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, June 2, 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:

The 50 MHz and Up Group Summer Picnic and Rig Tuneup will be on Saturday, July 9

Instead of a July meeting in the TI conference center, we will have a combination tuneup party and a picnic in the Sandy Wool picnic area at Ed Levin County Park in Milpitas.

Please RSVP in the next week if possible

so that we know how many to expect and much food to bring. Please let us know

Our annual summer social event

Here's the timetable for July 9th:
0915-1000 arrive and set up your rig(s) to be tested
1000-1200 we test 10 and 24 GHz rigs for Minimum Detectable Signal and Effective Radiated Power levels
1200-???? we all enjoy the picnic

We're asking for a $15 donation to help defray some of the site rental and food costs. You can give that to David at the next meeting or at the door.

Directions to the picnic/tuneup

From I-680, I-880 or CA-237, take Calaveras Blvd east, up into the hills. The park is about 2-3 miles east of 680. Just inside the park, turn left into Downing Rd, towards the Sandy Wool park entrance gate.

Check in at the gate ($6/car if you don't have an annual county park pass).
Continue straight, past the Elm group area and past Sandy Wool Lake (both on your right).
Enter the large parking area on the right for the Sandy Wool Picnic area.
Park on the side away from the road, up against the row of trees.
Set up rigs on the edge of the open lawn area (across sidewalk on other side of trees) for testing. Arrive in time to setup for testing that begins at 10am.

Recent Documents

A slide presentations by Brian Yee W6BY on an Introduction to Amateur Radio Microwave Operation is available. Please go to the Articles and Presentations tab.


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