Maritime Radio Historical Society
Maritime Radio Historical Society

Field Trip

Circuit Detail
Circuit Detail

Check out all the MRHS Field Trip photos.


City of Oakland coordinates with ORCA for emergencies.

Maritime Radio Historical Society
Maritime Radio Historical Society

Field Trip


Click image  to expand

Next Event:

11 AM Saturday June 26
Field Day @Sequoia Arena 
or June 26-27 @ your home QTH
Welcome, New Members!

Charles King KN6PGD, Richard Janek KG6RKK,

Christopher Dove KN6PFX,

Cathi Walton K2CJW, Jonathan Kwei N6JCF, 

Sankara Rameswaran W6SRW,

Craig Kolb KN6NCN, Jason Colby KJ6VRC,

Brian Di Giorgio K6BJD, Sean Frost N6SAF,

Michael Okun AC6Y,Brandon Murphy KN6LLZ,

Igor Lacan KM6UAU, Bradley Bronlow K6EIR,

Clinton Cleveland AE6OX, Ron Bunch W4FEK.



per year

ORCA dues include extended repeater privileges for licensed members. Send the membership form with a check payable to ORCA to ORCA, P.O. Box 21305, Oakland, CA 94620-1305.

The NewsLetter is distributed by our posting it to this website, followed by a Google Group email notice. Newsletters will be mailed only to paid members who specifically request that.

Future Events
Pending status of COVID-19
Weekly Net

Thursdays 19:30 local time on:

146.88 Mhz, minus offset, PL tone of 77.0 Hz and 442.40 Mhz, plus offset, PL tone of 77.0 Hz.

Repeater portion can be accessed remotely via the linked VoIP Nodes.


Simplex net follows on 147.585 or the alternate simplex frequency 146.565.

Net Control Operators

Net Control Manager is Peter Marcuzzo KK6KZG

Newsletter Editor

Send newsletter articles to Tom Tazelaar KG6MAC.


This website was designed by Mike Pompa KB6MP with contributions from Peter Strauss KO6R, Bob Firehock KE6IUE, David Otey WB6NER and Tom Tazelaar KG6MAC. Please contact us from the Contact Us page.

ORCA is an ARRL Affiliated club. Renew your ARRL membership or join ARRL via ORCA and we get a few bucks in return!

ARRL national amateur radio organization