Students Marine Buoy Actively transmitting on 20m WSPR

By Colin Butler of https://www.icqpodcast.com/

Phil Karn KA9Q, Randy Standke KQ6RS and students at the Mount Carmel High School Amateur Radio Club have constructed and deployed an amateur radio marine buoy, callsign KQ6RS, transmitting 14.0956 MHz USB WSPR. About 700 km off the coast of southern California, the buoy is transmitting WSPR on 20m using the callsign KQ6RS and is being received all over the US and into Canada and Brazil.

The electronics is the 20m WSPR version of the WB8ELK “pico tracker” that has been flown quite a few times (including by us) on long-duration balloons. We removed the solar panels and substituted 21 ordinary alkaline D-cells wired to supply 4.5V. We estimate the battery lifetime will be 6 months.

The basic design was inspired by Bob, WB4APR, at the US Naval Academy. Physically, the buoy is just a 5′ section of 4″ PVC pipe, ballasted at one end to float vertically in the water. The top is closed by a sewer pressure test plug I found at Home Depot; it has a bolt in the centre that acts as a convenient feed-through and mounting point for the antenna, a stainless steel CB whip with a matching network designed, tested and carefully tuned by Randy. We use the sea as a counterpoise, but to avoid direct metal/seawater contact we lined the inside of the pipe with copper tape to form a capacitive connection. We probably spent too much time on this; Randy even modelled the electrical fields in the seawater with a professional RF analysis package.

Checkout the Bouy’s Latest – HERE .

Did Brazilian Priest Precede Fessenden & Marconi With Audio Tx ?

Father Roberto Landell de Moura (January 21, 1861 – June 30, 1928), commonly known as Roberto Landell, was a Brazilian Roman Catholic priest and inventor. He is best known for his work developing long-distance audio transmissions, using a variety of technologies, including an improved megaphone device, photophone (using light beams) and radio signals.

It was reported in June 1899 that he had successfully transmitted audio over a distance of 7 kilometers (4.3 miles),  which was followed by a second, public, demonstration on June 3, 1900. A lack of technical details makes it uncertain which sending technology was being used, however, if radio signals were employed, then these would be the earliest reported audio transmissions by radio. Landell received patents in Brazil and the United States during the first decade of the 1900s.

For more information – HERE .

New Cochno Shack – Latest – July (2020)

July 2019 – Shack Looking SE Over Glasgow

MORE TO FOLLOW:

19/07/20: GM4COX

Photos of progress added to Members Forum.

18/07/20: MM7MCN, MM7POL, MM7AJI, GM4TOQ, GM0EZP, GM4COX

Continue to re-install wrought iron fence.

Continue rebuild/repair of Shack#1 frontage

Paint exterior of Shack#2

12/07/20: 2M0WWC, GM4COX

Paint exterior of Shack#1

01/06/20: GM4COX, GM4TOQ

Burn rhododendron foliage & branches that had been cut the previous year.  

Paint Shack#1 access frontage

19/03/20: GM4COX

MARCH ONWARDS – CORONAVIRUS STOPS PLAY

05/03/20: GM4COX

Shack#1 visit after winter ‘hibernation’. Shack dry. Photos taken and loaded into Cochno folder – MEMBERS FORUM .

17/11/19: GM4TOQ, GM8XGI, MM7AJE

Install new access door to Shack#1.

Drop height of Shack#2 for easier access.

26-27/10/19: GM4TOQ, GM4BGS, GM0EZP, MM1ESW, MM7AJI, MM7AJE………

CQWW SSB – GM4AGG taking part. See POST#160 (Members Forum) .

21/10/19: GM4COX

More update pictures added to Members Forum.

21/09/19: GM4COX

New padlocks fitted. Floor mats fitted. Lefthand door frame repaired. Vent fitted.

13/09/19: GM4COX

Operating Desk secured. Operating chair floor boarding fitted. On-going work on door frames (right & left).

08/09/19: GM4TOQ, GM4BGS, MM7AJI, MM7AJJ

HF Beam relocated from Alan’s QTH to farmyard. Lefthand door protection door padlock cut. On-going work on surrounding fence.

07/09/19: GM4COX

Shack floor tiles cleaned. Operating Desk – equipment shelf modified and both sanded down and painted. Front door (right hand side) frame repaired.

02/08/19: GM4COX

Comprehensive CHECKLIST of outstanding items Posted on Members Forum.

20/07/19: MM1ESW, GM4COX

Stuart – MM1ESW & myself were up at the Shack on Saturday (20th) specifically to carryout some more sealing on #1 and checkout #2. This I did and took the opportunity to take a few pictures and add to the relevant Folders in Photos.

16/07/19: MM0ZUN

“Hi

I was out at the shack this afternoon……………… started sorting out the contents of the old shack. I divided stuff up into components and equipment. The components are now packed up and labeled ready to go to the Electron Club for use by the SoLDER group and others. Just need to get them down from the shack at some point

I have photographed all the equipment (there may be some hiding that I couldn’t get at due to all the cable making things a bit crushed inside) All the smaller stuff is now in 2 crates while the larger stuff remains under the bench and next to the cooker

Kenny”

11/07/19: 2M1CKE, MM0ZUN, GM4TOQ, GM4COX

Floor tiles relayed in #1 and operating desk re-assembled.

#1 Roof some areas sealed. Other areas outstanding.

Tower ground post modified and aligned to swivel point. More modifications required.

A fuller Member’s Post (inc photos) – HERE .

24/06/19 – 05/07/19 : 2M1CKE, MM0ZUN, GM4COX

Painting of the inside of #1 completed (just some small touch-ups required)

Pat has made a start on painting the inside of #1.

