Monthly Archives: April 2014

Visit from Cray Valley Radio Society

During one of our field day back in March we worked a member of the Cray Valley Radio Society (CVRS) on 4 metres FM.  Some conversation within the club lead to an email from Chris, G0FDZ, who stepped up to organise a club excursion to the bunker.  Several emails later, we had a date and time for the visit, with numbers to be confirmed.

The 26th April come around quickly, and around 20 members from CVRS arrived at around 10:15.  Peter, G0IAP, was there to greet the gents when they arrived, and fortunately was on hand to take a few pictures too!

Cray Valley members at the Bunker Entrance

Cray Valley members at the Bunker Entrance

Field Weekend

This event was similarly organised to the previous event.  Just a few of us run the event other the weekend, with a few others from the club helping out.  No photos of this event, but some breakdown of the 393 QSOs made.

The map below shows some of the contacts made.  Locations were taken from QRZ,com and so not all worked stations are on the map.

Map of some of the stations worked

Map of some of the stations worked

Below, a breakdown of the bands used and the number of QSOs made.

Band QSOs Percentage
40m 156  39.7
20m 233  59.3
10m 4  1.00
Total 393 100

Crude analysis of contacts made by mode of operation.

Mode QSOs Percentage
SSB 295 75.1
CW 98 24.9
Total 393 100

Field Weekend

At about 5pm, Spencer M0STO and Peter G0IAP converged on the grass outside the main mast at GB0SNB.  In their usual style, George M1GEO and Chris G8OCV were late delayed by around 1 hour by collecting their caravan.  Kevin M0TBX and others arrived some time later since they were coming from work.

George's car was pretty full

George’s car was pretty full

Spencer and Peter had made a good start on the beam construction, while Chris and George were levelling the caravan and setting up the awning as a shack.

Spencer drinking a tea with the antenna parts in the background

Spencer drinking a tea with the antenna parts in the background

By the time the mast had been erected, it was dark, and the generator was running some halogen lamps for the final stages.

Members help guide the Cushcraft ASL 2010 up on the SCAM12

Members help guide the Cushcraft ASL 2010 up on the SCAM12, with Diamond F-23 colinear atop.

Once erected and inflated, the mast was locked in position.  We checked the antennas functioned and went to sleep.  We awoke around 6:30am to try and get some DX into the log.  While operating, we erected the other SCAM mast with a 4 metre antenna.

The field weekend setup near the bunker's original tower site

The field weekend setup near the bunker’s original tower site

After some initial contacts, it became apparent that there was an intermittent connection on the Cushcraft ASL 2010.  Spencer volunteered to adjust the antenna.

Spencer standing on the car roof adjusting the beam

Spencer standing on the car roof adjusting the beam

Strike a pose

Strike a pose

Once the adjustments were made, we went inside to operate.

Members listen in as Steve G8PMU operates 4 metres

Members listen in as Steve G8PMU operates 4 metres

Icom IC7700 comprises the HF station

Icom IC7700 comprises the HF station

Below, Fred G3SVK operates the key on 17 metres, beaming towards Japan.

Fred operates 17 metres CW

Fred operates 17 metres CW

Some preventative maintenance on the generator during the weekend; Here Graham M0PAX and George fill the generator with fuel, while Spencer checks the oil level.

Tending to the generator

Tending to the generator

In total, there were 280 QSOs made that weekend, covering all areas of the globe.  The map below shows some of the contacts made.  Locations were taken from QRZ,com and so not all worked stations are on the map.

Map of some of the stations worked

Map of some of the stations worked

Below, a breakdown of the bands used and the number of QSOs made.

Band QSOs Percentage
60m 7 2.4
20m 173 59.5
17m 83 28.5
15m 2 0.7
4m 9 3.1
2m 17 5.8
Total 291 100

Crude analysis of contacts made by mode of operation.  FM mostly comprised of 4m and 2m activities although there were a couple of HF FM contacts on 10 metres.

Mode QSOs Percentage
SSB 158 54.3
CW 88 30.2
FM 45 15.5
Total 291 100