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The 50 MHz and Up Group is a public benefit 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. Lean more . . .
Contact
For questions about this group or about programs and activities, please contact the President, Art Lange, W6RXQ: art_lange (at) trimble [dot] com
Announcements
The next meeting of the 50MHz and Up Group of N Calif will be on August 5 and the discussion will be preparation for the 10GHz and Higher contest
Report on the Ham Radio Social at the International Microwave Symposium on May 25 in Anaheim
The report and all photos are now located on a separate page. Please click here to view
June Meeting Minutes by Jim Moss, N9JIM
General Meeting - began at 7:15pm by Art Lange, 25 members & guests attending
Will brought some goodies for a raffle. Items included a 1.2g amp and a 10g qualcomm rig and lots of different waveguide pieces.
Goran(AD6IW) was one of the operators at the Stanford station for an EME contest. There was almost no US activity and the Europeans took advantage of the very short mutual window with the W Coast US and shut down early so that they would win the contest since the few US stations would have very few contacts.
Jeffrey WA6KBL gave a report on the IMS and the Ham Radio Social at that Symposium in Anaheim. (report is already printed above). Great SBMS support. 9 of our members volunteered to help with the IMS Ham Radio Social which will be in San Francisco in 2016. They were presented with a Minicircuits 50% off certificate good for up to a $100 purchase.
Goran(ad6iw) gave a short discussion on phase noise measurement. Gary(ad6fp) is working on a paper about this.
Next meeting is Saturday, July 10 at NSC Employee Park, 11am. RSVP to Jim (n9jim). Food will be from Armadillo Willy's + soft drinks will be provided. (Jim to arrange.) Donations at the picnic to defray club costs
Program tonight was on 1.7ghz NOAA POES sat reception using GNU radio and USRP(universal software peripheral). Presented by Dave (af6kd), Mark(ki6dhu), and John(ae6ho)
Watch for an upcoming announcement of 5.8GHz and 10GHz equipment which will be made available to only members of the 50MHz and Up Group.
Future Meetings:
The August meeting will be a preparation for the 10GHz and Up Contest.br>Announcement of Upcoming Events or Lectures
Watch for an upcoming announcement of 5.8GHz and 10GHz equipment which will be made available to only members of the 50MHz and Up Group.
Presentation on the Round Septum Feed with Dual Circular Polarization
Improvement of the Stellex/Endwave YIG Synthesizer
The Stellex/Endwave mini-YIGs along with their phase locked synthesizer board are able to provide you with a stable and relatively low noise X-band signal source. However, they designed it incorrectly and most of the output power of the YIG is needlessly lost.
I have redesigned the sampling circuits so that you will now obtain +12dBm to +13.5dBm output power. It is an easy and inexpensive modification.
Because John Miles, KE5FX did the original work on using these surplus items and there are many links to his webpage, I have put my article along with nine photographs and figures on his webpage. Please
click here to go to this page and then scroll down to nearly the bottom of that webpage.
Current Updated Rosters Available to Members
Members may obtain the new updated roasters in several sort orders by logging into the Members Only webpage. It has been updated on June 30, 2010.Two presentations by Brian Yee W6BY are available for download
A slide presentation on an Introduction to Amateur Radio Microwave Operation is available as a PDF. Click here to download itThe second presentation is located on the Events tab page.
Beacons
Microwave Beacons in operation UPDATED The following beacons are known to be operating as of 04-05-2010:
| Where | Specs |
|---|---|
| Leeson Site, near Mt Thayer, KF6KVG: | 10367.990MHz, 24191.975MHz, 47087.99, 79920MHz, 37deg 10.034min N, 121deg 55.500min W |
| Mt Allison, AD6FP power unknown | 10369.192MHz, 37deg 29.905min N, 121deg 52.206min W |
| Mt Allison, AD6FP power unknown | 24192.01MHz, 37deg 29.905min N, 121deg 52.206min W |
| Mt Allison, WA6QDP power unknown | 47061.017MHz, 37deg 29.905min N, 121deg 52.206min W |
| Mt Vaca, W6ASL: | 10368.325MHz, 38deg 24min 51sec N, 122deg 06min 50sec W |
| Mt St Helena has been removed | |
| Mt Frazier, N6CA/B DM04MS 1.3w output 8013ft | 10368.3101MHz, 34deg 46min 30sec N, 118deg 58min 09sec W |
| Palos Verdes, N6CA/B DM03TS 1.6w output 1300ft | 10368.300MHz, 33deg 46min 15sec N, 118deg 22min 30sec W. |
| Santiago Peak, KE6JUV DM13FR unknown pwr 5664ft | 10368.330MHz, 33deg 42.690min N, 117deg 32.020min W. |
| Heaps Peak, call? DM14KF unknown pwr 8000ft | 2304.11MHz (drifts 40KHz from 2304.08 to 2304.12) 34deg 14min 2.4sec N, 117deg 8min 25.2sec W |
| San Diego, K6QPV/B DM12MQ 2565ft, +34dBm horizontally polarized horn toward the LA basin | 24.192050GHz +/- 500 Hz, 32deg 41.8min N, 116deg 56.09min W. |
| San Diego, N6IZW/B DM12MQ 2565ft, omni +34dBm | 10.368360GHz, 32deg 41.8min N, 116deg 56.09min W. |
| San Diego, K6QPV/B DM12MQ 2565ft, omni +35dBm | 5.760000 GHz GPS Locked, 32deg 41.8min N, 116deg 56.09min W. |