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Author Archives: Gavin, M1BXF

The Decca’s Original Purpose

January 23rd, 2014 | Posted by Gavin, M1BXF in General - (0 Comments)

The cottage we are staying in for the 2014 DX’Pedition, The Decca, is so named for its original purpose.

The Decca Navigator System was a hyperbolic radio navigation system which allowed ships and aircraft to determine their position by receiving radio signals from fixed navigational beacons. The system used low frequencies from 70 to 129 kHz. It was first deployed by theRoyal Navy during World War II when the Allied forces needed a system which could be used to achieve accurate landings. After the war it was extensively developed around the UK and later used in many areas around the world.

http://en.wikipedia.org/wiki/Decca_Navigator_System

G4ERO Had Beam, Gee 4 Eee aRr Oh

May 18th, 2013 | Posted by Gavin, M1BXF in General - (0 Comments)

Colin G4ERO built a 15m beam and spent most of his time on 15m working the world, a song had to be made…

Caption Competition #3

May 16th, 2013 | Posted by Gavin, M1BXF in General - (3 Comments)

No prizes, it’s only for a bit of fun. Check the older entries.

Today’s image is: what is going on???

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Post your answers in the comments section.

G4ERO found 12M a little slow

May 15th, 2013 | Posted by Gavin, M1BXF in General - (1 Comments)

Colin G4ERO found it slow on 12m this afternoon and promptly fell asleep while leaving the voice keyer running..

I couldn’t film any longer due to hysterics…

G4 needs a nap

Caption Competition #2

May 15th, 2013 | Posted by Gavin, M1BXF in General - (2 Comments)

Following on from the first Caption Competition we will carry on with a bit of fun with a “caption competition”.  No prizes, it’s only for a bit of fun.

Today’s image is: what is Mark M0MJH doing???

Colin G4ERO

Post your answers in the comments section..

Swapping a beam at GS3PYE/P

May 14th, 2013 | Posted by Gavin, M1BXF in General - (0 Comments)

DX Spots Ranking, GS3PYE/P #1

May 13th, 2013 | Posted by Gavin, M1BXF in General - (0 Comments)

So we have been busy and have seen lots of spots, we didn’t realise we are the most spotted in the world though!

DXSPOTRANKING

(Click to enlarge)

Weather Time Lapse

May 12th, 2013 | Posted by Gavin, M1BXF in General - (0 Comments)

We left a camera taking a photo every 10 seconds from 17:25.38 till 19:34.00 (99 minutes and 762 photos).  We made 1132 QSO in that time, all bands all modes, 11.43 QSOs per minute (1 QSO every 5.25 seconds) average.

Time Lapse to the north

It started rainy and ended a little more sunny, note the seagull in the bottom left about 25 seconds in Smile

4m Meteor Scatter Fun

May 11th, 2013 | Posted by Gavin, M1BXF in General - (0 Comments)

With 4m becoming more available in more European countries all the time we always know coming to the west coast of Scotland where the squares are pretty devoid of resident radio hams would make for fun operating, well with a slow start to the first full day of operating the band started to open.

Here is what the trace for 2 periods was like, this was 5 unique stations calling. Checking the online logbook we worked 11 stations in 35 minutes which was an average of one every 3 minutes or so – this was obviously not MS propagation alone…

Mixed_Station_FSK441_1139_110513

Something we should clarify, there were a few questions from people why we were working a list on 4m, while we don’t run a strict list, when you put so much kit into a van, travel 600km and then setup a good station (a situation many people will not be familiar with), you need a method to control the madness.  A “list” for us is a way to gauge interest and try and give those who need the square, vs those who just want the QSO, priority.  We still welcome random QSOs and at times we need to ignore some callers in priority of others, apologies for that but we will try and work you!

See you on ON4KST.

EME Elevation System Complete

May 6th, 2013 | Posted by Gavin, M1BXF in General - (0 Comments)

So the EME elevation system is now complete.  The control system was able to be simplified due to using the accelerometer as the elevation feedback.  This is an update to the Original EME Elevation Article.

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You can see how the system assembles in the above picture, as the Jackarm extends the upright moves.  The antenna mounts on the pole above the hinge with the antenna running left to right (left is front, right is the back).

The EME elevation system in action, no it’s not fast – but it’s accurate..

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The simple control unit with a mouse for up and down.

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