Home
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
Contact
For questions about this group or about programs and activities, please contact the 2022 President, Jim Moss (N9JIM): n9jim at pacbell.net
The next regular meeting will be June 6 at 7pm. Please note the new time and the new location.
This will be a hybrid meeting in person and you can view or participate via zoom.This is the new location:
HackerDojo
855 Maude Ave
Mountain View, CA
click here for the google map to HackerDojo
or you can Join the Zoom Meeting
https://us02web.zoom.us/j/86972725373?pwd=Yk5NQm1aZGswZ0VDSUdkQVVzdjAwZz09
Meeting ID: 869 7272 5373
Passcode: 10368
One tap mobile
+16699009128,,86972725373#,,,,*10368# US (San Jose)
ANNOUNCEMENTS
Events (Jim)
Mt Allison 10GHz translator net 3rd Sunday of the month at 4PM.
SBMS 2GHz and Up contest May 6 and 7
Electronics Flea Market June 11 (6AM-12PM) at West Valley College (if anyone would like to help sell some club inventory (from John N6PLR) please contact Jim)
JUne VHF contest June 10-12
OLD BUSINESS
Treasurer Report
NEW BUSINESS
July Picnic and Signal Contest Plans
PRESENTATION
Converting Surplus Wavelab 23 GHz radios to 24 GHz Ham Band using the PA0MHE Wavelab Add On PCB (aka Wavelab 24 project).
Our speaker is Jim McMasters, KM5PO, from the North Texas Microwave Society.
ROUNDTABLE
Dues are required for 2023 if you are in the SF Bay area. If you are not within driving distance then you can be a Friend of the 50MHz and Up Group instead of a Member. Then you do not need to pay dues. You will receive emails but you cannot vote.
The officers, board members and members at the meeting decided to resume dues.
If you have changed your address, email, phone, other info, please send a simple email to jpawlan@yahoo.comIf nothing has changed at all, then once a year please send an email saying nothing has changed. Make sure you state whether your email address has been changed or not.
To send a memberform with your updated information or to join, please go to the Membership tab of this website.
If you have not paid your dues for 2023 please either pay in person at a meeting or mail a check to the Treasurer.
Dues are $10 for a year, $15 for two years. Mail this to the Treasurer:
Oliver Barrett
1111 Pecos Way
Sunnyvale CA 94089
Make your check payable to 50MHz and Up Group of N. Calif Inc
The 2023 Officers and Board Members
- President: Jim Moss (N9JIM)
- Vice President: Dan Klem (AG6KG)
- Secretary: Brian Kline (WA6QDP)
- Treasurer: Oliver Barrett (KB6BA)
- Board of directors:
- Mike Lavelle (K6ML)
- Gary Lauterbach (K6MG)
- Paul Zander (AA6PZ)
50 MHz and Up Group meeting minutes not submitted
Paul Zander's Presentation on Signal to Noise Ratio of wideband FM
Here you can download and read the presentation by Paul Zander (AA6PZ) on the signal strength and signal quality from the microwave beacons, and the FM threshold effect. Please click here to view or download the slides Also download this document containing explanations: Please click here to view or download the Word document
Beacons in Northern and Central Calif
The SBMS and the San Diego Microwave Group are the best resources for Southern Calif.Here is our document about the upgrade and operation of the Mt Allison Beacon
Please click here to view or download
Microwave Beacons in operation The following beacons are known to be operating as of 01-29-2023:
| Name | Grid | Coords | Freq | Call | Power | Ant | Comments |
|---|---|---|---|---|---|---|---|
| Stanford University | CM87WJ | 37.403, -122.165 | 122.400G | K6ML | +2 dBM ERP | 70 degree horn aimed E | CW ID, locked |
| Mt Allison | CM97bl | 37.500, -121.872 | 80.832G, 40KHz low | AD6IW | unknown | aimed Alviso | CW ID, locked |
| Mt Vaca | CM88wj | 38.415, -122.116 | 10368.325M | W6ASL | +30dBm | 10dBi omni | CW ID |
| Mt Allison | CM97bl | 37.500, -121.872 | working 10369.001M 24192.010M 47088.000M |
K6MG N6NU/B KF6KVG |
not measured +13dBm +7dBm |
10dBi omni " " 12dBi omni +20 dBi horn 27 deg beamwidth, aimed SW |
CW ID, locked, S-meter output Linear translator: Output is 1KHz-40kHz above beacon Input 600 kHz below desired output CW ID locked CW ID locked |
| Mt Leeson | CM97ae | 37.167, -121.924 | 10367.990 24191.975 47087.99 79919.92 |
KF6KVG | +20dBm +20dBm +5dBm -5dBm |
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 being rebuilt | 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 |