50 MHz & Up Group

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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 2016 President, Mike Lavelle K6ML:  miclevel (at) comcast [dot] net

To send a memberform with your updated information or to join, please go to the Membership tab.

Meeting Announcement

Our next meeting of the 50MHz and Up Group of N. Calif will be a regular meeting on Thursday, Sept. 1, 2016 at 7pm. Our meeting will be at the usual TI conference building, room 2. You get there from Kifer Rd as shown on our meetings page (click on meetings in the selection bar)

Our program will be:

Special Additional meeting in September

Most of the Sept 1 meeting will be about the 10GHz and Up contest. So the following lecture will be sponsored by the IEEE Antenna and Propagation Society (AP-S). This will be on Tuesday, Sept. 6 and the location will be in the very same location as our regular meeting. Everyone is welcome and there is no charge.

Easy to manufacture and very high performance microwave or millimeter wave horn antennas by Jeffrey Pawlan, WA6KBL

In addition to antennas, Jeffrey will begin with a short review of using inexpensive copper water pipe as a very low loss medium to connect your radio to your antenna. He will discuss modes, polarization, and the easy ways of working with these in circular waveguide. Jeffrey designed ultra high perrformance feedhorns for the 10GHz and 24GHz bands. They will illuminate your offset dishes very efficiently and eliminate the additional noise from behind and below the antenna. The designs will be shown along with a comparison of the simulated and the actual measured results. Some new research will be shown with a broadband design for the 30 - 38GHz millimeter wave band.
Tuesday, Sept 6, at the usual TI conference building, room 2. You get there from Kifer Rd as shown on our meetings page (click on meetings in the selection bar)
Networking time with Food and Beverages begins at 6:30 PM with the talk starting at 7:00 PM.
Please Register at https://www.eventbrite.com/e/ieee-antennas-and-propagation-society-meeting-tickets-26834933007 (click here)
for the food orders.

Minutes from the August 2016 meeting by Brian Kline

Mike Lavelle called the meeting to order at 7:14pm.

Announcements and Upcoming Events

DeAnza swap meet, September 10
ARRL 10 GHz and Up contest Second weekend September 17-18
MUD (Microwave Update) 2016, St. Louis Missouri October 13-15
New Business
Mike provided a brief overview of the Tune up party results. The complete results and photos are on the Articles tab of this website
This ended our formal business
The formal meeting was adjourned and followed by a round table discussing the first weekend of the 10GHz and Up contest, and other recent microwave activity.
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

10dBi omni

12dBi omni
open WG
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
KF6KVG +20dBm
2.5" horn
1.5" horn
1.25" horn
0.6" horn
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
+34dBm EIRP
10dBi omni
12dBi omni
CW ID, locked
CW ID, locked, aimed to LA