Category Archives: Non-Bunker

Suffolk RED Field Day

Members of the SNBCG ventured out of Essex into Suffolk on the weekend of the 14-15 July 2018 to take part in a weekend of radio with Suffolk RED. The forecast was set fair with temperatures up to 30C, and with the offer to camp overnight on site.

George M1GEO, Chris G8OCV and Dave M0TAZ setup a VHF and HF station for some radio fun.

The VHF station comprised of a 9e LFA beam, LMR-400 coax and a DG8 masthead preamp. The Icom 7100 provided multimode support on 144 MHz, with the focus for the weekend on FT8. We managed to work  50 stations from 20 Maidenhead locators all over Europe, using a sold state 300w amplifier from Linear Amp UK.

Some highlights from the VHF log included.
DL3GAK at 662KM
F4CYH at 673 KM
OZ1BEF at 693 KM
OZ1BP at 698 KM
You can see a map of the stations worked below.

Power was provided by our 2kW Honda generator.

On Saturday we enjoyed an evening BBQ, and a chance to catch up with other members of the club.

Conditions on HF were not so good. Using an IC7610 and an Expert 1.3k-FA linear operating as M1GEO, only European contacts were made. We operated through the night.The 90 QSOs from the HF operation were loosely broken as follows:

  • SSB: 41 QSOs
  • CW: 35 QSOs
  • FT8: 14 QSOs

The packing down process took some time in the scorching heat. You can see the grass (or lack thereof) was also suffering.

Upminster Windmill GB2UW 2017

We arrived at Upminster Windmill at 9am on Saturday 13th May 2017 to begin setting up. The local council allowed onto the grounds and opened up the visitors centre for us.

Within 10 minutes we had the VHF antenna assembled and up. The HF doublet followed shortly after.

Dave M0TAZ quickly got setup inside the staff room at the visitors centre.

RSGB Christmas Cumulative Contest

The RSGB have a series of Christmas Cumulative contests covering 50/70/144 and 433 MHz. The contest is a chance to put down that turkey sandwich and head out to play some radio in the winter sun. The contest run for 2 hrs, and activity is over 4 days. You can read the rules online, and activity is typically quite high.

31158132393_f3d27d8591_k

This year I joined George M1GEO at our contest site the Secret Nuclear Bunker

31930513506_0256777a97_k

The setup included.

Icom 7100, 9e Portable Tona and RF power was provided by a Linear Amp 300w solid state amplifier. The mast was a Racal PU 12 at 5m as the band was wide open with tropo propagation, this provided some interested DX. Mains power was provided by a silent running 2KW Honda generator.
31158147023_e9722b2ff1_k31819585892_36059ae2b8_k 31930525206_8678001bd8_k
30540861215_64e2d590ad_k

 

 

 

 

 

 

 

 

 

 

We managed to work 51 stations, with our best DX into Spain, EA1FDI in IN53 at 1143 KM.

The QSO map showed some great openings to the South and East.

144_xmas_con2

The temperature dropped quickly once the sun set, providing a spectacular sunset and the motivation to pack away quickly. Altogether a great afternoon playing radio, with some great propagation for a change.

31967463955_ab5e2fb435_k

Thanks to everyone we worked, and all the best in 2017.

LEFARS Bank Holiday Radio Weekend

Everyone loves a bank holiday weekend (unless you happen to be working) and last weekend was a 3 day radio event run by LEFARS. The event is based at the Rainbow and Dove PH, yes really a radio event in a pub garden !

The event used the special event call GB2LRS on 7 and 144 MHz, while 21 MHz used the Secret Bunker Club call M0SNB. On 7 MHz the club used a doublet antenna, on 21 MHz we used 400w and 4e home-brew beam aerial. The beam was mounted on a 10m Clark pump up past, with a recently purchased Yaesu G1000S rotator. The linear amplifier was a solid state by Expert 1.3K providing flawless power on the Honda generator.

27235190492_3c958e5ed8_k

While the band conditions did provide a challenge, we did prove that even on a quiet band its possible to work DX with some power and a good antenna. We worked some nice DX including Uruguay, Brazil and Philippines to name a few.

m0taz

In the evenings we turned our hand to 3.5 MHz, and I made a simple dipole to hang from the mast. We placed a 1:1 Balun at the feed point, and fed the antenna with coax. The antenna was cut to provide a match on 3.7 MHz, so no ATU was required. The addition of 400w allowed us to put out what many described as a phenomenal signal. I checked the signal on the Hack Green SDR, and from this screenshot you can judge for yourself. The signal reported by Hack Green was -42 dBm.

26725036954_45bf8b6e89_k

Fred G3SVK also guest operated, working over 100 station on CW including some USA stations. The total number of QSO over the weekend was 320 mostly on SSB. The conditions at times did throw up a few surprises, at one stage I could hear and worked stations in Ireland at 59 on 21 MHz !

It was also nice to see Charlie M0PZT and Peter G0DZB operating portable both using Elecraft KX3s although both torturing their radios with some old school on-off keying ?

27261870941_0b3b86bbc2_k27261898731_4f6b13dc13_k

27332088595_fbc120d1b9_k

 

 

 

 

 

27332118675_9076b09cd5_k

26725058274_0f5d65d54f_k

26725052774_aec731b368_k

 

 

 

 

 

Thanks to the LEFARS team for organising another great weekend of radio.

Upminster Windmill on the air

National Mills on the air weekend is a chance to combine amateur radio with the national windmills open day. Although not directly related to the bunker, the SNBCG decided to activate Upminster windmill as it is our local mill – it was a delight to operate on the green opposite the mill once again! The mill has stood on the green in various guises since 1803, and recently thanks to the National Lottery Heritage Fund its just secured large grant to complete some restoration and the building of a education and visitors centre.

Unfortunately due to the ongoing building work members of the public were not able to visit the mill this year, but that didn’t stop them coming to visit us operating radio in the field.

26961749712_6ae78fc63b_k

(Back Left Dave M0YOL, From Left John 9H5G, Peter G0IAP, Chris G8OCV and George M1GEO)

This years event was well attending, with our furthest operator travelling from Malta to guest operate. John 9H5G operating (left station) retired to Malta, but often travels back to the UK. We were delighted to welcome him to the team, and he was soon pressed into service on 7 MHz managing the pile-up.

26452370143_3af381d8d8_k

We operated using 2 x Icom 7100, making use of 5, 7, and 14 MHz on HF and 70 and 144 MHz on VHF. Over the course of the weekend we contacted over 30 mills and 150 others stations from all over Europe.

Thanks to everyone we worked, QSL is via eqsl.cc 73