|
|Heaps Peak||DM14kf||34.235, -117.141||10368.370||?||+?? dBm||??dBi omni||CW ID|
|Palos Verdes||DM03ts||33.747, -118.336||10368.300||N6CA/B||+32dBm||14dBi omni||CW ID, locked|
|Santiago||DM13fr||33.712, -117.534||10368.330||KE6JUV||+27dBm||10dBi omni||CW ID, locked|
|San Miguel||DM12mq||32.697, -116.935||5760.000
CW ID, locked
CW ID, locked, aimed to LA