432MHz UKAC Activity Contest

Every month, the RSGB organises an activity contest. On the second Tuesday it is the 432MHz contest. As I have no suitable antennas, I use either my 2m halo or 2m big wheel antenna and 5W from my FT817ND. Before my voice shouted "stop!" I worked 4 stations as shown on the map.

70cms UKAC

This evening was the Feb 2015 leg of the RSGB's 70cm cumulative contest. My very poor voice was a real handicap as was my QRP SSB (5W pep) and my small 5 el beam fixed in the SW direction.  I was only able to manage about 40 minutes before I had to stop.

70cms UKAC - stations worked with 5W/5el fixed SW

Best DX heard (off the back of the beam) was OZ9KY. Best DX worked was G4CLA at 105km. Before the next session I must mend my beam so I can turn it.

70cm VHF NFD with a simple QRP station

4 ele 70cm yagi on car

Just for a little fun in the sunshine I took my FT817 and "coathanger" 4 el yagi onto a local high spot (actually nothing is high here in East Anglia!) to try just over an hour of operating on 70cm SSB during VHF NFD. Conditions were average, but I heard EI, F, GM and PA and worked 12 stations in just 70 minutes of casual operation with the best DX 262km.  Power output was either 2.5W or 5W.

The 4 el yagi is mounted on a 22mm PVC pipe mast that is simply wedged in the car rear window and manually rotated. The whole set-up can be erected and taken down in about 2 minutes: I don't take contests THAT seriously you see :-)  The map shows the stations worked before going back home for tea.

70cms QSOs in 70 minutes with 5W to a 4el yagi

After tea I parked the car outside my new QTH and erected the 4 el as shown in the photo. Signal strengths from DX stations (PA0 and a station in SW England) were very similar to those on my local /P site, suggesting the new QTH, on a local bump, is promising for VHF/UHF/microwaves.

70cm is a great band and sadly under-used these days on SSB. It is also sad that there are so few 70cms beacons on the air in the UK now. I believe the Bristol 70cms beacon - it was a good conditions indicator here in East Anglia - has recently gone QRT too?

70cm activity contest - a brilliant /P evening

Stations worked 70cms UKAC 14/6/11

My tiny 4el 70cm yagi made from wood and a couple of coat hangers worked very well this evening netting me 17 QSOs in just over 1 hour of operating with 5W RF from the FT817. Best DX worked was 191km although I heard both GD8EXI and GI6ATZ at much greater distances.

432MHz Contest - June 14th

Tuesday June 14th is the 70cms activity contest from 1900-2100z. I've made a small 4 element yagi for portable use and this mounts on a small 20mm diameter pvc conduit pipe fixed in the window of my car (see image). It is all very lightweight. At the intended portable site I was able to copy the GB3BSC beacon some 200km away today in a trial run. All being well I should be able to work a few stations around the country.

70cms lift conditions today

Conditions on 70cms were good this morning: at breakfast time (around 0700z) several more distant repeaters were coming in at good strength here in East Cambridgeshire. Amongst them was the Leicester repeater GB3LE which was fully quieting here and easily accessible with about 2W ERP. I called and said I was listening on 433.5 for simplex QSOs, but there was no-one about. 70cms has frequent localised openings which appear for a few hours then disappear, It is a great pity there is not more simplex FM on 70cms as it is good fun working DX with QRP using this mode with simple colinear antennas or even handhelds.

ZL operation

Although I still take a listen most nights with the VX2 handheld, I have to report that sightseeing is taking a higher priority than QRP operation on 70cms FM in ZL-land at the moment.

The country is SO beautiful, so clean, so uncrowded and the people everywhere are genuinely kind, helpful and interested in you. New Zealand is a lovely place.

Next 70cms FM operation likely to be March 12th when we arrive back in Christchurch on our last night before flying to VK-land to see friends then flying home.

Licence-free handhelds in 70cms

Did YOU realise that we now have to share the 70cm band with LPD433/434 walkie talkies? I understand that Ofcom has recently changed the requirement document (IR2030) and it now allows FM voice transmissions at 1mW/10mW on 69 channels between 433.075 - 434.775MHz. These handhelds are available in the UK from several CB/446 outlets. Look out for the words LPD433 in adverts. 10mW may not sound much but it goes a LONG way from a hilltop. If these units proliferate they could become a real problem for 70ms repeater and simplex users.

70cms good conditions tonight

Just worked GW0LJW in Gwent and G3VEH/M via a 70cms repeater in Somerset tonight when running 5W (actually about 1.5W into the antenna after the coax run) into the vertical colinear. Conditions are definitely up in that direction as the distance is about 250kms.