Support the MRHS

We need your help.  It's as simple as that.

Our small group is now responsible for a facility that once required dozens to maintain.

We have funded everything from the costs for rewinding transformers to purchasing power tubes for the transmitters from our own pockets - and we feel privileged to do so.

But the larger projects we now face, such as antenna restoration, are beyond our personal means.

Won't you help?  Your donation is tax deductable and we promise to get the most out of every dollar we receive.

Most important, you'll know you have helped keep the traditions of maritime radio alive.

Just click on the button below or send a check to:

Maritime Radio Historical Society

PO Box 392

Point Reyes Station, Ca 94956


Thanks and VY 73...






Updated Information

We are sorry to announce that because of the ongoing closure of the KPH transmit and receive sites due to COVID-19 precautions it will not be possible for Night of Nights XXI to take place.  

While it's disappointing for everyone that the Night of Nights tradition will be disrupted this year, the health and safety of our colleagues must come first.  But rest assured that as soon as we regain access to the transmit and receive sites we'll be working hard to bring the equipment back on line and return KPH, KFS and K6KPH to the air.   

While KPH, KFS and K6KPH will not be on the air for Night of Nights XXI, MRHS members will be active from their home stations using their personal call signs on the usual K6KPH frequencies (3550, 7050, 14050).  At 5:01pm Pacific time on 12 July (0001gmt 13 July) these stations will send the traditional Night of Nights opening message that in the past has been sent via KPH.  They will then stand by for calls or will call CQ NON or CQ NIGHT OF NIGHTS.  None of us have big gun stations so listen carefully for these call signs: WB6OVV, N6BBF, WB6UZX, AA6IF, N6AD, W6AWO, W6DHM and possibly others. 


How to Stay Connected with the MRHS During the Station Closure

As most True Believers probably know by now, the Point Reyes National Seashore has closed the park and suspended all volinteer activities until further notice.  Since we at the MRHS are all park volunteers, that includes us.  Thus KPH, KFS and K6KPH will be off the air "for the duration". 

But there are several ways to stay in touch during the shut down:

  • MRHS On The Air - MRHS members are on the air from their home stations every Saturday beginning at 1200 Pacific time on all the K6KPH frequencies (see below). 
  • MRHS Newsletter - We continue to publish our Newsletter.  Click HERE for the latest issue.  Or click HERE to subscribe to the Newsletter and have it sent directly to you.
  • MRHS Videos - Two good videos about the MRHS and KPH have been recently produced.  Click HERE for the Bay Area Back Roads video and HERE for the Tech Crunch video.  Plus a video blogger has posted here KPH video HERE.


Stations, Frequencies and Hours of Operation

Update 9 September 2019: K6KPH frequency 18097.5 has been returned to service.  21050 has been removed from service.

Here's the list of stations operated by the MRHS and their frequencies.  Please note the frequencies that are not currently in service.  They're included for your future reference.  Check back here or, even better, SUBSCRIBE to the MRHS newsletter for updates.

KPH: 426, 500, 4247.0*, 6477.5, 8642.0, 12808.5, 17016.8, 22477.5


K6KPH: 3550.0, 7050.0, 14050.0, 18097.5, 21050*

* Out of service

All times are Pacific (San Francisco) time.

KPH, KFS and K6KPH are operational on Saturdays only.  KPH and KFS begin PX and WX broadcasts at 1000 with live operators on duty starting at 1200.  K6KPH begins operation at 1200.  All stations continue operations until about 1700.

KPH Software Defined Receivers

NOTE: The SDRs are temporarily off line due to a failure of the Internet connection at the KPH receive site.  Due to the park closure we are unable access the site to diagnose and repair the failure.

Now you can listen to the LF, MF and HF bands using the same antennas the operators at KPH use - from the comfort of your computer no matter where you are in the world.

We have installed several Kiwi Software Defined Receivers (SDRs) covering all frequencies from 0 to 30Mc - and made them publicly available via the Internet.

The LF/MF receiver uses a Marconi T antenna while the HF receiver used a TCI-530.  Both are located at the KPH receive site where electrical noise is extremely low.

We are still fine tuning the installation but the project has reached the point that it's ready for you to use.  Here are the links.

For LF/MF click HERE

For HF click HERE

We'd appreciate your comments.  Please write to


MRHS Newslettters

To subscribe to the MRHS Newsletter click HERE

For back issues of the MRHS Newsletter click HERE


MRHS On-Line Store!

Get your MRHS mugs, hats, t-shirts and all sorts of other high class swag at our on-line store.  Be the envy of your friends and support the MRHS at the same tine.  Click HERE to get started.


MRHS Offers Radiotelegraph Exams!

The Maritime Radio Historical Society is now authorized to administer the examination for the commercial radiotelegraph license.  Yes, the FCC still issues this ticket! Visit the MRHS Events page for more information.

Visit Us

The KPH receive site is open for visitors every Saturday 1200 to 1700 local time.  Visitors are welcome!  The receive site is located at 17400 Sir Francis Drake Blvd in the Point Reyes National Seashore, just past G Ranch on the way to the lighthouse.  Whisper "True Believer" when you visit for access to our Treasure Room!

Who We Are

Let's be honest... We're a bunch of radio squirrels.  And very lucky radio squirrels at that.  We inhereted the last remaining Morse code coast station in North America.  It was off the air but it was an intact time capsule.

We made the restoration of KPH to operational status our life's work.  That was back in 1999 - the year the last commercial Morse code message in the U.S. was supposedly sent.

Through the trust and vision of the Point Reyes National Seashore we were given permission to begin our project of restoration, documentation and operation.  And we've never looked back.

As True Believers in the importance of our maritime radio heritage we have tried to research and document every aspect of the field.  Our area of specialization is the coast stations, ships and companies of the west coast of the United States. But anything to do with maritime radio anywhere in the world is of interest to us.

Dedicated MRHS volunteers are busy with the preservation, restoration and repair of the historic artifacts with which we have been entrusted.  That work is the foundation on which the real goal of our project rests.  That goal is to assure that the culture, techniques and traditions of the men and women who came before us are not forgotten.  We feel that the best way to achieve that goal is through actual on the air operations.

We look forward to visits by fellow True Believers in the importance of the preservation of our radio heritage.  Please see the Contact Us section for full detail about visiting us.  Or subscribe to our Newsletter using the form above for up to date information.

We invite you to peruse these pages for details of our work and of radio history.  And we wish you fair winds and following seas.

VY 73,


Stay Up To Date!

Subscribe to the MRHS Newsletter for all the latest information.