Tag: M1GEO

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.

This year I joined George M1GEO at our contest site above the Secret Nuclear Bunker in Kelvedon Hatch.

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.

 

 

 

 

 

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.

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.

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

 

RSGB Top Band Club Calls Contest

12th November 2016.

Its not often you hear 1.8 MHz full of phone, but tonight was that night. The RSGB club calls contest is one of the most popular RSGB HF contest around, and at various times of the year covers both CW and SSB from 1.8 to 7 MHz. You can read more about this contest on the HF contest website.

The idea is for clubs to field as many stations as possible, and for the combined scores to contribute to the AFS clubs score. Exchange is a little unusual, the 4 letter club names can be found here.

Contest exchange.

Report, Serial Number, ‘Club HQ’, ‘Club Member’ or ‘No Club’, Club Name (a 4-letter club abbreviation)

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Running as M1GEO and operating as members of the Camb-Hams provided a great volume of QSO over the 3 Hrs contes. The antenna was a top band dipole with the centre at 30m and Icom 7600 running 32w. Most signals received were very strong, although finding space on the band was sometimes difficult. The QSO total was 120, very respectable considering a break for some food at 21.00 Hrs.

Here you can see George M1GEO doing a spot of antenna maintenance before the contest.

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RSGB Christmas cumulative contest

Today I operated alfresco with George M1GEO from our contest site at Kelvedon Hatch SNB. Operating as M0TAZ/P from Kelvedon Hatch SNB in JO01 we managed to operate 3 bands, 144, 70 and 50 MHz.

The contest was a RSGB Christmas Cumulative Contest and we entered as the Secret Nuclear Bunker contest group.

M0TAZ view SNB

Portable Equipment

144 MHz 9e portable tonna Gain: 13.1dBi free space

50 MHz a G0KSC designed 50/70 MHz beam Gain: 8.6dBi free space
70 Mhz a G0KSC designed 50/70 MHz beam Gain: 8.5dBi free space

The 50/70 MHz interlaced beam is interesting as it uses a single feed line, and respectable gain for a 2m boom length.

Racal 12m PU12 mast. Push up 12m mast

Mast head preamp 11 to 18 dB gain.

Power was provided by 110 Ah leisure battery

Radio Icom 7100 at 50w.

Masthead amplifier for 144 MHz provided by George M1GEO. The design was originally published in the RSGB magazine RADCOM plus  issue 1 designed by Ian White GM3SEK. The details are published on his website, detailed as the DG8 low cost, high performance preamp for 144 MHzDG8_144_mast_ampConditions seemed good to the North, allowing us to work some good DX. On 144 MHz our best DX included GM4JR in IO85 (368 km) , MI0SMK in IO64 (524 km) and GD8EXI in IO74 (429 km)

Maps showing the QSO enclosed.

144 MHz

144cc

70 MHz

70cc

50 MHz

50cc

 

Thanks to everyone we worked, from a rather chilly Kelvedon Hatch.

 

m1geo_m0taz

 

SNBCG Christmas Dinner

Members of the newly formed Secret Nuclear Bunker Contest Group met for its inaugural Christmas dinner this weekend. The event was well attended by 10 members, enjoying a traditional Christmas dinner, crackers and unavoidable cracker jokes.

Pre meal drinks, from left to right Chris G8OCV, Dave G7UVW, Bill G0BOF and George M1GEO.

Left Kevin M0TBX and Dave M0YOW enjoying a beer.

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Thanks to Peter G0IAP for organising the event and to everyone that attended. The SNBCG is now affiliated to the RSGB and holds the club call M0SNB and permanent special event call GB0SNB so look out for us in contests in 2016.

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Left (front to back) Bill G0BOF, Chris G8OCV, Dave M0TAZ, Fred G3SVK, Diane

Right (front to back) Dave M0YOL, George M1GEO, Dave G7UVW, Kevin M0TBX, Peter G0IPA

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From left to right Dave G7UVW, Chris G8OCV, Fred G3SVK and Diane

GB0SNB – Kelvedon Hatch Secret Nuclear Bunker.

Spent some time this weekend operating from the Secret Nuclear Bunker at Kelvedon with George M1GEO. The bunker has a permanent special call GB0SNB and we put this on the air both VHF and HF today. It was nice to see 7 MHz in good shape, full with the JOTA and WAG contest.

Here are a few pictures from the day.

More information on the bunker is available at the GB0SNB website.

Here is George M1GEO maintaining the GB7KH repeater.

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Ever wondered what the inside of a DSTAR repeater looks like  (TXM)

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Inside a DSTAR repeater.

And the Icom 7100 with retro microphone

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73 Dave M0TAZ

RSGB 21/28 MHz contest

The RSGB contest provided an ideal opportunity to focus activity on the higher HF bands. Previous John M0UKD and I had built beams for  28 MHz 3e beam and  21 MHz 4e beam using the design on DK7ZB website.  28 MHz is a compact design using a 3m boom, and 21 MHz is somewhat bigger at 5m boom.

The Racal PU12 mast was used for the 28 MHz antenna and Clark 10 for the 21 MHz antenna. Power was provided by the Honda 2KW silent generator and the radio was provided by George M1GEO the Icom 7700 delivering 200w RF.

John M0UKD helping to assemble to 21 MHz (Left) and 28 MHz beams.

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The operating was alfresco as the October weather was  sunny and warm. The shack table was positioned close to the mast ready for armstrong rotation.

The Clark mast was modelling some new blue legs, recently fabricated by Brian 2E0FHU. They worked perfectly and once assembled they provided a sturdy base.21317020033_44fe6db48c_z

A quick check with the MFJ analyser confirmed the antenna was spot on resonance, and so the CQ calling could commence.

Despite a valiant effort on both 21 and 28 MHz conditions did not support the number of QSO we had hopped, in fact you could say it was a challenge to work anyone at times. QSO could be hard to tease out, and we decided the best method was to work anyone we could  hear. Some big DX did arrive, as we managed to work ZS6AI, ZS5DCF, CX8DS, VP8NO and PS8BR to name a few. The bands did seem to be open, at one stage we listened to a CW beacon in South America that was very loud (apparently 10w).

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M1GEO George driving the Icom 7700.

 

 

 

 

 

21 MHz beam (Left) on Clark 10m mast — 28 MHz beam on Racal PU12 mast.

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Despite the lack of activity or poor band conditions we enjoyed our time operating outdoors in the sunshine.

Both homebrew beams worked well, and this may well be the last time we operate outdoors in 2015.

Further pictures from the day are available online.

Thanks to everyone we worked 73 Dave M0TAZ

© 2015 Dave, M0TAZ