( JUNE – OCT: GM4TOQ )

On-going modifications to tower & groundpost. (Pictures added to Members Forum)

22/06/19: GM4TOQ, GM4BGS, GM4COX, MM7MCM

A long but successful day yesterday. New ‘BIG’ tower (and ground-post)  uplifted from south of Inverness and delivered to Cochno. To be located to new Shack. Ground-post to be slightly modified. Hole dug for ground-post, positioned and concreted into place.

Thanks all: Alan – TOQ, Sam – BGS, Jack – COX and Archie – SWL (and of course a big thanks to the tractor driver who uplifted both the tower and ground-post and placed on pick-up. Saved us a lot of time).

A fuller Post to be made in our MEMBERS Forum along with pictures.

16/06/19: 

ABW 22/06/19 a team are heading north to uplift.

19/05/19:

Arrangements underway to uplift tower.

13/05/19:

Pictures added to Members Forum.

11/05/19:

Both Shacks Levelled.

Shack#1, inside and outside washed and cleaned.

Start made on surrounding fence.

And?

Wash outside Shack#2 (Old Shack) in preparation for painting #1 & #2. Paint colour to be decided. (This may depend on what is available – hi?)

Paint interior of #1. (emulsion)

Organise uplift of new tower.

09/05/19:

Members Forum Post updated and pictures added.

08/05/19:

Cleared old Shack#2 for preparation to be re-located on new site. Moved and sited into position. Items that had been removed most are returned for the moment.

Shack#1 emptied in preparation for refurbishment. Most items transferred to Shack#2 for the moment.

Ground around both shacks re-instated after tractor & dumper action. Looking good!

05/05/19:

New tower gifted to the Club. Decision to ‘scrap’ old one but re-use certain items. New tower has to be collected. To be organised.

05/05/19:

Posted by Kenny – MM0ZUN on our MEMBERS FORUM:

“I’ve added some photos from today of getting the shack roughly into its final location.

This wouldn’t have been possible to get done without Gary and some of his friends work.

Kenny”

MAY: GM4TOQ, GM4COX, MM0ZUN, GM4BGS (Peter), MM6WWS

Move Shack#1 (Newest Shack) and Tower for ease of access and refurbishment.

APRIL: GM4TOQ, GM4BGS

Cleared the rhododendrons and cut the dead tree. (see new photos added to PHOTOS/COCHNO_Shack (Club Members only))

Dropped the Tower, removed the HF beam & VHF collinear.

Refurbished the HF beam (The VHF collinear appears to be in good shape)

Access has now been made to the Tower and Shack.

30/04/19 : And the ‘lads’ HAVE:

Well this Project is well underway thanks to the efforts of Alan – GM4TOQ, Alan’s son Garry & Mate, Sam – GM4BGS and Sam’s son Peter.

So where are we at?

Well as you know (or may not – see my thoughts in this POST#25 (Members only)) there is a pile of work to be done.

March 2019 – View From Shack Looking SE Over Glasgow

24/03/19 : GM4TOQ, GM4BGS, GM4COX, MM6BWS

Site visit with follow-on proposals.

 

 

 

 

 

 

 

 

 

 

 

Snips – News For Scotland – 15th March

The news headlines:

  • Voting for the RSGB elections is now open
  • NASA Mars rover has a name
  • Coronavirus affects amateur radio events around the world

GB2RS – News Script – HERE .

CLUBS

The situation with the Covid-19 virus is changing rapidly. You should check before travelling that the activities announced here are taking place. This listing is correct as of 12 noon on Friday the 13th of March.

Unfortunately, due to Covid-19, the CW Boot Camp at GM6NX Stirling due to take place on the 22nd of March and the 23rd annual GMDX Convention due to take place on the 4th of April have been postponed. New dates later in 2020 will be announced as the situation becomes clearer.

Stirling & District Amateur Radio Society club has a meeting from 10am to 2pm today and next Sunday. Thursday sees a club night. For details, email secretary@gm6nx.com

On Monday Edinburgh & District Amateur Radio Club has a net operating evening and Saturday sees a club meeting and social evening. Contact Norman, GM1CNH, on 0774 094 6192.

On Tuesday Kilmarnock & Loudoun Amateur Radio Club has an activity and training night. Contact Len, GM0ONX, via email to klarcinfo@gmail.com

On Tuesday Livingston and District Amateur Radio Society has a training evening. Details from Cathie, 2M0DIB, on 01506 433 846.

On Tuesday Moray Firth Amateur Radio Society has an evening planning the surplus sale. More from Paul, GM8HWZ, on 07967171189.

West of Scotland Amateur Radio Society has its usual Solder Group meeting with a technical evening with licence training. Following on from last Friday’s programme change, this Friday is a Hands-On evening. Details are at wosars.club.

On Thursday Aberdeen Amateur Radio Society is holding the AGM of the Grampian Repeater Group. Contact Fred, GM3ALZ, on 01975 651 365.

On Thursday Lomond Radio Club is having a club night. Detail from Barrie, GM4HEL, by email to gm0kzx@googlemail.com

On Thursday Wigtownshire Amateur Radio Club is having a night on the air. Information from Clive, GM4FZH, by email to info@GM4RIV.org

On Friday Ayr Amateur Radio Group is having a club night. Please check club website for updates or speak to Derek, MM0OVD, on 0744 793 1941.

On Friday Cockenzie & Port Seton Amateur Radio Club is holding a construction night. More information from Bob, GM4UYZ, on 01875 811 723.

On Friday Mid Lanarkshire Amateur Radio Society is having a club night, tuition and radio operations. Detail from https://mlars.co.uk/